COX JASON M (US)
TYHONAS JOHN (US)
KANIA ROBERT (US)
CHEN YOUNG K (US)
CHAKRAVORTY SUBHAS J (US)
WO2020198058A1 | 2020-10-01 | |||
WO2021081375A1 | 2021-04-29 | |||
WO2014151616A1 | 2014-09-25 |
EP3663293A1 | 2020-06-10 | |||
US5846514A | 1998-12-08 | |||
US6334997B1 | 2002-01-01 | |||
US6334997B1 | 2002-01-01 |
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CLAIMS We claim: 1. A compound, or pharmaceutically acceptable salt or solvate thereof, having the structure of Formula (I): ) wherein, A is N or C; B is N or C; provided if A is N, then B is C; or if A is C, then B is N; X is N or C-R1; Y is N or C-R2; Z is N or C-R3; R1, R2, and R3 are independently selected from H, -CN, halogen, optionally substituted alkyl, optionally substituted cycloalkyl, or optionally substituted cycloalkylalkyl; and W is an optionally substituted nitrogen-containing heterocyclyl, optionally substituted nitrogen-containing heteroaryl, optionally substituted aryl, optionally substituted nitrogen-containing heterocyclyl further substituted with an optionally substituted cycloalkyl, optionally substituted nitrogen-containing heteroaryl further substituted with an optionally substituted cycloalkyl, or optionally substituted aryl further substituted with an optionally substituted cycloalkyl. 2. A compound, or pharmaceutically acceptable salt or solvate thereof, having the structure of Formula (Ia): wherein, X is N or C-R1; Y is N or C-R2; Z is N or C-R3; R1, R2, and R3 are independently selected from H, -CN, halogen, optionally substituted alkyl, optionally substituted cycloalkyl, or optionally substituted cycloalkylalkyl; and W is an optionally substituted nitrogen-containing heterocyclyl, optionally substituted nitrogen-containing heteroaryl, optionally substituted aryl, optionally substituted nitrogen-containing heterocyclyl further substituted with an optionally substituted cycloalkyl, optionally substituted nitrogen-containing heteroaryl further substituted with an optionally substituted cycloalkyl, or optionally substituted aryl further substituted with an optionally substituted cycloalkyl. 3. A compound, or pharmaceutically acceptable salt or solvate thereof, having the structure of Formula (Ib): wherein, X is N or C-R1; Y is N or C-R2; Z is N or C-R3; R1, R2, and R3 are independently selected from H, -CN, halogen, optionally substituted alkyl, optionally substituted cycloalkyl, or optionally substituted cycloalkylalkyl; and W is an optionally substituted nitrogen-containing heterocyclyl, optionally substituted nitrogen-containing heteroaryl, optionally substituted aryl, optionally substituted nitrogen-containing heterocyclyl further substituted with an optionally substituted cycloalkyl, optionally substituted nitrogen-containing heteroaryl further substituted with an optionally substituted cycloalkyl, or optionally substituted aryl further substituted with an optionally substituted cycloalkyl. 4. The compound of claim 1, 2, or 3, or pharmaceutically acceptable salt or solvate thereof, wherein X is C-R1. 5. The compound of claim 1, 2, or 3, or pharmaceutically acceptable salt or solvate thereof, wherein Y is N, and Z is N. 6. The compound of claim 1, 2, or 3, or pharmaceutically acceptable salt or solvate thereof, wherein Y is C-R2, and Z is N. 7. The compound of claim 1, 2, or 3, or pharmaceutically acceptable salt or solvate thereof, wherein Y is N, and Z is C-R3. 8. The compound of claim 1, 2, or 3, or pharmaceutically acceptable salt or solvate thereof, wherein Y is C-R2, and Z is C-R3. 9. The compound of claim 1, 2, or 3, or pharmaceutically acceptable salt or solvate thereof, wherein Y is C-R2. 10. The compound of claim 1, 2, 3 or 9, or pharmaceutically acceptable salt or solvate thereof, wherein X is N, and Z is N. 11. The compound of claim 1, 2, 3 or 9, or pharmaceutically acceptable salt or solvate thereof, wherein X is C-R1, and Z is N. 12. The compound of claim 1, 2, 3 or 9, or pharmaceutically acceptable salt or solvate thereof, wherein X is N, and Z is C-R3. 13. The compound of claim 1, 2, 3 or 9, or pharmaceutically acceptable salt or solvate thereof, wherein X is C-R1, and Z is C-R3. 14. The compound of claim 1, 2, or 3, or pharmaceutically acceptable salt or solvate thereof, wherein Z is C-R3. 15. The compound of claim 1, 2, 3 or 14, or pharmaceutically acceptable salt or solvate thereof, wherein X is N, and Y is N. 16. The compound of claim 1, 2, 3 or 14, or pharmaceutically acceptable salt or solvate thereof, wherein X is C-R1, and Y is N. 17. The compound of claim 1, 2, 3 or 14, or pharmaceutically acceptable salt or solvate thereof, wherein X is N, and Y is C-R2. 18. The compound of claim 1, 2, 3 or 14, or pharmaceutically acceptable salt or solvate thereof, wherein X is C-R1, and Y is C-R2. 19. A compound, or pharmaceutically acceptable salt or solvate thereof, having the structure of Formula (II): wherein, X is N or C-R1; Z is N or C-R3; R1 and R3 are independently selected from H, -CN, halogen, optionally substituted alkyl, optionally substituted cycloalkyl, or optionally substituted cycloalkylalkyl; R4 is selected from optionally substituted alkyl, optionally substituted cycloalkyl, or optionally substituted cycloalkylalkyl; and W is an optionally substituted nitrogen-containing heterocyclyl, optionally substituted nitrogen-containing heteroaryl, optionally substituted aryl, optionally substituted nitrogen-containing heterocyclyl further substituted with an optionally substituted cycloalkyl, optionally substituted nitrogen-containing heteroaryl further substituted with an optionally substituted cycloalkyl, or optionally substituted aryl further substituted with an optionally substituted cycloalkyl. 20. The compound of claim 19, or pharmaceutically acceptable salt or solvate thereof, wherein X is N, and Z is N. 21. The compound of claim 19, or pharmaceutically acceptable salt or solvate thereof, wherein X is C-R1, and Z is N. 22. The compound of claim 19, or pharmaceutically acceptable salt or solvate thereof, wherein X is N, and Z is C-R3. 23. The compound of claim 19, or pharmaceutically acceptable salt or solvate thereof, wherein X is C-R1, and Z is C-R3. 24. The compound of any one of claims 19-23, or pharmaceutically acceptable salt or solvate thereof, wherein R4 is selected from optionally substituted alkyl. 25. The compound of any one of claims 19-23, or pharmaceutically acceptable salt or solvate thereof, wherein R4 is selected from optionally substituted cycloalkyl. 26. The compound of any one of claims 19-23, or pharmaceutically acceptable salt or solvate thereof, wherein R4 is selected from optionally substituted cycloalkylalkyl. 27. The compound of any one of claims 1-26, or pharmaceutically acceptable salt or solvate thereof, wherein R1 is H. 28. The compound of any one of claims 1-26, or pharmaceutically acceptable salt or solvate thereof, wherein R1 is halogen. 29. The compound of any one of claims 1-26, or pharmaceutically acceptable salt or solvate thereof, wherein R1 is fluorine. 30. The compound of any one of claims 1-26, or pharmaceutically acceptable salt or solvate thereof, wherein R1 is optionally substituted alkyl. 31. The compound of any one of claims 1-26, or pharmaceutically acceptable salt or solvate thereof, wherein R1 is optionally substituted cycloalkyl. 32. The compound of any one of claims 1-26, or pharmaceutically acceptable salt or solvate thereof, wherein R1 is optionally substituted cycloalkylalkyl. 33. The compound of any one of claims 1-18, or 27-32, or pharmaceutically acceptable salt or solvate thereof, wherein R2 is H. 34. The compound of any one of claims 1-18, or 27-32, or pharmaceutically acceptable salt or solvate thereof, wherein R2 is halogen. 35. The compound of any one of claims 1-18, or 27-32, or pharmaceutically acceptable salt or solvate thereof, wherein R2 is fluorine. 36. The compound of any one of claims 1-18, or 27-32, or pharmaceutically acceptable salt or solvate thereof, wherein R2 is optionally substituted alkyl. 37. The compound of any one of claims 1-18, or 27-32, or pharmaceutically acceptable salt or solvate thereof, wherein R2 is optionally substituted cycloalkyl. 38. The compound of any one of claims 1-18, or 27-32, or pharmaceutically acceptable salt or solvate thereof, wherein R2 is optionally substituted cycloalkylalkyl. 39. The compound of any one of claims 1-38, or pharmaceutically acceptable salt or solvate thereof, wherein R3 is H. 40. The compound of any one of claims 1-38, or pharmaceutically acceptable salt or solvate thereof, wherein R3 is halogen. 41. The compound of any one of claims 1-38, or pharmaceutically acceptable salt or solvate thereof, wherein R3 is fluorine. 42. The compound of any one of claims 1-38, or pharmaceutically acceptable salt or solvate thereof, wherein R3 is optionally substituted alkyl. 43. The compound of any one of claims 1-38, or pharmaceutically acceptable salt or solvate thereof, wherein R3 is optionally substituted cycloalkyl. 44. The compound of any one of claims 1-38, or pharmaceutically acceptable salt or solvate thereof, wherein R3 is optionally substituted cycloalkylalkyl. 45. The compound of any one of claims 24, 30, 36, or 42, or pharmaceutically acceptable salt or solvate thereof, wherein the optionally substituted alkyl is selected from a C1-C5 optionally substituted alkyl. 46. The compound of any one of claims 25, 31, 37, or 43, or pharmaceutically acceptable salt or solvate thereof, wherein the optionally substituted cycloalkyl is selected from a C3-C4 optionally substituted cycloalkyl. 47. The compound of any one of claims 26, 32, 38, or 44, or pharmaceutically acceptable salt or solvate thereof, wherein the optionally substituted cycloalkylalkyl is selected from a C4-C7 optionally substituted cycloalkylalkyl. 48. The compound of any one of the preceding claims, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted nitrogen-containing heterocyclyl. 49. The compound of claim 48, or pharmaceutically acceptable salt or solvate thereof, wherein W is selected from an optionally substituted pyrrolidine, an optionally substituted 2,5-dihydro-1H- pyrrole, an optionally substituted piperidine, or an optionally substituted 1,2,3,6- tetrahydropyridine. 50. The compound of claim 48, or pharmaceutically acceptable salt or solvate thereof, wherein W is selected from: ; and wherein R5 is selected from -CH3, -CH2CH3, -CH(CH3)2, -C(CH3)3, -CF3, -CH2CF3, - CH(CH3)CF3, -CH2CHF2, or -C(CH3)2CF3. 51. The compound of any one of claims 1-47, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted nitrogen-containing heteroaryl. 52. The compound of claim 51, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted pyridyl, optionally substituted pyrimidyl, optionally substituted triazinyl, or optionally substituted pyrrolyl. 53. The compound of claim 51, or pharmaceutically acceptable salt or solvate thereof, wherein W is selected from: ; and wherein R5 is selected from -CH3, -CH2CH3, -CH(CH3)2, -C(CH3)3, -CF3, -CH2CF3, - CH(CH3)CF3, -CH2CHF2, or -C(CH3)2CF3. 54. The compound of claim 51, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted pyrazyl, optionally substituted imidazyl, optionally substituted triazyl, or optionally substituted tetrazyl. 55. The compound of claim 51, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted pyraz-3-yl, optionally substituted pyraz-4-yl, optionally substituted pyraz-5-yl, optionally substituted imidaz-4-yl, or optionally substituted imidaz-5-yl. 56. The compound of claim 51, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted 1,2,3-triaz-4-yl, optionally substituted 1,2,3-triaz-5-yl, or optionally substituted 1,2,4-oxadiaz-5-yl. 57. The compound of claim 51, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted oxaz-2-yl, optionally substituted oxaz-4-yl, or optionally substituted oxaz-5-yl. 58. The compound of claim 51, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted thiaz-2-yl, optionally substituted thiaz-4-yl, or optionally substituted thiaz-5-yl. 59. The compound of any one of claims 1-47, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted nitrogen-containing heterocyclyl further substituted with an optionally substituted cycloalkyl, or optionally substituted nitrogen-containing heteroaryl further substituted with an optionally substituted cycloalkyl. 60. The compound of claim 59, or pharmaceutically acceptable salt or solvate thereof, wherein W is selected from: ; and R5 is 1-trifluoromethylcyclopropyl, or a cyclopropyl substituted with at least one fluorine. 61. The compound of claim 59, or pharmaceutically acceptable salt or solvate thereof, wherein W is selected from: ; a 5 nd R is 1- trifluoromethylcyclopropyl, or a cyclopropyl substituted with at least one fluorine. 62. The compound of any one of claims 1-47, or pharmaceutically acceptable salt or solvate thereof, wherein W is optionally substituted aryl. 63. The compound of claim 62, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted phenyl. 64. The compound of claim 62, or pharmaceutically acceptable salt or solvate thereof, wherein W is and R5 is selected from -CH3, -CH2CH3, -CH(CH3)2, -C(CH3)3, -CF3, -CH2CF3, - CH(CH3)CF3, -CH2CHF2, or -C(CH3)2CF3. 65. The compound of any one of claims 1-47, or pharmaceutically acceptable salt or solvate thereof, wherein W is optionally substituted aryl further substituted with an optionally substituted cycloalkyl. 66. The compound of claim 65, or pharmaceutically acceptable salt or solvate thereof, wherein W is and R5 is selected from is 1-trifluoromethylcyclopropyl, or a cyclopropyl substituted with at least one fluorine. 67. A compound, or pharmaceutically acceptable salt or solvate thereof, having the structure of Formula (III): wherein, L is -CO-NH-, or -NH-CO-; A is N or C; B is N or C; provided if A is N, then B is C; or if A is C, then B is N; X is N or C-R1; Y is N or C-R2; Z is N or C-R3; R1, R2, and R3 are independently selected from H, -CN, halogen, optionally substituted alkyl, optionally substituted cycloalkyl, or optionally substituted cycloalkylalkyl; or optionally, R1 and R2 may join to form a ring; or optionally R2 and R3 may join to form a ring; R4 is selected from H, halogen, or optionally substituted C1-C3 alkyl; K is N, or C-H; E is N, or C-H; M is N, or C-R5; Q is N, or C-R5; T is N, or C-R5; each R5 is independently selected from H, halogen, or optionally substituted C1- C3 alkyl; G is selected from and W is selected from: optionally substituted nitrogen-containing heterocyclyl; optionally substituted nitrogen-containing heteroaryl; optionally substituted carbocyclyl; optionally substituted aryl; optionally substituted nitrogen-containing heterocyclyl further substituted with an optionally substituted cycloalkyl, or optionally substituted cycloalkylalkyl; optionally substituted nitrogen-containing heteroaryl further substituted with an optionally substituted cycloalkyl, or optionally substituted cycloalkylalkyl; optionally substituted carbocyclyl further substituted with an optionally substituted cycloalkyl, or optionally substituted cycloalkylalkyl; and optionally substituted aryl further substituted with an optionally substituted cycloalkyl, or optionally substituted cycloalkylalkyl. 68. The compound of claim 67, or pharmaceutically acceptable salt or solvate thereof, wherein A is N and B is C. 69. The compound of claim 67, or pharmaceutically acceptable salt or solvate thereof, wherein A is C and B is N. 70. The compound of any one of claims 67-69, or pharmaceutically acceptable salt or solvate thereof, wherein L is -CO-NH-. 71. The compound of any one of claims 67-69, or pharmaceutically acceptable salt or solvate thereof, wherein L is -NH-CO-. 72. The compound of any one of claims 67-71, or pharmaceutically acceptable salt or solvate thereof, wherein G is 73. The compound of any one of claims 67-72, or pharmaceutically acceptable salt or solvate thereof, wherein X is C-R1. 74. The compound of any one of claims 67-72, or pharmaceutically acceptable salt or solvate thereof, wherein Y is N, and Z is N. 75. The compound of any one of claims 67-72, or pharmaceutically acceptable salt or solvate thereof, wherein Y is C-R2, and Z is N. 76. The compound of any one of claims 67-72, or pharmaceutically acceptable salt or solvate thereof, wherein Y is N, and Z is C-R3. 77. The compound of any one of claims 67-72, or pharmaceutically acceptable salt or solvate thereof, wherein Y is C-R2, and Z is C-R3. 78. The compound of any one of claims 67-72, or pharmaceutically acceptable salt or solvate thereof, wherein Y is C-R2. 79. The compound of any one of claims 67-72 or 78, or pharmaceutically acceptable salt or solvate thereof, wherein X is N, and Z is N. 80. The compound of any one of claims 67-72 or 78, or pharmaceutically acceptable salt or solvate thereof, wherein X is C-R1, and Z is N. 81. The compound of any one of claims 67-72 or 78, or pharmaceutically acceptable salt or solvate thereof, wherein X is N, and Z is C-R3. 82. The compound of any one of claims 67-72 or 78, or pharmaceutically acceptable salt or solvate thereof, wherein X is C-R1, and Z is C-R3. 83. The compound of any one of claims 67-72, or pharmaceutically acceptable salt or solvate thereof, wherein Z is C-R3. 84. The compound of any one of claims 67-72, or 83, or pharmaceutically acceptable salt or solvate thereof, wherein X is N, and Y is N. 85. The compound of any one of claims 67-72, or 83, or pharmaceutically acceptable salt or solvate thereof, wherein X is C-R1, and Y is N. 86. The compound of any one of claims 67-72, or 83, or pharmaceutically acceptable salt or solvate thereof, wherein X is N, and Y is C-R2. 87. The compound of any one of claims 67-72, or 83, or pharmaceutically acceptable salt or solvate thereof, wherein X is C-R1, and Y is C-R2. 88. The compound of any one of claims 67-87, or pharmaceutically acceptable salt or solvate thereof, wherein K is N; and E is C-H. 89. The compound of any one of claims 67-87, or pharmaceutically acceptable salt or solvate thereof, wherein K is C-H; and E is N. 90. The compound of any one of claims 67-89, or pharmaceutically acceptable salt or solvate thereof, wherein M is C-R5; Q is C-R5; and T is N. 91. The compound of any one of claims 67-89, or pharmaceutically acceptable salt or solvate thereof, wherein M is C-R5; Q is N; and T is C-R5. 92. The compound of any one of claims 67-89, or pharmaceutically acceptable salt or solvate thereof, wherein M is N; Q is C-R5; and T is C-R5. 93. The compound of any one of claims 67-92, or pharmaceutically acceptable salt or solvate thereof, wherein R1 is H. 94. The compound of any one of claims 67-92, or pharmaceutically acceptable salt or solvate thereof, wherein R1 is halogen. 95. The compound of any one of claims 67-92, or pharmaceutically acceptable salt or solvate thereof, wherein R1 is fluorine. 96. The compound of any one of claims 67-92, or pharmaceutically acceptable salt or solvate thereof, wherein R1 is optionally substituted alkyl. 97. The compound of any one of claims 67-92, or pharmaceutically acceptable salt or solvate thereof, wherein R1 is optionally substituted cycloalkyl. 98. The compound of any one of claims 67-92, or pharmaceutically acceptable salt or solvate thereof, wherein R1 is optionally substituted cycloalkylalkyl. 99. The compound of any one of claims 67-98, or pharmaceutically acceptable salt or solvate thereof, wherein R2 is H. 100. The compound of any one of claims 67-98, or pharmaceutically acceptable salt or solvate thereof, wherein R2 is halogen. 101. The compound of any one of claims 67-98, or pharmaceutically acceptable salt or solvate thereof, wherein R2 is fluorine. 102. The compound of any one of claims 67-98, or pharmaceutically acceptable salt or solvate thereof, wherein R2 is optionally substituted alkyl. 103. The compound of any one of claims 67-98, or pharmaceutically acceptable salt or solvate thereof, wherein R2 is optionally substituted cycloalkyl. 104. The compound of any one of claims 67-98, or pharmaceutically acceptable salt or solvate thereof, wherein R2 is optionally substituted cycloalkylalkyl. 105. The compound of any one of claims 67-104, or pharmaceutically acceptable salt or solvate thereof, wherein R3 is H. 106. The compound of any one of claims 67-104, or pharmaceutically acceptable salt or solvate thereof, wherein R3 is halogen. 107. The compound of any one of claims 67-104, or pharmaceutically acceptable salt or solvate thereof, wherein R3 is fluorine. 108. The compound of any one of claims 67-104, or pharmaceutically acceptable salt or solvate thereof, wherein R3 is optionally substituted alkyl. 109. The compound of any one of claims 67-104, or pharmaceutically acceptable salt or solvate thereof, wherein R3 is optionally substituted cycloalkyl. 110. The compound of any one of claims 67-104, or pharmaceutically acceptable salt or solvate thereof, wherein R3 is optionally substituted cycloalkylalkyl. 111. The compound of any one of claims 96, 102, or 108, or pharmaceutically acceptable salt or solvate thereof, wherein the optionally substituted alkyl is selected from a C1-C5 optionally substituted alkyl. 112. The compound of any one of claims 97, 103, or 109, or pharmaceutically acceptable salt or solvate thereof, wherein the optionally substituted cycloalkyl is selected from a C3-C4 optionally substituted cycloalkyl. 113. The compound of any one of claims 98, 104, or 110, or pharmaceutically acceptable salt or solvate thereof, wherein the optionally substituted cycloalkylalkyl is selected from a C4-C7 optionally substituted cycloalkylalkyl. 114. The compound of any one of claims 67-113, or pharmaceutically acceptable salt or solvate thereof, wherein R4 is F or CH3. 115. The compound of any one of claims 67-91 or 93-114, or pharmaceutically acceptable salt or solvate thereof, wherein M is C-H. 116. The compound of any one of claims 67-90 or 92-114, or pharmaceutically acceptable salt or solvate thereof, wherein Q is C-F. 117. The compound of any one of claims 67-89 or 91-114, or pharmaceutically acceptable salt or solvate thereof, wherein T is C-H. 118. The compound of any one of the preceding claims, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted nitrogen-containing heterocyclyl. 119. The compound of claim 118, or pharmaceutically acceptable salt or solvate thereof, wherein W is selected from an optionally substituted pyrrolidine, an optionally substituted 2,5-dihydro- 1H-pyrrole, an optionally substituted piperidine, or an optionally substituted 1,2,3,6- tetrahydropyridine. 120. The compound of any one of claims 67-117, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted nitrogen-containing heteroaryl. 121. The compound of claim 120, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted pyridyl, optionally substituted pyrimidyl, optionally substituted triazinyl, or optionally substituted pyrrolyl. 122. The compound of claim 120, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted pyrazyl, optionally substituted imidazyl, optionally substituted triazyl, or optionally substituted tetrazyl. 123. The compound of claim 120, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted pyraz-3-yl, optionally substituted pyraz-4-yl, optionally substituted pyraz-5-yl, optionally substituted imidaz-4-yl, or optionally substituted imidaz-5-yl. 124. The compound of claim 120, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted 1,2,3-triaz-4-yl, optionally substituted 1,2,3-triaz-5-yl, or optionally substituted 1,2,4-oxadiaz-5-yl. 125. The compound of claim 120, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted oxaz-2-yl, optionally substituted oxaz-4-yl, or optionally substituted oxaz-5-yl. 126. The compound of claim 120, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted thiaz-2-yl, optionally substituted thiaz-4-yl, or optionally substituted thiaz-5-yl. 127. The compound of any one of claims 67-117, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted nitrogen-containing heterocyclyl further substituted with an optionally substituted cycloalkyl, or optionally substituted cycloalkylalkyl. 128. The compound of any one of claims 67-117, or pharmaceutically acceptable salt or solvate thereof, wherein W is an optionally substituted nitrogen-containing heteroaryl further substituted with an optionally substituted cycloalkyl, or optionally substituted cycloalkylalkyl. 129. The compound of any one of claims 1-47, or pharmaceutically acceptable salt or solvate thereof, wherein W is selected from: . 130. The compound of any one of claims 1-47, or pharmaceutically acceptable salt or solvate thereof, wherein W is selected from: . 131. The compound of any one of claims 1-47, or pharmaceutically acceptable salt or solvate thereof, wherein W is selected from: . 132. The compound of any one of claims 67-117, or pharmaceutically acceptable salt or solvate thereof, wherein W is selected from: . 133. The compound of any one of claims 67-117, or pharmaceutically acceptable salt or solvate thereof, wherein W is selected from: . 134. The compound of any one of claims 67-117, or pharmaceutically acceptable salt or solvate thereof, wherein W is selected from: . 135. A compound, or pharmaceutically acceptable salt or solvate thereof, as provided in Table 1. 136. A pharmaceutical composition comprising a compound, or pharmaceutically acceptable salt or solvate thereof, as described in any one of claims 1 – 135, and a pharmaceutically acceptable excipient. 137. A method of preparing a pharmaceutical composition comprising mixing a compound, or pharmaceutically acceptable salt or solvate thereof, of any one of claims 1 - 135, and a pharmaceutically acceptable carrier. 138. A compound of any one of claims 1 - 135, or pharmaceutically acceptable salt or solvate thereof, for use in a method of treatment of the human or animal body. 139. A compound of any one of claims 1 - 135, or pharmaceutically acceptable salt or solvate thereof, for use in a method of treatment of cancer or neoplastic disease. 140. Use of a compound of any one of claims 1 - 135, or pharmaceutically acceptable salt or solvate thereof, in the manufacture of a medicament for the treatment of cancer or neoplastic disease. 141. A method of treating cancer in a patient in need thereof, comprising administering to the patient a compound as described in any one of claims 1 - 135, or pharmaceutically acceptable salt or solvate thereof. 142. A method of treating cancer in a patient in need thereof, comprising administering to the patient a pharmaceutical composition comprising a compound as described in any one of claims 1 - 135, or pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable excipient. |
1-(Tert-butyl)-N-(2-fluoro-4-methyl-5-(8- 231 morpholinoimidazo[1,2-a]pyrazin-6-yl)phenyl)- 1H-imidazole-4-carboxamide
Synthetic Chemistry Co Example 293 294 295 N-(2-Tert-butyl-1,3-oxazol-5-yl)-5-methyl-4- [2-methyl-8-(morpholin-4-yl)- 296 [1,2,4]triazolo[1,5-a]pyridin-6-yl]pyridine-2- carboxamide
Preparation of Compounds [00210] The compounds used in the reactions described herein are made according to organic synthesis techniques known to those skilled in this art, starting from commercially available chemicals and/or from compounds described in the chemical literature. "Commercially available chemicals" are obtained from standard commercial sources including Acros Organics (Pittsburgh, PA), Aldrich Chemical (Milwaukee, WI, including Sigma Chemical and Fluka), Apin Chemicals Ltd. (Milton Park, UK), Avocado Research (Lancashire, U.K.), BDH Inc. (Toronto, Canada), Bionet (Cornwall, U.K.), Chemservice Inc. (West Chester, PA), Crescent Chemical Co. (Hauppauge, NY), Eastman Organic Chemicals, Eastman Kodak Company (Rochester, NY), Fisher Scientific Co. (Pittsburgh, PA), Fisons Chemicals (Leicestershire, UK), Frontier Scientific (Logan, UT), ICN Biomedicals, Inc. (Costa Mesa, CA), Key Organics (Cornwall, U.K.), Lancaster Synthesis (Windham, NH), Maybridge Chemical Co. Ltd. (Cornwall, U.K.), Parish Chemical Co. (Orem, UT), Pfaltz & Bauer, Inc. (Waterbury, CN), Polyorganix (Houston, TX), Pierce Chemical Co. (Rockford, IL), Riedel de Haen AG (Hanover, Germany), Spectrum Quality Product, Inc. (New Brunswick, NJ), TCI America (Portland, OR), Trans World Chemicals, Inc. (Rockville, MD), and Wako Chemicals USA, Inc. (Richmond, VA). [00211] Suitable reference books and treatise that detail the synthesis of reactants useful in the preparation of compounds described herein, or provide references to articles that describe the preparation, include for example, "Synthetic Organic Chemistry", John Wiley & Sons, Inc., New York; S. R. Sandler et al., "Organic Functional Group Preparations," 2nd Ed., Academic Press, New York, 1983; H. O. House, "Modern Synthetic Reactions", 2nd Ed., W. A. Benjamin, Inc. Menlo Park, Calif.1972; T. L. Gilchrist, "Heterocyclic Chemistry", 2nd Ed., John Wiley & Sons, New York, 1992; J. March, "Advanced Organic Chemistry: Reactions, Mechanisms and Structure", 4th Ed., Wiley-Interscience, New York, 1992. Additional suitable reference books and treatise that detail the synthesis of reactants useful in the preparation of compounds described herein, or provide references to articles that describe the preparation, include for example, Fuhrhop, J. and Penzlin G. "Organic Synthesis: Concepts, Methods, Starting Materials", Second, Revised and Enlarged Edition (1994) John Wiley & Sons ISBN: 3-527- 29074-5; Hoffman, R.V. "Organic Chemistry, An Intermediate Text" (1996) Oxford University Press, ISBN 0-19-509618-5; Larock, R. C. "Comprehensive Organic Transformations: A Guide to Functional Group Preparations" 2nd Edition (1999) Wiley-VCH, ISBN: 0-471-19031-4; March, J. "Advanced Organic Chemistry: Reactions, Mechanisms, and Structure" 4th Edition (1992) John Wiley & Sons, ISBN: 0-471-60180-2; Otera, J. (editor) "Modern Carbonyl Chemistry" (2000) Wiley-VCH, ISBN: 3-527-29871-1; Patai, S. "Patai's 1992 Guide to the Chemistry of Functional Groups" (1992) Interscience ISBN: 0-471-93022-9; Solomons, T. W. G. "Organic Chemistry" 7th Edition (2000) John Wiley & Sons, ISBN: 0-471-19095-0; Stowell, J.C., "Intermediate Organic Chemistry" 2nd Edition (1993) Wiley-Interscience, ISBN: 0-471- 57456-2; "Industrial Organic Chemicals: Starting Materials and Intermediates: An Ullmann's Encyclopedia" (1999) John Wiley & Sons, ISBN: 3-527-29645-X, in 8 volumes; "Organic Reactions" (1942-2000) John Wiley & Sons, in over 55 volumes; and "Chemistry of Functional Groups" John Wiley & Sons, in 73 volumes. [00212] Specific and analogous reactants are optionally identified through the indices of known chemicals prepared by the Chemical Abstract Service of the American Chemical Society, which are available in most public and university libraries, as well as through on-line databases (contact the American Chemical Society, Washington, D.C. for more details). Chemicals that are known but not commercially available in catalogs are optionally prepared by custom chemical synthesis houses, where many of the standard chemical supply houses (e.g., those listed above) provide custom synthesis services. A reference useful for the preparation and selection of pharmaceutical salts of the compounds described herein is P. H. Stahl & C. G. Wermuth "Handbook of Pharmaceutical Salts", Verlag Helvetica Chimica Acta, Zurich, 2002. Pharmaceutical Compositions [00213] In certain embodiments, the RAF kinase inhibitory compound described herein is administered as a pure chemical. In other embodiments, the RAF kinase inhibitory compound described herein is combined with a pharmaceutically suitable or acceptable carrier (also referred to herein as a pharmaceutically suitable (or acceptable) excipient, physiologically suitable (or acceptable) excipient, or physiologically suitable (or acceptable) carrier) selected on the basis of a chosen route of administration and standard pharmaceutical practice as described, for example, in Remington: The Science and Practice of Pharmacy (Gennaro, 21 st Ed. Mack Pub. Co., Easton, PA (2005)). [00214] Provided herein is a pharmaceutical composition comprising at least one RAF kinase inhibitory compound as described herein, or a stereoisomer, pharmaceutically acceptable salt, hydrate, or solvate thereof, together with one or more pharmaceutically acceptable carriers. The carrier(s) (or excipient(s)) is acceptable or suitable if the carrier is compatible with the other ingredients of the composition and not deleterious to the recipient (i.e., the subject or the patient) of the composition. [00215] One embodiment provides a pharmaceutical composition comprising a pharmaceutically acceptable excipient and a compound of Formula (I), or a pharmaceutically acceptable salt or solvate thereof. [00216] One embodiment provides a pharmaceutical composition comprising a pharmaceutically acceptable excipient and a compound of Formula (Ia), or a pharmaceutically acceptable salt or solvate thereof. [00217] One embodiment provides a pharmaceutical composition comprising a pharmaceutically acceptable excipient and a compound of Formula (Ib), or a pharmaceutically acceptable salt or solvate thereof. [00218] One embodiment provides a pharmaceutical composition comprising a pharmaceutically acceptable excipient and a compound of Formula (II), or a pharmaceutically acceptable salt or solvate thereof. [00219] One embodiment provides a pharmaceutical composition comprising a pharmaceutically acceptable excipient and a compound of Formula (III), or a pharmaceutically acceptable salt or solvate thereof. [00220] One embodiment provides a method of preparing a pharmaceutical composition comprising mixing a compound of Formula (I), (Ia), (Ib), (II), or (III), or a pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable carrier. [00221] In certain embodiments, the RAF kinase inhibitory compound as described by Formula (I), (Ia), (Ib), (II), or (III), or a pharmaceutically acceptable salt or solvate thereof, is substantially pure, in that it contains less than about 5%, or less than about 1%, or less than about 0.1%, of other organic small molecules, such as unreacted intermediates or synthesis by-products that are created, for example, in one or more of the steps of a synthesis method. [00222] Suitable oral dosage forms include, for example, tablets, pills, sachets, or capsules of hard or soft gelatin, methylcellulose or of another suitable material easily dissolved in the digestive tract. In some embodiments, suitable nontoxic solid carriers are used which include, for example, pharmaceutical grades of mannitol, lactose, starch, magnesium stearate, sodium saccharin, talcum, cellulose, glucose, sucrose, magnesium carbonate, and the like. (See, e.g., Remington: The Science and Practice of Pharmacy (Gennaro, 21 st Ed. Mack Pub. Co., Easton, PA (2005)). [00223] In some embodiments, the RAF kinase inhibitory compound as described by Formula (I), (Ia), (Ib), (II), or (III), or pharmaceutically acceptable salt or solvate thereof, is formulated for administration by injection. In some instances, the injection formulation is an aqueous formulation. In some instances, the injection formulation is a non-aqueous formulation. In some instances, the injection formulation is an oil-based formulation, such as sesame oil, or the like. [00224] The dose of the composition comprising at least one RAF kinase inhibitory compound as described herein differs depending upon the subject or patient's (e.g., human) condition. In some embodiments, such factors include general health status, age, and other factors. [00225] Pharmaceutical compositions are administered in a manner appropriate to the disease to be treated (or prevented). An appropriate dose and a suitable duration and frequency of administration will be determined by such factors as the condition of the patient, the type and severity of the patient's disease, the particular form of the active ingredient, and the method of administration. In general, an appropriate dose and treatment regimen provides the composition(s) in an amount sufficient to provide therapeutic and/or prophylactic benefit, e.g., an improved clinical outcome, such as more frequent complete or partial remissions, or longer disease-free and/or overall survival, or a lessening of symptom severity. Optimal doses are generally determined using experimental models and/or clinical trials. The optimal dose depends upon the body mass, weight, or blood volume of the patient. [00226] Oral doses typically range from about 1.0 mg to about 1000 mg, one to four times, or more, per day. Methods of Treatment [00227] One embodiment provides a compound of Formula (I), or a pharmaceutically acceptable salt or solvate thereof, for use in a method of treatment of the human or animal body. [00228] One embodiment provides a compound of Formula (I), or a pharmaceutically acceptable salt or solvate thereof, for use in a method of treatment of cancer or neoplastic disease. [00229] One embodiment provides a pharmaceutical composition comprising a compound of Formula (I), or a pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable excipient for use in a method of treatment of cancer or neoplastic disease. [00230] One embodiment provides a use of a compound of Formula (I), or a pharmaceutically acceptable salt or solvate thereof, in the manufacture of a medicament for the treatment of cancer or neoplastic disease. [00231] In some embodiments is provided a method of treating cancer, in a patient in need thereof, comprising administering to the patient a compound of Formula (I), or a pharmaceutically acceptable salt or solvate thereof. In some embodiments is provided a method of treating cancer, in a patient in need thereof, comprising administering to the patient a pharmaceutical composition comprising a compound of Formula (I), or a pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable excipient. [00232] One embodiment provides a compound of Formula (Ia), or a pharmaceutically acceptable salt or solvate thereof, for use in a method of treatment of the human or animal body. [00233] One embodiment provides a compound of Formula (Ia), or a pharmaceutically acceptable salt or solvate thereof, for use in a method of treatment of cancer or neoplastic disease. [00234] One embodiment provides a pharmaceutical composition comprising a compound of Formula (Ia), or a pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable excipient for use in a method of treatment of cancer or neoplastic disease. [00235] One embodiment provides a use of a compound of Formula (Ia), or a pharmaceutically acceptable salt or solvate thereof, in the manufacture of a medicament for the treatment of cancer or neoplastic disease. [00236] In some embodiments is provided a method of treating cancer, in a patient in need thereof, comprising administering to the patient a compound of Formula (Ia), or a pharmaceutically acceptable salt or solvate thereof. In some embodiments is provided a method of treating cancer, in a patient in need thereof, comprising administering to the patient a pharmaceutical composition comprising a compound of Formula (Ia), or a pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable excipient. [00237] One embodiment provides a compound of Formula (Ib), or a pharmaceutically acceptable salt or solvate thereof, for use in a method of treatment of the human or animal body. [00238] One embodiment provides a compound of Formula (Ib), or a pharmaceutically acceptable salt or solvate thereof, for use in a method of treatment of cancer or neoplastic disease. [00239] One embodiment provides a pharmaceutical composition comprising a compound of Formula (Ib), or a pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable excipient for use in a method of treatment of cancer or neoplastic disease. [00240] One embodiment provides a use of a compound of Formula (Ib), or a pharmaceutically acceptable salt or solvate thereof, in the manufacture of a medicament for the treatment of cancer or neoplastic disease. [00241] In some embodiments is provided a method of treating cancer, in a patient in need thereof, comprising administering to the patient a compound of Formula (Ib), or a pharmaceutically acceptable salt or solvate thereof. In some embodiments is provided a method of treating cancer, in a patient in need thereof, comprising administering to the patient a pharmaceutical composition comprising a compound of Formula (Ib), or a pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable excipient. [00242] One embodiment provides a compound of Formula (II), or a pharmaceutically acceptable salt or solvate thereof, for use in a method of treatment of the human or animal body. [00243] One embodiment provides a compound of Formula (II), or a pharmaceutically acceptable salt or solvate thereof, for use in a method of treatment of cancer or neoplastic disease. [00244] One embodiment provides a pharmaceutical composition comprising a compound of Formula (II), or a pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable excipient for use in a method of treatment of cancer or neoplastic disease. [00245] One embodiment provides a use of a compound of Formula (II), or a pharmaceutically acceptable salt or solvate thereof, in the manufacture of a medicament for the treatment of cancer or neoplastic disease. [00246] In some embodiments is provided a method of treating cancer, in a patient in need thereof, comprising administering to the patient a compound of Formula (II), or a pharmaceutically acceptable salt or solvate thereof. In some embodiments is provided a method of treating cancer, in a patient in need thereof, comprising administering to the patient a pharmaceutical composition comprising a compound of Formula (II), or a pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable excipient. [00247] One embodiment provides a compound of Formula (III), or a pharmaceutically acceptable salt or solvate thereof, for use in a method of treatment of the human or animal body. [00248] One embodiment provides a compound of Formula (III), or a pharmaceutically acceptable salt or solvate thereof, for use in a method of treatment of cancer or neoplastic disease. [00249] One embodiment provides a pharmaceutical composition comprising a compound of Formula (III), or a pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable excipient for use in a method of treatment of cancer or neoplastic disease. [00250] One embodiment provides a use of a compound of Formula (III), or a pharmaceutically acceptable salt or solvate thereof, in the manufacture of a medicament for the treatment of cancer or neoplastic disease. [00251] In some embodiments is provided a method of treating cancer, in a patient in need thereof, comprising administering to the patient a compound of Formula (III), or a pharmaceutically acceptable salt or solvate thereof. In some embodiments is provided a method of treating cancer, in a patient in need thereof, comprising administering to the patient a pharmaceutical composition comprising a compound of Formula (III), or a pharmaceutically acceptable salt or solvate thereof, and a pharmaceutically acceptable excipient. [00252] In some embodiments described herein, the compound of Formula (I), (Ia), (Ib), (II), or (III) partitions across the blood-brain barrier (BBB) with a Kp,uu of greater than 1. In some embodiments described herein, the compound of Formula (I), (Ia), (Ib), (II), or (III) exhibits a Kp,uu greater than 0.3. In some embodiments described herein, the compound of Formula (I), (Ia), (Ib), (II), or (III) exhibits a Kp,uu greater than 0.4. In some embodiments described herein, the compound of Formula (I), (Ia), (Ib), (II), or (III) exhibits a Kp,uu greater than 0.6. In some embodiments described herein, the compound of Formula (I), (Ia), (Ib), (II), or (III) exhibits a Kp,uu greater than 0.8. In some embodiments described herein, the compound of Formula (I), (Ia), (Ib), (II), or (III) exhibits a Kp,uu greater than 1.0. In some embodiments described herein, the compound of Formula (I), (Ia), (Ib), (II), or (III) exhibits a Kp,uu greater than 1.2. In some embodiments described herein, the compound of Formula (I), (Ia), (Ib), (II), or (III) exhibits a Kp,uu greater than 1.4. In some embodiments described herein, the compound of Formula (I), (Ia), (Ib), (II), or (III) exhibits a Kp,uu greater than 1.6. In some embodiments described herein, the compound of Formula (I), (Ia), (Ib), (II), or (III) exhibits a Kp,uu greater than 1.8. In some embodiments described herein, the compound of Formula (I), (Ia), (Ib), (II), or (III) exhibits a Kp,uu greater than 2.0. In some embodiments, the Kp,uu value is determined in a rat. In some embodiments, the Kp,uu value is determined in a mouse. In some embodiments, the Kp,uu value is determined in a rodent. In some embodiments, the Kp,uu value is determined in a dog. In some embodiments, the Kp,uu value is determined in a primate. In some embodiments, the Kp,uu value is determined in a human. [00253] Provided herein is the method wherein the pharmaceutical composition is administered orally. Provided herein is the method wherein the pharmaceutical composition is administered by injection. [00254] Other embodiments and uses will be apparent to one skilled in the art in light of the present disclosures. The following examples are provided merely as illustrative of various embodiments and shall not be construed to limit the invention in any way. EXAMPLES I. Chemical Synthesis [00255] In some embodiments, the RAF kinase inhibitory compounds disclosed herein are synthesized according to the following examples. As used below, and throughout the description of the invention, the following abbreviations, unless otherwise indicated, shall be understood to have the following meanings: °C degrees Celsius δH chemical shift in parts per million downfield from tetramethylsilane DCM dichloromethane (CH 2 Cl 2 ) DMF dimethylformamide DMSO dimethylsulfoxide EA ethyl acetate ESI electrospray ionization Et ethyl g gram(s) h hour(s) HPLC high performance liquid chromatography Hz hertz J coupling constant (in NMR spectrometry) LCMS liquid chromatography mass spectrometry μ micro m multiplet (spectral); meter(s); milli M molar M + parent molecular ion Me methyl MHz megahertz min minute(s) mol mole(s); molecular (as in mol wt) mL milliliter MS mass spectrometry nm nanometer(s) NMR nuclear magnetic resonance pH potential of hydrogen; a measure of the acidity or basicity of an aqueous solution PE petroleum ether RT room temperature s singlet (spectral) t triplet (spectral) T temperature TFA trifluoroacetic acid THF tetrahydrofuran [00256] Intermediate 1: (S)-N-(2-Fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxab orolan-2- yl)phenyl)-3-(2,2,2- trifluoroethyl)pyrrolidine-1-carboxamide [00257] Step 1.2-Fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborola n-2-yl)aniline [00258] To a stirred mixture of 5-bromo-2-fluoro-4-methylaniline (10 g, 49.01 mmol), 4,4,5,5- tetramethyl-2-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3,2-di oxaborolane (14.93 g, 58.81 mmol) and Pd(dppf)Cl 2 CH 2 Cl 2 (2.00 g, 2.45 mmol) in 1,4-dioxane (120 mL) was added KOAc (14.43 g, 147.03 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 100 °C. The resulting mixture was diluted with water (300 mL) at room temperature. The resulting mixture was extracted with CH 2 Cl 2 (3 x 200 mL). The combined organic layers was washed with brine (3 x 200 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (4/1). The fractions contained desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)aniline (11.6 g, 94%) as a green solid. MS ESI calculated for C13H19BFNO2 [M + H] + , 252.15, found 252.10; 1 H NMR (400 MHz, Chloroform-d) δ 7.24 (d, J = 10.0 Hz, 1H), 6.82 (d, J = 12.0 Hz, 1H), 3.60 (s, 2H), 2.45 (s, 3H), 1.35 (s, 12H); 19 F NMR (376 MHz, Chloroform-d) δ -131.47 (1F) [00259] Step 2. (S)-N-(2-Fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxab orolan-2-yl)phenyl)-3- (2,2,2-trifluoroethyl)pyrrolidine-1-carboxamide [00260] To a stirred solution of 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2-yl)aniline (0.50 g, 1.99 mmol) and DIEA (1.28 g, 9.96 mmol) in THF (42 mL) was added Triphosgene (236 mg, 0.796 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 0.5 h at room temperature under nitrogen atmosphere. To the above mixture was added the solution of (3S)-3-(2,2,2-trifluoroethyl)pyrrolidine hydrochloride (0.38 g, 1.99 mmol) in THF (5 mL). The reaction mixture was stirred for additional 2 h at room temperature. The resulting mixture was quenched by the addition of methanol (50 mL) at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with petroleum ether/ethyl acetatel (2/1). The fractions contained desired product were combined and concentrated to afford (S)-N-(2-fluoro-4-methyl- 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-3-(2, 2,2-trifluoroethyl)pyrrolidine-1- carboxamide (0.70 g, 82%) as an off-white solid. MS ESI calculated for C 20 H 27 BF 4 N 2 O 3 [M + H] + , 431.21, found 431.30; 1 H NMR (400 MHz, Chloroform-d) δ 8.39 (d, J = 9.2 Hz, 1H), 6.88 (d, J = 12.8 Hz, 1H), 6.19 (s, 1H), 3.86-3.82 (m, 1H), 3.68-3.63 (m, 1H), 3.50-3.44 (m, 1H), 3.17-3.12 (m, 1H), 2.62-2.54 (m, 1H), 2.49 (s, 3H), 2.33-2.23 (m, 3H), 1.82-1.72 (m, 1H), 1.34 (s, 12H). 19 F NMR (376 MHz, Chloroform-d) δ -64.97 (3F), -128.85 (1F) [00261] Intermediate 2: N-(2-Fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborol an-2-yl)phenyl)-3- (2,2,2-trifluoroethyl)-2,5-dihydro-1H-pyrrole-1-carboxamide [00262] Step 1. Tert-butyl 3-(2,2,2-trifluoroethyl)-2,5-dihydropyrrole-1-carboxylate [00263] To a stirred mixture of cesium carbonate (19.87 g, 60.98 mmol), Tris(dibenzylideneacetone)dipalladium(0)-chloroform adduct (1.58 g, 1.52 mmol) and XantPhos (3.00 g, 5.18 mmol) in dioxane (30 mL) were added tert-butyl 3-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)-2,5-dihydropyrrole-1-carboxylate (4.5 g, 15.24 mmol) and 1,1,1-trifluoro-2- iodoethane (12.80 g, 60.98 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 100 °C. The resulting mixture was filtered, the filter cake was washed with dichloromethane (3 x 200 mL). The filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with petroleum ether/ethyl acetatel (5/1). The fractions contained desired product were combined and concentrated to afford tert-butyl 3-(2,2,2-trifluoroethyl)-2,5-dihydropyrrole-1-carboxylate (0.30 g, 8%) as a light brown oil. MS ESI calculated for C 11 H 16 F 3 NO 2 [M - C 4 H 8 + H] + , 196.05, found 195.90; 1 H NMR (400 MHz, Chloroform-d) δ 5.77 (d, J = 20.0 Hz, 1H), 4.17-4.12 (m, 4H), 3.00-2.91 (m, 2H), 1.50 (s, 9H); 19 F NMR (376 MHz, Chloroform-d) δ -64.94 (3F) [00264] Step 2.3-(2,2,2-Trifluoroethyl)-2,5-dihydro-1H-pyrrole hydrochloride [00265] To a stirred solution of tert-butyl 3-(2,2,2-trifluoroethyl)-2,5-dihydropyrrole-1-carboxylate (0.30 g, 1.19 mmol) in dichloromethane (3 mL) was added HCl (gas) in 1,4-dioxane (3 mL, 4 M) dropwise at 0 °C. The resulting mixture was stirred for 2 h at room temperature. The resulting mixture was concentrated under reduced pressure to afford 3-(2,2,2-trifluoroethyl)-2,5-dihydro- 1H-pyrrole hydrochloride (0.20 g, crude) as a brown oil. MS ESI calculated for C 6 H 9 ClF 3 N [M - HCl + H] + , 152.06, 154.06, found 152.00, 154.00; 1 H NMR (400 MHz, DMSO-d6) δ 9.60 (s, 2H), 5.84 (d, J = 62.0 Hz, 1H), 3.98-3.91 (m, 4H), 3.41-3.32 (m, 2H); 19 F NMR (376 MHz, DMSO-d 6 ) δ -63.32 (3F). [00266] Step 3. N-[2-Fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborol an-2-yl)phenyl]-3-(2,2,2- trifluoroethyl)-2,5-dihydropyrrole-1-carboxamide [00267] To a stirred solution of 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2-yl)aniline (0.10 g, 0.40 mmol) and N,N-diisopropylethylamine (0.26 g, 1.99 mmol) in tetrahydrofuran (5.00 mL) was added triphosgene (47.01 mg, 0.16 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 0.5 h at room temperature under nitrogen atmosphere. To the above mixture was added 3-(2,2,2-trifluoroethyl)-2,5-dihydro-1H-pyrrole hydrochloride (67.00 mg, 0.36 mmol) at 0 °C. The reaction mixture was stirred for additional 2 h at room temperature. The resulting mixture was quenched by the addition of methanol (20 mL) at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with petroleum ether/ethyl acetate (1/1). The fractions contained desired product were combined and concentrated to afford N-[2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborol an-2-yl)phenyl]-3-(2,2,2- trifluoroethyl)-2,5-dihydropyrrole-1-carboxamide (0.10 g, 59%) as an off-white solid. MS ESI calculated for C 20 H 25 BF 4 N 2 O 3 [M + H] + , 429.19, found 429.20; 1 H NMR (400 MHz, Chloroform-d) δ 8.41 (d, J = 9.6 Hz, 1H), 6.89 (d, J = 12.4 Hz, 1H), 6.19 (d, J = 2.8 Hz, 1H), 5.88 (s, 1H), 4.34-4.32 (m, 4H), 3.07-2.99 (m, 2H), 2.50 (s, 3H), 1.34 (s, 12H). 19 F NMR (376 MHz, Chloroform-d) δ -64.84 (3F), -128.78 (1F). [00268] Intermediate 3: 5-Chloro-7-(morpholin-4-yl)-2H-indazole [00269] To a stirred solution of 7-bromo-5-chloro-2H-indazole (6 g, 25.92 mmol) and 1-chloro-1- [dicyclohexyl([2-[2,4,6-tris(propan-2-yl)phenyl]phenyl])-l^[ 5]-phosphanyl]-2H,3H,4H- benzo[c]1-aza-2-palladacyclohexane (0.77 g, 1.04 mmol) in morpholine (2.26 g, 25.92 mmol) was added Lithium bis(trimethylsily)amide (LiHMDS, 1 M solution in tetrahydrofuran) (90.7 mL, 90.72 mmol) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 3 h at 65 °C under nitrogen atmosphere. The resulting mixture was quenched with saturated aqueous NH4Cl (200 mL). The resulting mixture was extracted with ethyl acetate (3 x 200 mL). The combined organic layers was washed with brine (100 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with petroleum ether/ethyl acetate (1/1). The fractions contained desired product were combined and concentrated to afford 5-chloro-7- (morpholin-4-yl)-2H-indazole (4.1 g, 67%) as a light grey solid. MS ESI calculated for C11H12ClN3O [M + H] + , 238.07, 240.07, found 237.90, 239.90. 1 H NMR (400 MHz, Chloroform-d) δ 8.79 (s, 1H), 8.04 (s, 1H), 7.44 (d, J = 1.6 Hz, 1H), 6.85 (d, J = 1.6 Hz, 1H), 3.98-3.95 (m, 4H), 3.21-3.19 (m, 4H) [00270] The following compounds in Table 2 were prepared using procedures similar to those described in Intermediate 3 using appropriate starting materials. Table 2 [00271] Intermediate 5: 4-(5-Chloro-2-methyl-2H-indazol-7-yl)morpholine [00272] To a stirred solution of 5-chloro-7-(morpholin-4-yl)-1H-indazole (1.00 g, 4.21 mmol) in EA (14 mL) was added trimethyloxonium tetrafluoroborate (0.80 g, 5.43 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched by the addition of sat. NaHCO3 (aq.) (40 mL) at 0 °C. The resulting mixture was extracted with EtOAc (3 x 60 mL). The combined organic layers was washed with brine (1 x 40 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with (PE/EtOAc/EtOH = 4/3/1). The fractions contained desired product were combined and concentrated to afford 5-chloro-2-methyl-7- (morpholin-4-yl)indazole (0.84 g, 79%) as an off-white solid. MS ESI calculated for C12H14ClN3O [M + H] + , 252.08, 254.08, found 252.10, 254.10; 1 H NMR (400 MHz, Chloroform-d) δ 7.80 (s, 1H), 7.22 (d, J = 1.6 Hz, 1H), 6.54 (s, 1H), 4.19 (s, 3H), 4.02-4.00 (m, 4H), 3.56-3.54 (m, 4H). [00273] Intermediate 6: 4-(5-Chloro-2-(2-methoxyethyl)-2H-indazol-7-yl)morpholine [00274] To a stirred solution of 5-chloro-7-(morpholin-4-yl)-2H-indazole (0.50 g, 2.10 mmol) in N,N- dimethylformamide (5 mL) was added sodium hydride (0.13 g, 3.16 mmol, 60%) at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 0.5 h at room temperature under nitrogen atmosphere. To the above mixture was added 1-iodo-2-methoxyethane (0.47 g, 2.53 mmol). The reaction mixture was stirred for additional 2 h at room temperature. The resulting mixture was quenched with saturated aqueous NH4Cl (100 mL). The resulting mixture was extracted with ethyl acetate (3 x 100 mL). The combined organic layers was washed with saturated brine (100 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with petroleum ether/ethyl acetate (1/1). The fractions contained desired product were combined and concentrated to afford 4-(5-chloro-2-(2-methoxyethyl)-2H-indazol- 7-yl)morpholine (0.22 g, 35%) as a light brown solid. MS ESI calculated for C14H18ClN3O2 [M + H] + , 296.11, 298.11, found 295.95, 297.95; 1 H NMR (400 MHz, Chloroform-d) δ 7.93 (s, 1H), 7.22 (d, J = 1.6 Hz, 1H), 6.49 (s, 1H), 4.55 (t, J = 1.2 Hz, 2H), 3.88-3.86 (m, 4H), 3.86 (t, J = 4.8 Hz, 2H), 3.56-3.54 (m, 4H), 3.40 (s, 3H). [00275] And 4-(5-chloro-1-(2-methoxyethyl)-1H-indazol-7-yl)morpholine (0.34 g, 55%) as a light brown solid. MS ESI calculated for C 14 H 18 ClN 3 O 2 [M + H] + , 296.11, 298.11, found 296.00, 298.00; 1 H NMR (400 MHz, Chloroform-d) δ 7.98 (s, 1H), 7.46 (d, J = 1.6 Hz, 1H), 7.04 (d, J = 1.6 Hz, 1H), 4.90 (t J = 5.6 Hz, 2H), 4.02-3.99 (m, 2H), 3.89-3.84 (m, 4H), 3.31 (s, 3H), 3.16- 3.13 (m, 2H), 3.06-3.00 (m, 2H). [00276] The following compounds in Table 3 were prepared using procedures similar to those described in Intermediate 6 using appropriate starting materials. Table 3 [00277] Intermediate 9: 4-(5-Chloro-2-cyclopropyl-2H-indazol-7-yl)morpholine [00278] To a stirred mixture of 5-chloro-7-(morpholin-4-yl)-1H-indazole (0.15 g, 0.63 mmol) and cyclopropylboronic acid (0.11 g, 1.26 mmol) and bipyridyl (0.10 g, 0.63 mmol) in DCE (3 mL) were added Cu(OAc) 2 (0.11 g, 0.63 mmol) and Na 2 CO 3 (0.13 g, 1.26 mmol) in portions at room temperature. The reaction mixture was degassed with oxygen and stirred for 1.5 h at 60 °C. The resulting mixture was filtered, the filter cake was washed with DCM (3 x 20 mL). The filtrate was concentrated under reduced pressure. The residue was purified by Prep-TLC (PE / EA = 1/1). The fractions contained desired product were combined and concentrated to afford 4-(5- chloro-2-cyclopropyl-2H-indazol-7-yl)morpholine (128 mg, 73%) as an off-white solid. MS ESI calculated for C 14 H 16 ClN 3 O [M + H] + , 278.10, 280.10, found 278.00, 280.00. 1 H NMR (400 MHz, Chloroform-d) δ 7.89 (s, 1H), 7.18 (d, J = 1.6 Hz, 1H), 6.46 (s, 1H), 4.00-3.98 (m, 4H), 3.93-3.89 (m, 1H), 3.55-3.53 (m, 4H), 1.36-1.32 (m, 2H), 1.18-1.14 (m, 2H) And to afford 5-chloro-1-cyclopropyl-7-(morpholin-4-yl)indazole (101 mg, 57%) as an off- white solid. MS ESI calculated for C 14 H 16 ClN 3 O [M + H] + , 278.10, 280.10, found 278.00, 280.00; 1 H NMR (400 MHz, Chloroform-d) δ 7.83 (s, 1H), 7.42 (d, J = 1.6 Hz, 1H), 6.96 (d, J = 2.0 Hz, 1H), 4.58-4.53 (m, 1H), 3.94 (s, 4H), 3.15 (m, 4H), 1.43-1.37 (m, 2H), 1.10-1.05 (m, 2H). [00279] Intermediate 10: 5-Chloro-2-(difluoromethyl)-7-(morpholin-4-yl)indazole [00280] To a stirred solution of 5-chloro-7-(morpholin-4-yl)-2H-indazole (0.50 g, 2.10 mmol) and potassium carbonate (0.87 g, 6.31 mmol) in ethyl acetate (5 mL) was added difluoro(sulfo)acetic acid (0.45 g, 2.53 mmol) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 16 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with water (100 mL). The resulting mixture was extracted with ethyl acetate (3 x 100 mL). The combined organic layers was washed with saturated brine (100 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with ether/ethyl acetate (1/1). The fractions contained desired product were combined and concentrated to afford 5- chloro-2-(difluoromethyl)-7-(morpholin-4-yl)indazole (380 mg, 63%) as a light yellow solid. MS ESI calculated for C 12 H 12 ClF 2 N 3 O [M + H] + , 288.06, 290.06, found 287.90, 289.90; 1 H NMR (400 MHz, DMSO-d 6 ) δ 8.81 (s, 1H), 8.14 (t, J = 55.8 Hz, 1H), 7.34 (d, J = 1.6 Hz, 1H), 6.46 (d, J = 1.6 Hz, 1H), 3.63-3.60 (m, 4H), 3.51-3.49 (m, 4H); 19 F NMR (376 MHz, DMSO-d6) δ -94.76 (2F). [00281] Intermediate 11: 4-{6-Bromo-2-isopropylimidazo[1,2-a]pyridin-8-yl}morpholine [00282] Step 1.4-{6-Bromo-2-isopropylimidazo[1,2-a]pyridin-8-yl}morpholin e To a stirred solution of 5-bromo-3-(morpholin-4-yl)pyridin-2-amine (400 mg, 1.55 mmol) in EtOH (5 mL) was added 1-bromo-3-methylbutan-2-one (511 mg, 3.10 mmol). The reaction mixture was stirred for 16 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (8/3/1) to afford 4-{6-bromo-2-isopropylimidazo[1,2-a]pyridin-8-yl}morpholine (180 mg, 36%) as a grey solid. MS ESI calculated for C14H18BrN3O [M + H] + , 324.22, 326.22, found 324.05, 326.05; 1 H NMR (400 MHz, Chloroform-d) δ 7.84 (d, J = 1.6 Hz, 1H), 7.21 (s, 1H), 6.44 – 6.39 (m, 1H), 4.00-3.97 (m, 4H), 3.63-3.56 (m, 4H), 3.13-3.06 (m, 1H), 1.35 (d, J = 7.2 Hz, 6H). [00283] The following compounds in Table 4 were prepared using procedures similar to those described in Intermediate 11 using appropriate starting materials. Table 4
[00284] Example 1: (3S)-N-[2-Fluoro-4-methyl-5-[2-methyl-7-(morpholin-4-yl)inda zol-5-yl]phenyl]-3- (2,2,2-trifluoroethyl)pyrrolidine-1-carboxamide [00285] To a stirred mixture of 5-chloro-2-methyl-7-(morpholin-4-yl)indazole (0.12 g, 0.48 mmol) and (3S)-N-[2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxa borolan-2-yl)phenyl]-3-(2,2,2- trifluoroethyl)pyrrolidine-1-carboxamide (0.21 g, 0.48 mmol), K3PO4 (0.20 g, 0.95 mmol) in THF (2.00 mL) and H 2 O (0.20 mL) was added XPhos palladium(II) biphenyl-2-amine chloride (31 mg, 0.05 mmol) in portions at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 3 h at 80 °C. The resulting mixture was diluted with water (20 mL). The resulting mixture was extracted with EtOAc (3 x 20 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by Prep-TLC (PE/EtOAc/EtOH=3/1) (1/1) to afford crude product. The crude product was purified by reverse phase flash with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 40 g; Eluent A: Water (plus 10 mmol/L NH4HCO3); Eluent B: ACN; Gradient: 25% - 80% B in 20 min; Flow rate: 30 mL/min; Detector: 220/254 nm. The fractions contained desired product were combined and concentrated to afford (3S)-N-[2-fluoro-4-methyl-5-[2-methyl-7-(morpholin-4-yl)inda zol-5- yl]phenyl]-3-(2,2,2-trifluoroethyl)pyrrolidine-1-carboxamide (132.3 mg, 53%) as a white solid. MS ESI calculated for C26H29F4N5O2 [M + H] + , 520.23, found 520.25; 1 H NMR (300 MHz, DMSO-d 6 ) δ 8.27 (s, 1H), 7.84 (s, 1H), 7.37-7.35 (m, 1H), 7.12-7.06 (m, 2H), 6.02 (s, 1H), 4.16 (s, 3H), 3.81-3.79 (m, 4H), 3.69-3.63 (m, 1H), 3.55-3.32 (m, 6H), 3.05-2.99 (m, 1H), 2.49-2.40 (m, 3H), 2.21-2.08 (m, 4H), 1.71-1.67 (m, 1H); 19 F NMR (282 MHz, DMSO-d6) δ -63.39 (3F), - 126.58 (1F) [00286] The following compounds in Table 5 were prepared using procedures similar to those described in Example 1 using appropriate starting materials. Table 5
[00287] Example 7: (S)-N-(2-Fluoro-5-(2-isopropyl-8-morpholinoimidazo[1,2-a]pyr idin-6-yl)-4- methylphenyl)-3-(2,2,2-trifluoroethyl)pyrrolidine-1-carboxam ide To a stirred of 4-{6-bromo-2-isopropylimidazo[1,2-a]pyridin-8-yl}morpholine (75 mg, 0.23 mmol) and (3S)-N-[2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxa borolan-2-yl)phenyl]-3- (2,2,2-trifluoroethyl)pyrrolidine-1-carboxamide (100 mg, 0.23 mmol) in dioxane (0.8 mL) and water (0.2 mL) were added K2CO3 (96 mg, 0.69 mmol) and Pd(dppf)Cl2CH2Cl2 (19 mg, 0.02 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 3 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by Prep-TLC (petroleum ether/ethyl acetate/ethanol = 20/3/1) to afford the crude product. The crude product was purified by reverse phase Flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 40 g; Eluent A: water (Plus 10 mmol/L NH 4 HCO 3 ); Eluent B: ACN; Gradient: 25% to 80% B in 20 min; Flow rate: 30 mL/min; Detector: 220/254 nm. The fractions contained desired product were combined and concentrated to afford (S)-N-(2-fluoro-5-(2-isopropyl-8-morpholinoimidazo[1,2-a]pyr idin-6-yl)- 4-methylphenyl)-3-(2,2,2-trifluoroethyl)pyrrolidine-1-carbox amide (70.2 mg, 55%) as a white solid. MS ESI calculated for C 28 H 33 F 4 N 5 O 2 [M + H] + , 548.59 found 548.30; 1 H NMR (400 MHz, Chloroform-d) δ 8.08 (d, J = 8.4 Hz, 1H), 7.66 (s, 1H), 7.25 (s, 1H), 7.00 (d, J = 12.0 Hz, 1H), 6.32 (d, J = 15.2 Hz, 2H), 3.99 (d, J = 5.6 Hz, 4H), 3.86-3.82 (m, 1H), 3.72-3.62 (m, 1H), 3.58 (s, 4H), 3.52-3.45 (m, 1H), 3.18-3.10 (m, 2H), 2.60-2.56 (m, 1H), 2.36-2.25 (m, 2H), 2.28 (s, 1H), 2.24 (s, 3H), 1.84-1.74 (m, 1H), 1.38 (d, J = 6.9 Hz, 6H). 19 F NMR (376 MHz, Chloroform-d) δ -64.96 (3F), -134.62 (1F). [00288] The following compounds in Table 6 were prepared using procedures similar to those described in Example 7 using appropriate starting materials. Table 6
[00289] Example 16: (S)-N-(5-(2,3-dimethyl-7-morpholino-2H-indazol-5-yl)-2-fluor o-4-methylphenyl)- 3-(2,2,2-trifluoroethyl)pyrrolidine-1-carboxamide [00290] Step 1: 2-ethyl-6-fluoroaniline [00291] A mixture of 2-bromo-6-fluoroaniline (20.0 g, 105.3 mmol), triethylborane (15.7 g, 160.0 mmoL), Cs 2 CO 3 (102.9 g, 315.8 mmol) and Pd(dppf)Cl 2 (7.7 g, 10.5 mmol) in DMF (500 mL) was stirred at 55 °C for 1h under N 2 . To the reaction mixture was cooleded, added water (1000 mL) and extracted with EtOAc (500 mL*3). The combined organic layers were washed with water (500 mL*2) and brine (500 mL), dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by FCC (PE/EA = 20/1) to afford 2-ethyl-6- fluoroaniline (9.5 g, 64%) as colorless liquid. MS ESI calculated for C8H10FN [M + H] + , 140.08, found 140.00. [00292] Step 2: 4-bromo-2-ethyl-6-fluoroaniline [00293] To a mixture of 2-ethyl-6-fluoroaniline (9.5 g, 68.3 mmol) in DMF (200 mL) was added NBS (9.7 g, 54.6 mmol) at 0 °C. The reaction mixture was stirred at rt for 1h. The resulting mixture was added water (500 mL) and extracted with EA (200 mL*2). The combined organic layers were washed with water (200 mL*2) and brine (200 mL), dried over Na 2 SO 4 , filtered and concentrated under reduced pressure. The residue was purified by FCC (PE/EA = 20/1) to afford 4-bromo-2-ethyl-6-fluoroaniline (11.0 g, 74%) as pale brown oil. MS ESI calculated for C 8 H 9 BrFN [M + H] + , 217.99, found 218.00. [00294] Step 3: 5-bromo-1-ethyl-3-fluoro-2-nitrobenzene [00295] To a mixture of H2O2 (158.5 g, 30%, 276.5 mmol) in DCM (120 mL) was added TFAA (30.7 mL, 222.0 mmol) at 0 °C. The reaction mixture was stirred at 0 °C for 10 min. Then to the reaction mixture was added a solution of 4-bromo-2-ethyl-6-fluoroaniline (10.0 g, 46.0 mmol) in DCM (30 mL) at 0 °C. The reaction was stirred at 40 °C for 10h. The resulting mixture was added water (100 mL) and extracted with EA (200 mL). The organic layer was dried over Na 2 SO 4 , filtered and concentrated under reduced pressure. The residue was purified by FCC (PE/EA = 20/1) to afford 5-bromo-1-ethyl-3-fluoro-2-nitrobenzene (6.0 g, 52%) as a pale brown solid. MS ESI calculated for C8H7BrFNO2 [M + H] + , 247.96, found 247.90. [00296] Step 4: 4-(5-bromo-3-ethyl-2-nitrophenyl)morpholine [00297] To a mixture of 5-bromo-1-ethyl-3-fluoro-2-nitrobenzene (6.0 g, 24.1 mmol) in DMSO (100 mL) was added morpholine (3.1 g, 36.2 mmol) and K2CO3 (6.6 g, 48.3 mmol ) at rt. The reaction was stirred at 60 °C for 16h. The resulting mixture was cooleded to rt, added water (200 mL) and extracted with EA (200 mL). The organic layer was dried over Na 2 SO 4 , filtered and concentrated under reduced pressure. The residue was purified by FCC (PE/EA = 5/1) to afford 4-(5-bromo-3-ethyl-2-nitrophenyl)morpholine (4.3 g, 56.4%) as brown oil. MS ESI calculated for C 12 H 15 BrN 2 O 3 [M + H] + , 315.03, found 315.00. [00298] Step 5: 4-bromo-2-ethyl-6-morpholinoaniline [00299] To a mixture of 4-(5-bromo-3-ethyl-2-nitrophenyl)morpholine (4.3 g, 13.6 mmol) in EtOH/H2O (70/70 mL) was added Fe (7.6 g, 136.5 mmol) and NH 4 Cl (7.3 g, 136.5 mmol ) at rt. The reaction was stirred at 70 °C for 2h. The resulting mixture was cooled to rt, added water (100 mL), filtered and washed with EA (100 mL). The organic layer was concentrated. The residue was diluted with water (100 mL) and extracted with EA (200 mL). The organic layer was dried over Na 2 SO 4 , filtered and concentrated under reduced pressure. The residue was purified by FCC (PE/EA = 10/1) to afford 4-bromo-2-ethyl-6-morpholinoaniline (3.1 g, 80%) as brown oil. MS ESI calculated for C12H17BrN2O [M + H] + , 285.05, found 285.00. [00300] Step 6: 4-(5-bromo-3-methyl-1H-indazol-7-yl)morpholine [00301] To a mixture of 4-bromo-2-ethyl-6-morpholinoaniline (1.5 g, 5.2 mmol) in AcOH (35 mL) was added NaNO2 (0.39 g, 5.78 mmol) at 0 °C. The reaction mixture was stirred at rt for 4h. The resulting mixture was concentrated. The residue was diluted with EtOAc (100 mL) and adjusted pH 7 with sat NaHCO 3 . The organic layer was dried over Na 2 SO 4 , filtered and concentrated under reduced pressure. The residue was purified by FCC (PE/EA = 2/1) to afford 4-(5-bromo- 3-methyl-1H-indazol-7-yl)morpholine (340 mg, 22%) as a brown solid. MS ESI calculated for C 12 H 14 BrN 3 O [M + H] + , 296.03, found 296.00. [00302] Step 7: 4-(5-bromo-2,3-dimethyl-2H-indazol-7-yl)morpholine [00303] To a mixture of 4-(5-bromo-3-methyl-1H-indazol-7-yl)morpholine (290 mg, 0.97 mmol) in EtOAc (35 mL) was added trimethyloxonium tetrafluoroborate (188 mg, 1.27 mmol) at rt. The reaction mixture was stirred at rt for 2h. The reaction mixture was filtered and washed with EA (100 mL). The filtrate was evoparated. The residue was diluted with water (100 mL) and extracted with EA (100 mL). The organic layer was dried over Na 2 SO 4 , filtered and concentrated under reduced pressure. The residue was purified by FCC (PE/EA = 2/1) to afford 4-(5-bromo-2,3-dimethyl-2H-indazol-7-yl)morpholine (195 mg, 64%) as a brown solid. MS ESI calculated for C13H16BrN3O [M + H] + , 310.05, found 310.00. [00304] Example 16: (S)-N-(5-(2,3-dimethyl-7-morpholino-2H-indazol-5-yl)-2-fluor o-4-methylphenyl)- 3-(2,2,2-trifluoroethyl)pyrrolidine-1-carboxamide [00305] A mixture of 4-(5-bromo-2,3-dimethyl-2H-indazol-7-yl)morpholine (50 mg, 0.16 mmol), (S)-N- (2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan -2-yl)phenyl)-3-(2,2,2- trifluoroethyl)pyrrolidine-1-carboxamide (69 mg, 0.16 mmoL), Cs 2 CO 3 (104 mg, 0.32 mmol) and Pd(dppf)Cl2 (11 mg, 0.01 mmol) in dioxane/H2O (10 mL/2 mL) was stirred at 80 °C for 3h under N2. The reaction mixture was cooled, added water (30 mL) and extracted with EtOAc (30 mL). The organic layer was washed with brine (40 mL), dried over anhydrous Na 2 SO 4 , filtered and concentrated under reduced pressure. The residue was purified by prep-HPLC (HCOOH) to afford (S)-N-(5-(2,3-dimethyl-7-morpholino-2H-indazol-5-yl)-2-fluor o-4-methylphenyl)-3- (2,2,2-trifluoroethyl)pyrrolidine-1-carboxamide (23.3 mg, 27.1%) as a white solid. MS ESI calculated for C27H31F4N5O2 [M + H] + , 534.24, found 534.20. 1 H NMR (400 MHz, DMSO- d 6 ), δ 7.83 (s, 1H), 7.35 (d, J = 8.4 Hz, 1H), 7.10 (d, J = 12.0 Hz, 1H), 7.02 (d, J = 0.8 Hz, 1H), 6.29 (d, J = 0.8 Hz, 1H), 4.03 (s, 3H), 3.80-3.78 (m, 4H), 3.58-3.52 (m, 1H), 3.52-3.44 (m, 1H), 3.41-3.42 (m, 4H), 3.04-3.01 (m, 1H), 2.56 (s, 3H), 2.49-2.41 (m, 4H), 2.20 (s, 3H), 2.10-2.02 (m, 1H), 1.68-1.63 (m, 1H). [00306] Example 17: (S)-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridi n-6-yl)phenyl)-3- (2,2,2-trifluoroethyl)pyrrolidine-1-carboxamide [00307] Step 1: 4-(6-chloroimidazo[1,2-a]pyridin-8-yl)morpholine [00308] A mixture of 8-bromo-6-chloroimidazo[1,2-a]pyridine (1.0 g, 4.33 mmol), morpholine (753 mg, 8.66 mmol), Pd 2 dba 3 (394 mg, 0.43 mmol), Binap (280 mg, 0.43 mmol) and Cs 2 CO 3 (2.82 g, 8.66 mmol) in dioxane (30 mL) was stirred at 100 °C for 5h under nitrogen atmosphere. The resulting mixture was cooled, filtered and concentrated under reduced pressure. The residue was purified by FCC (PE/EtOAc = 2/1) to afford 4-(6-chloroimidazo[1,2-a]pyridin-8-yl)morpholine (750 mg, 75%) as a yellow solid. MS ESI calculated for C11H12ClN3O [M + H] + , 238.07, found 238.1. [00309] Example 17: (S)-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridi n-6-yl)phenyl)-3- (2,2,2-trifluoroethyl)pyrrolidine-1-carboxamide [00310] A mixture of 4-(6-chloroimidazo[1,2-a]pyridin-8-yl)morpholine (100 mg, 0.42 mmol), (S)-N-(2- fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2- yl)phenyl)-3-(2,2,2 trifluoroethyl)pyrrolidine-1-carboxamide (180 mg, 0.42 mmol), Xphos G2 (32 mg, 0.04 mmol) and K3PO4 (178 mg, 0.84 mmol) in dioxane (10 mL) and H2O (2 mL) was stirred at 85 °C for 2h under nitrogen atmosphere. The resulting mixture was cooled, added water (20 mL) and extracted with EA (50 mL). The organic layer was dried over Na 2 SO 4 , filtered and concentrated under reduced pressure. The residue was purified by prep-HPLC to afford (S)-N-(2-fluoro-4- methyl-5-(8-morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)-3-( 2,2,2-trifluoroethyl)pyrrolidine- 1-carboxamide (113.4 mg, 53%) as a white solid. MS ESI calculated for C 25 H 27 F 4 N 5 O 2 [M + H] + , 506.21, found 506.10. 1 H NMR (400 MHz, DMSO-d6), δ 8.12 (s, 1H), 7.90 (s, 2H), 7.52 (s, 1H), 7.43 (d, J = 8.0 Hz, 1H), 7.17 (d, J = 11.6 Hz, 1H), 6.35 (br s, 1H), 3.80 (t, J = 4.4 Hz, 4H), 3.68-3.64 (m, 1H), 3.53 (s, 5H), 3.03 (t, J = 9.2 Hz, 1H), 2.50-2.41 (m, 4H), 2.25 (s, 3H), 2.14-2.07 (m, 1H), 1.71-1.61 (m, 1H). [00311] Example 18: (S)-N-(5-(2-cyclopropyl-8-morpholinoimidazo[1,2-a]pyridin-6- yl)-2-fluoro-4- methylphenyl)-3-(2,2,2-trifluoroethyl)pyrrolidine-1-carboxam ide [00312] Step 1: 8-bromo-6-chloro-2-cyclopropylimidazo[1,2-a]pyridine [00313] A suspension of 3-bromo-5-chloropyridin-2-amine (5.0 g, 24.2 mmol) and 2-bromo-1- cyclopropylethan-1-one (2.6 mL, 76.6 mmol) in EtOH (100 mL) was stirred at 95 °C for 16h. The reaction mixture was cooled and concentrated. The residue was slurried with EA (30 mL) to afford 8-bromo-6-chloro-2-cyclopropylimidazo[1,2-a]pyridine (5.2 g, 79%) as a gray solid. MS ESI calculated for C10H8BrClN2 [M + H] + , 270.96, Found:271.00. [00314] Step 2: 4-(6-chloro-2-cyclopropylimidazo[1,2-a]pyridin-8-yl)morpholi ne [00315] A mixture of 8-bromo-6-chloro-2-cyclopropylimidazo[1,2-a]pyridine (500 mg, 1.85 mmol), morpholine (241 mg, 2.77 mmol), Xphos G2 (145 mg, 0.18 mmol) and t-BuONa (354 mg, 3.69 mmol) in toluene (20 mL) was stirred at 90 °C for 16h under nitrogen atmosphere. The resulting mixture was cooled, added water (50 mL) and extracted with EA (100 mL). The organic layer dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by FCC (PE/EA = 1/1) to afford 4-(6-chloro-2-cyclopropylimidazo[1,2-a]pyridin-8- yl)morpholine (115 mg, 23%) as brown oil. MS ESI calculated for C 14 H 16 ClN 3 O [M + H] + , 278.10, found 278.10. [00316] Example 18: (S)-N-(5-(2-cyclopropyl-8-morpholinoimidazo[1,2-a]pyridin-6- yl)-2-fluoro-4- methylphenyl)-3-(2,2,2-trifluoroethyl)pyrrolidine-1-carboxam ide A mixture of 4-(6-chloro-2-cyclopropylimidazo[1,2-a]pyridin-8-yl)morpholi ne (64 mg, 0.23 mmol), (S)-N-(2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxab orolan-2-yl)phenyl)-3- (2,2,2-trifluoroethyl)pyrrolidine-1-carboxamide (100 mg, 0.23 mmol), Xphos G2 (18 mg, 0.02 mmol) and K 3 PO 4 (99 mg, 0.46 mmol) in dioxane (15 mL) and H 2 O (3 mL) was stirred at 85 °C for 1h under nitrogen atmosphere. The resulting mixture was cooled, added water (50 mL) and extracted with EA (100 mL). The organic layer dried over Na2SO4, filtered and concentrated under reduced pressure to give the crude residue. The residue was purified by Prep-HPLC to afford (S)-N-(5-(2-cyclopropyl-8-morpholinoimidazo[1,2-a]pyridin-6- yl)-2-fluoro-4- methylphenyl)-3-(2,2,2-trifluoroethyl)pyrrolidine-1-carboxam ide (67.9 mg, 54%) as a white solid. MS ESI calculated for C28H31F4N5O2 [M + H] + , 546.24, found 546.30. 1 H NMR (400 MHz, DMSO-d 6 ) δ 7.95 (d, J = 1.2 Hz, 1H), 7.89 (s, 1H), 7.61 (s, 1H), 7.40 (d, J = 8.0 Hz, 1H), 7.14 (d, J = 11.2 Hz, 1H), 6.27 (s, 1H), 3.80-3.78 (m, 4H), 3.68-3.64 (m, 1H), 3.52-3.49 (m, 5H), 3.30-3.33 (m, 1H), 3.05-3.00 (m, 1H), 2.50-2.40 (m, 3H), 2.22 (s, 3H), 2.07-1.99 (m, 2H), 1.66-1.64 (m, 1H), 0.92-0.88 (m, 2H), 0.80-0.75 (m, 2H). [00317] Example 19: 5-(tert-butyl)-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1 ,2-a]pyridin-6- yl)phenyl)-3,6-dihydropyridine-1(2H)-carboxamide [00318] Step 1: 3-(tert-butyl)pyridine [00319] A mixture of 5-(tert-butyl)-2-chloropyridine (5.0 g, 29.5 mmol), Pd/C ( 1.5g, 5%), NaHCO 3 (2.5 g, 29.5 mmol) in MeOH (50 mL) was stirred at rt for 5h under Hydrogen gas balloon atmosphere. The resulting mixture was filtered and concentrated under reduced pressure to afford 3-(tert-butyl)pyridine (3.4 g, 85%) as a white solid. MS ESI calculated for C 9 H 13 N [M + H] + , 136.10, found 136.10. [00320] Step 2: 3-(tert-butyl)-1-(4-methoxybenzyl)pyridin-1-ium bromide [00321] A mixture of 3-(tert-butyl)pyridine (3.4 g, 25.2 mmol), PMBBr (3.7 mL, 25.2 mmol) in Acetonitrile (50 mL) was stirred at rt for 3h under nitrogen atmosphere. The resulting mixture was eveporated. The residue was stirred with EA (50 mL), poured out solvent to afford 3-(tert- butyl)-1-(4-methoxybenzyl)pyridin-1-ium bromide (5.5 g, 65%) as brown oil. MS ESI calculated for C 17 H 22 BrNO [M + H-79] + , 336.09, found 257.2. [00322] Step 3: 5-(tert-butyl)-1-(4-methoxybenzyl)-1,2,3,6-tetrahydropyridin e [00323] A mixture of 3-(tert-butyl)-1-(4-methoxybenzyl)pyridin-1-ium bromide (5.5 g, 21.5 mmol) in MeOH (50 mL) was cooled to 0 °C. Then to the mixutre was added NaBH 4 (1.6 g, 42.9 mmol) slowley at 0 °C. The reaction mixture was stirred at rt for 5h. The resulting mixture was quenched with NaHCO3 solution to adjust pH 9 and extracted with EA (100 mL*2). The combined organic layer was dried over Na 2 SO 4 , filtered and concentrated under reduced pressure. The residue was purified by FCC (DCM/MeOH = 20/1) to afford 5-(tert-butyl)-1-(4- methoxybenzyl)-1,2,3,6-tetrahydropyridine (4.5 g, 81%) as pale yellow oil. MS ESI calculated for C17H25NO [M + H] + , 260.19, found 260.1. [00324] Step 4: 5-(tert-butyl)-1,2,3,6-tetrahydropyridine [00325] A mixture of 5-(tert-butyl)-1-(4-methoxybenzyl)-1,2,3,6-tetrahydropyridin e (4.5 g, 17.3 mmol) and 1-chloroethyl carbonochloridate (2.2 mL, 20.8 mmol) in DCE (60 mL) was stirred at 70 °C for 16h under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. Then to the residue was cooled, added MeOH (60 mL) and stirred at 70 °C for 2h under nitrogen atmosphere. The resulting mixture was cooled and concentrated under reduced pressure. The residue was used to next step directly. [00326] Step 5: tert-butyl 3-(tert-butyl)-5,6-dihydropyridine-1(2H)-carboxylate [00327] A mixture of 5-(tert-butyl)-1,2,3,6-tetrahydropyridine (17.3 mmol, crude) in DCM (30 mL) was cooled to 0 °C. Then to the mixture was added DIEA (8.4 mL, 51.6 mmol), followed by di-tert- butyl dicarbonate (4.5 g, 20.7 mmol) and stirred at rt for 5h. The resulting mixture was concentrated under reduced pressure. The residue was purified by FCC (PE/EA = 10/1) to afford tert-butyl 3-(tert-butyl)-5,6-dihydropyridine-1(2H)-carboxylate (3.0 g, 73%) as pale yellow oil. MS ESI calculated for C 14 H 25 NO 2 [M + H] + , 240.19, found 240.2. [00328] Step 6: 5-(tert-butyl)-1,2,3,6-tetrahydropyridine hydrochloride salt [00329] A mixture of tert-butyl 3-(tert-butyl)-5,6-dihydropyridine-1(2H)-carboxylate (3.0 g, 12.5 mmol) in EA/HCl (20 mL, 2N) was stirred at rt for 3h. The resulting mixture was concentrated under reduced pressure. The residue was used to next step directly. [00330] Step 7: 5-(tert-butyl)-N-(2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan-2- yl)phenyl)-3,6-dihydropyridine-1(2H)-carboxamide [00331] To a solution of 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2-yl)aniline (2.3 g, 9.1 mmol) and DIEA (7.5 mL, 45.8 mmol) in THF (50 mL) was added BTC (1.1 g, 3.6 mmol) at -78 °C under nitrogen atmosphere. The reaction mixture was stirred at -78 °C for 30 min. Then the HCl salt of 5-(tert-butyl)-1,2,3,6-tetrahydropyridine (12.5 mmol) was added to the mixture at -78 °C. The mixture was stirred at 0 °C for another 1h. The resulting mixture was dilutedd with H 2 O (50 mL). The resulting mixture was extracted with EtOAc (50 mL*2). The combined organic layers were washed with brine (40 mL), dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by FCC (PE/EA = 10/1) to afford 5-(tert-butyl)-N-(2- fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2- yl)phenyl)-3,6-dihydropyridine- 1(2H)-carboxamide (2.6 g, 68%) as a white solid. MS ESI calculated for C 23 H 34 BFN 2 O 3 [M + H] + , 417.26, found 417.20. [00332] Example 19: 5-(tert-butyl)-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1 ,2-a]pyridin-6- yl)phenyl)-3,6-dihydropyridine-1(2H)-carboxamide [00333] A mixture of 4-(6-chloroimidazo[1,2-a]pyridin-8-yl)morpholine (60 mg, 0.25 mmol), 5-(tert- butyl)-N-(2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dio xaborolan-2-yl)phenyl)-3,6- dihydropyridine-1(2H)-carboxamide (104 mg, 0.25 mmol), Xphos G2 (16 mg, 0.02 mmol) and K3PO4 (106 mg, 0.50 mmol) in dioxane (10 mL) and H2O (2 mL) was stirred at 85 °C for 1h under nitrogen atmosphere. The resulting mixture was cooled, added water (20 mL) and extracted with EA (50 mL). The organic layer was dried over Na 2 SO 4 , filtered and concentrated under reduced pressure. The residue was purified by prep-HPLC to afford 5-(tert-butyl)-N-(2- fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridin-6-yl)ph enyl)-3,6-dihydropyridine- 1(2H)-carboxamide (19.0 mg, 15%) as a white solid. MS ESI calculated for C 28 H 34 FN 5 O 2 [M + H] + , 492.27, found 492.1. 1 H NMR (400 MHz, DMSO-d 6 ), δ 8.27 (s, 1H), 8.10 (s, 1H), 7.88 (s, 1H), 7.49 (s, 1H), 7.33 (d, J = 8.0 Hz, 1H), 7.16 (d, J = 7.6 Hz, 1H), 6.33 (s, 1H), 5.62-5.60 (m, 1H), 3.95 (d, J = 1.6 Hz, 2H), 3.79 (t, J = 4.4 Hz, 4H), 3.53 (t, J = 4.4 Hz, 4H), 3.43 (t, J = 6.0 Hz, 2H), 2.24 (s, 3H), 2.11-2.10 (m, 2H), 1.06 (s, 9H). [00334] Example 20: N-(2-fluoro-5-(2-fluoro-8-morpholinoimidazo[1,2-a]pyridin-6- yl)-4- methylphenyl)-3-(2,2,2-trifluoroethyl)-2,5-dihydro-1H-pyrrol e-1-carboxamide
[00335] Step 1: 4-(6-chloro-2-fluoroimidazo[1,2-a]pyridin-8-yl)morpholine [00336] To a mixture of 4-(6-chloroimidazo[1,2-a]pyridin-8-yl)morpholine (1.0 g, 4.20 mmol) in THF (30 mL) was added NaH (250 mg, 60%, 6.3 mmol) at 0 °C. The reaction mixture was stirred at 0 °C for 15 min. Then to the reaction mixture was added selectfluor (2.98 g, 8.40 mmol) at 0°C. The reaction mixture was stirred at rt overnight. The reaction mixture was diluted with water (100 mL). The resulting mixture was extracted with EtOAc (100 mL*2). The combined organic layers were washed with brine (100 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by reversed phase column chromatography (PE/EA = 2/1) to afford 4-(6-chloro-2-fluoroimidazo[1,2-a]pyridin-8- yl)morpholine (90 mg, 8%) and 4-(6-chloro-3-fluoroimidazo[1,2-a]pyridin-8-yl)morpholine (150 mg, 14%) as a yellow semi-solid. 4-(6-chloro-2-fluoroimidazo[1,2-a]pyridin-8-yl)morpholine 1 H NMR (400 MHz, CDCl3) δ 7.88 (d, J = 6.0 Hz, 1H), 7.55 (d, J = 0.9 Hz, 1H), 7.44 (d, J = 0.9 Hz, 1H), 3.92-3.90 (m, 4H), 3.64- 3.61 (m, 4H). MS ESI calculated for C11H11ClFN3O [M + H] + , 256.06, found 256.00. 4-(6-chloro-3-fluoroimidazo[1,2-a]pyridin-8-yl)morpholine 1 H NMR (400 MHz, CDCl3) δ 7.61 (s, 2H), 6.40 (d, J = 6.8 Hz, 1H), 3.97-3.95 (m, 4H), 3.49-3.47 (m, 4H). MS ESI calculated for C 11 H 11 ClFN 3 O [M + H] + , 256.06, found 256.00. [00337] Example 20: N-(2-fluoro-5-(2-fluoro-8-morpholinoimidazo[1,2-a]pyridin-6- yl)-4- methylphenyl)-3-(2,2,2-trifluoroethyl)-2,5-dihydro-1H-pyrrol e-1-carboxamide [00338] A mixture of 4-(6-chloro-2-fluoroimidazo[1,2-a]pyridin-8-yl)morpholine (40 mg, 0.16 mmol), N-(2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborol an-2-yl)phenyl)-3-(2,2,2- trifluoroethyl)-2,5-dihydro-1H-pyrrole-1-carboxamide (67 mg, 0.16 mmol), Xphos G2 (12 mg, 0.02 mmol) and K 3 PO 4 (67 mg, 0.31 mmol) in dioxane (15 mL) and H 2 O (3 mL) was stirred at 85 °C for 1h under nitrogen atmosphere. The resulting mixture was cooled, added water (50 mL) and extracted with EA (100 mL). The organic layer dried over Na2SO4, filtered and concentrated under reduced pressure to give crude residue. The residue was purified by Prep-HPLC to afford N-(2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborol an-2-yl)phenyl)-3-(2,2,2- trifluoroethyl)-2,5-dihydro-1H-pyrrole-1-carboxamide (27.2 mg, 34%) as a white solid. MS ESI calculated for C 25 H 24 F 5 N 5 O 2 [M + H] + , 522.19, found 522.00. 1 H NMR (400 MHz, DMSO-d 6 ) δ 8.20 (d, J = 6.4 Hz, 1H), 8.03 (s, 1H), 7.86 (s, 1H), 7.51 (d, J = 0.8 Hz, 1H), 7.44 (d, J = 8.0 Hz, 1H), 7.20 (d, J = 11.6 Hz, 1H), 5.92 (s, 1H), 4.20 (s, 4H), 3.76-3.74 (m, 4H), 3.52-3.50 (m, 4H), 3.31-3.29 (m, 2H), 2.16 (s, 3H). [00339] Example 21: (S)-N-(2-fluoro-5-(3-fluoro-8-morpholinoimidazo[1,2-a]pyridi n-6-yl)-4- methylphenyl)-3-(2,2,2-trifluoroethyl)pyrrolidine-1-carboxam ide [00340] A mixture of 4-(6-chloro-3-fluoroimidazo[1,2-a]pyridin-8-yl)morpholine (32 mg, 0.13 mmol), (S)-N-(2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxab orolan-2-yl)phenyl)-3-(2,2,2- trifluoroethyl)pyrrolidine-1-carboxamide (54 mg, 0.13 mmol), Xphos G2 (10 mg, 0.01 mmol) and K 3 PO 4 (53 mg, 0.25 mmol) in dioxane (10 mL) and H 2 O (2 mL) was stirred at 85 °C for 1h under nitrogen atmosphere. The resulting mixture was cooled, added water (50 mL) and extracted with EA (100 mL). The organic layer dried over Na2SO4, filtered and concentrated under reduced pressure to give crude residue. The residue was purified by Prep-HPLC to afford (S)-N-(2-fluoro-5-(3-fluoro-8-morpholinoimidazo[1,2-a]pyridi n-6-yl)-4-methylphenyl)-3-(2,2,2- trifluoroethyl)pyrrolidine-1-carboxamide (30.5 mg, 46%) as a white solid. MS ESI calculated for C25H26F5N5O2 [M + H] + , 524.20, found 524.20. 1 H NMR (400 MHz, DMSO-d6) δ 7.96-7.93 (m, 2H), 7.63 (d, J = 0.8 Hz, 1H), 7.46 (d, J = 8.0 Hz, 1H), 7.22 (d, J = 11.6 Hz, 1H), 6.34 (d, J = 6.8 Hz, 1H), 3.81-3.79 (m, 4H), 3.68-3.64 (m, 1H), 3.54-3.45 (m, 5H), 3.34-3.30 (m, 1H), 3.03 (t, J = 9.2 Hz, 1H), 2.50-2.41 (m, 3H), 2.17 (s, 3H), 2.10-2.07 (m, 1H), 1.67-1.65 (m, 1H). [00341] The following compounds in Table 7 were prepared using procedures similar to those described in Example 17, 18, or 20 using appropriate starting materials.
Table 7
[00342] Example 33: N-(4-Methyl-3-(6-morpholino-3,4-dihydro-1H-pyrano[4',3':4,5] imidazo[1,2- a]pyridin-8-yl)phenyl)-2-(trifluoromethyl)isonicotinamide [00343] Step 1: To a stirred mixture of 3,5-dibromopyridin-2-amine (20 g, 79.39 mmol) and 1-chloro-1- [dicyclohexyl([2-[2,4,6-tris(propan-2-yl)phenyl]phenyl])-l^[ 5]-phosphanyl]-2H,3H,4H- benzo[c]1-aza-2-palladacyclohexane (0.59 g, 0.79 mmol) in THF (200 mL) were added morpholine (6.9 mL, 79.39 mmol) and LiHMDS (1 M in THF) (198.50 mL, 198.50 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at 65 o C under nitrogen atmosphere. The reaction mixture was allowed to cool down to room temperature. The resulting mixture was quenched by the addition of sat. NH4Cl (aq.) (300 mL) at room temperature. The resulting mixture was extracted with EA (3 x 200 mL). The combined organic layers were washed with brine (2 x 150 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EtOAc/EtOH = 4/3/1. The fractions containing the desired product were combined and concentrated to afford 5-bromo-3- morpholinopyridin-2-amine (9 g, 44%) as a light-yellow solid. MS ESI calculated for C 9 H 12 BrN 3 O [M + H] + , 258.02, found 258.00. 1 H NMR (300 MHz, CDCl 3 ) δ 7.88 (d, J = 2.1 Hz, 1H), 7.24 (d, J = 2.1 Hz, 1H), 4.77 (s, 2H), 3.86-3.82 (m, 4H), 2.93-2.90 (m, 4H) [00344] Step 2: To a stirred mixture of 5-bromo-3-(morpholin-4-yl)pyridin-2-amine (200.00 mg, 0.78 mmol) in EtOH (5.00 mL) was added 3-bromooxan-4-one (277.41 mg, 1.56 mmol). The reaction mixture was stirred at 80 °C for 48 h. The resulting mixture was concentrated under reduced pressure. The residue was purified by reverse flash chromatography with the following conditions: Column: C18 Column 120 g; Mobile Phase A: Water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: MeCN; Flow rate: 60 mL/min; Gradient: 30% B to 60% B in 30 min; 254/220 nm. The fractions containing the desired product were combined and concentrated to afford 8- bromo-6-morpholino-3,4-dihydro-1H-pyrano[4',3':4,5]imidazo[1 ,2-a]pyridine (66 mg, 25%) as a brown soild. MS ESI calculated for C 14 H 16 BrN 3 O 2 [M + H] + , 338.21, found 338.05; 1 H NMR (400 MHz, DMSO-d6) δ 7.49 (d, J = 1.6 Hz, 1H), 6.50 (d, J = 1.6 Hz, 1H), 4.89 (t, J = 1.4 Hz, 2H), 4.08 (t, J = 5.5 Hz, 2H), 4.03-3.95 (m, 4H), 3.64-3.53 (m, 4H), 2.99 (t, J = 5.6 Hz, 2H). [00345] Step 3: To a stirred solution of 2-(trifluoromethyl)pyridine-4-carboxylic acid (1.23 g, 6.43 mmol) and HATU (3.26 g, 8.58 mmol) in DMF (10 mL) were added TEA (2.38 mL, 23.57 mmol) and 4-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)anil ine (1 g, 4.29 mmol) at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1.5 h at room temperature. The resulting mixture was diluted with water (30 mL) and extracted with EA (3 x 80 mL). The combined organic layers were washed with brine (5 x 40 mL), dried over anhydrous Na2SO4 and filtered. The filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (3/1). The fractions containing the desired product were combined and concentrated to afford N-(4-methyl-3-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)phenyl)-2-(trifluoromethyl)isonicotinamide (1.45 g, 83%) as an off-white solid. MS ESI calculated for C 20 H 22 BF 3 N 2 O 3 [M + H] + , 407.17, found 406.90; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.63 (s, 1H), 8.98 (d, J = 5.0 Hz, 1H), 8.43-8.39 (m, 1H), 8.22 (dd, J = 5.1, 1.6 Hz, 1H), 7.98-7.88 (m, 2H), 7.21 (d, J = 8.3 Hz, 1H), 2.46 (s, 3H), 1.32 (s, 12H). [00346] Step 4: To a stirred mixture of 8-bromo-6-morpholino-3,4-dihydro-1H- pyrano[4',3':4,5]imidazo[1,2-a]pyridine (66.00 mg, 0.20 mmol) and N-[4-methyl-3-(4,4,5,5- tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-2-(trifluorometh yl)pyridine-4-carboxamide (87.20 mg, 0.22 mmol) in dioxane (4.00 mL) and H2O (1.00 mL) were added Pd(dppf)Cl2·CH2Cl2 (15.94 mg, 0.02 mmol) and K2CO3 (80.91 mg, 0.59 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by Prep-TLC, eluted with PE/EA/EtOH (4/3/1) to afford the crude product. The crude product was purified by reverse flash chromatography with the following conditions: Column: C18 Column 120 g; Mobile Phase A: Water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: MeCN; Flow rate: 60 mL/min; Gradient: 35% B to 65% B in 25 min; 254/220 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (45 mg, 42%) as a white solid. MS ESI calculated for C 28 H 26 F 3 N 5 O 3 [M + H] + , 538.54, found 538.20; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.71 (s, 1H), 9.00 (d, J = 5.0 Hz, 1H), 8.38 (s, 1H), 8.20 (d, J = 5.0 Hz, 1H), 7.85- 7.68 (m, 3H), 7.35 (d, J = 8.3 Hz, 1H), 6.41 (s, 1H), 4.89 (s, 2H), 3.99 (t, J = 5.4 Hz, 2H), 3.90- 3.74 (m, 4H), 3.54 (t, J = 4.5 Hz, 4H), 2.83 (t, J = 5.4 Hz, 2H), 2.27 (s, 3H). [00347] Example 34 and 35: N-(2-fluoro-5-(8-hydroxy-4-morpholino-6,7,8,9- tetrahydrobenzo[4,5]imidazo[1,2-a]pyridin-2-yl)-4-methylphen yl)-2- (trifluoromethyl)isonicotinamide [00348] Step 1 & 2: To a stirred mixture of 1,4-dioxaspiro[4.5]decan-8-one (6.00 g, 38.42 mmol) in THF (100.00 mL) was added LiHMDS (1 M in THF) (76.8 mL, 76.83 mmol) dropwise at -78 °C under nitrogen atmosphere. The reaction mixture was stirred for 30 min at -78 °C under nitrogen atmosphere. To the above mixture was added TMSCl (6.60 mL, 51.64 mmol) dropwise over 20 min at -78 °C. The reaction mixture was stirred for additional 30 min at -78 °C. The resulting mixture was quenched with NaHCO 3 at 0 °C and extracted with EA (3 x 200 mL). The combined organic layers were washed with brine (2 x 50 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. Then the residue was dissolved in THF (50.00 mL) and H 2 O (50.00 mL). To the above solution were added NaOAc (0.32 g, 3.91 mmol) and NBS (6.84 g, 38.43 mmol) in portions at 0 °C. The reaction mixture was stirred for 3 h at room temperature. The resulting mixture was quenched with NaHCO3 (aq.) and extracted with EtOAc (3 x 300 mL). The combined organic layers were washed with brine (2 x 100 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure to afford 7-bromo-1,4-dioxaspiro[4.5]decan-8- one (crude). To a stirred mixture of 7-bromo-1,4-dioxaspiro[4.5]decan-8-one (819.66 mg, 3.49 mmol) in EtOH (10.00 mL) was added 5-bromo-3-(morpholin-4-yl)pyridin-2-amine (600.00 mg, 2.33 mmol) in portions at room temperature. The reaction mixture was stirred for 16 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EtOAc (1/1). The fractions containing the desired product were combined and concentrated to afford 2-bromo-4-morpholino-6,9-dihydro- 7H-spiro[benzo[4,5]imidazo[1,2-a]pyridine-8,2'-[1,3]dioxolan e] (0.60 g, 65%) as a brown oil. MS ESI calculated for C17H20BrN3O3 [M + H] + , 394.07, found 394.10. [00349] Step 3: A solution of 12-bromo-10-(morpholin-4-yl)-1,8-diazaspiro[1,3-dioxolane-2, 4- tricyclo[7.4.0.0^[2,7]]tridecane]-2(7),8,10,12-tetraene (500 mg, 1.53 mmol) in HCl (6 M) (8 mL) was stirred for 1 h at 60 °C. The resulting mixture was concentrated under reduced pressure. The resulting mixture was basified to pH 9 with saturated NaHCO3 (aq.). The combined organic layers were washed with brine (2 x 100 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure The aqueous layer was extracted with EtOAc (3 x 50 mL). The residue was purified by Prep-TLC, eluted with PE/(EtOAc/EtOH) (1/(3/1)). The fractions containing the desired product were combined and concentrated to afford 2-bromo-4-morpholino-6,9-dihydrobenzo[4,5]imidazo[1,2-a]pyri din- 8(7H)-one (0.35 g, 65%) as a dark green oil. MS ESI calculated for C15H16BrN3O2 [M + H] + , 350.04, 352.04, found 350.05, 352.05. [00350] Step 4: To a stirred mixture of 2-bromo-4-morpholino-6,9-dihydrobenzo[4,5]imidazo[1,2- a]pyridin-8(7H)-one (300.00 mg, 0.86 mmol) in MeOH (5.00 mL) was added NaBH4 (38.89 mg, 1.03 mmol) in portions at room temperature. The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by Prep-TLC, eluted with PE/EtOAc (1/1). The fractions containing the desired product were combined and concentrated to afford 2-bromo-4-morpholino-6,7,8,9- tetrahydrobenzo[4,5]imidazo[1,2-a]pyridin-8-ol (200 mg, 66%) as a light brown solid. MS ESI calculated for C 15 H 18 BrN 3 O 2 [M + H] + , 352.06, 354.06, found 352.10, 354.10; 1 H NMR (300 MHz, CDCl3) δ 7.62 (d, J = 1.7 Hz, 1H), 6.51 (d, J = 1.7 Hz, 1H), 4.43 (s, 1H), 4.11-3.97 (m, 4H), 3.56-3.52 (m, 4H), 3.14-2.86 (m, 3H), 2.81-2.28 (m, 2H), 2.07-1.76 (m, 2H). [00351] Step 5: To a stirred mixture of N-[4-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2- yl)phenyl]-2-(trifluoromethyl)pyridine-4-carboxamide (230.65 mg, 0.57 mmol) and 2 -bromo-4- morpholino-6,7,8,9-tetrahydrobenzo[4,5]imidazo[1,2-a]pyridin -8-ol (200.00 mg, 0.57 mmol) in dioxane (6.00 mL) and H2O (1.00 mL) were added Pd(dppf)Cl2·CH2Cl2 (46.37 mg, 0.06 mmol) and Na 2 CO 3 (180.54 mg, 1.70 mmol) in portions at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by Prep-TLC, eluted with PE/(EtOAc/EtOH) (1/ (3/1)) to afford the crude product. The crude product was purified by reverse phase flash with the following conditions: Column: Spherical C18, 20~40 um, 120 g; Mobile Phase A: Water (Plus 10 mmol/L NH4HCO3); Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient of B: 35%~75%,20 min; Detector: 220 nm. The fractions containing the desired product were combined and concentrated to afford N-(3-(8-hydroxy-4-morpholino- 6,7,8,9-tetrahydrobenzo[4,5]imidazo[1,2-a]pyridin-2-yl)-4-me thylphenyl)-2- (trifluoromethyl)isonicotinamide (200 mg, 64%) as a light yellow solid. MS ESI calculated for C 29 H 28 F 3 N 5 O 2 [M + H] + , 552.21, found 552.15. [00352] Step 6: N-(3-(8-hydroxy-4-morpholino-6,7,8,9-tetrahydrobenzo[4,5]imi dazo[1,2-a]pyridin-2- yl)-4-methylphenyl)-2-(trifluoromethyl)isonicotinamide (200.00 mg) was purified by Prep- Chiral-HPLC with the following conditions: Column: CHIRALPAK-AD-H-UL001, 20 x 250m m, 5 µm; Mobile Phase A: Hex (0.5% 2 M NH 3 -MeOH)--HPLC, Mobile Phase B:IPA--HPLC; Flow rate:20 mL/min; Gradient:20 B to 20 B in 18 min; 220/254 nm; RT1 (Peak1): 10.805 min; Injection Volumn:0.5 mL. [00353] PEAK 1 (EXAMPLE 34, N-(2-fluoro-5-(8-hydroxy-4-morpholino-6,7,8,9- tetrahydrobenzo[4,5]imidazo[1,2-a]pyridin-2-yl)-4-methylphen yl)-2- (trifluoromethyl)isonicotinamide): The fractions (RT: 10.8 min) were combined and concentrated to afford the title compound (76.8 mg, 38%) as an off-white solid of undetermined absolute stereochemistry. MS ESI calculated for C 29 H 28 F 3 N 5 O 3 [M + H] + , 552.21, found 552.20; 1H NMR (300 MHz, DMSO-d6) δ 10.70 (s, 1H), 8.99 (d, J = 5.1 Hz, 1H), 8.37 (d, J = 1.5 Hz, 1H), 8.20 (d, J = 5.2 Hz, 1H), 7.74-7.70 (m, 3H), 7.34 (d, J = 8.3 Hz, 1H), 6.37 (s, 1H), 4.97 (d, J = 4.2 Hz, 1H), 4.14 (s, 1H), 3.81-3.77 (m, 4H), 3.55-3.51 (m, 4H), 3.06-3.02 (m, 1H), 2.86- 2.51 (m, 3H), 2.28 (s, 3H), 2.07-1.76 (m, 2H). [00354] PEAK 2 (EXAMPLE 35, N-(2-fluoro-5-(8-hydroxy-4-morpholino-6,7,8,9- tetrahydrobenzo[4,5]imidazo[1,2-a]pyridin-2-yl)-4-methylphen yl)-2- (trifluoromethyl)isonicotinamide): The fractions (RT: 14.2 min) were combined and concentrated to afford the title compound (75.6 mg, 38%) as an off-white solid of undetermined absolute stereochemistry. MS ESI calculated for C29H28F3N5O3 [M + H] + , 552.21, found 552.20; 1H NMR (300 MHz, DMSO-d 6 ) δ 10.70 (s, 1H), 8.99 (d, J = 5.0 Hz, 1H), 8.38 (s, 1H), 8.24-8.16 (m, 1H), 7.81-7.67 (m, 3H), 7.35 (d, J = 8.3 Hz, 1H), 6.37 (s, 1H), 4.97 (d, J = 4.2 Hz, 1H), 4.14 (s, 1H), 3.81-3.77 (m, 4H), 3.55-3.51 (m, 4H), 3.06-3.02 (m, 1H), 2.88-2.53 (m, 3H), 2.28 (s, 3H), 2.05-1.74 (m, 2H). [00355] Example 36: N-(4-Methyl-3-(9-morpholino-3,4-dihydro-1H-pyrano[3',4':4,5] imidazo[1,2- a]pyridin-7-yl)phenyl)-2-(trifluoromethyl)isonicotinamide [00356] Step 1: To a stirred mixture of 3,5-dibromopyridin-2-amine (10 g, 39.69 mmol) and oxan-3-one (7.95 g, 79.39 mmol) in dioxane (100 mL) was added sulfur (6.36 g, 198.49 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 48 h at 100 °C under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1) to afford the crude product. The crude product was purified by Prep-HPLC with the following conditions: Column: XBridge Shield RP18 OBD Column, 30 x 150 mm, 5 μm; Mobile Phase A: Water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 30% B to 40% B in 10 min, 40% B; WaveLength: 254 nm; RT1: 8.5 min. The fractions containing the desired product were combined and concentrated to afford 7,9-dibromo-3,4-dihydro-1H- pyrano[3',4':4,5]imidazo[1,2-a]pyridine (200 mg, 2%) as a light yellow solid. MS ESI calculated for C10H8Br2N2O [M + H] + , 330.90, 332.90, found 330.80332.80; 1 H NMR (300 MHz, CDCl3) δ 8.01 (d, J = 1.6 Hz, 1H), 7.56 (d, J = 1.6 Hz, 1H), 4.93 (d, J = 1.4 Hz, 2H), 4.13 (t, J = 5.5 Hz, 2H), 2.93 (t, J = 5.5 Hz, 2H). [00357] Step 2: To a stirred mixture of 7,9-dibromo-3,4-dihydro-1H-pyrano[3',4':4,5]imidazo[1,2- a]pyridine (185 mg, 0.56 mmol), morpholine (50.98 mg, 0.56 mmol) and 1-chloro-1- [dicyclohexyl([2-[2,4,6-tris(propan-2-yl)phenyl]phenyl])-l^[ 5]-phosphanyl]-2H,3H,4H- benzo[c]1-aza-2-palladacyclohexane (20.58 mg, 0.03 mmol) in THF (2 mL) was added LiHMDS (2.5 M in THF) (0.56 mL, 1.39 mmol) dropwise at 65 °C under nitrogen atmosphere. The resulting mixture was stirred for 2 h at 65 °C under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/4). The fractions containing the desired product were combined and concentrated to afford 7-bromo-9-morpholino-3,4-dihydro-1H- pyrano[3',4':4,5]imidazo[1,2-a]pyridine (60 mg, 31.84%) as an off-white solid. MS ESI calculated for C 14 H 16 BrN 3 O 2 [M+H] + , 338.04, 340.04, found 337.95, 339.95; 1 H NMR (300 MHz, CDCl 3 ) δ 7.67 (d, J = 1.6 Hz, 1H), 6.53 (d, J = 1.6 Hz, 1H), 4.89 (s, 2H), 4.11 (t, J = 5.5 Hz, 2H), 4.00-3.96 (m, 4H), 3.56-3.52 (m, 4H), 2.96-2.83 (m, 2H). [00358] Step 3: To a solution of 7-bromo-9-morpholino-3,4-dihydro-1H-pyrano[3',4':4,5]imidazo [1,2- a]pyridine (50 mg, 0.15 mmol) and N-[4-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2- yl)phenyl]-2-(trifluoromethyl)pyridine-4-carboxamide (72 mg, 0.18 mmol) in dioxane (5 mL) and H2O (1 mL) were added K2CO3 (40 mg, 0.30 mmol) and Pd(dppf)Cl2·CH2Cl2 (12 mg, 0.02 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by Prep-TLC, eluted with PE/EtOAc (1/5). The fractions containing the desired product were combined and concentrated to afford title compound (19.2 mg, 24%) as a white solid. MS ESI calculated for C 28 H 26 F 3 N 5 O 3 [M + H] + , 538.20, found 538.10; 1 H NMR (300 MHz, DMSO-d 6 ) δ 10.70 (s, 1H), 8.99 (d, J = 5.1 Hz, 1H), 8.38 (d, J = 1.4 Hz, 1H), 8.20 (d, J = 5.1 Hz, 1H), 7.85 (d, J = 1.3 Hz, 1H), 7.81-7.68 (m, 2H), 7.35 (d, J = 8.3 Hz, 1H), 6.42 (d, J = 1.5 Hz, 1H), 4.74 (s, 2H), 4.01 (t, J = 5.4 Hz, 2H), 3.81-3.77 (m, 4H), 3.55-3.51 (m, 4H), 2.91-2.86 (m, 2H), 2.28- 2.17 (m, 3H). [00359] Example 38: (3S)-N-[4-Methyl-3-(8-[8-oxa-3-azabicyclo[3.2.1]octan-3-yl]i midazo[1,2- a]pyridin-6-yl)phenyl]-3-(2,2,2-trifluoroethyl)pyrrolidine-1 -carboxamide [00360] Step 1: To a stirred mixture of 4-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)anil ine (2.00 g, 8.58 mmol) and DIEA (5.54 g, 42.89 mmol) in THF (100.00 mL) was added triphosgene (1.02 g, 3.44 mmol). The reaction mixture was stirred for 30 min at room temperature under nitrogen atmosphere. To the above mixture was added (3S)-3-(2,2,2- trifluoroethyl)pyrrolidine ·HCl salt (1.63 g, 8.58 mmol) dropwise at room temperature. The reaction mixture was stirred for additional 3 h at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (2/1). The fractions containing the desired product were combined and concentrated to afford (3S)-N-[4-methyl-3-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)phenyl]-3-(2,2,2-trifluoroethyl)pyrrolidin e-1-carboxamide (3.1 g, 88%) as an off-white solid. MS ESI calculated for C 20 H 28 BF 3 N 2 O 3 [M+H] + , 413.21, found 413.15; 1 H NMR (300 MHz, DMSO-d6) δ 8.14 (s, 1H), 7.67 (d, J = 2.3 Hz, 1H), 7.62-7.59 (m, 1H), 7.03 (d, J = 8.3 Hz, 1H), 3.69-3.65 (m, 1H), 3.55-3.51 (m, 1H), 3.31-3.27 (m, 1H), 3.04-3.00 (m, 1H), 2.51- 2.43 (m, 3H), 2.38 (s, 3H), 2.10-2.06 (m, 1H), 1.70-1.63 (m, 1H), 1.31 (s, 12H). [00361] Step 2: To a stirred mixture of 8-bromo-6-chloroimidazo[1,2-a]pyridine (500 mg, 2.16 mmol), Cs2CO3 (2.1 g, 6.48 mmol) and 8-oxa-3-azabicyclo[3.2.1]octane·HCl salt (0.48 g, 3.24 mmol) in dioxane (6.00 mL) was added RuPhos-PdCl-2nd G (0.17 g, 0.22 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 3 h at 80 °C. The resulting mixture was diluted with water (30 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 10 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford 3-[6-chloroimidazo[1,2-a]pyridin-8-yl]-8-oxa-3- azabicyclo[3.2.1]octane (140 mg, 23%) as a light yellow solid; MS ESI calculated for C13H14ClN3O [M + H] + , 264.08, 266.08, found 264.20, 266.20. [00362] Step 3: To a stirred mixture of 3-[6-chloroimidazo[1,2-a]pyridin-8-yl]-8-oxa-3- azabicyclo[3.2.1]octane (120 mg, 0.46 mmol), (3S)-N-[4-methyl-3-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)phenyl]-3-(2,2,2-trifluoroethyl)pyrrolidin e-1-carboxamide (187 mg, 0.46 mmol) and K 2 CO 3 (188 mg, 1.36 mmol) in THF (2.00 mL) and H 2 O (0.20 mL) was added XPhos Pd G2 (38 mg, 0.05 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 80 °C. The resulting mixture was diluted with water (10 mL) and extracted with EA (3 x 10 mL). The combined organic layers were washed with brine (2 x 10 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by prep-TLC, eluted with PE/EA/EtOH (4/3/1) to afford the crude product. The crude product was purified by reverse phase flash with the following conditions: Column: Spherical C18, 20~40 um, 120 g; Mobile Phase A: Water (Plus 10 mmol/L NH 4 HCO 3 ); Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient of B: 35%~75%,20 min; Detector: 220 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (88.9 mg, 37%) as a white solid; MS ESI calculated for C 27 H 30 F 3 N 5 O 2 [M + H] + , 514.24, found 514.30; 1 H NMR (300 MHz, CDCl 3 ) δ 7.73-7.69 (m, 1H), 7.63-7.61 (m, 1H), 7.54-7.50 (m, 1H), 7.42-7.38 (m, 1H), 7.32-7.30 (m, 1H), 7.22 (d, J = 8.2 Hz, 1H), 6.36-6.33 (m, 1H), 6.14 (s, 1H), 4.52-4.48 (m, 2H), 4.14-4.10 (m, 2H), 3.89-3.77 (m, 1H), 3.66 (t, J = 8.4 Hz, 1H), 3.47-3.42 (m, 1H), 3.16-3.12 (m, 3H), 2.65-2.51 (m, 1H), 2.32-2.23 (m, 8H), 2.07-2.03 (m, 2H), 1.85-1.71 (m, 1H). [00363] Example 43: 1-tert-Butyl-N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imida zo[1,2-a]pyridin-6- yl]phenyl}pyrrole-3-carboxamide [00364] Step 1: To a stirred solution of 1-tert-butylpyrrole-3-carboxylic acid (76.85 mg, 0.46 mmol), HATU (174.75 mg, 0.46 mmol) and TEA (155.03 mg, 1.53 mmol) in THF (1 mL) was added 2- fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6 -yl]aniline (100 mg, 0.31 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 1 h at 60 °C under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. The residue was purified by Prep-HPLC with the following conditions: Column: XBridge Shield RP18 OBD Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 42% B to 52% B in 10 min, 52% B; Wavelength: 254 nm; RT1: 8.02 min. The fractions containing the desired product were combined and concentrated to afford the title compound (39.3 mg, 26%) as an off- white solid. MS ESI calculated for C 27 H 30 FN 5 O 2 [M + H] + , 476.24, found 476.15; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.32 (s, 1H), 8.14 (d, J = 1.4 Hz, 1H), 7.89 (d, J = 1.2 Hz, 1H), 7.70 (t, J = 2.1 Hz, 1H), 7.54 (d, J = 8.0 Hz, 1H), 7.50 (d, J = 1.2 Hz, 1H), 7.24 (d, J = 11.5 Hz, 1H), 7.01 (t, J = 2.7 Hz, 1H), 6.59 (dd, J = 3.0, 1.8 Hz, 1H), 6.36 (d, J = 1.5 Hz, 1H), 3.83-3.77 (m, 4H), 3.55 (t, J = 4.8 Hz, 4H), 2.28 (s, 3H), 1.51 (s, 9H). [00365] Example 46: (R)-N-(2-Fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridi n-6-yl)phenyl)-1- (2,2,2-trifluoroethyl)pyrrolidine-3-carboxamide
[00366] Step 1: To a stirred mixture of methyl (3R)-pyrrolidine-3-carboxylate·HCl salt (1.00 g, 6.04 mmol), and potassium carbonate (2.50 g, 18.11 mmol) in N,N-dimethylformamide (10.00 mL) was added 1,1,1-trifluoro-2-iodoethane (1.90 g, 9.06 mmol). The reaction mixture was stirred for 16 h at 100 °C under nitrogen atmosphere. The resulting mixture was diluted with water (80.00 mL) and extracted with ethyl acetate (3 x 50 mL). The combined organic layers were washed with brine (2 x 50 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (5/1). The fractions containing the desired product were combined and concentrated to afford methyl (R)-1-(2,2,2-trifluoroethyl)pyrrolidine-3- carboxylate (800 mg, 62%) as a yellow liquid. MS ESI calculated for C8H12F3NO2 [M + H] + , 212.08, found 212.05. [00367] Step 2: To a stirred mixture of methyl (3R)-1-(2,2,2-trifluoroethyl)pyrrolidine-3-carboxylate (850 mg, 4.03 mmol) in THF (3.00 mL) and MeOH (3.00 mL) was added LiOH·H2O (506.66 mg, 12.08 mmol) in water (3.00 mL) . The reaction mixture was stirred for 2 h at room temperature. The resulting mixture was acidified to pH 6 with HCl (aq.). The resulting mixture was extracted with ethyl acetate (3 x 40 mL). The combined organic layers were washed with brine (3 x 20 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure to afford (R)-1-(2,2,2-trifluoroethyl)pyrrolidine-3- carboxylic acid (0.63 g, 79%) as a yellow oil. MS ESI calculated for C7H10F3NO2 [M + H] + , 198.07, found 198.00. [00368] Step 3: To a stirred mixture of (R)-1-(2,2,2-trifluoroethyl) pyrrolidine-3-carboxylic acid (100 mg, 0.51 mmol), HATU (289.29 mg, 0.76 mmol) and trimethylamine (256.63 mg, 2.54 mmol) in acetonitrile (1.00 mL) was added 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]aniline (165.54 mg, 0.51 mmol). The reaction mixture was stirred for 16 h at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase: ACN in water (Plus 10mmol/L NH4HCO3), 10% to 50% gradient in 10 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford title compound (23.2 mg, 9%) as an off-white solid. MS ESI calculated for C25H27F4N5O2 [M + H] + , 506.21, found 506.20; 1 H NMR (400 MHz, DMSO-d6) δ 9.74 (s, 1H), 8.13 (d, J = 1.5 Hz, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.79 (d, J = 8.1 Hz, 1H), 7.53 (s, 1H), 7.24 (d, J = 11.8 Hz, 1H), 6.36 (s, 1H), 3.81 (t, J = 4.7 Hz, 4H), 3.54 (t, J = 4.7 Hz, 4H), 3.32- 3.13 (m, 2H), 3.18-3.12 (m, 1H), 3.07-3.03 (m, 1H), 2.88-2.74 (m, 2H), 2.69-2.62 (m, 1H), 2.25 (s, 3H), 2.05-1.96 (m, 2H). [00369] Example 50: 2-(Tert-Butyl)-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1 ,2-a]pyridin-6- yl)phenyl)morpholine-4-carboxamide [00370] Step 1: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (200 mg, 0.61 mmol) and DIEA (0.53 mL, 3.06 mmol) in THF (12.71 mL) was added the solution of triphosgene (72.73 mg, 0.25 mmol) in THF (1 mL) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 30 min at room temperature under nitrogen atmosphere. To the above mixture was added 2-tert- butylmorpholine·HCl (110.11 mg, 0.61 mmol) in THF (1 mL) dropwise at room temperature. The reaction mixture was stirred for additional 2 h at room temperature. The resulting mixture was quenched with MeOH at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with DCM/MeOH (10/1). The fractions containing the desired product were combined and concentrated to afford 2-tert-butyl-N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imida zo[1,2- a]pyridin-6-yl]phenyl}morpholine-4-carboxamide (185 mg, 61%) as an off-white solid. MS ESI calculated for C27H34FN5O3 [M + H] + , 496.26, found 496.20 . [00371] Step 2: The 2-tert-Butyl-N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imida zo[1,2-a]pyridin-6- yl]phenyl}morpholine-4-carboxamide (230 mg, 0.46 mmol) was purified by Prep-CHIRAL- HPLC with the following conditions: Column: CHIRAL ART Amylose-SA, 2 x 25 cm, 5 μm; Mobile Phase A: Hex (0.5% 2 M NH3-MeOH)--HPLC, Mobile Phase B: MeOH: DCM=1: 1-- HPLC; Flow rate: 20 mL/min; Gradient: 20% B to 20% B in 10 min; Wave Length: 220/254 nm; RT1: 8.00 min; RT2: 9.37 min; Sample Solvent: MeOH--HPLC; Injection Volume: 0.3 mL. [00372] PEAK 1 (EXAMPLE 50, 2-(tert-butyl)-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1 ,2- a]pyridin-6-yl)phenyl)morpholine-4-carboxamide): The fractions (RT: 8.0 min) were combined and concentrated to afford the title compound (71.8 mg, 31%) as an off-white solid of undetermined absolute stereochemistry. MS ESI calculated for C27H34FN5O3 [M + H] + , 496.26, found 496.25 ; 1 H NMR (400 MHz, DMSO-d6) δ 8.34 (s, 1H), 8.11 (d, J = 1.4 Hz, 1H), 7.88 (d, J = 1.2 Hz, 1H), 7.50 (d, J = 1.2 Hz, 1H), 7.33 (d, J = 8.2 Hz, 1H), 7.17 (d, J = 11.6 Hz, 1H), 6.33 (d, J = 1.5 Hz, 1H), 4.01-3.97 (m, 1H), 3.95-3.84 (m, 2H), 3.80 (t, J = 4.7 Hz, 4H), 3.54 (t, J = 4.7 Hz, 4H), 3.42-3.36 (m, 1H), 2.99-2.97 (m, 1H), 2.91-2.79 (m, 1H), 2.66-2.64 (m, 1H), 2.25 (s, 3H), 0.91 (s, 9H). [00373] Example 60 and 61: N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridin-6- yl)phenyl)- 3-(1-methylcyclopropyl)pyrrolidine-1-carboxamide [00374] Step 1: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]aniline (100 mg, 0.31 mmol,) and Triethylamine (124 mg, 1.22 mmol) in tetrahydrofuran (1.5 mL) was added in portions at room temperature. To the above mixture was added triphosgene (36 mg, 0.12 mmol) in portions over 30 min at room temperature. To the above mixture was added 2,2,2-trifluoro-1l3-ethan-1-one compound with 3-(1- (trifluoromethyl)cyclopropyl)pyrrolidine 2,2,2-trifluoroacetate (134 mg, 0.46 mmol) dropwise at room temperature. The reaction mixture was stirred for additional 2 h at room temperature. The resulting mixture was quenched with methanol and concentrated under reduced pressure. The residue was purified by reverse phase Flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 120 g; Mobile Phase A: Water (Plus 10 mmol/L NH4HCO3); Mobile Phase B: acetonitrile; Gradient: 40% - 60% B in 20 min; Flow rate: 60 mL/min; Detector: 220/254 nm. The fractions containing the desired product were combined and concentrated to afford N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyri din-6- yl]phenyl}-3-[1-(trifluoromethyl)cyclopropyl]pyrrolidine-1-c arboxamide as an off-white solid. MS ESI calculated for C 27 H 29 F 4 N 5 O 2 [M + H] + , 532.23, found 532.15. [00375] Step 2: N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyri din-6-yl]phenyl}-3-[1- (trifluoromethyl)cyclopropyl]pyrrolidine-1-carboxamide (112 mg, 0.21 mmol) was purified by Chiral-Prep-HPLC with the following conditions: Column: Lux 5 µm Cellulose-4, 2.12 x 25 cm, 5 μm; Mobile Phase A: Hex--HPLC, Mobile Phase B: MeOH: EtOH=1: 1--HPLC; Flow rate: 20 mL/min; Gradient: 20% B to 20% B in 25 min; Wave Length: 220/254 nm; RT1: 19.36 min; RT2: 22.26 min; Sample Solvent: MeOH--HPLC; Injection Volume: 0.3 mL. [00376] PEAK 1 (EXAMPLE 60, N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridin-6- yl)phenyl)-3-(1-methylcyclopropyl)pyrrolidine-1-carboxamide) : The fractions (RT 19.36 min) were combined and concentrated to afford the title compound (29 mg, 25%) as an off-white solid of undetermined absolute stereochemistry. MS ESI calculated for C 27 H 29 F 4 N 5 O 2 [M + H] + , 532.23, found 532.30; 1 H NMR (400 MHz, DMSO-d6) δ 8.19 (s, 1H), 7.97-7.96 (m, 1H), 7.91- 7.89 (m, 1H), 7.63-7.59 (m, 1H), 7.44 (d, J = 8.1 Hz, 1H), 7.18 (d, J = 11.6 Hz, 1H), 6.50 (s, 1H), 3.81 (t, J = 4.6 Hz, 4H), 3.65-3.63 (m, 1H), 3.49-3.47 (m, 4H), 3.36-3.32 (m, 2H), 2.93- 2.91 (m, 1H), 2.74-2.68 (m, 1H), 2.25 (s, 3H), 1.93-1.86 (m, 1H), 1.49-1.44 (m, 1H), 0.91-0.85 (m, 4H). [00377] PEAK 2 (EXAMPLE 61, N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridin-6- yl)phenyl)-3-(1-methylcyclopropyl)pyrrolidine-1-carboxamide) : The fractions (RT 22.26 min) were combined and concentrated to afford the title compound (32 mg, 28%) as an off-white solid of undetermined absolute stereochemistry. MS ESI calculated for C 27 H 29 F 4 N 5 O 2 [M + H] + , 532.23, found 532.30; 1 H NMR (400 MHz, DMSO-d 6 ) δ 8.19 (s, 1H), 7.97-7.96 (m, 1H), 7.91- 7.89 (m, 1H), 7.63-7.59 (m, 1H), 7.44 (d, J = 8.1 Hz, 1H), 7.18 (d, J = 11.6 Hz, 1H), 6.50 (s, 1H), 3.81 (t, J = 4.6 Hz, 4H), 3.65-3.63 (m, 1H), 3.57-3.44 (m, 4H), 3.33-3.32 (m, 2H), 2.93- 2.91 (m, 1H), 2.74-2.68 (m, 1H), 2.25 (s, 3H), 1.93-1.86 (m, 1H), 1.47-1.45 (m, 1H), 0.91-0.85 (m, 4H). [00378] Example 66: 1-tert-Butyl-4-fluoro-N-{2-fluoro-4-methyl-5-[8-(morpholin-4 -yl)imidazo[1,2- a]pyridin-6-yl]phenyl}pyrrole-3-carboxamide
[00379] Step 1: To a stirred solution of 2-methylpropan-2-amine (50 g, 683.63 mmol) in AcOH (150 mL) was added 2,5-dimethoxyoxolane (50 g, 378.33 mmol) dropwise at 0 °C. The reaction mixture was stirred for 48 h at 80 °C. The mixture was allowed to cool down to room temperature. The resulting mixture was concentrated under reduced pressure. The residue was diluted with water and basified to pH 8 with NaOH (aq.). The resulting mixture was extracted with Diethyl ether (2 x 200 mL). The combined organic layers were washed with brine (1 x 200 mL), dried over Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The resulting mixture was concentrated under reduced pressure. The crude product was purified by distillation under 2 Mpa and the fraction was collected at 80 °C to afford 1-tert-butylpyrrole (5 g, 10%) as a colorless oil. 1 H NMR (400 MHz, CDCl3) δ 6.84 (t, J = 2.0 Hz, 2H), 6.16 (t, J = 2.0 Hz, 2H), 1.53 (s, 9H). [00380] Step 2: To a stirred solution of 1-tert-butylpyrrole (3.5 g, 28.41 mmol) in Tetrahydrofuran (40 mL) was added N-Bromosuccinimide (10.11 g, 56.82 mmol) in Tetrahydrofuran (140 mL) dropwise at -80 °C. The reaction mixture was stirred for 2 h at -80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with Ethyl acetate. The fractions containing the desired product were combined and concentrated to afford 3,4-dibromo-1-tert-butylpyrrole (7.71 g, 96%) as a colorless oil. 1 H NMR (400 MHz, CDCl 3 ) δ 6.80 (d, J = 1.2 Hz, 2H), 1.49 (s, 9H). [00381] Step 3: To a stirred solution of 3,4-dibromo-1-tert-butylpyrrole (3 g, 10.68 mmol) in Tetrahydrofuran (30 mL) was added 2.5 M n-BuLi in hexane (4.48 mL, 11.21 mmol) dropwise at -78 °C under nitrogen atmosphere. After stirred for 30 min, N-fluorobenzenesulfonimide (5.05 g, 16.01 mmol) in Tetrahydrofuran (30 mL) was added dropwise at -78 °C. The reaction mixture was stirred for 1 h at -78 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography with PE as eluant. The fractions containing the desired product were combined and concentrated to afford 3-bromo-1-tert-butyl- 4-fluoropyrrole (1.5 g, 63%) as a colorless oil. 1 H NMR (400 MHz, CDCl3) δ 6.59-6.55 (m, 2H), 1.47 (s, 9H). [00382] Step 4: To a stirred solution of 3-bromo-1-tert-butyl-4-fluoropyrrole (550 mg, 2.50 mmol) in Tetrahydrofuran (5.5 mL) was added butyllithium (1.05 mL, 2.62 mmol) dropwise at -78 °C under nitrogen atmosphere. The reaction mixture was stirred for 30 min at -78 °C under nitrogen atmosphere. To the above mixture was added propyl carbonochloridate (336.88 mg, 2.75 mmol) dropwise at -78 °C. The reaction mixture was stirred for additional 1 h at -78 °C. The resulting mixture was quenched by the addition of sat. Ammonium chloride (aq.) (20 mL) at 0 °C. The resulting mixture was extracted with Ethyl acetate (2 x 100 mL). The combined organic layers were washed with brine (1 x 100 mL), dried over anhydrous Sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (8/1). The fractions containing the desired product were combined and concentrated to afford propyl 1-tert-butyl-4-fluoropyrrole-3-carboxylate (360 mg, 63%) as a yellow oil. MS ESI calculated for C12H18FNO2 [M + H] + , 228.13, found 228.10; 1 H NMR (400 MHz, CDCl3) δ 7.18-7.16 (m, 1H), 6.56-6.54 (m, 1H), 4.19 (t, J = 6.4 Hz, 2H), 1.78- 1.69 (m, 2H), 1.50 (s, 9H), 1.00 (t, J = 7.2 Hz, 3H). [00383] Step 5: To a stirred solution of propyl 1-tert-butyl-4-fluoropyrrole-3-carboxylate (320 mg, 1.41 mmol) in Methanol (3.2 mL), Tetrahydrofuran (3.2 mL) and Water (3.2 mL) was added Lithium hydroxide (134.88 mg, 5.63 mmol) dropwise at room temperature. The reaction mixture was stirred for 16 h at 50 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, Acetonitrile in Water (Plus 10 mmol/L NH 4 HCO 3 ), 10% to 50% gradient in 10 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 1-tert-butyl-4-fluoropyrrole-3-carboxylic acid (200 mg, 76%) as a white solid. MS ESI calculated for C9H12FNO2 [M + H] + , 186.09, found 186.05; 1 H NMR (400 MHz, DMSO-d 6 ) δ 7.06 (dd, J = 4.2, 3.2 Hz, 1H), 6.85-6.83 (m, 1H), 1.43 (s, 9H). [00384] Step 6: To a stirred mixture of 1-tert-butyl-4-fluoropyrrole-3-carboxylic acid (60.15 mg, 0.32 mmol), 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6-yl]aniline (53 mg, 0.16 mmol), EDCI (46.70 mg, 0.24 mmol), HOBt (32.91 mg, 0.24 mmol) in N,N-Dimethylformamide (0.3 mL) was added Triethylamine (65.73 mg, 0.65 mmol) dropwise at room temperature. The reaction mixture was stirred for additional 48 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in Water (Plus 10 mmol/L NH4HCO3), 10% to 50% gradient in 10 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (12.1 mg, 15%) as an off-white solid. MS ESI calculated for C27H29F2N5O2 [M + H] + , 494.23, found 494.20; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.01 (s, 1H), 8.13 (d, J = 1.2 Hz, 1H), 7.89 (d, J = 1.2 Hz, 1H), 7.69 (d, J = 8.0 Hz, 1H), 7.53-7.46 (m, 2H), 7.25 (d, J = 11.6 Hz, 1H), 7.07 (t, J = 2.8 Hz, 1H), 6.35 (d, J = 1.2 Hz, 1H), 3.80 (t, J = 4.0 Hz, 4H), 3.55 (t, J = 3.6Hz, 4H), 2.28 (s, 3H), 1.48 (s, 9H). [00385] Example 67: 1-tert-Butyl-N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imida zo[1,2-a]pyridin-6- yl]phenyl}imidazole-4-carboxamide [00386] Step 1: To a stirred solution of ethyl 2-isocyanoacetate (5 g, 44.20 mmol) in EtOH (50 mL) was added DMF-DMA (6.46 g, 88.40 mmol) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 16 h at room temperature under nitrogen atmosphere. The resulting mixture was diluted with water (100 mL) and extracted with EtOAc (3 x 100 mL). The combined organic layers were washed with brine (3 x 80 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford ethyl (2Z)-3-(dimethylamino)-2- isocyanoprop-2-enoate (5.26 g, 71%) as a yellow solid. MS ESI calculated for C8H12N2O2 [M + H] + , 169.19, found 169.10; 1 H NMR (400 MHz, Chloroform-d) δ 7.20 (s, 1H), 4.24-4.13 (m, 2H), 3.25 (s, 6H), 1.32 (t, J = 4.2 Hz, 3H). [00387] Step 2: A solution of ethyl (2Z)-3-(dimethylamino)-2-isocyanoprop-2-enoate (100 mg, 0.60 mmol) in 2-methylpropan-2-amine (1 mL) was stirred for 24 h at 140 °C. The resulting mixture was concentrated under reduce pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (4/3/1) to afford the crude product. The crude product was further purified by reverse phase Flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 40 g; Eluent A: Water (Plus 10 mmol/L NH4HCO3); Eluent B: ACN; Gradient: 40% to 60% B in 25 min; Flow rate: 30 mL/min; Detector: 220/254 nm. The fractions containing the desired product were combined and concentrated to afford ethyl 1-tert-butylimidazole-4-carboxylate (80 mg, 69%) as a yellow solid. MS ESI calculated for C 10 H 16 N 2 O 2 [M + H] + , 197.25, found 197.10; 1 H NMR (400 MHz, Chloroform-d) δ 7.76 (d, J = 1.6 Hz, 1H), 7.66 (d, J = 1.6 Hz, 1H), 4.42-4.36 (m, 2H), 1.61 (s, 9H), 1.41 (t, J = 4.2 Hz, 3H). [00388] Step 3: To a stirred solution of ethyl 1-tert-butylimidazole-4-carboxylate (80 mg, 0.41 mmol) in MeOH (1 mL) and THF (1 mL) was added LiOH·H 2 O (51.31 mg, 1.22 mmol) in H 2 O (1 mL). The reaction mixture was stirred for 1 h at 60 °C. The resulting mixture was concentrated under reduced pressure to afford 1-tert-butylimidazole-4-carboxylic acid (50 mg, crude). MS ESI calculated for C 8 H 12 N 2 O 2 [M + H] + , 169.19, found 169.10. [00389] Step 4: To a stirred solution of 1-tert-butylimidazole-4-carboxylic acid (50 mg, 0.29 mmol) in Pyridine (1 mL) were added T3P (233.98 mg, 0.38 mmol, 50% in EA) and 2-fluoro-4-methyl-5- [8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6-yl]aniline (80 mg, 0.25 mmol) at room temperature. The reaction mixture was stirred for 2 h at 60 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by reverse phase Flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 40 g; Eluent A: Water (Plus 10 mmol/L NH 4 HCO 3 ); Eluent B: ACN; Gradient: 40% to 60% B in 25 min; Flow rate: 30 mL/min; Detector: 220/254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (4.8 mg, 4%) as a white solid. MS ESI calculated for C 26 H 29 FN 6 O 2 [M + H] + , 477.55 found 477.30; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.44 (s, 1H), 8.16 (d, J = 1.2 Hz, 1H), 8.05-7.97 (m, 3H), 7.91 (d, J = 1.2 Hz, 1H), 7.52 (d, J = 1.2 Hz, 1H), 7.30 (d, J = 11.8 Hz, 1H), 6.37 (d, J = 1.6 Hz, 1H), 3.80 (d, J = 4.8 Hz, 4H), 3.56 (d, J = 5.2 Hz, 4H), 2.29 (s, 3H), 1.56 (s, 9H). [00390] Example 69: N-(2-Fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridin-6- yl)phenyl)-3-(1- methylcyclopropyl)-2,5-dihydro-1H-pyrrole-1-carboxamide [00391] Step 1: To a stirred solution of tert-butyl 3-oxopyrrolidine-1-carboxylate (10 g, 53.99 mmol) in Tetrahydrofuran (1 L) was added Lithium bis(trimethylsilyl)amide (100 mL, 100.00 mmol) dropwise at -78 °C under a nitrogen atmosphere. The reaction mixture was stirred for 0.5 h at - 78 °C under a nitrogen atmosphere. To the above mixture was added 1,1,1-trifluoro-N-phenyl-N- trifluoromethanesulfonylmethanesulfonamide (21.22 g, 59.39 mmol) in THF (20 mL) dropwise at -78 °C. The reaction mixture was stirred for additional 2 h at -45 °C. The resulting mixture was quenched with sat. Ammonium chloride (aq.) and extracted with EtOAc (2 x 200 mL). The combined organic layers wad washed with brine (1 x 100 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (20/1). The fractions containing the desired product were combined and concentrated to afford tert-butyl 3- (trifluoromethanesulfonyloxy)-2,5-dihydropyrrole-1-carboxyla te (15 g, 87%) as a brown oil. MS ESI calculated for C10H14F3NO5S [M + H] + , 318.05, found 318.00. [00392] Step 2: To a stirred solution of tert-butyl 3-(trifluoromethanesulfonyloxy)-2,5-dihydropyrrole-1- carboxylate (4 g, 12.61 mmol), 1,1'-Bis(diphenylphosphino)ferrocene-palladium(II)dichloride dichloromethane complex (1.03 g, 1.26 mmol) and Cesium carbonate (8.22 g, 25.21 mmol) in dioxane (40 mL) and Water (10 mL) was added 4,4,5,5-tetramethyl-2-(prop-1-en-2-yl)-1,3- dioxolane (2.58 g, 15.13 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 1 h at 100 °C. The resulting mixture was diluted with water (200 mL). The resulting mixture was extracted with Ethyl acetate (2 x 200 mL). The combined organic layers were washed with brine (2 x 100 mL), dried over anhydrous Sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (9/1). The fractions containing the desired product were combined and concentrated to afford tert-butyl 3-(prop-1-en-2-yl)-2,5-dihydropyrrole-1- carboxylate (1.3 g, 49%) as a colorless oil. MS ESI calculated for C 12 H 19 NO 2 [M + H ] + , 210.1 found 210.1. [00393] Step 3: To a stirred solution of diiodomethane (5.62 mL, 69.76 mmol) in dichloromethane (15 mL) was added diethylzinc (11.87 mL, 69.76 mmol) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 15 min at 0 °C under nitrogen atmosphere. To the above mixture was added tert-butyl 3-(prop-1-en-2-yl)-2,5-dihydropyrrole-1-carboxylate (1.46 g, 6.98 mmol) dropwise at 0 °C. The reaction mixture was stirred for additional 16 h at room temperature. The resulting mixture was quenched by the addition of sat. ammonium chloride (aq.) (50 mL) at room temperature. The resulting mixture was diluted with water (150 mL) and extracted with Ethyl acetate (2 x 200 mL). The combined organic layers were washed with brine (1 x 200 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, Acetonitrile in Water (Plus 10mmol/L NH4HCO3), 40% to 60% gradient in 20 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford tert-butyl 3-(1- methylcyclopropyl)-2,5-dihydropyrrole-1-carboxylate (80 mg, 5%) as a yellow solid. MS ESI calculated for C13H21NO2 [M + H] + , 224.1, found 224.1; 1 H NMR (400 MHz, CDCl3) δ 5.36- 5.34 (m, 1H), 4.09-4.06 (m, 2H), 3.92-3.88 (m, 2H), 1.47 (s, 9H), 1.23 (s, 3H), 0.73-0.71 (m, 2H), 0.52-0.50 (m, 2H). [00394] Step 4: To a stirred solution of tert-butyl 3-(1-methylcyclopropyl)-2,5-dihydropyrrole-1- carboxylate (70 mg, 0.31 mmol) in Dichloromethane (4 mL) was added 2,2,2-trifluoroacetic acid (0.8 mL) dropwise at room temperature. The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was concentrated under reduced pressure. The fractions containing the desired product were combined and concentrated to afford 3-(1- methylcyclopropyl)-2,5-dihydro-1H-pyrrole 2,2,2-trifluoroacetate (80 mg, 92%) as a black oil. MS ESI calculated for C 10 H 14 F 3 NO [M + H] + , 124.10, found 124.10. [00395] Step 5: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (110.65 mg, 0.34 mmol) and ditrichloromethyl carbonate (40.24 mg, 0.14 mmol) in Tetrahydrofuran (1 mL) was added N,N-Diisopropylethylamine (0.30 mL, 1.70 mmol) dropwise at room temperature under a nitrogen atmosphere. The reaction mixture was stirred for 15 min at room temperature under nitrogen atmosphere. To the above mixture was added 3-(1- methylcyclopropyl)-2,5-dihydro-1H-pyrrole 2,2,2-trifluoroacetate (75 mg, 0.40 mmol) dropwise at room temperature. The reaction mixture was stirred for additional 1 h at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with DCM/MeOH (10/1) to afford the crude product. The crude product was purified by Prep-HPLC with the following conditions Column: Xselect CSH F-Phenyl OBD column, 19 x 250 mm, 5 μm; Mobile Phase A: Water (0.1% FA), Mobile Phase B: ACN; Flow rate: 20 mL/min; Gradient: 20% B to 25% B in 8 min, 25% B; Wavelength: 254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (20 mg, 12%) as a white solid. MS ESI calculated for C27H30FN5O2 [M + H] + , 476.24, found 476.25; 1 H NMR (400 MHz, DMSO-d6) δ 8.37 (s, 1H), 8.13 (m, 1H), 7.90 (m, 2H), 7.52 (d, J = 8.0 Hz, 1H), 7.22 (d, J = 11.6 Hz, 1H), 6.88 (s, 1H), 5.54-5.52 (m, 1H), 4.16 (s, 2H), 4.01 (s, 2H), 3.83 (t, J = 4.6 Hz, 4H), 3.33 (t, J = 4.6 Hz, 4H), 2.25 (s, 3H), 1.23 (s, 3H), 0.79-0.77 (m, 2H), 0.58-0.51 (m, 2H). [00396] Example 70: N-(2-Fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridin-6- yl)phenyl)-5- (trifluoromethyl)nicotinamide
[00397] STEP 1. To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (60 mg, 0.18 mmol), 5-(trifluoromethyl)pyridine-3-carboxylic acid (42.16 mg, 0.22 mmol) and 2-(7-Azabenzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate (104.85 mg, 0.28 mmol) in N,N-Dimethylformamide (1 mL) was added Triethylamine (93.02 mg, 0.92 mmol) dropwise at room temperature. The reaction mixture was stirred for additional 16 h at room temperature. The resulting mixture was diluted with water (20 mL) extracted with Ethyl acetate (3 x 30 mL). The combined organic layers were washed with brine (3 x 30 mL), dried over anhydrous Sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in Water (Plus 10 mmol/L NH4HCO3), 40% to 70% gradient in 30 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford N-{2-fluoro-4-methyl-5-[8-(morpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]phenyl}-5-(trifluoromethyl)pyr idine-3-carboxamide (67.8 mg, 73%) as a light blue solid. MS ESI calculated for C25H21F4N5O2 [M + H] + , 500.16, found 500.20; 1 H NMR (400 MHz, CDCl 3 ) δ 9.31 (s, 1H), 9.10 (s, 1H), 8.47 (s, 1H), 8.33 (d, J = 8 Hz, 1H), 8.07 (s, 1H), 7.80 (s, 1H), 7.65 (s, 1H), 7.59 (s, 1H), 7.15 (d, J = 11.6 Hz, 1H), 6.40 (s, 1H), 4.03-3.96 (m, 4H), 3.59-3.52 (m, 4H), 2.32 (s, 3H). [00398] Example 73: 1-(tert-Butyl)-5-fluoro-N-(4-methyl-3-(8-morpholinoimidazo[1 ,2-a]pyridin-6- yl)phenyl)-1H-pyrazole-4-carboxamide
[00399] Step 1: To a stirred solution of 4-bromo-3-fluoro-1H-pyrazole (1 g, 6.06 mmol) in t-BuOH (10 mL) was added H2SO4 (0.36 mL, 6.67 mmol, 98%) dropwise at room temperature. The reaction mixture was stirred for 6 h at 80 °C under nitrogen atmosphere. The resulting mixture was diluted with water (20 mL). The resulting mixture was extracted with CH 2 Cl 2 (3 x 20 mL). The combined organic layers were washed with brine (3 x 15 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure to afford 4-bromo-1-(tert- butyl)-5-fluoro-1H-pyrazole (1 g, 62%) as a light-yellow oil. MS ESI calculated for C 7 H 10 BrFN 2 [M + H] + , 221.00, 223.00, found 221.00, 223.00; 1 H NMR (400 MHz, Chloroform-d) δ 7.30 (d, J = 2.4 Hz, 1H), 1.59 (s, 9H). [00400] Step 2: To a stirred mixture of 4-{6-chloroimidazo[1,2-a]pyridin-8-yl}morpholine (400 mg, 1.68 mmol) and 4-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)anil ine (431.54 mg, 1.85 mmol), K3PO4 (714.43 mg, 3.37 mmol) in THF (5 mL) and water (0.5 mL) was added 2 nd Generation XPhos Precatalyst (132.41 mg, 0.17 mmol) in portions at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (4/3/1). The fractions containing the desired product were combined and concentrated to afford 4-methyl-3-[8-(morpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]aniline (327 mg, 63%) as a yellow solid. MS ESI calculated for C18H20N4O [M + H] + , 309.16, found 309.10; 1 H NMR (400 MHz, Chloroform-d) δ 7.71 (d, J = 1.4 Hz, 1H), 7.60 (d, J = 1.3 Hz, 1H), 7.53 (d, J = 1.3 Hz, 1H), 7.07 (d, J = 8.1 Hz, 1H), 6.66 (dd, J = 8.0, 2.6 Hz, 1H), 6.62 (d, J = 2.5 Hz, 1H), 6.41 (s, 1H), 4.02-3.95 (m, 4H), 3.57-3.51 (m, 4H), 2.17 (s, 3H). . [00401] Step 3: To a stirred mixture of 4-methyl-3-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6- yl]aniline (80 mg, 0.26 mmol), Pd(dppf)Cl2·CH2Cl2 (42.43 mg, 0.05 mmol) and Co2(CO)8 (26.62 mg, 0.08 mmol) in dioxane (1.5 mL) was added TEA (156.95 mg, 1.55 mmol) and 4- bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (114.92 mg, 0.52 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was allowed to cool down to room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with CH2Cl2/MeOH (10/1) to afford the crude product. The crude product was purified by Prep- HPLC with the following conditions: Column: YMC-Actus Triart C18 ExRS, 30 x 150 mm, 5 μm; Mobile Phase A: Water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 40% B to 50% B in 10 min, 50% B; Wavelength: 254 nm; RT1: 12.3 min. The fractions were combined and concentrated to afford the title compound (12.2 mg, 9%) as an off-white solid. MS ESI calculated for C 26 H 29 FN 6 O 2 [M + H] + , 477.23, found 477.20; 1 H NMR (400 MHz, Chloroform-d) δ 7.85-7.79 (m, 2H), 7.69-7.59 (m, 3H), 7.54-7.44 (m, 2H), 7.31-7.28 (m, 1H), 6.52 (s, 1H), 4.03 (t, J = 4.6 Hz, 4H), 3.54 (t, J = 4.7 Hz, 4H), 2.29 (s, 3H), 1.67 (d, J = 1.4 Hz, 9H). [00402] Example 74 and 75: N-(2-Fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridin-6- yl)phenyl)- 3-(1,1,1-trifluoro-2-methylpropan-2-yl)pyrrolidine-1-carboxa mide [00403] Step 1: To a stirred solution of maleic anhydride (10 g, 101.98 mmol) in Acetic acid (50 mL) was added (4-methoxyphenyl)methanamine (13.32 mL, 101.98 mmol) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 6 h at 120 °C under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (4/1). The fractions containing the desired product were combined and concentrated to afford 1-[(4- methoxyphenyl)methyl]pyrrole-2,5-dione (8 g, 36%) as a white solid; 1 H NMR (400 MHz, CDCl 3 ) δ 7.33-7.26 (m, 2H), 6.87-6.79 (m, 2H), 6.68-6.62 (m, 2H), 4.61 (s, 2H), 3.78 (s, 3H). [00404] Step 2: To a stirred solution of 1-[(4-methoxyphenyl)methyl]pyrrole-2,5-dione (8 g, 36.83 mmol), 3,3,3-trifluoro-2,2-dimethylpropanoic acid (14.37 g, 92.07 mmol) and ammonium persulfate (21.01 g, 92.07 mmol) in dimethyl sulfoxide (160 mL) and water (80 mL) was added potassium phosphate tribasic (19.54 g, 92.07 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at 70 °C under nitrogen atmosphere. The resulting mixture was quenched with sat. sodium bicarbonate (aq.) at room temperature. The resulting mixture was diluted with water (500 mL) and extracted with EA (2 x 500 mL). The combined organic layers were washed with brine (2 x 200 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (9/1). The fractions containing the desired product were combined and concentrated to afford 1-[(4-methoxyphenyl)methyl]-3- (1,1,1-trifluoro-2-methylpropan-2-yl)pyrrole-2,5-dione (3.4 g, 28%) as a yellow oil. 1 H NMR (400 MHz, CDCl 3 ) δ 7.31-7.27 (m, 2H), 6.87-6.82 (m, 2H), 6.48-6.46 (m, 1H), 4.58 (s, 2H), 3.78 (s, 3H), 1.57-1.51 (s, 6H). [00405] Step 3: To a stirred solution of LiAlH 4 (3.22 g, 84.82 mmol) in tetrahydrofuran (35 mL) was added 1-[(4-methoxyphenyl)methyl]-3-(1,1,1-trifluoro-2-methylpropa n-2-yl)pyrrole-2,5-dione (3.47 g, 10.60 mmol) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 16 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched by the addition of water (3.2 mL), sodium hydroxide (15%) (3.2 mL) and water (9.6 mL) at 0 °C. The resulting mixture was filtered, the filter cake was washed with EA (3 x 300 mL). The filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (2/1). The fractions containing the desired product were combined and concentrated to afford 1-[(4-methoxyphenyl)methyl]-3-(1,1,1- trifluoro-2-methylpropan-2-yl)pyrrolidine (1.6 g, 50%) as a yellow oil. MS ESI calculated for C 16 H 22 F 3 NO [M + H] + , 302.17, found 302.10; 1 H NMR (400 MHz, CDCl 3 ) δ 7.26 (d, J = 8.4 Hz, 2H), 6.86 (d, J = 8.6 Hz, 2H), 3.80 (s, 3H), 3.71-3.48 (m, 2H), 2.76 (d, J = 9.2 Hz, 2H), 2.63-2.26 (m, 2H), 1.89-1.86 (m, 1H), 1.78-1.45 (m, 2H), 1.07 (d, J = 9.4 Hz, 6H). [00406] Step 4: To a stirred solution of 1-[(4-methoxyphenyl)methyl]-3-(1,1,1-trifluoro-2-methylpropa n- 2-yl)pyrrolidine (2 g, 6.64 mmol) in EA (2 mL) was added Pd/C (2.00 g, 18.78 mmol, 60%) at room temperature under hydrogen atmosphere. The reaction mixture was stirred for 48 h at room temperature under hydrogen atmosphere. To the above mixture was added HCl (g) in EA (10 mL, 40.000 mmol) dropwise at room temperature. The resulting mixture was stirred for additional 5 min at room temperature. The resulting mixture was filtered, the filter cake was washed with EA (2 x 20 mL). The filtrate was concentrated under reduced pressure to afford 3- (1,1,1-trifluoro-2-methylpropan-2-yl)pyrrolidine·HCl salt (1.5 g, crude) as a yellow oil. MS ESI calculated for C 8 H 14 F 3 N [M + H ] + , 182.11, found 182.10. [00407] Step 5: To a stirred solution of 3-(1,1,1-trifluoro-2-methylpropan-2-yl)pyrrolidine·HCl salt(250.09 mg, 1.15 mmol) and triphosgene (90.92 mg, 0.31 mmol) in Tetrahydrofuran (2.5 mL) was added N,N-Diisopropylethylamine (0.53 mL, 3.06 mmol) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 15 min at room temperature. To the above mixture was added 2-fluoro-4-methyl-5-(8-morpholinoimidazo[1,2- a]pyridin-6-yl)aniline (251.09 mg, 0.77 mmol) at room temperature. The reaction mixture was stirred for additional 1 h at room temperature. The resulting mixture was diluted with water (20 mL) and extracted with EA (3 x 20 mL). The combined organic layers were washed with brine (1 x 20 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with EA to afford the crude product. The crude product was purified by Prep-HPLC with the following conditions Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: Water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 49% B to 57% B in 8 min, 57% B; Wavelength: 220 nm. The fractions containing the desired product were combined and concentrated to afford N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)-3-(1,1,1-triflu oro-2-methylpropan-2- yl)pyrrolidine-1-carboxamide (0.19 g, 46%) as a yellow oil. MS ESI calculated for C 27 H 31 F 4 N 5 O 2 [M + H] + , 534.24, found 534.15. [00408] Step 6: The N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridin-6- yl)phenyl)-3-(1,1,1- trifluoro-2-methylpropan-2-yl)pyrrolidine-1-carboxamide (0.19 g) was purified by Prep-Chiral- HPLC with the following conditions: Column: CHIRAL ART Cellulose-SB, 2 x 25 cm, 5 μm; Mobile Phase A: Hex (0.5% 2 M NH 3 -MeOH)--HPLC, Mobile Phase B: IPA: DCM=1: 1-- HPLC; Flow rate: 20 mL/min; Gradient: 30% B to 30% B in 11 min; Wave Length: 254/220 nm; RT1: 7.70 min; RT2: 8.70 min; Sample Solvent: MeOH: DCM=1: 1--HPLC; Injection Volume: 0.3 mL. [00409] PEAK 1 (EXAMPLE 74: N-(2-Fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridin-6- yl)phenyl)-3-(1,1,1-trifluoro-2-methylpropan-2-yl)pyrrolidin e-1-carboxamide). The fractions (RT 7.7 min) were combined and concentrated to afford the title compound (61.3 mg, 15%) as a white solid of undetermined absolute stereochemistry. MS ESI calculated for C 27 H 31 F 4 N 5 O 2 [M + H] + , 534.24, found 534.20; 1 H NMR (400 MHz, DMSO-d6) δ 8.10 (d, J = 1.6 Hz, 1H), 7.91- 7.86 (m, 2H), 7.50 (d, J = 1.2 Hz, 1H), 7.43 (d, J = 8.2 Hz, 1H), 7.16 (d, J = 11.6 Hz, 1H), 6.33 (d, J = 1.5 Hz, 1H), 3.83-3.77 (m, 4H), 3.60-3.50 (m, 6H), 3.28-3.26 (m, 1H), 3.16-3.13 (m, 1H), 2.47-2.35 (m, 1H), 2.25 (s, 3H), 1.95-1.87 (m, 1H), 1.81-1.73 (m, 1H), 1.12 (d, J = 8.9 Hz, 6H). [00410] PEAK 2 (EXAMPLE 75: N-(2-Fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]pyridin-6- yl)phenyl)-3-(1,1,1-trifluoro-2-methylpropan-2-yl)pyrrolidin e-1-carboxamide). The fractions (RT 8.7 min) were combined and concentrated to afford title compound (61.5 mg, 15%) as a white solid of undetermined absolute stereochemistry. MS ESI calculated for C27H31F4N5O2 [M + H]+, 534.24, found 534.20; 1 H NMR (400 MHz, DMSO-d6) δ 8.10 (d, J = 1.6 Hz, 1H), 7.91- 7.86 (m, 2H), 7.50 (d, J = 1.2 Hz, 1H), 7.43 (d, J = 8.2 Hz, 1H), 7.16 (d, J = 11.6 Hz, 1H), 6.33 (d, J = 1.5 Hz, 1H), 3.83-3.77 (m, 4H), 3.60-3.50 (m, 6H), 3.28-3.26 (m, 1H), 3.16-3.13 (m, 1H), 2.47-2.35 (m, 1H), 2.25 (s, 3H), 1.95-1.87 (m, 1H), 1.81-1.73 (m, 1H), 1.12 (d, J = 8.9 Hz, 6H). [00411] Example 84: 5-(1,1-Difluoroethyl)-N-{2-fluoro-4-methyl-5-[8-(morpholin-4 -yl)imidazo[1,2- a]pyridin-6-yl]phenyl}pyridine-3-carboxamide [00412] Step 1: A solution of 1-(5-bromopyridin-3-yl)ethanone (3 g, 14.99 mmol) in BAST (4.98 g, 22.49 mmol) was stirred for 6 h at 80 °C under nitrogen atmosphere. The resulting mixture was allowed to cool down to room temperature. The resulting mixture was quenched by the addition of sat. NaHCO3 (aq.) (100 mL) and extracted with EA (3 x 100 mL). The combined organic layers were washed with brine (2 x 50 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (2/1). The fractions were combined and concentrated to afford 3-bromo-5-(1,1-difluoroethyl)pyridine (1.11 g, 33%) as a yellow oil. MS ESI calculated for C7H6BrF2N [M+H] + , 221.97, found 222.00. [00413] Step 2: To a solution of 3-bromo-5-(1,1-difluoroethyl)pyridine (1 g, 4.50 mmol) in MeOH (10 mL) was added Pd(dppf)Cl 2 ·CH 2 Cl 2 (366.89 mg, 0.45 mmol) and TEA (1.88 mL, 13.51 mmol). The reaction mixture was stirred for 16 h at 100 °C under carbon monoxide atmosphere (30 psi). The resulting mixture was allowed to cool down to room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (2/1). The fractions containing the desired product were combined and concentrated to afford methyl 5-(1,1-difluoroethyl)pyridine-3-carboxylate (800 mg, 88%) as an off-white oil. MS ESI calculated for C9H9F2NO2 [M+H] + , 202.06, found 202.10; 1H NMR (400 MHz, DMSO-d 6 ) δ 9.30 (d, J=2 Hz, 1H), 8.95 (d, J=2.4 Hz, 1H), 8.45-8.43 (m, 1H), 4.00 (s, 3H), 1.99 (t, J = 18.3 Hz, 3H). [00414] Step 3: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]aniline (162.24 mg, 0.49 mmol) in LiHMDS (1 mL, 1 M in THF) was added methyl 5-(1,1- difluoroethyl)pyridine-3-carboxylate (100 mg, 0.49 mmol) in THF (1 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched by the addition of sat. NH 4 Cl (aq.) (10 mL) and extracted with EtOAc (3 x 20 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by Prep-TLC, eluted with PE/EA/EtOH (4/3/1) to afford the crude product. The crude product was purified by reversed phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in Water (Plus 10 mmol/L NH 4 HCO 3 ), 5% to 95% gradient in 30 min; detector: UV 254 nm. The fractions were combined and concentrated to afford the title compound (132.7 mg, 53%) as a white solid. MS ESI calculated for C26H24F3N5O2 [M+H] + , 496.19, found 496.15; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.52 (s, 1H), 9.23 (d, J = 2.1 Hz, 1H), 9.00 (d, J = 2.1 Hz, 1H), 8.49 (s, 1H), 8.17 (s, 1H), 7.90 (s, 1H), 7.58 (d, J = 7.8 Hz, 1H), 7.52 (d, J = 2.4 Hz, 1H), 7.33 (d, J = 11.4 Hz, 1H), 6.39 (s, 1H), 3.80 (t, J = 4.6 Hz, 4H), 3.55 (t, J = 4.6 Hz, 4H), 2.31 (s, 3H), 2.09 (t, J = 19.2 Hz, 3H). [00415] Example 86: 1-tert-Butyl-N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imida zo[1,2-a]pyridin-6- yl]phenyl}-1,2,3-triazole-4-carboxamide [00416] Step 1: To a stirred solution of 1-tert-butyl-1,2,3-triazole-4-carboxylic acid (51.84 mg, 0.306 mmol) in Pyridine (1 mL) and propylphosphonic anhydride solution (1 mL, 50% in EA) was added 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6-yl]aniline (100 mg, 0.306 mmol). The reaction mixture was stirred for 16 h at room temperature under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. The residue was purified by reverse phase flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 40 g; mobile phase A: Water (Plus 10 mmol/L NH4HCO3); mobile phase B: ACN; Gradient: 45% to 55% B in 20 min; Flow rate: 30 mL/min; Detector: 254 nm. The fractions were combined and concentrated to afford the title compound (119.9 mg, 81%) as an off-white solid. MS ESI calculated for C25H28FN7O2 [M + H] + , 478.23, found 478.25; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.02 (s, 1H), 8.85 (s, 1H), 8.16 (d, J = 1.5 Hz, 1H), 7.90 (d, J = 1.4 Hz, 1H), 7.64 (d, J = 7.8 Hz, 1H), 7.51 (d, J = 1.1 Hz, 1H), 7.29 (d, J = 11.5 Hz, 1H), 6.37 (d, J = 1.7 Hz, 1H), 3.80 (t, J = 4.7 Hz, 4H), 3.55 (t, J = 4.8 Hz, 4H), 2.30 (s, 3H), 1.67 (d, J = 1.1 Hz, 9H). [00417] Example 87-90: 3-(1,1-difluoropropan-2-yl)-N-(2-fluoro-4-methyl-5-(8-morpho linoimidazo[1,2- a]pyridin-6-yl)phenyl)pyrrolidine-1-carboxamide [00418] Step 1: To a stirred solution of tert-butyl 3-(2-methoxy-2-oxoethyl)pyrrolidine-1-carboxylate (2 g, 8.22 mmol) in THF (80 mL) was added 1 M LiHMDS in THF (20.55 mL, 20.55 mmol) dropwise at -10 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at - 10 °C. To the above mixture was added CH3I (1.28 mL, 20.55 mmol) at -10 °C. The reaction mixture was warmed to room temperature and stirred for 4 h under nitrogen atmosphere. The resulting mixture was quenched with water at room temperature and extracted with EtOAc (3 x 80 mL). The combined organic layers were washed with brine (2 x 60 mL), dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (4/1). The fractions containing the desired product were combined and concentrated to afford tert-butyl 3-(1-methoxy-1- oxopropan-2-yl)pyrrolidine-1-carboxylate (0.7 g, 33%) as a light yellow oil. MS ESI calculated for C 13 H 23 NO 4 [M + H] + , 258.33, found, 258.16. [00419] Step 2: To a stirred mixture of LiAlH 4 (786 mg, 20.72 mmol) in THF (30 mL) was added tert- butyl 3-(1-methoxy-1-oxopropan-2-yl)pyrrolidine-1-carboxylate (2.6 g, 10.41 mmol) in THF (6 mL) at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was quenched by 15% sodium hydroxide solution (0.6 mL). The resulting mixture was filtered, the filter cake was washed with EtOAc (5 mL). The filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford tert-butyl 3-(1-hydroxypropan-2-yl)pyrrolidine-1- carboxylate (2 g, 83%) as a colorless oil. MS ESI calculated for C 12 H 23 NO 3 [M + H] + , 230.32, found 230.15. [00420] Step 3: To a stirred solution of tert-butyl 3-(1-hydroxypropan-2-yl)pyrrolidine-1-carboxylate (2 g, 8.72 mmol) in DCM (40 mL) was added Dess-Martin (7.4 g, 17.44 mmol) at room temperature. The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (3/1). The fractions containing the desired product were combined and concentrated to afford tert-butyl 3-(1-oxopropan-2-yl)pyrrolidine-1-carboxylate (1.4 g, 70%) as a colorless oil. MS ESI calculated for C12H21NO3 [M + H] + , 228.30, found 228.30. [00421] Step 4: To a stirred solution of tert-butyl 3-(1-oxopropan-2-yl)pyrrolidine-1-carboxylate (1.4 g, 6.15 mmol) in DCM (20 mL) was added DAST (3971 mg, 24.63 mmol) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was quenched with NaHCO 3 (aq.) at 0 °C and extracted with CH 2 Cl 2 (3 x 40 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (4/1). The fractions containing the desired product were combined and concentrated to afford tert-butyl 3-(1,1-difluoropropan-2-yl)pyrrolidine-1- carboxylate (1.1 g, 71%) as a yellow oil. MS ESI calculated for C12H21F2NO2 [M + H] + , 250.30, found 250.15. [00422] Step 5: To a stirred mixture of tert-butyl 3-(1,1-difluoropropan-2-yl)pyrrolidine-1-carboxylate (1.1 g, 4.41 mmol) in DCM (10 mL) was added HCl (gas) in EA (0.48 g, 13.23 mmol) at room temperature. The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was concentrated under reduced pressure to afford 3-(1,1-difluoropropan-2-yl) pyrrolidine·HCl salt (700 mg, crude) as a yellow solid. MS ESI calculated for C 7 H 13 F 2 N [M + H] + , 150.10, found 150.15 [00423] Step 6: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]aniline (300 mg, 0.91 mmol) in THF (22 mL) were added triphosgene (109 mg, 0.36 mmol) and DIEA (356.41 mg, 2.76 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 30 min at room temperature under nitrogen atmosphere. To the above mixture was added 3-(1,1-difluoropropan-2-yl) pyrrolidine·HCl salt (204.29 mg, 1.10 mmol) at room temperature. The reaction mixture was stirred for additional 2 h at room temperature. The resulting mixture was quenched with MeOH (5 mL) and concentrated under reduced pressure. The residue was purified by reversed phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in Water (Plus 10 mmol/L NH 4 HCO 3 ), 5% to 95% gradient in 30 min; detector: UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 3-(1,1-difluoropropan-2-yl)-N-{2-fluoro-4-methyl-5-[8- (morpholin-4-yl)imidazo[1,2-a]pyridin-6-yl]phenyl}pyrrolidin e-1-carboxamide (170 mg, 36%) as a yellow solid. The solid was further purified by Prep-Chiral-HPLC with the following conditions: Column: CHIRALPAK IE, 2 x 25 cm, 5 μm; Mobile Phase A: Hex (0.5% 2 M NH3- MeOH)--HPLC, Mobile Phase B: IPA: DCM=1: 1--HPLC; Flow rate: 20 mL/min; Gradient: 40% B to 40% B in 30 min; Wave Length: 254/220 nm; RT1: 20.27 min; RT2: 25.06 min; Sample Solvent: MeOH: DCM=1: 1--HPLC; Injection Volume: 0.3 mL. [00424] PEAK 1 (EXAMPLE 87: 3-(1,1-difluoropropan-2-yl)-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)pyrrolidine-1-ca rboxamide): The fractions (RT 20.27 min) were combined and concentrated to afford the title compound (16 mg, 9%) of undetermined absolute stereochemistry. MS ESI calculated for C26H30F3N5O2 [M + H] + , 502.55, found 502.25; 1 H NMR (400 MHz, DMSO-d6) δ 8.11 (d, J = 1.4 Hz, 1H), 7.91-7.85 (m, 2H), 7.50 (d, J = 1.2 Hz, 1H), 7.43 (d, J = 8.2 Hz, 1H), 7.17 (d, J = 11.6 Hz, 1H), 6.33 (d, J = 1.5 Hz, 1H), 6.06-5.98 (m, 1H), 3.80 (t, J = 4.7 Hz, 4H), 3.69-3.48 (m, 6H), 3.28-3.26 (m, 1H), 3.01 (t, J = 10.0 Hz, 1H), 2.25 (s, 3H), 2.20-1.86 (m, 3H), 1.71-1.61 (m, 1H), 0.96 (d, J = 6.9 Hz, 3H). [00425] PEAK 2 (EXAMPLE 88: 3-(1,1-difluoropropan-2-yl)-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)pyrrolidine-1-ca rboxamide): The fractions (RT 25.06 min) were combined and concentrated to afford the title compound (17.2 mg, 10%) of undetermined absolute stereochemistry. MS ESI calculated for C 26 H 30 F 3 N 5 O 2 [M + H] + , 502.55, found 502.25; 1 H NMR (400 MHz, DMSO-d 6 ) δ 8.10 (d, J = 1.4 Hz, 1H), 7.91-7.84 (m, 2H), 7.50 (d, J = 1.1 Hz, 1H), 7.44 (d, J = 8.2 Hz, 1H), 7.17 (d, J = 11.6 Hz, 1H), 6.33 (s, 1H), 6.25- 5.84 (m, 1H), 3.80 (t, J = 4.6 Hz, 4H), 3.70-3.51 (m, 6H), 3.26 (dd, J = 11.6, 8.1 Hz, 1H), 3.01 (t, J = 10.1 Hz, 1H), 2.25 (s, 3H), 2.17-2.15 (m, 1H), 2.12-1.88 (m, 2H), 1.71-1.62 (m, 1H), 0.96 (d, J = 6.9 Hz, 3H). [00426] The solid was further purified by Prep-Chiral-HPLC with the following conditions: Column: CHIRAL ART Cellulose-SC, 2 x 25 cm, 5 μm; Mobile Phase A: Hex (0.5% 2 M NH 3 -MeOH)-- HPLC, Mobile Phase B: MeOH: DCM=1: 1--HPLC; Flow rate: 20 mL/min; Gradient: 30% B to 30% B in 17 min; Wave Length: 254/220 nm; RT1: 14.45 min; RT2: 16.30 min; Sample Solvent: MeOH: DCM=1: 1--HPLC; Injection Volume: 0.5 mL. [00427] PEAK 3 (EXAMPLE 89: 3-(1,1-difluoropropan-2-yl)-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)pyrrolidine-1-ca rboxamide): The fractions (14.45 min) were combined and concentrated to afford the title compound (14.6 mg, 8%) of undetermined absolute stereochemistry. MS ESI calculated for C26H30F3N5O2 [M + H] + , 502.55, found 502.25; 1 H NMR (400 MHz, DMSO-d 6 ) δ 8.11 (d, J = 1.4 Hz, 1H), 7.91-7.82 (m, 2H), 7.50 (d, J = 1.2 Hz, 1H), 7.45 (d, J = 8.2 Hz, 1H), 7.16 (d, J = 11.6 Hz, 1H), 6.33 (d, J = 1.5 Hz, 1H), 5.99-5.92 (m, 1H), 3.80 (t, J = 4.6 Hz, 4H), 3.67 (t, J = 8.9 Hz, 1H), 3.53 (dd, J = 10.1, 6.2 Hz, 5H), 3.28-3.19 (m, 1H), 3.05-3.03 (m, 1H), 2.25 (s, 3H), 2.20-1.86 (m, 3H), 1.60-1.52 (m, 1H), 0.99 (d, J = 6.9 Hz, 3H). [00428] PEAK 4 (EXAMPLE 90: 3-(1,1-difluoropropan-2-yl)-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)pyrrolidine-1-ca rboxamide): The fractions (RT 16.30 min) were combined and concentrated to afford the title compound (11.8 mg, 6%) as a white solid of undetermined absolute stereochemistry. MS ESI calculated for C 26 H 30 F 3 N 5 O 2 [M + H] + , 502.55, found 502.25; 1 H NMR (400 MHz, DMSO-d6) δ 8.10 (d, J = 1.4 Hz, 1H), 7.88 (d, J = 1.2 Hz, 1H), 7.83 (s, 1H), 7.50 (d, J = 1.2 Hz, 1H), 7.45 (d, J = 8.2 Hz, 1H), 7.16 (d, J = 11.6 Hz, 1H), 6.33 (d, J = 1.5 Hz, 1H), 6.25-5.84 (m, 1H), 3.83-3.76 (m, 4H), 3.68-3.66 (m, 1H), 3.56-3.52 (m, 5H), 3.25-3.23 (m, 1H), 3.05-3.03 (m, 1H), 2.24 (s, 3H), 2.14-2.12 (m, 1H), 2.09- 1.82 (m, 2H), 1.71-1.62 (m, 1H), 0.99 (d, J = 6.9 Hz, 3H). [00429] Example 91 and 92: 3-(tert-Butyl)-3-fluoro-N-(2-fluoro-4-methyl-5-(8-morpholino imidazo[1,2- a]pyridin-6-yl)phenyl)pyrrolidine-1-carboxamide [00430] STEP 1: To a stirred solution of tert-butyl 3-oxopyrrolidine-1-carboxylate (3 g, 16.20 mmol) in THF (30 mL) was added tert-butyllithium (14.33 mL, 18.63 mmol, 1.3 M in THF) dropwise at - 78 °C under nitrogen atmosphere. The reaction mixture was stirred for 2 h at -78 °C under nitrogen atmosphere. The resulting mixture was quenched by the addition of sat. NH 4 Cl (aq.) (300 mL) at room temperature. The resulting mixture was extracted with EtOAc (3 x 300 mL). The combined organic layers were washed with brine (2 x 200 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (2/1). The fractions containing the desired product were combined and concentrated to afford tert-butyl 3-tert-butyl-3- hydroxypyrrolidine-1-carboxylate (1.3 g, 16%) as a colorless oil. MS ESI calculated for C 13 H 25 NO 3 [M + H ] + , 24418, found 244.15; 1 H NMR (400 MHz, Chloroform-d) δ 3.81-3.77 (m, 2H), 3.59-3.46 (m, 2H), 2.07-1.98 (m, 1H), 1.75-1.64 (m, 1H), 1.49 (s, 9H), 1.03 (s, 9H). [00431] Step 2: To a stirred solution of tert-butyl 3-tert-butyl-3-hydroxypyrrolidine-1-carboxylate (1 g, 4.11 mmol) in DCM (40 mL) was added DAST (3.31 g, 20.55 mmol) in DCM (40 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched by the addition of sat. NaHCO3 (aq.) (200 mL) at 0 °C. The resulting mixture was extracted with EtOAc (3 x 300 mL). The combined organic layers were washed with brine (2 x 200 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (2/1). The fractions containing the desired product were combined and concentrated to afford tert-butyl 3-tert-butyl-3- fluoropyrrolidine-1-carboxylate (560 mg, crude) as a colorless oil. MS ESI calculated for C13H24FNO2 [M + H] + , 246.18, found 246.15. [00432] Step 3: To a stirred solution of tert-butyl 3-tert-butyl-3-fluoropyrrolidine-1-carboxylate (560 mg, 2.283 mmol) in DCM (6 mL) was added HCl (gas) (6 mL, 2 M in EtOAc). The reaction mixture was stirred for 16 at room temperature under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure to afford 3-tert-butyl-3-fluoropyrrolidine ·HCl salt (530 mg, crude) as an off-white solid. MS ESI calculated for C 8 H 16 FN [M + H] + , 182.10, found 182.25. [00433] Step 4: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (300 mg, 0.92 mmol) and DIEA (594 mg, 4.60 mmol) in THF (18 mL) was added Triphosgene (109 mg, 0.37 mmol) in THF (2 mL) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 30 min at room temperature under nitrogen atmosphere. To the above mixture was added 3-tert-butyl-3-fluoropyrrolidine·HCl salt (250 mg, 1.38 mmol) in THF (2 mL) dropwise at room temperature. The resulting mixture was stirred for additional 2 h at room temperature. The reaction mixture was quenched by the addition of MeOH (10 mL) and concentrated under reduced pressure. The residue was purified by Prep- HPLC to afford 3-tert-butyl-3-fluoro-N-{2-fluoro-4-methyl-5-[8-(morpholin-4 -yl)imidazo[1,2- a]pyridin-6-yl]phenyl}pyrrolidine-1-carboxamide (40 mg, 6%) as an off-white solid. MS ESI calculated for C27H33F2N5O2 [M + H] + , 498.26 , found 498.25. [00434] Step 5: The 3-tert-Butyl-3-fluoro-N-{2-fluoro-4-methyl-5-[8-(morpholin-4 -yl)imidazo[1,2- a]pyridin-6-yl]phenyl}pyrrolidine-1-carboxamide (40 mg, 0.08 mmol) was purified by Chiral- Prep-HPLC with the following conditions: Column: CHIRAL ART Cellulose-SB, 2 x 25 cm, 5 μm; Mobile Phase A: Hex (0.5% 2 M NH3-MeOH)--HPLC, Mobile Phase B: IPA: DCM=1: 1-- HPLC; Flow rate: 20 mL/min; Gradient: 40% B to 40% B in 7 min; Wave Length: 254/220 nm; RT1: 4.42 min; RT2: 6.49 min; Sample Solvent: MeOH: DCM=1: 1--HPLC; Injection Volume: 0.8 mL. [00435] PEAK 1 (EXAMPLE 91: 3-(tert-Butyl)-3-fluoro-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)pyrrolidine-1-ca rboxamide): The fractions (RT 4.42 min) were combined and concentrated to afford the title compound (12.3 mg, 27%) as an off-white solid of undetermined absolute stereochemistry. MS ESI calculated for C27H33F2N5O2 [M + H] + , 498.26, found 498.20; 1 H NMR (400 MHz, Chloroform-d) δ 8.12 (d, J = 8.0 Hz, 1H), 7.77 (d, J = 1.6 Hz, 1H), 7.63 (s, 1H), 7.54 (d, J = 0.8 Hz, 1H), 7.02 (d, J = 11.6 Hz, 1H), 6.42- 6.36 (m, 2H), 4.02-4.00 (m, 4H), 3.75-3.60 (m, 4H), 3.56-3.52 (m, 4H), 2.25-2.12 (m, 5H), 1.09 (s, 9H). [00436] PEAK 2 (EXAMPLE 92: 3-(tert-Butyl)-3-fluoro-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)pyrrolidine-1-ca rboxamide): The fractions (RT 6.49 min) were combined and concentrated to afford the title compound (11.5 mg, 29%) as an off-white solid of undetermined absolute stereochemistry. MS ESI calculated for C27H33F2N5O2 [M + H] + , 498.26, found 498.25; 1 H NMR (400 MHz, Chloroform-d) δ 8.13 (d, J = 8.4 Hz, 1H), 7.77 (d, J = 1.2 Hz, 1H), 7.64 (s, 1H), 7.54 (d, J = 1.2 Hz, 1H), 7.02 (d, J = 11.6 Hz, 1H), 6.45 (s, 1H), 6.37 (d, J = 2.4 Hz, 1H), 4.03-4.00 (m, 4H), 3.72-3.61 (m, 4H), 3.56-3.53 (m, 4H), 2.28- 2.12 (m, 5H), 1.09 (s, 9H). [00437] Example 95: 2-Tert-butyl-5-fluoro-N-{4-methyl-3-[8-(morpholin-4-yl)imida zo[1,2-a]pyridin-6- yl]phenyl}pyridine-4-carboxamide [00438] STEP 1: To a stirred mixture of methyl 3-fluoropyridine-4-carboxylate (4 g, 25.79 mmol) in DCM (50 mL) was added m-CPBA (6.67 g, 38.68 mmol). The reaction mixture was stirred for 16 h at room temperature. The resulting mixture was quenched with saturated aqueous NaHCO 3 (200 mL) and extracted with EtOAc (3 x 200 mL). The combined organic layers were washed with saturated brine (100 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EtOAc/EtOH (4/3/1). The fractions containing the desired product were combined and concentrated to afford 3-fluoro-4-(methoxycarbonyl)pyridin-1-ium- 1-olate (4.3 g, 97%) as an off-white solid. MS ESI calculated for C7H6FNO3 [M + H] + , 172.03, found 172.15; 1 H NMR (400 MHz, CDCl3) δ 8.18-8.16 (m, 1H), 8.14-8.08 (m, 1H), 7.87-7.85 (m, 1H), 3.97 (s, 3H). [00439] Step 2: To a stirred mixture of 3-fluoro-4-(methoxycarbonyl)pyridin-1-ium-1-olate (1 g, 5.84 mmol) [Ir(dtbbpy)(ppy)2][PF6] (0.05 g, 0.06 mmol) in ACN (12 mL) was added 2,2- dimethylpropanoyl chloride (1.55 g, 12.86 mmol). The reaction mixture was stirred for 15 min at room temperature under nitrogen atmosphere. The reaction mixture was stirred and irradiated with a blue LED lamp (7 cm away, with cooling fan to keep the reaction temperature at 25 °C) for 16 h. The resulting mixture was quenched with saturated aqueous NaHCO 3 (100 mL) and extracted with DCM (3 x 100 mL). The combined organic layers were washed with brine (100 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EtOAc/EtOH (1/1). The fractions containing the desired product were combined and concentrated to afford the mixture of methyl 2-tert-butyl-5-fluoropyridine-4-carboxylate and methyl 2-tert-butyl-3-fluoropyridine-4-carboxylate as a light-yellow oil. C11H14FNO2 [M + H] + , 212.03, found 212.15. [00440] Step 3: To a stirred mixture of mixture of methyl 2-tert-butyl-5-fluoropyridine-4-carboxylate (300 mg, 1.42 mmol) and methyl 2-tert-butyl-3-fluoropyridine-4-carboxylate (mixture) in MeOH (1 mL) and THF (1 mL) was added LiOH·H 2 O (178.78 mg, 4.26 mmol) in H 2 O (1 mL). The reaction mixture was stirred for 2 h at room temperature. The resulting mixture was concentrated under reduced pressure. The resulting mixture was acidified to pH 4 with HCl (aq.). The resulting mixture was extracted with EtOAc (3 x 30 mL). The combined organic layers were washed with brine (20 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure to afford the mixture of 2-tert-butyl-5- fluoropyridine-4-carboxylic acid and 2-tert-butyl-3-fluoropyridine-4-carboxylic acid (160 mg, crude) as a light-yellow solid. MS ESI calculated for C 10 H 12 FNO 2 [M + H] + , 198.09, found 198.15. [00441] Step 4: To a stirred solution of 2-tert-butyl-5-fluoropyridine-4-carboxylic acid (41.57 mg, 0.211 mmol) in T3P (0.5 mL) was stirred for 15 min at room temperature under nitrogen atmosphere. To the above mixture was added the solution of 4-methyl-3-[8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]aniline (50 mg, 0.162 mmol) in Pyridine (0.5 mL) at room temperature. The reaction mixture was stirred for 2 h at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1) to afford the crude product. The crude product was purified by Prep-Chiral- SFC with the following conditions: Column: DAICEL DC Pak P4VP, 3 x 25 cm, 5 μm; Mobile Phase A: CO2, Mobile Phase B: MeOH (0.1% 2 M NH3-MEOH); Flow rate: 75 mL/min; Gradient: isocratic 25% B; Column Temperature: 35 °C; Back Pressure: 100 bar; Wave Length: 254 nm; RT1: 4.58 min; RT2: 5.18 min; Sample Solvent: MeOH--HPLC; Injection Volume: 2 mL. PEAK 2 (5.18 min): The fractions were combined and concentrated to afford the title compound (7.4 mg, 9%) as a white solid. MS ESI calculated for C 28 H 30 FN 5 O 2 [M + H] + , 488.24, found 488.25; NMR (400 MHz, DMSO-d 6 ) δ 10.68 (s, 1H), 8.65 (s, 1H), 8.16 (d, J = 1.4 Hz, 1H), 7.91 (d, J = 1.2 Hz, 1H), 7.70-7.60 (m, 3H), 7.51 (d, J = 1.2 Hz, 1H), 7.32 (d, J = 8.3 Hz, 1H), 6.37 (d, J = 1.5 Hz, 1H), 3.81 (t, J = 4.6 Hz, 4H), 3.55 (t, J = 4.6 Hz, 4H), 2.27 (s, 3H), 1.34 (s, 9H). [00442] Example 98: 1-(tert-butyl)-N-(4-chloro-2-fluoro-5-(8-morpholinoimidazo[1 ,2-a]pyridin-6- yl)phenyl)-5-fluoro-1H-pyrazole-4-carboxamide [00443] Step 1: To a stirred solution of 4-{6-chloroimidazo[1,2-a]pyridin-8-yl}morpholine (3 g, 12.62 mmol), bis(pinacolato)diboron (4.81 g, 18.93 mmol) and KOAc (3.72 g, 37.86 mmol) in dioxane (30 mL) was added 2 nd Generation XPhos Precatalyst (0.99 g, 1.26 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 100 °C. The resulting mixture was filtered, the filter cake was washed with EtOAc (3 x 100 mL). The filtrate was concentrated under reduced pressureto afford 4-[6-(4,4,5,5-tetramethyl- 1,3,2-dioxaborolan-2-yl)imidazo[1,2-a]pyridin-8-yl]morpholin e (4 g, crude) as a black oil. MS ESI calculated for C 17 H 24 BN 3 O 3 [M+H] + , 330.19, found 329.85. [00444] Step 2: To a stirred solution of 5-bromo-4-chloro-2-fluoroaniline (300 mg, 1.33 mmol), Pd(PPh3)2Cl2 (93.81 mg, 0.13 mmol) and Na2CO3 (424.97 mg, 4.01 mmol) in dioxane (3 mL) and H 2 O (0.6 mL) was added 4-[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1, 2- a]pyridin-8-yl]morpholine (1.32 g, 2.00 mmol, 50%) in portions at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 1 h at 80 °C. The resulting mixture was filtered, the filter cake was washed with EtOAc (3 x 100 mL). The filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (8/3/1). The fractions desired product were combined and concentrated to afford 4-chloro-2-fluoro-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]aniline (328 mg, 70%) as a yellow solid. MS ESI calculated for C17H16ClFN4O [M+H] + , 347.10, 349.10, found 347.10, 349.10; 1 H NMR (400 MHz, Chloroform-d) δ 7.82 (d, J = 1.5 Hz, 1H), 7.62 (d, J = 1.3 Hz, 1H), 7.56 (d, J = 1.3 Hz, 1H), 7.17 (d, J = 10.6 Hz, 1H), 6.81 (d, J = 9.3 Hz, 1H), 6.47 (d, J = 1.5 Hz, 1H), 4.05-3.97 (m, 4H), 3.63-3.50 (m, 4H). [00445] Step 3: To a stirred mixture of 4-chloro-2-fluoro-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]aniline (80 mg, 0.23 mmol) and bis(lambda2-cobalt(2+)) octakis(methanidylidyneoxidanium) (23.59 mg, 0.07 mmol) in dioxane (1 mL) were added TEA (69.69 mg, 0.69 mmol) and 4- bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (101.66 mg, 0.46 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue mixture was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in Water (Plus 10 mmol/L NH4HCO3), 10% to 50% gradient in 10 min; detector, UV 254 nm. The fractions containing the desired product was combined and concentrated to afford crude product. The crude product (35 mg) was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 41% B to 51% B in 10 min, 51% B; Wavelength: 220/254 nm; RT1: 7.88- 8.78 min. The fractions were combined and concentrated to afford the title compound (16.8 mg, 8%) as an off-white solid. MS ESI calculated for C25H25ClF2N6O2 [M + H] + , 515.17, 517.17, found 515.20, 517.20; 1 H NMR (400 MHz, Chloroform-d) δ 8.58 (d, J = 8.4 Hz, 1H), 7.90 (d, J = 1.4 Hz, 1H), 7.85 (d, J = 2.6 Hz, 1H), 7.72 (s, 1H), 7.64 (s, 1H), 7.58 (d, J = 1.3 Hz, 1H), 7.34 (d, J = 10.5 Hz, 1H), 6.54 (s, 1H), 4.05-3.98 (m, 4H), 3.59 (t, J = 4.7 Hz, 4H), 1.68 (s, 9H). [00446] Example 99: (3S)-N-{2,4-difluoro-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyri din-6-yl]phenyl}-3- (2,2,2-trifluoroethyl)pyrrolidine-1-carboxamide
[00447] Step 1: To a stirred mixture of 5-bromo-2,4-difluoroaniline (2 g, 9.62 mmol), bis(pinacolato)diboron (2.93 g, 11.54 mmol) and Potassium Acetate (2.83 g, 28.85 mmol) in dioxane (20 mL) was added 1,1'-Bis(diphenylphosphino)ferrocene-palladium (II)dichloride dichloromethane complex (0.39 g, 0.48 mmol) in portions at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for additional 16 h at 100 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (3/1). The fractions containing the desired product were combined and concentrated to afford 2,4-difluoro-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl) aniline (1.4 g, 57%) as a light-yellow oil. MS ESI calculated for C 12 H 16 BF 2 NO 2 [M + H] + , 256.12, found 256.15. [00448] Step 2: To a stirred mixture of 2,4-difluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2- yl)aniline (800 mg, 3.14 mmol), 4-{6-chloroimidazo[1,2-a]pyridin-8-yl}morpholine (0.75 g, 3.14 mmol) and Potassium phosphate tribasic (1.33 g, 6.27 mmol) in Tetrahydrofuran (8 mL) and water (0.8 mL) was added 2nd Generation XPhos Pd (0.25 g, 0.31 mmol) in portions at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH) (1/3/1). The fractions containing the desired product were combined and concentrated to afford 2,4-difluoro- 5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6-yl]aniline (800 mg, 77%) as a brown solid. MS ESI calculated for C 17 H 16 F 2 N 4 O [M + H] + , 331.13, found 331.10. [00449] Step 3: To a stirred mixture of 2,4-difluoro-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6- yl]aniline (100 mg, 0.30 mmol) and triphosgene (35.93 mg, 0.12 mmol) in Tetrahydrofuran (5.5 mL) was added N,N-Diisopropylethylamine (195.63 mg, 1.52 mmol) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for additional 30 min at room temperature. To the above mixture was added (3S)-3-(2,2,2-trifluoroethyl) pyrrolidine ·HCl salt (57.40 mg, 0.30 mmol) in Tetrahydrofuran (1.5 mL) dropwise at room temperature. The reaction mixture was stirred for additional 2 h at room temperature. The residue was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH 4 HCO 3 ), 50% to 80% gradient in 20 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (52.8 mg, 34%) as a white solid. MS ESI calculated for C 24 H 24 F 5 N 5 O 2 [M + H] + , 510.19, found 510.30; 1 H NMR (400 MHz, DMSO- d6) δ 8.35 (d, J = 1.7 Hz, 1H), 8.05 (s, 1H), 7.95 (d, J = 1.2 Hz, 1H), 7.68-7.66 (m, 1H), 7.52 (d, J = 1.2 Hz, 1H), 7.41-7.39 (m, 1H), 6.50 (s, 1H), 3.81 (t, J = 4.7 Hz, 4H), 3.73-3.64 (m, 1H), 3.58-3.55 (m, 5H), 3.34-3.28 (m, 1H), 3.07-3.02 (m, 1H), 2.48-2.43 (m, 3H), 2.10-1.99 (m, 1H), 1.70-1.62 (m, 1H). [00450] Example 103: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(8-morpholino imidazo[1,2- a]pyridin-6-yl)phenyl)-1H-pyrazole-4-carboxamide [00451] Step 1: To a stirred solution of ethyl (2E)-2-cyano-3-ethoxyprop-2-enoate (7 g, 41.37 mmol) and EtONa (2.67 g, 39.30 mmol) in EtOH (50 mL) was added tert-butylhydrazine·HCl salt (5.16 g, 41.37 mmol) in portions at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at 70 °C under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (5/1). The fractions containing the desired product were combined and concentrated to afford ethyl 5-amino-1-tert-butylpyrazole-4-carboxylate (8.4 g, crude) as a yellow oil. MS ESI calculated for C10H17N3O2 [M+H] + , 212.13, found 212.15. [00452] Step 2: To a stirred solution of ethyl 5-amino-1-tert-butylpyrazole-4-carboxylate (500 mg, 2.36 mmol) and CuBr2 (634.33 mg, 2.84 mmol) in ACN (5 mL) was added t-BuONO (317.27 mg, 3.07 mmol) in portions at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 2 h at 45 °C under nitrogen atmosphere. The resulting mixture was quenched with sat. NH4Cl (aq.) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 50 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford ethyl 5-bromo-1-tert-butylpyrazole-4-carboxylate (490 mg, 75%) as a white solid. MS ESI calculated for C10H15BrN2O2 [M+H] + , 275.03, 277.03, found 275.00, 277.00; 1 H NMR (400 MHz, CDCl 3 ) δ 7.87 (s, 1H), 4.34-4.28 (m, 2H), 1.77 (s, 9H), 1.35 (t, J = 7.1 Hz, 3H). [00453] Step 3: To a stirred solution of ethyl 5-bromo-1-tert-butylpyrazole-4-carboxylate (200 mg, 0.90 mmol) in THF (4 mL) was added n-BuLi (0.99 mL, 0.99 mmol, 1 M in hexane) dropwise at - 78 °C under nitrogen atmosphere. The reaction mixture was stirred for 30 min at -78 °C under nitrogen atmosphere. To the above mixture was added NFSI (427.91 mg, 1.35 mmol) at -78 °C. The reaction mixture was stirred for 2 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with NH 4 Cl (aq.) and extracted with EtOAc (3 x 20 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford ethyl 1-tert-butyl-5-fluoropyrazole-4- carboxylate (80 mg, 41%) as an off-white oil. MS ESI calculated for C10H15FN2O2 [M+H] + , 215.11, found 215.10; 1 H NMR (400 MHz, DMSO-d6) δ 7.73 (d, J = 2.5 Hz, 1H), 4.34-4.30 (m, 2H), 1.63 (s, 9H), 1.36 (t, J = 7.1 Hz, 3H). [00454] Step 4: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (45.70 mg, 0.14 mmol) in LiHMDS (1 mL, 1 M in THF) was added ethyl 1-tert- butyl-5-fluoropyrazole-4-carboxylate (30 mg, 0.14 mmol) in THF (1 mL) dropwise at 0 °C under nitrogen atmosphere. The resulting mixture was stirred for 1 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched by the addition of sat. NH4Cl (aq.) (15 mL) and extracted with EtOAc (2 x 20 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by Prep-TLC, eluted with CH 2 Cl 2 /MeOH (10/1) to afford crude product (50 mg). The crude product (50 mg) was purified by Prep-HPLC with the following conditions: Column: XBridge Shield RP18 OBD Column, 19 x 250 mm, 10 μm; Mobile Phase A: Water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 20% B to 30% B in 8 min; Wavelength: 254/220 nm; RT1: 6.48 min. The fractions containing the desired product were combined and concentrated to afford title compound (22.3 mg, 32%) as a white solid. MS ESI calculated for C 26 H 28 F 2 N 6 O 2 [M+H] + , 495.22, found 495.20; 1 H NMR (400 MHz, DMSO-d6) δ 9.67 (s, 1H), 8.15 (d, J = 1.4 Hz, 1H), 8.00 (d, J = 2.5 Hz, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.56-7.49 (m, 2H), 7.28 (d, J = 11.5 Hz, 1H), 6.36 (d, J = 1.5 Hz, 1H), 3.84 (t, J = 4.7 Hz, 4H), 3.55 (t, J = 4.7 Hz, 4H), 2.29 (s, 3H), 1.58 (d, J = 1.4 Hz, 9H). [00455] Example 110: 1-(tert-butyl)-N-(4-chloro-3-(8-morpholinoimidazo[1,2-a]pyri din-6-yl)phenyl)-5- fluoro-1H-pyrazole-4-carboxamide [00456] Step 1: To a stirred solution of 4-chloro-3-iodoaniline (1 g, 3.94 mmol), KOAc (801.49 mg, 7.88 mmol) and bis(pinacolato)diboron (1.50 g, 5.91 mmol) in DMF (10 mL) was added Pd(dppf)Cl 2 ·CH 2 Cl 2 (160.69 mg, 0.19 mmol) in portions at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 2 h at 120 °C under nitrogen atmosphere. The resulting mixture was diluted with water (50 mL) and extracted with EtOAc (3 x 100 mL). The combined organic layers were washed with brine (1 x 300 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (5/1). The fractions containing the desired product were combined and concentrated to afford 4-chloro-3-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl) aniline (1.56 g, crude) as a yellow oil. MS ESI calculated for C12H17BClNO2 [M+H] + , 254.10, 256.10, found 254.10, 256.10. [00457] Step 2: To a stirred solution of 4-{6-chloroimidazo[1,2-a]pyridin-8-yl}morpholine (500 mg, 2.10 mmol) and XPhos palladium(II) biphenyl-2-amine chloride (165.51 mg, 0.21 mmol) in K3PO4 (10 mL, 0.5 M) and THF (5 mL) was added 4-chloro-3-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)aniline (533.32 mg, 2.10 mmol) in portions at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 40 °C. The resulting mixture was diluted with water (40 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (1 x 200 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford 4-chloro-3-[8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]aniline (433 mg, 62%) as a white solid. MS ESI calculated for C 17 H 17 ClN 4 O [M+H] + , 329.11, 331.11, found 329.05, 331.05; 1 H NMR (400 MHz, CDCl3) δ 7.86 (d, J = 1.4 Hz, 1H), 7.62 (d, J = 1.2 Hz, 1H), 7.57 (d, J = 1.2 Hz, 1H), 7.27 (d, J = 8.5 Hz, 1H), 6.74-6.63 (m, 2H), 6.52 (d, J = 1.5 Hz, 1H), 4.00 (t, J = 5.7 Hz, 4H), 3.62 (t, J = 5.7 Hz, 4H). [00458] Step 3: To a stirred mixture of 4-chloro-3-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6-yl]ani line (100 mg, 0.30 mmol), bis(lambda2-cobalt(2+)) octakis(methanidylidyneoxidanium) (31.20 mg, 0.09 mmol) and Pd(dppf)Cl 2 ·CH 2 Cl 2 (24.78 mg, 0.03 mmol) in dioxane (2 mL) was added TEA (92.33 mg, 0.91 mmol) and 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (100.85 mg, 0.45 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/2) to afford the crude product. The crude product (100 mg) was purified by Prep-HPLC with the following conditions: Column: XSelect CSH Prep C 18 OBD Column, 19 x 250 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 20 mL/min; Gradient: 52% B to 57% B in 8 min, 57% B; Wavelength: 254 nm; RT1: 9 min. The fractions containing the desired product were combined desired product were combined and concentrated to afford the title compound (38.5 mg, 24%) as a white solid. MS ESI calculated for C25H26ClFN6O2 [M+H] + , 497.18 found 497.20; 1 H NMR (400 MHz, DMSO-d6) δ 10.02 (s, 1H), 8.28 (d, J = 1.4 Hz, 1H), 8.03 (d, J = 2.5 Hz, 1H), 7.95 (d, J = 1.2 Hz, 1H), 7.85 (d, J = 2.6 Hz, 1H), 7.77 (dd, J = 8.8, 2.6 Hz, 1H), 7.59-7.51 (m, 2H), 6.46 (d, J = 1.5 Hz, 1H), 3.81 (t, J = 4.6 Hz, 4H), 3.55 (t, J = 4.7 Hz, 4H), 1.57 (s, 9H). [00459] Example 111: 1-tert-Butyl-5-fluoro-N-{2-fluoro-5-[3-fluoro-8-(morpholin-4 -yl)imidazo[1,2- a]pyridin-6-yl]-4-methylphenyl}pyrazole-4-carboxamide [00460] Step 1: To a stirred solution of 8-bromo-6-chloroimidazo[1,2-a]pyridine (10 g, 43.20 mmol) and NaH (1.90 g, 47.52 mmol, 60%) in THF (100 mL) was added Select fluor (15.30 g, 43.20 mmol) in portions at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 16 h at 60 °C under nitrogen atmosphere. The resulting mixture was diluted with NH 4 Cl (20 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (3x50 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (6/1). The fractions containing the desired product were combined and concentrated to afford 8- bromo-6-chloro-3-fluoroimidazo[1,2-a] pyridine (3.3 g, 30%) as a light-yellow solid. MS ESI calculated for C7H3BrClF2 [M + H] + , 248.92, found, 248.85. [00461] Step 2: To a stirred solution of 8-bromo-6-chloro-3-fluoroimidazo[1,2-a] pyridine (300 mg, 1.21 mmol), morpholine (105.27 mg, 1.21 mmol) and K 3 PO 4 (765 mg, 3.60 mmol) in dioxane (3 mL) were added Pd(OAc)2 (27 mg, 0.12 mmol) and Dppf (199 mg, 0.36 mmol) in portions at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 80 °C under nitrogen atmosphere. The resulting mixture was diluted with water (30 mL). and extracted with EtOAc (3 x 30 mL). The combined organic layers were washed with brine (3 x 30 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (5/1). The fractions containing the desired product were combined and concentrated to afford 4-{6-chloro-3-fluoroimidazo[1,2-a] pyridin-8-yl}morpholine (200 mg, 65%) as an off- white solid. MS ESI calculated for C11H11ClFN3O [M + H] + , 256.68, found, 256.70. [00462] Step 3: To a stirred mixture of 4-{6-chloro-3-fluoroimidazo[1,2-a]pyridin-8-yl}morpholine (200 mg, 0.78 mmol) and 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2-yl)aniline (256.54 mg, 0.86 mmol) in THF (5 mL) and H2O (0.5 mL) were added 2nd Generation XPhos Precatalyst (61 mg, 0.07 mmol) and K 3 PO 4 (332 mg, 1.56 mmol) at room temperature under nitrogen atmosphere. The mixture was allowed to cool down to room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (5/1) to afford 2-fluoro-5-(3-fluoro-8- morpholinoimidazo[1,2-a]pyridin-6-yl)-4-methylaniline (190 mg, 71%) as a yellow solid. MS ESI calculated for C18H18F2N4O [M + H] + .345.14, found 345.10. [00463] Step 4: To a stirred solution of 2-fluoro-5-[3-fluoro-8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]-4-methylaniline (80 mg, 0.23 mmol), bis(lambda2-cobalt(2 + )) octakis(methanidylidyneoxidanium) (23.83 mg, 0.07 mmol) and Pd(dppf)Cl 2 ·CH 2 Cl 2 (18.92 mg, 0.02 mmol) in dioxane (1 mL) were added TEA (139.38 mg, 1.38 mmol) and 4-bromo-1-(tert- butyl)-5-fluoro-1H-pyrazole (102.79 mg, 0.46 mmol) and at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1) to afford the crude product which was purified by Prep-HPLC with the following conditions: column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: Water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 47% B to 57% B in 10 min, 57% B; Wave Length: 220/254 nm; RT1: 8.73 min. The fractions containing the desired product were combined and concentrated to afford the title compound (7.2 mg, 6%). MS ESI calculated for C 26 H 27 F 3 N 6 O 2 [M + H] + 513.21, found 513.30; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.69 (s, 1H), 8.00 (d, J = 2.5 Hz, 1H), 7.78 (d, J = 1.4 Hz, 1H), 7.55 (d, J = 7.9 Hz, 1H), 7.34-7.24 (m, 2H), 6.36 (d, J = 1.4 Hz, 1H), 3.83-3.77 (m, 4H), 3.57-3.42 (m, 4H), 2.30 (s, 3H), 1.58 (d, J = 1.5 Hz, 9H). [00464] Example 112: 2-Fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6-yl]aniline [00465] Step 1: To a stirred mixture of 8-bromo-6-chloroimidazo[1,2-a] pyridine (1 g, 4.32 mmol), morpholine (0.38 g, 4.36 mmol) and Pd(OAc)2 (0.10 g, 0.43 mmol) in dioxane (10 mL, 118.04 mmol) were added Dppf (0.72 g, 1.29 mmol) and K 3 PO 4 (2.75 g, 12.96 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 3 h at 80 °C. The resulting mixture was diluted with water (50 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 80 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford 4-{6-chloroimidazo[1,2-a]pyridin-8- yl}morpholine (1.52 g, 76%) as an off-white solid. MS ESI calculated for C 11 H 12 ClN 3 O [M+H] + , 238.07, 240.07, found 238.10, 240.10; 1 H NMR (400 MHz, CDCl 3 ) δ 7.85 (d, J = 1.6 Hz, 1H), 7.59 (d, J = 1.6 Hz, 1H), 7.50 (d, J = 1.2 Hz, 1H), 6.39 (d, J = 1.6 Hz, 1H), 3.99 (t, J = 4.8 Hz, 4H), 3.59 (t, J = 4.8 Hz, 4H). [00466] Step 2: To a stirred mixture of 4-{6-chloroimidazo[1,2-a]pyridin-8-yl}morpholine (180 mg, 0.76 mmol) and 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2-yl)aniline (190 mg, 0.76 mmol), K3PO4 (321 mg, 1.51 mmol) in THF (2 mL) and H2O (0.2 mL) was added 2nd Generation XPhos Precatalyst (59 mg, 0.08 mmol) in portions at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 80 °C. The resulting mixture was diluted with water (30 mL) and extracted with EtOAc (3 x 30 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH4HCO3), 5% to 95% gradient in 25 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6-yl]aniline (178 mg, 72%) as a white solid. MS ESI calculated for C 18 H 19 FN 4 O [M+H] + , 327.15, found 327.15; 1 H NMR (400 MHz, DMSO-d6) δ 8.07 (d, J = 1.2 Hz, 1H), 7.88 (d, J = 1.2 Hz, 1H), 7.49 (d, J = 1.2 Hz, 1H), 6.95 (d, J = 12.4 Hz, 1H), 6.72 (d, J = 9.2 Hz, 1H), 6.31 (d, J = 1.6 Hz, 1H), 5.01 (s, 2H), 3.81 (t, J = 4.8 Hz, 4H), 3.53 (t, J = 4.8 Hz, 4H), 2.12 (s, 3H). [00467] Example 113 and 114: 2-(1,1-Difluoropropan-2-yl)-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)isonicotinamide [00468] Step 1: To a stirred solution of methyl 2-acetylpyridine-4-carboxylate (500 mg, 2.79 mmol) in DMF (6 mL) was added difluoro(triphenylphosphaniumyl)acetate (1.99 g, 5.58 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 3 h at 60 °C under nitrogen atmosphere. The resulting mixture was diluted with water (80 mL) and extracted with ethyl acetate (3 x 60 mL). The combined organic layers were washed with brine (50 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1) to afford the crude product. The crude product was further purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, acetonitrile in water, 30% to 70% gradient in 15 min; detector, UV 254/210 nm. The fractions containing the desired product were combined and concentrated to afford methyl 2-(1,1- difluoroprop-1-en-2-yl)pyridine-4-carboxylate (190 mg, 32%) as a pink oil. MS ESI calculated for C 10 H 9 F 2 NO 2 [M + H] + , 214.06, found 213.95; 1 H NMR (400 MHz, CDCl 3 ) δ 8.79 (dd, J = 5.2, 1.2 Hz, 1H), 8.07-8.05 (m, 1H), 7.73 (dd, J = 5.2, 1.6 Hz, 1H), 3.99 (s, 3H), 2.12 (t, J = 3.6 Hz, 3H). [00469] Step 2: To a stirred solution of methyl 2-(1,1-difluoroprop-1-en-2-yl)pyridine-4-carboxylate (170 mg, 0.80 mmol) in THF (3 mL) was added Pd/C (170 mg, 1.59 mmol, 10%) under nitrogen atmosphere. The reaction mixture was degassed with hydrogen atmosphere for three times and stirred for 5 h under hydrogen atmosphere. The resulting mixture was filtered, the filter cake was washed with MeOH (3 x 10 mL). The filtrate was concentrated under reduced pressure. The residue was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, acetonitrile in water, 20% to 80% gradient in 20 min; detector, UV 210/278 nm. The fractions containing the desired product were combined and concentrated to afford methyl 2-(1,1-difluoropropan-2-yl)pyridine-4-carboxylate (105 mg, 41 %) (67.7% Purity) as a light yellow oil. MS ESI calculated for C10H11F2NO2 [M + H] + , 216.08, found 216.05; 1 H NMR (400 MHz, CDCl3) δ 8.76 (dd, J = 4.8, 0.8 Hz, 1H), 7.81 (t, J = 1.2 Hz, 1H), 7.78 (dd, J = 4.8, 1.6 Hz, 1H), 6.27-5.98 (m, 1H), 3.99 (s, 3H), 1.48 (d, J = 7.2 Hz, 3H). [00470] Step 3: To a stirred solution of methyl 2-(1,1-difluoropropan-2-yl)pyridine-4-carboxylate (105 mg, 0.49 mmol) in MeOH (1 mL), H2O (1 mL) and THF (1 mL) was added LiOH . H2O (61 mg, 1.47 mmol) in portions at 0 °C. The reaction mixture was stirred for 2 h at room temperature. The resulting mixture was acidified to pH 4 with HCl (aq.) and concentrated under reduced pressure. The residue was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, acetonitrile in water, 5% to 95% gradient in 20 min; detector, UV 200/273 nm. The fractions containing the desired product were combined and concentrated to afford 2-(1,1-difluoropropan-2-yl)pyridine-4-carboxylic acid (80 mg, 73%) (89% Purity) as an off-white solid. MS ESI calculated for C9H9F2NO2 [M + H] + , 202.06, found 202.10; 1 H NMR (400 MHz, DMSO-d 6 ) δ 8.68 (dd, J = 4.8, 0.8 Hz, 1H), 7.80 (t, J = 1.2 Hz, 1H), 7.71 (dd, J = 4.8, 1.6 Hz, 1H), 6.46-6.16 (m, 1H), 3.61-3.47 (m, 1H), 1.35 (d, J = 6.8 Hz, 3H). [00471] Step 4: To a stirred mixture of 2-(1,1-difluoro-2-methylpropan-2-yl)pyridine-4-carboxylic acid (80 mg, 0.37 mmol) in T 3 P (1 mL) and Pyridine (1 mL) was added 2-fluoro-4-methyl-5-[8- (morpholin-4-yl)imidazo[1,2-a]pyridin-6-yl]aniline (110 mg, 0.37 mmol). The reaction mixture was stirred for 2 h at room temperature. The resulting mixture was diluted with water (50 mL) and extracted with ethyl acetate (3 x 50 mL). The combined organic layers were washed with saturated brine (50 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by Prep-TLC, eluted with PE/EA/EtOH = 8/3/1 to afford the crude product. The crude product was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, acetonitrile in water (10 mmol NH4HCO3), 5% to 95% gradient in 15 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 2- (1,1-difluoropropan-2-yl)-N-{2-fluoro-4-methyl-5-[8-(morphol in-4-yl)imidazo[1,2-a]pyridin-6- yl]phenyl}pyridine-4-carboxamide (70 mg, 41%) as an off-white solid. MS ESI calculated for C27H26F3N5O2 [M + H] + , 510.20, found 510.15; 1 H NMR (400 MHz, CDCl3) δ 8.86 (dd, J = 5.2, 0.8 Hz, 1H), 8.36 (d, J = 8.0 Hz, 1H), 8.06 (s, 1H), 7.79 (d, J = 1.6 Hz, 1H), 7.68-7.61 (m, 3H), 7.58 (d, J = 1.2 Hz, 1H), 7.13 (d, J = 12.0 Hz, 1H), 6.41 (s, 1H), 6.29-5.99 (m, 1H), 4.03-4.00 (m, 4H), 3.60-3.57 (m, 4H), 3.55-3.41 (m, 1H), 2.31 (s, 3H), 1.51 (d, J = 6.8 Hz, 3H). [00472] Step 5: The 2-(1,1-difluoropropan-2-yl)-N-{2-fluoro-4-methyl-5-[8-(morph olin-4- yl)imidazo[1,2-a]pyridin-6-yl]phenyl}pyridine-4-carboxamide (70 mg, 0.14 mmol) was purified by Chiral-Prep-HPLC with the following conditions: Column: CHIRAL ART Cellulose-SC, 2 x 25 cm, 5 μm; Mobile Phase A: Hex (0.1% 2 M NH3-MeOH)--HPLC, Mobile Phase B: MeOH: DCM=1: 1--HPLC; Flow rate: 20 mL/min; Gradient: 40% B to 40% B in 13.5 min; Wave Length: 220\254 nm; RT1: 8.996 min; RT2: 11.239 min; Sample Solvent: EtOH: DCM=1: 1-- HPLC; Injection Volume: 1.3 mL. [00473] PEAK 1 (EXAMPLE 113: 2-(1,1-difluoropropan-2-yl)-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)isonicotinamide) : The fractions (RT 8.996 min) were combined and concentrated to afford the title compound (26.9 mg, 38%) as an off-white solid of undetermined absolute stereochemistry. MS ESI calculated for C27H26F3N5O2 [M + H] + , 510.20, found 510.25; 1 H NMR (400 MHz, CDCl3) δ 8.80 (d, J = 4.8 Hz, 1H), 8.36 (d, J = 8.0 Hz, 1H), 8.08 (d, J = 2.0 Hz, 1H), 7.80 (d, J = 1.6 Hz, 1H), 7.68-7.54 (m, 4H), 7.13 (d, J = 11.6 Hz, 1H), 6.42 (s, 1H), 6.29-5.99 (m, 1H), 4.03-4.00 (m, 4H), 3.59-3.57 (m, 4H), 3.53-3.41 (m, 1H), 2.31 (s, 3H), 1.51 (d, J = 6.8 Hz, 3H). [00474] PEAK 2 (EXAMPLE 114: 2-(1,1-difluoropropan-2-yl)-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)isonicotinamide) : The fractions (RT 11.239 min) were combined and concentrated to afford the title compound (26.2 mg, 37%) as an off-white solid of undetermined absolute stereochemistry. MS ESI calculated for C 27 H 26 F 3 N 5 O 2 [M + H] + , 510.20, found 510.20; 1 H NMR (400 MHz, CDCl 3 ) δ 8.80 (d, J = 4.8 Hz, 1H), 8.35 (d, J = 8.0 Hz, 1H), 8.08 (d, J = 3.2 Hz, 1H), 7.78 (d, J = 1.6 Hz, 1H), 7.68 (d, J = 1.6 Hz, 1H), 7.63-7.61 (m, 2H), 7.57 (d, J = 1.2 Hz, 1H), 7.13 (d, J = 11.6 Hz, 1H), 6.38 (s, 1H), 6.29-5.99 (m, 1H), 4.02-3.99 (m, 4H), 3.60-3.57 (m, 4H), 3.54-3.41 (m, 1H), 2.31 (s, 3H), 1.51 (d, J = 7.2 Hz, 3H). [00475] Example 115: 1-tert-Butyl-2-fluoro-N-{2-fluoro-4-methyl-5-[8-(morpholin-4 -yl)imidazo[1,2- a]pyridin-6-yl]phenyl}imidazole-4-carboxamide
[00476] Step 1: To a stirred mixture of ethyl 1-tert-butylimidazole-4-carboxylate (300 mg, 1.53 mmol) and sodium bicarbonate (385.25 mg, 4.59 mmol) in acetonitrile (10 mL) was added Selectfluor (2.71 g, 7.65 mmol). The reaction mixture was stirred for 16 h at room temperature under nitrogen atmosphere. The resulting mixture was diluted with water (10 mL) and extracted with ethyl acetate (3 x 10 mL). The combined organic layers were washed with brine (3 x 20 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/ EA (1/1). The fractions containing the desired product were combined and concentrated to afford ethyl 1-tert-butyl-2-fluoroimidazole-4-carboxylate (100 mg, 31%) as a brown oil. MS ESI calculated for C 10 H 15 FN 2 O 2. [M + H] + , 215.11, found 215.05. [00477] Step 2: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (137.11 mg, 0.42 mmol) in Lithium bis(trimethylsilyl)amide (2 mL) was added ethyl 1-tert-butyl-2-fluoroimidazole-4-carboxylate (90 mg, 0.42 mmol) (was dissolved in tetrahydrofuran (1 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 2 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with sat. ammonium chloride (aq.) at room temperature. The resulting mixture was extracted with ethyl acetate (3 x 10 mL). The combined organic layers were washed with brine (3 x 15 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by Prep-TLC, eluted with DCM/MeOH (20/1) to afford the crude product. The crude product was purified by reverse phase Flash chromatography with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: Water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: acetonitrile; Flow rate: 60 mL/min; Gradient: 39% B to 49% B in 10 min, 49% B; Wavelength: 254 nm; RT1: 10 min. The fractions containing the desired product were combined and concentrated to afford 1-tert-butyl-2-fluoro-N-{2-fluoro-4-methyl-5-[8-(morpholin-4 - yl)imidazo[1,2-a]pyridin-6-yl]phenyl}imidazole-4-carboxamide (67.1 mg, 21%) as an off-white solid. MS ESI calculated for C26H28F2N6O2. [M + H] + , 495.22, found 495.20; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.41 (s, 1H), 8.48 (s, 1H), 8.22 (s, 1H), 8.03 (s, 1H), 7.94 (d, J = 7.9 Hz, 1H), 7.67 (s, 1H), 7.34 (d, J = 11.6 Hz, 1H), 7.07 (s, 1H), 3.84 (t, J = 4.6 Hz, 4H), 3.28 (d, J = 5.6 Hz, 4H), 2.28 (s, 3H), 1.59 (d, J = 1.1 Hz, 9H). [00478] Example 119-121: 3-Fluoro-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]p yridin-6- yl)phenyl)-4-isopropylpyrrolidine-1-carboxamide [00479] Step 1: To a stirred solution of benzyl 6-oxa-3-azabicyclo[3.1.0]hexane-3-carboxylate (5 g, 22.80 mmol) and copper(I) bromide; dimethyl sulfide (0.94 g, 4.56 mmol) in THF (200 mL) was added bromo(isopropyl)magnesium (13.4 g, 91.22 mmol) dropwise at -20 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at -20 °C under nitrogen atmosphere. The resulting mixture was quenched by the addition of sat. NH4Cl (aq.) (300 mL) at 0 °C. The resulting mixture was extracted with EtOAc (3 x 300 mL). The combined organic layers were washed with brine (2 x 200 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH 4 HCO 3 ), 25 % to 95 % gradient in 35 min; detector, UV 254 nm. The fractions containing the desired prdoduct were combined and concentrated to afford benzyl 3- hydroxy-4-isopropylpyrrolidine-1-carboxylate (2.05 g, 34%) as a colorless oil. MS ESI calculated for C15H21NO3 [M + H] + , 264.33, found, 264.15. [00480] Step 2: To a stirred mixture of benzyl 3-isopropyl-4-oxopyrrolidine-1-carboxylate (700 mg, 2.67 mmol) in DAST (10 mL, 8.03 mmol) at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 4 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched by the addition of NH 4 HCO 3 (aq.) at 0 °C. The resulting mixture was extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (3 x 50 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (5/1). The fractions containing the desired prdoduct were combined and concentrated to afford benzyl 3,3- difluoro-4-isopropylpyrrolidine-1-carboxylate (250 mg, 32%) as a yellow oil. MS ESI calculated for C 15 H 20 FNO 2 [M + H] + .266.32, found 266.15. [00481] Step 3: A solution of benzyl 3-fluoro-4-isopropylpyrrolidine-1-carboxylate (300 mg, 1.13 mmol) in TFA (3 mL) was stirred for 16 h at 60 °C. The resulting mixture was allowed to cool down to room temperature. The resulting mixture was concentrated under reduced pressure to afford 3- fluoro-4-isopropylpyrrolidine (100 mg, crude) as a yellow oil. MS ESI calculated for C7H14FN [M + H] + , 132.19, found 132.60. [00482] Step 4: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin e- 6-yl]aniline (150 mg, 0.46 mmol) and DIEA (297 mg, 2.30 mmol) in THF (7.6 mL) was added triphosgene (54 mg, 0.18 mmol). The reaction mixture was stirred for 15 min at room temperature under nitrogen atmosphere. To the above mixture was added 3-fluoro-4- isopropylpyrrolidine (60 mg, 0.46 mmol). The reaction mixture was stirred for 2 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with MeOH (2 mL) and concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with CH 2 Cl 2 /MeOH (10/1). The fractions containing the desired prdoduct were combined and concentrated to afford 3-fluoro-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridine-6-yl)phenyl)-4-isopropylpyr rolidine-1-carboxamide (100 mg, 45%) as a yellow solid. MS ESI calculated for C 26 H 31 F 2 N 5 O 2 [M + H] + , 484.56, found 484.25. [00483] Step 5: The 3-fluoro-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1,2-a]p yridine-6- yl)phenyl)-4-isopropylpyrrolidine-1-carboxamide (100 mg) was purified by Prep-HPLC with the following conditions: Column: CHIRALPAK IH, 2 x 25 cm, 5 μm; Mobile Phase A: Hex (0.5% 2 M NH3-MeOH)—HPLC, Mobile Phase B: MeOH: DCM=1: 1—HPLC; Flow rate: 20 mL/min; Gradient: 20% B to 20% B in 15 min; Wave Length: 254/220 nm; RT1: 8.19 min; RT2: 11.76 min; Sample Solvent: MeOH: DCM=1: 1—HPLC; Injection Volume: 0.5 mL. [00484] PEAK 1 (EXAMPLE 119: 3-Fluoro-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1,2- a]pyridin-6-yl)phenyl)-4-isopropylpyrrolidine-1-carboxamide) : The fractions (RT 8.19 min) were combined and concentrated to afford the title compound (33.3 mg, 14%) as an off-white solid of undetermined absolute stereochemistry. MS ESI calculated for C 26 H 31 F 2 N 5 O 2 [M + H] + , 484.56, found 484.30; 1 H NMR (400 MHz, DMSO-d6) δ 8.12 (d, J = 1.4 Hz, 1H), 8.02 (s, 1H), 7.89 (d, J = 1.2 Hz, 1H), 7.50 (d, J = 1.2 Hz, 1H), 7.42 (d, J = 8.1 Hz, 1H), 7.18 (d, J = 11.6 Hz, 1H), 6.34 (d, J = 1.5 Hz, 1H), 5.23 (d, J = 53.4 Hz, 1H), 3.80 (t, J = 4.6 Hz, 4H), 3.78-3.59 (m, 3H), 3.53 (t, J = 4.7 Hz, 4H), 3.10 (t, J = 10.5 Hz, 1H), 2.25 (s, 3H), 1.98-1.96 (m, 1H), 1.74- 1.70 (m, 1H), 1.01 (d, J = 6.5 Hz, 3H), 0.92 (d, J = 6.6 Hz, 3H). [00485] PEAK 2 (EXAMPLE 120: 3-Fluoro-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1,2- a]pyridin-6-yl)phenyl)-4-isopropylpyrrolidine-1-carboxamide) : The fractions (RT 11.76 min) were combined and concentrated to afford the title compound (29.7 mg, 13%) as an off-white solid of undetermined absolute stereochemistry. MS ESI calculated for C26H31F2N5O2 [M + H] + , 484.56, found 484.35; 1 H NMR (400 MHz, DMSO-d6) δ 8.12 (d, J = 1.4 Hz, 1H), 8.03 (s, 1H), 7.89 (d, J = 1.2 Hz, 1H), 7.50 (d, J = 1.2 Hz, 1H), 7.42 (d, J = 8.2 Hz, 1H), 7.18 (d, J = 11.6 Hz, 1H), 6.34 (d, J = 1.5 Hz, 1H), 5.23 (d, J = 53.5 Hz, 1H), 3.83 (t, J = 4.7 Hz, 4H), 3.76-3.63 (m, 3H), 3.53 (t, J = 4.7 Hz, 4H), 3.11-3.09 (m, 1H), 2.25 (s, 3H), 2.15-1.86 (m, 1H), 1.83-1.65 (m, 1H), 1.01 (d, J = 6.5 Hz, 3H), 0.92 (d, J = 6.6 Hz, 3H). [00486] PEAK 3 (EXAMPLE 121: 3-Fluoro-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[1,2- a]pyridin-6-yl)phenyl)-4-isopropylpyrrolidine-1-carboxamide) : The fractions (RT 8.2-11.76 min) were combined and concentrated to afford the title compound (1.7 mg, 0.56%) as an off- white solid of undetermined absolute stereochemistry. MS ESI calculated for C 26 H 31 F 2 N 5 O 2 [M + H] + , 484.56, found 484.35; 1 H NMR (400 MHz, Chloroform-d) δ 8.10 (d, J = 8.2 Hz, 1H), 7.76-7.71 (m, 1H), 7.59 (d, J = 1.7 Hz, 1H), 7.54-7.49 (m, 1H), 7.00 (d, J = 11.5 Hz, 1H), 6.35 (d, J = 12.4 Hz, 2H), 5.18-5.16 (m, 1H), 3.98 (t, J = 5.0 Hz, 4H), 3.91-3.60 (m, 3H), 3.58-3.42 (m, 5H), 2.23 (d, J = 2.0 Hz, 3H), 2.16-1.84 (m, 2H), 1.06-1.04 (m, 6H). [00487] Example 122 and 123: 3-(Cyclopropyldifluoromethyl)-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)pyrrolidine-1-ca rboxamide [00488] Step 1: To a stirred solution of 1-(tert-butoxycarbonyl)pyrrolidine-3-carboxylic acid (5 g, 23.23 mmol) and N,O-dimethylhydroxylamine·HCl salt(3.40 g, 34.84 mmol) in THF (50 mL) were added EDCI (6.68 g, 34.84 mmol) and TEA (7.05 g, 69.69 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 2 h at room temperature under nitrogen atmosphere. The resulting mixture was diluted with water (300 mL) and extracted with EtOAc (3 x 200 mL). The combined organic layers were washed with brine (3 x 200 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/3). The fractions containing the desired product were combined and concentrated to afford tert-butyl 3- [methoxy(methyl)carbamoyl]pyrrolidine-1-carboxylate (3.2 g, 53%) as a yellow oil. 1 H NMR (400 MHz, Chloroform-d) δ 3.74-3.72 (m, 3H), 3.71-3.52 (m, 2H), 3.50-3.30 (m, 3H), 3.22 (s, 3H), 2.23-2.02 (m, 2H), 1.48 (d, J = 1.0 Hz, 9H). [00489] Step 2: To a stirred solution of tert-butyl 3-[methoxy(methyl)carbamoyl]pyrrolidine-1- carboxylate (4.6 g, 17.81 mmol) in THF (30 mL) was added bromo(cyclopropyl)magnesium (10.35 g, 71.23 mmol) dropwise at -78 °C. The reaction mixture was stirred for 2 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched by the addition of sat. NH4Cl (aq.) (100 mL) at room temperature. The resulting mixture was extracted with EtOAc (3 x 150 mL). The combined organic layers were washed with brine (3x100 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (3/1). The fractions containing the desired product were combined and concentrated to afford tert-butyl 3- cyclopropanecarbonylpyrrolidine-1-carboxylate (3.16 g, 74%) as a light-yellow oil. 1 H NMR (300 MHz, Chloroform-d) δ 3.70-3.52 (m, 2H), 3.53-3.22 (m, 3H), 2.21-2.06 (m, 2H), 1.99-1.74 (m, 1H), 1.48 (s, 9H), 1.10-1.07 (m, 2H), 1.03-0.88 (m, 2H). [00490] Step 3: To a stirred solution of tert-butyl 3-cyclopropanecarbonylpyrrolidine-1-carboxylate (1 g, 4.18 mmol) in DCM (5 mL) was added HCl (g) (5 mL, 4 M in EA). The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was concentrated under reduced pressure to afford cyclopropyl(pyrrolidin-3-yl)methanone·HCl salt (720 mg, crude). To a stirred solution of cyclopropyl(pyrrolidin-3-yl)methanone·HCl salt (720 mg, crude) in ACN (5 mL) were added NaHCO3 (905 mg, 10.78 mmol) and benzyl chloroformate (1226 mg, 7.18 mmol) dropwise at 0 °C. The reaction mixture was stirred for 2 h at room temperature under nitrogen atmosphere. The resulting mixture was diluted with water (50 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (3 x 40 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (3/1). The fractions containing the desired product were combined and concentrated to afford benzyl 3- cyclopropanecarbonylpyrrolidine-1-carboxylate (650 mg, 57%) as a colorless oil. MS ESI calculated for C16H19NO3 [M + H] + , 274.33, found 274.35. [00491] Step 4: A solution of benzyl 3-cyclopropanecarbonylpyrrolidine-1-carboxylate (640 mg, 2.34 mmol) in BAST (5 mL) was stirred for 16 h at 60 °C under nitrogen atmosphere. The resulting mixture was quenched by the addition of sat. NaHCO3 (aq.) (10 mL) at room temperature. The resulting mixture was diluted with water (30 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (3 x 50 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (3/1). The fractions containing the desired product were combined and concentrated to afford benzyl 3- (cyclopropyldifluoromethyl)pyrrolidine-1-carboxylate (180 mg, 26%) as a yellow oil. MS ESI calculated for C16H19F2NO2 [M + H] + , 296.33, found 296.25. [00492] Step 5: A solution of 3-(cyclopropyldifluoromethyl)pyrrolidine-1-carboxylate (180 mg, 26%) in TFA (2 mL) was stirred for 1 h. The resulting mixture was concentrated under reduced pressure to afford 3-(cyclopropyldifluoromethyl)pyrrolidine 2,2,2-trifluoroacetate (213 mg, crude). MS ESI calculated for C8H13F2N [M + H] + , 162.10, found 162.10. [00493] Step 6: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (90 mg, 0.28 mmol) in THF (8 mL) was added DIEA (178 mg, 1.38 mmol) and triphosgene (32.73 mg, 0.11 mmol). The reaction mixture was stirred for 30 min at room temperature under nitrogen atmosphere. To the above mixture was added 3- (cyclopropyldifluoromethyl)pyrrolidine 2,2,2-trifluoroacetate (213 mg, 0.28 mmol, 36%). The reaction mixture was stirred for 1 h at room temperature under nitrogen atmosphere. The reaction was quenched with MeOH and concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (4/3/1) to afford the crude product. The crude product (120 mg) was purified by Prep-HPLC with the following conditions: Column: XSelect CSH Prep C18 OBD Column, 19 x 250 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 20 mL/min; Gradient: 49% B to 54% B in 8 min, 54% B; Wavelength: 254 nm; RT1: 7 min. The fractions containing the desired product were combined and concentrated to afford 3-(cyclopropyldifluoromethyl)-N- {2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridi n-6-yl]phenyl}pyrrolidine-1- carboxamide (50 mg, 35%) as a white solid. MS ESI calculated for C 27 H 30 F 3 N 5 O 2 [M + H] + , 514.56, found 514.15. [00494] Step 7: The 3-(cyclopropyldifluoromethyl)-N-{2-fluoro-4-methyl-5-[8-(mor pholin-4- yl)imidazo[1,2-a]pyridin-6-yl]phenyl}pyrrolidine-1-carboxami de (50 mg, 0.10 mmol) was purified by Prep-Chiral-HPLC with the following conditions: Column: CHIRAL ART Cellulose-SB, 2 x 25 cm, 5 μm; Mobile Phase A: Hex (0.5% 2 M NH3-MeOH)--HPLC, Mobile Phase B: MeOH: DCM=1: 1--HPLC; Flow rate: 20 mL/min; Gradient: 15% B to 15% B in 19 min; Wave Length: 254/220 nm; RT1: 16 min; RT2: 17.49 min; Sample Solvent: MeOH: DCM=1: 1--HPLC; Injection Volume: 0.5 mL. [00495] PEAK1 (EXAMPLE 121: 3-(Cyclopropyldifluoromethyl)-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)pyrrolidine-1-ca rboxamide): The fractions (RT 16 min) were combined and concentrated to afford the title compound (16.1 mg, 32%) as an off- white solid of undetermined absolute stereochemistry. MS ESI calculated for C27H30F3N5O2 [M + H] + , 514.56, found 514.15; 1 H NMR (400 MHz, DMSO-d6) δ 8.12 (d, J = 1.6 Hz, 1H), 7.98 (s, 1H), 7.89 (d, J = 1.2 Hz, 1H), 7.51 (d, J = 1.2 Hz, 1H), 7.43 (d, J = 8.2 Hz, 1H), 7.18 (d, J = 11.6 Hz, 1H), 6.34 (d, J = 1.6 Hz, 1H), 3.81 (t, J = 4.6 Hz, 4H), 3.66-3.52 (m, 6H), 3.45-3.34 (m, 2H), 2.97-2.90 (m, 1H), 2.26 (s, 3H), 2.10-2.08 (m, 1H), 2.00-1.92 (m, 1H), 1.50-1.37 (m, 1H), 0.68-0.55 (m, 4H). [00496] PEAK2 (EXAMPLE 122: 3-(Cyclopropyldifluoromethyl)-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)pyrrolidine-1-ca rboxamide): The fractions (RT 17.5 min) were combined and concentrated to afford the title compound (16.9 mg, 33%) as an off-white solid of undetermined absolute stereochemistry. MS ESI calculated for C 27 H 30 F 3 N 5 O 2 [M + H] + , 514.24, found 514.15; 1 H NMR (400 MHz, DMSO-d6) δ 8.12 (d, J = 1.4 Hz, 1H), 7.98 (s, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.51 (d, J = 1.2 Hz, 1H), 7.43 (d, J = 8.0 Hz, 1H), 7.18 (d, J = 11.6 Hz, 1H), 6.34 (d, J = 1.4 Hz, 1H), 3.81 (t, J = 4.6 Hz, 4H), 3.65-3.59 (m, 1H), 3.57-3.53 (m, 5H), 3.45-3.34 (m, 2H), 3.00-2.90 (m, 1H), 2.26 (s, 3H), 2.10-2.08 (m, 1H), 1.98-1.93 (m, 1H), 1.51-1.37 (m, 1H), 0.68-0.55 (m, 4H). [00497] Example 124: 1-(1,1-Difluoro-2-methylpropan-2-yl)-N-{2-fluoro-4-methyl-5- [8-(morpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]phenyl}pyrazole-4-carboxamide [00498] Step 1: To a stirred mixture of 4-bromopyrazole (5 g, 34.02 mmol) in DMF (50 mL) was added NaH (1.63 g, 40.82 mmol, 60%) in portions at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 15 min at room temperature under nitrogen atmosphere. To the above mixture was added methyl 2-bromo-2-methylpropanoate (11.09 g, 61.23 mmol) at room temperature. The reaction mixture was stirred for additional 2 h at room temperature. The resulting mixture was quenched with sat. NH4Cl (aq.) at 0 °C. The resulting mixture was extracted with EtOAc (3 x 300 mL). The combined organic layers were washed with brine (6 x 300 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (2/1). The fractions containing the desired product were combined and concentrated to afford methyl 2-(4-bromopyrazol-1-yl)-2-methylpropanoate (5.2 g, 61%) as a colorless oil. MS ESI calculated for C8H11BrN2O2 [M+H] + , 247.00, 248.00, found, 246.85, 248.85; 1 H NMR (400 MHz, DMSO-d6) δ 8.20 (d, J = 0.8 Hz, 1H), 7.59 (d, J = 0.8 Hz, 1H), 3.63 (s, 3H), 1.75 (s, 6H). [00499] Step 2: To a stirred mixture of methyl 2-(4-bromopyrazol-1-yl)-2-methylpropanoate (4.5 g, 18.21 mmol) in THF (45 mL) was added LiAlH 4 (1.04 g, 27.32 mmol) dropwise at 0 °C under nitrogen atmosphere. The resulting mixture was stirred for 2 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with NaOH (aq.) (15%) and water at 0 °C, after filtered, the filter cake were washed with THF (3 x 20 mL). The filtrate was concentrated under reduced pressure. The residue was purified by reversed phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 0.1% TFA), 5% to 95% gradient in 10 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 2-(4-bromopyrazol-1- yl)-2-methylpropan-1-ol (2.7 g, 67%) as a white solid. MS ESI calculated for C7H11BrN2O [M+H] + , 219.01, 221.01, found 219.15, 221.15; 1 H NMR (400 MHz, DMSO-d 6 ) δ 7.96 (d, J = 0.8 Hz, 1H), 7.53 (d, J = 0.8 Hz, 1H), 4.98 (t, J = 5.6 Hz, 1H), 3.55 (d, J = 5.6 Hz, 2H), 1.44 (s, 6H). [00500] Step 3: To a stirred mixture of 2-(4-bromopyrazol-1-yl)-2-methylpropan-1-ol (1 g, 4.56 mmol) and TEA (1.9 mL, 13.7 mmol) in DMSO (6 mL) was added SO 3 -pyridine (2.18 g, 13.7 mmol) in DMSO (4 mL) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 3 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched by the addition of Water/Ice (50 mL). The resulting mixture was extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (6 x 50 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in Water (Plus 10 mmol/L NH 4 HCO 3 ), 5% to 95% gradient in 10 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 2-(4-bromopyrazol-1-yl)-2-methylpropanal (650 mg, 32%) as a colorless oil. MS ESI calculated for C 7 H 9 BrN 2 O [M+H] + , 216.99, 218.99, found 216.80, 218.80; 1 H NMR (400 MHz, DMSO-d6) δ 9.50 (s, 1H), 8.24 (s, 1H), 7.68 (s, 1H), 1.60 (s, 6H). [00501] Step 4: To a stirred mixture of 2-(4-bromopyrazol-1-yl)-2-methylpropanal (500 mg, 2.30 mmol) in DCM (5 mL) was added DAST (371.2 mg, 23.03 mmol) in DCM (5 mL) at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 16 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with NaHCO3 (aq.) (50 mL) at °C. The resulting mixture was extracted with CH2Cl2 (3 x 50 mL). The combined organic layers were washed with brine (2 x 50 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by reversed phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH 4 HCO 3 ), 5% to 95% gradient in 10 min; detector, UV 220 nm. The fractions containing the desired product were combined and concentrated to afford the mixture of 4-bromo-1-(1,1-difluoro-2-methylpropan-2-yl)-1H-pyrazole & 4-bromo-1-(1,2-difluoro-2- methylpropyl)-1H-pyrazole (371 mg, 67%) as a light-yellow oil. MS ESI calculated for C 7 H 9 BrF 2 N 2 [M+H] + , 238.99, 240.99, found 239.10, 240.10. [00502] Step 5: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]aniline (75 mg, 0.23 mmol), Pd(dppf)Cl2·CH2Cl2 (37 mg, 0.05 mmol), bis(lambda2- cobalt(2+)) octakis(methanidylidyneoxidanium) (23 mg, 0.07 mmol) and 4-bromo-1-(1,1- difluoro-2-methylpropan-2-yl)-1H-pyrazole & 4-bromo-1-(1,2-difluoro-2-methylpropyl)-1H- pyrazole (109 mg, 0.46 mmol) in dioxane (1.5 mL) was added TEA (139 mg, 1.38 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (1/3/1) (1:1) to afford crude product. The crude product was purified by reversed phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in Water (Plus 10 mmol/L NH4HCO3), 5% to 95% gradient in 25 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford the mixture of 1-(1,1- difluoro-2-methylpropan-2-yl)-N-(2-fluoro-4-methyl-5-(8-morp holinoimidazo[1,2-a]pyridin-6- yl)phenyl)-1H-pyrazole-4-carboxamide and 1-(1,2-difluoro-2-methylpropyl)-N-(2-fluoro-4- methyl-5-(8-morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)-1H- pyrazole-4-carboxamide (43 mg, 36%) as a white solid. MS ESI calculated for C 26 H 27 F 3 N 6 O 2 [M+H] + , 513.21, found 513.15. [00503] Step 6: The mixture of 1-(1,1-difluoro-2-methylpropan-2-yl)-N-(2-fluoro-4-methyl-5- (8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)-1H-pyrazole-4-c arboxamide and 1-(1,2-difluoro- 2-methylpropyl)-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[ 1,2-a]pyridin-6-yl)phenyl)-1H- pyrazole-4-carboxamide (43 mg) was purified by Achiral-SFC with the following conditions: Column: DAICEL DCpak P4VP, 3 x 25 cm, 5 μm; Mobile Phase A: CO2, Mobile Phase B: ETOH (0.1% 2 M NH3-MEOH); Flow rate: 60 mL/min; Gradient: isocratic 27% B; Column Temperature: 35 °C; Back Pressure: 100 bar; Wave Length: 254 nm; RT1: 6.77 min; RT2: 8.08 min; Sample Solvent: MeOH--HPLC; Injection Volume: 2 mL. [00504] PEAK 2 (RT2: 8.08 min): The fractions were combined and concentrated to afford the title compound (11.9 mg, 27%) as an off-white solid. MS ESI calculated for C26H27F3N6O2 [M+H] + , 513.21, found 513.20; 1 H NMR (400 MHz, DMSO-d6) δ 9.80 (d, J = 1.6 Hz, 1H), 8.60 (s, 1H), 8.15 (d, J = 1.2 Hz, 1H), 8.10 (s, 1H), 7.89 (d, J = 1.2 Hz, 1H), 7.54 (d, J = 8.0 Hz, 1H), 7.51 (d, J = 1.2 Hz, 1H), 7.29 (d, J = 11.2 Hz, 1H), 6.37 (d, J = 1.6 Hz, 1H), 6.30-6.28 (m, 1H), 3.80 (t, J = 4.8 Hz, 4H), 3.54 (t, J = 4.8 Hz, 4H), 2.29 (s, 3H), 1.66 (s, 6H). [00505] Example 125: 1-(1,2-Difluoro-2-methylpropyl)-N-(2-fluoro-4-methyl-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)-1H-pyrazole-4-c arboxamide [00506] Step 1: The mixture of 1-(1,1-difluoro-2-methylpropan-2-yl)-N-(2-fluoro-4-methyl-5- (8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)-1H-pyrazole-4-c arboxamide and 1-(1,2-difluoro- 2-methylpropyl)-N-(2-fluoro-4-methyl-5-(8-morpholinoimidazo[ 1,2-a]pyridin-6-yl)phenyl)-1H- pyrazole-4-carboxamide (43 mg) was purified by Achiral-SFC with the following conditions: Column: DAICEL DCpak P4VP, 3 x 25 cm, 5 μm; Mobile Phase A: CO 2 , Mobile Phase B: ETOH (0.1% 2 M NH 3 -MEOH); Flow rate: 60 mL/min; Gradient: isocratic 27% B; Column Temperature: 35 °C; Back Pressure: 100 bar; Wave Length: 254 nm; RT1: 6.77 min; RT2: 8.08 min; Sample Solvent: MeOH--HPLC; Injection Volume: 2 mL. [00507] PEAK 1 (R6.77 min): The fractions were combined and concentrated to afford the title compound (22.6 mg, 52%) as an off-white solid. MS ESI calculated for C26H27F3N6O2 [M+H] + , 513.21, found 513.20; 1 H NMR (400 MHz, DMSO-d6) δ 10.01 (s, 1H), 8.68 (s, 1H), 8.20 (s, 1H), 8.16 (d, J = 1.2 Hz, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.56 (d, J = 8.0 Hz, 1H), 7.52 (d, J = 1.2 Hz, 1H), 7.30 (d, J = 11.2 Hz, 1H), 6.70-6.54 (m, 1H), 6.38 (d, J = 1.2 Hz, 1H), 3.81 (t, J = 4.4 Hz, 4H), 3.56 (t, J = 4.8 Hz, 4H), 2.30 (s, 3H), 1.51-1.37 (m, 6H). [00508] Example 136: N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyri din-6-yl]phenyl}- 1-(1,1,1-trifluoro-2-methylpropan-2-yl)pyrazole-4-carboxamid e [00509] Step 1: To a stirred mixture of benzohydrazide (10 g, 73.44 mmol) in Toluene (150 mL) was added acetone (6.40 g, 110.17 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at 110 °C under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with CH 2 Cl 2 /MeOH (20/1). The fractions containing the desired product were combined and concentrated to afford N'-(propan-2-ylidene)benzohydrazide (9.8 g, 75%) as a white solid. MS ESI calculated for C10H12N2O [M + H] + , 177.09, found, 177.15; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.42 (s, 1H), 7.84-7.82 (m, 2H), 7.81-7.43 (m, 3H), 2.01 (s, 3H), 1.95 (s, 3H). [00510] Step 2: To a stirred mixture of N'-(propan-2-ylidene)benzohydrazide (5 g, 28.37 mmol) in DCE (57 mL) were added allyltrimethylsilane (4.86 g, 42.53 mmol) and BF3-Et2O (6.04 g, 42.56 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 5 min at 85 °C under nitrogen atmosphere. The resulting mixture was allowed to cool down to room temperature. To the above mixture were added NaOAc (9.31 g, 113.50 mmol) and trimethyl(trifluoromethyl)silane (8.07 g, 56.75 mmol) in DMF (57 mL) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 2 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with sat. NaHCO3 (aq.) (500 mL) and extracted with EtOAc (3 x 300 mL). The combined organic layers were washed with brine (5 x 300 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/3). The fractions containing the desired product were combined and concentrated to afford N'-(1,1,1-trifluoro-2-methylpropan-2-yl)benzohydrazide (4.91 g, 70%) as a light yellow solid. MS ESI calculated for C11H13F3N2O [M+H] + , 247.10, found 247.00. 1 H NMR (400 MHz, DMSO-d6) δ 9.93 (d, J=6.0 Hz, 1H), 7.85-7.82 (m, 2H), 7.58-7.41 (m, 3H), 5.42 (d, J=6.0 Hz, 1H), 1.28 (s, 6H). [00511] Step 3: To a stirred mixture of N'-(1,1,1-trifluoro-2-methylpropan-2-yl)benzohydrazide (4.5 g, 18.28 mmol) in MeOH (26 mL) was added HCl (aq.) (73 mL, 292.58 mmol) dropwise at room temperature. The reaction mixture was stirred for 16 h at 80 °C. The resulting mixture was concentrated under reduced pressure to afford (1,1,1-trifluoro-2-methylpropan-2-yl)hydrazine hydrochloride (4.38 g, crude) as a light yellow solid. MS ESI calculated for C4H10ClF3N2 [M + H] + , 143.07, found 143.10; 1 H NMR (400 MHz, DMSO-d6) δ 9.53 (brs, 2H), 6.03 (brs, 1H), 1.34 (s, 6H). [00512] Step 4: To a stirred mixture of (1,1,1-trifluoro-2-methylpropan-2-yl)hydrazine hydrochloride (785 mg, 4.40 mmol) and propane, 1,1,3,3-tetramethoxy- (721 mg, 4.40 mmol) in EtOH (6.25 mL) was added HCl (conc.) (1.25 mL, 14.99 mmol) at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at 80 °C under nitrogen atmosphere. The resulting mixture was quenched with water/Ice (100 mL) and extracted with CH2Cl2 (3 x 100 mL). The combined organic layers were washed with brine (2 x 100 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (0.1% TFA), 5% to 95% gradient in 30 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 1-(1,1,1-trifluoro-2-methylpropan-2-yl)pyrazole (1.27 g, 80%) as a light yellow liquid. MS ESI calculated for C7H9F3N2 [M+H] + , 179.07, found 179.10; 1 H NMR (400 MHz, DMSO- d 6 ) δ 8.07-8.06 (m, 1H), 7.57 (t, J = 2.4 Hz, 1H), 6.40-6.38 (m, 1H), 1.83 (s, 6H). [00513] Step 5: To a stirred mixture of 1-(1,1,1-trifluoro-2-methylpropan-2-yl)pyrazole (1.1 g, 6.17 mmol) in DCM (11 mL) was added NBS (1.10 g, 6.17 mmol) in portions at 0 °C. The reaction mixture was stirred for 6 h at room temperature. The resulting mixture was quenched with sat. sodium hyposulfite (aq.) (100 mL) at room temperature. The resulting mixture was extracted with CH 2 Cl 2 (3 x 100 mL). The combined organic layers were washed with brine (2 x 100 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in Water (0.1% TFA), 5% to 95% gradient in 30 min; detector, UV 220 nm. The fractions containing the desired product were combined and concentrated to afford 4-bromo-1-(1,1,1-trifluoro-2-methylpropan-2-yl)pyrazole (1.5 g, 94%) as a light yellow oil. MS ESI calculated for C 7 H 8 BrF 3 N 2 [M+H] + , 256.98, 258.98, found 256.90, 258.90; 1 H NMR (400 MHz, DMSO-d6) δ 8.40-8.39 (m, 1H), 7.71-7.70 (m, 1H), 1.81 (s, 6H). [00514] Step 6: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]aniline (150 mg, 0.46 mmol), Pd(dppf)Cl 2 ·CH 2 Cl 2 (74 mg, 0.09 mmol), bis(lambda2- cobalt(2+)) octakis(methanidylidyneoxidanium) (47 mg, 0.14 mmol) and 4-bromo-1-(1,1,1- trifluoro-2-methylpropan-2-yl)pyrazole (236 mg, 0.92 mmol) in dioxane (2 mL) was added TEA (279 mg, 2.76 mmol). The reaction mixture was degassed with nitrogen atmosphere for three times and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (3/1/1) to afford crude product. The crude product was purified by reversed-phase flash chromatography with the following (Conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH 4 HCO 3 ), 5% to 95% gradient in 30 min; detector, UV 254 nm) to afford the title compound (127.2 mg, 51%) as a white solid. MS ESI calculated for C 26 H 26 F 4 N 6 O 2 [M+H] + , 531.21, found 531.15; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.83 (s, 1H), 8.76-8.75 (m, 1H), 8.16 (d, J=1.2 Hz, 1H), 8.13-8.12 (m, 1H), 7.90 (d, J=1.2 Hz, 1H), 7.56 (d, J=8 Hz, 1H), 7.52 (d, J=1.2 Hz, 1H), 7.30 (d, J=11.6 Hz, 1H), 6.38 (d, J=1.6 Hz, 1H), 3.81 (t, J=4.4 Hz, 4H), 3.55 (t, J=4.8 Hz, 4H), 2.30 (s, 3H), 1.87 (s, 6H). [00515] Example 137: 1-(tert-Butyl)-5-fluoro-N-(6-methyl-5-(8-morpholinoimidazo[1 ,2-a]pyridin-6- yl)pyridin-3-yl)-1H-pyrazole-4-carboxamide [00516] Step 1: To a stirred solution of 4-{6-chloroimidazo[1,2-a]pyridin-8-yl}morpholine (3 g, 12.62 mmol), bis(pinacolato)diboron (4.81 g, 18.93 mmol) and potassium acetate (3.72 g, 37.86 mmol) in dioxane (30 mL) was added Pd(dppf)Cl2·CH2Cl2 (1.03 g, 1.26 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 100 °C. The resulting mixture was filtered, the filter cake was washed with ethyl acetate (3 x 100 mL). The filtrate was concentrated under reduced pressure to afford 4-[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2- yl)imidazo[1,2-a]pyridin-8-yl]morpholine (4 g, crude) as a black oil. MS ESI calculated for C17H24BN3O3. [M + H] + , 330.19, found 329.85. [00517] Step 2: To a stirred mixture of 5-bromo-6-methylpyridin-3-amine (300 mg, 1.60 mmol) and 4- [6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2- a]pyridin-8-yl]morpholine (1.58 g, 1.60 mmol, 33%) in dioxane (4 mL) and water (1 mL) were added Pd(PPh 3 )Cl 2 (112.58 mg, 0.16 mmol) and sodium carbonate (509.99 mg, 4.81 mmol) in portions. The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 80 ° C. The resulting mixture was diluted with water (20 mL). The resulting mixture was diluted with water (15 mL) and extracted with ethyl acetate (3 x 20 mL). The combined organic layers were washed with brine (3 x 30 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with DCM/ MeOH (20/1). The fractions containing the desired product were combined and concentrated to afford 6-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6-yl]pyr idin-3- amine (400 mg, 80%) as a dark grey solid. MS ESI calculated for C 17 H 19 N 5 O . [M + H] + , 310.16, found 310.10. [00518] Step 3: To a stirred mixture of 6-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6- yl]pyridin-3-amine (100 mg, 0.32 mmol), bis(lambda2-cobalt(2+)) octakis(methanidylidyneoxidanium) (33.16 mg, 0.09 mmol) and Pd(dppf)Cl 2 ·CH 2 Cl 2 (52.66 mg, 0.06 mmol) in dioxane (1 mL) were added triethylamine (196.25 mg, 1.94 mmol) and 4-bromo- 1-(tert-butyl)-5-fluoro-1H-pyrazole (142.92 mg, 0.64 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was diluted with water (10 mL) and extracted with ethyl acetate (3 x 10 mL). The combined organic layers were washed with brine (3 x 20 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with DCM/MeOH (10/1). The residue was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: acetonitrile; Flow rate: 60 mL/min; Gradient: 16% B to 26% B in 10 min, 26% B; Wavelength: 220 nm; RT1: 9.45 min. The fractions containing the desired product were combined and concentrated to afford the title compound (7.7 mg, 5%) as an off-white solid. MS ESI calculated for C25H28FN7O2. [M + H] + , 478.23, found 478.20; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.03 (s, 1H), 8.77 (d, J = 2.5 Hz, 1H), 8.24 (d, J = 1.4 Hz, 1H), 8.04 (d, J = 2.5 Hz, 2H), 7.92-7.91 (m, 1H), 7.54-7.53 (m, 1H), 6.47- 6.42 (m, 1H), 3.82 (t, J = 4.5 Hz, 4H), 3.57 (t, J = 4.6 Hz, 4H), 2.47 (s, 3H), 1.58 (d, J = 1.5 Hz, 9H). [00519] Example 138: 1-(tert-Butyl)-5-fluoro-N-(5-methyl-4-(8-morpholinoimidazo[1 ,2-a]pyridin-6- yl)pyridin-2-yl)-1H-pyrazole-4-carboxamide
[00520] Step 1: To a stirred mixture of 4-bromo-5-methylpyridin-2-amine (300 mg, 1.60 mmol) and 4- [6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2- a]pyridin-8-yl]morpholine (1.58 g, 1.60 mmol, 33%) in dioxane (4 mL) and water (1 mL) were added Pd(PPh 3 ) 2 Cl 2 (112.58 mg, 0.16 mmol) and sodium carbonate (0.51 g, 4.81 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 80 °C . The resulting mixture was diluted with water (20 mL) and extracted with ethyl acetate (3 x 20 mL). The combined organic layers were washed with brine (3 x 30 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with DCM/MeOH (20/1). The fractions containing the desired product were combined and concentrated to afford 5-methyl-4-[8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]pyridin-2-amine (400 mg, 80%) as a dark grey solid. MS ESI calculated for C17H19N5O [M + H] + , 310.16, found 310.10. [00521] Step 2: To a stirred solution of 5-methyl-4-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6- yl]pyridin-2-amine (100 mg, 0.32 mmol), Pd(dppf)Cl2·CH2Cl2 (26 mg, 0.03 mmol) and 4- bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (143 mg, 0.65 mmol) in dioxane (1 mL) were added bis(lambda2-cobalt(2+)) octakis(methanidylidyneoxidanium) (33 mg, 0.10 mmol) and TEA (98 mg, 0.96 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C . The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (4/3/1) to afford the crude product. The crude product (90 mg) was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 33% B to 43% B in 10 min, 43% B; Wavelength: 220/254 nm; RT1: 10.2 min. The fractions containing the desired product were combined and concentrated to afford the title compound (49.5 mg, 32%) as a white solid. MS ESI calculated for C25H28FN7O2 [M + H] + , 478.23, found 478.15; 1 H NMR (400 MHz, Chloroform-d) δ 8.31-8.29 (m, 1H), 8.25 (d, J = 10.6 Hz, 2H), 7.87-7.86 (m, 2H), 7.69-7.63 (m, 1H), 7.61-7.60 (m, 1H), 6.48 (s, 1H), 4.03 (t, J = 4.8 Hz, 4H), 3.58 (t, J = 4.8 Hz, 4H), 2.32 (s, 3H), 1.68 (d, J = 1.6 Hz, 9H). [00522] Example 140: 1-(Tert-butyl)-N-(2-fluoro-4-methyl-5-(2-methyl-8-morpholino imidazo[1,2- a]pyridin-6-yl)phenyl)-1H-imidazole-4-carboxamide [00523] Step 1: To a stirred solution of 5-bromo-3-(morpholin-4-yl)pyridin-2-amine (2 g, 7.74 mmol) in EtOH (20 mL) was added bromoacetone (2.12 g, 15.49 mmol) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at 80 °C under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (4/3/1). The fractions containing the desired product were combined and concentrated to afford 4-{6-bromo-2- methylimidazo[1,2-a]pyridin-8-yl}morpholine (1 g, 43%) as a yellow solid. MS ESI calculated for C 12 H 14 BrN 3 O [M + H] + , 296.03, 298.03, found 295.95, 297.95; 1 H NMR (400 MHz, Chloroform-d) δ 7.84 (d, J = 1.6 Hz, 1H), 7.23 (d, J = 1.2 Hz, 1H), 6.45-6.44 (m, 1H), 4.00-3.97 (m, 4H), 3.57-3.55 (m, 4H), 2.44 (s, 3H). [00524] Step 2: To a stirred mixture of 4-{6-bromo-2-methylimidazo[1,2-a]pyridin-8-yl}morpholine (1 g, 3.37 mmol) and 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2-yl)aniline (933 mg, 3.71 mmol) in dioxane (10 mL) and H2O (2.5 mL) were added K2CO3 (1.40 g, 10.12 mmol) and Pd(dppf)Cl 2 CH 2 Cl 2 (275 mg, 0.33 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 80 °C. The resulting mixture was diluted with water (50 mL) and extracted with EtOAc (3 x 200 mL). The combined organic layers were washed with brine (3 x 100 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]aniline (400 mg, 34%) as a brown solid. MS ESI calculated for C19H21FN4O [M + H] + , 341.17, found 341.15. [00525] Step 3: To a stirred mixture of 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]aniline (100 mg, 0.29 mmol) in LiHMDS (1 mL, 1 M) was added ethyl 1-tert- butylimidazole-4-carboxylate (58 mg, 0.29 mmol) in THF (0.5 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with NH4Cl (aq.) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (3 x 20 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by Prep-TLC, eluted with PE/EA/EtOH (4/3/1) to afford the crude product. The crude product was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 0.1% FA), 10% to 50% gradient in 20 min; detector, UV 254 nm. The fractions containing the desired product were combined to afford the title compound (37.8 mg, 26%) as a white solid. MS ESI calculated for C 27 H 31 FN 6 O 2 [M + H] + , 491.25, found 491.20; 1 H NMR (400 MHz, Chloroform- d) δ 9.20 (s, 1H), 8.42 (d, J = 8.0 Hz, 1H), 7.79 (d, J = 1.2 Hz, 1H), 7.72-7.71 (m, 1H), 7.63 (d, J = 1.2 Hz, 1H), 7.31-7.29 (m, 1H), 7.08 (d, J = 11.4 Hz, 1H), 6.45 (s, 1H), 4.04-4.00 (m, 4H), 3.51-3.47 (m, 4H), 2.54 (s, 3H), 2.27 (s, 3H), 1.63 (s, 9H). [00526] Example 141: 1-Tert-butyl-4-fluoro-N-{2-fluoro-4-methyl-5-[8-(morpholin-4 -yl)imidazo[1,2- a]pyridin-6-yl]phenyl}pyrazole-3-carboxamide [00527] Step 1: To a stirred solution of 1H-pyrazole-3-carboxylic acid (4.5 g, 40.15 mmol) in tert- Butanol (50 mL) was added H 2 SO 4 (2.18 mL, 40.15 mmol, 98%) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at 100 °C under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. The residue was dissolved in water (50 mL) and extracted with dichlormethane (3 x 50 mL). After filtration, the filtrate was concentrated under reduced pressure to afford 1-tert-butylpyrazole-3-carboxylic acid (5.6 g, crude) as an off-white solid. MS ESI calculated for C8H12N2O2 [M + H] + , 169.09, found 169.10. [00528] Step 2: To a stirred solution of 1-tert-butylpyrazole-3-carboxylic acid (5.5 g, 32.70 mmol) in ethyl alcohol (55 mL) was added H 2 SO 4 (0.18 mL, 3.27 mmol, 98%) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at 80 °C under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. The residue was neutralized to pH 7 with saturated sodium bicarbonate (aq.). and extracted with dichlormethane (3 x 20 mL). The combined organic layers were dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (5/1). The fractions containing the desired product were combined and concentrated to afford ethyl 1-tert-butylpyrazole-3- carboxylate (4 g, 62%) as a light yellow oil. MS ESI calculated for C 10 H 16 N 2 O 2. [M + H] + , 197.12, found 197.10. [00529] Step 3: To a stirred mixture of ethyl 1-tert-butylpyrazole-3-carboxylate (2 g, 10.19 mmol) in acetonitrile (25 mL) was added Select fluor (3.97 g, 11.21 mmol). The reaction mixture was stirred for 72 h at 80 °C under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. The residue was dissolved in dichloromethane (20 mL). The resulting mixture was filtered, the filter cake was washed with dichloromethane (3 x 20 mL). The filtrate was concentrated under reduced pressure. The residue was purified by reverse phase Flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 40 g; Eluent A: water (Plus 0.05% TFA); Eluent B: acetonitrile; Gradient: 25% to 45% B in 25 min; Flow rate: 35 mL/min; Detector: 254 nm. The fractions containing the desired product were combined and concentrated to afford ethyl 1-tert-butyl-4-fluoropyrazole-3-carboxylate (690 mg, 31%) as a light yellow oil. MS ESI calculated for C 10 H 15 FN 2 O 2. [M + H] + , 215.11, found 215.05; 1H NMR (400 MHz, Chloroform-d) δ 7.44 (d, J = 4.8 Hz, 1H), 4.41 (q, J = 7.1 Hz, 2H), 1.59 (s, 9H), 1.39 (t, J = 7.1 Hz, 3H). [00530] Step 4: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (100 mg, 0.31 mmol) in LiHMDS (1.5 mL) was added ethyl 1-tert-butyl-4- fluoropyrazole-3-carboxylate (66.34 mg, 0.31 mmol) in THF (1.5 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature under nitrogen atmosphere. The reaction was quenched by the addition of sat. NH 4 Cl (aq.) (10 mL) and extracted with EtOAc (3 x 10 mL). The combined organic layers were washed with brine (3 x 10 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/3) to afford the crude product. The crude product was purified by trituration with acetone (5 mL). The precipitated solids were collected by filtration and washed with acetone (3 x 2 mL) to afford the title compound (73.2 mg, 48%) as a white solid. MS ESI calculated for C26H28F2N6O2 [M + H] + , 495.22, found 495.20; 1 H NMR (400 MHz, DMSO-d6) δ 9.47 (s, 1H), 8.22 (d, J = 4.4 Hz, 1H), 8.16 (d, J = 1.4 Hz, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.73 (d, J = 8.0 Hz, 1H), 7.52 (d, J = 1.2 Hz, 1H), 7.30 (d, J = 11.6 Hz, 1H), 6.38 (d, J = 1.6 Hz, 1H), 3.81 (t, J = 4.6 Hz, 4H), 3.56 (t, J = 4.6 Hz, 4H), 2.30 (s, 3H), 1.57 (s, 9H). [00531] Example 142: 1-Tert-butyl-4-fluoro-N-{4-methyl-3-[8-(morpholin-4-yl)imida zo[1,2-a]pyridin- 6-yl]phenyl}pyrazole-3-carboxamide [00532] Step 1: To a stirred solution of 4-methyl-3-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6- yl]aniline (100 mg, 0.32 mmol) in LiHMDS (1.5 mL) was added ethyl 1-tert-butyl-4- fluoropyrazole-3-carboxylate (69.47 mg, 0.32 mmol) in THF (1 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with sat. NH4Cl (aq.) at room temperature. The resulting mixture was extracted with EA (3 x 20 mL). The combined organic layers were washed with brine (3 x 10 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by Prep-TLC, eluted with DCM/MeOH (20/1) to afford the crude product. The crude product was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: acetonitrile; Flow rate: 60 mL/min; Gradient: 36% B to 46% B in 10 min, 46% B; Wavelength: 220/254 nm; RT1: 10.18 min. The fractions containing the desired product were combined and concentrated to afford the title compound (83.6 mg, 54%) as an off-white solid. MS ESI calculated for C26H29FN6O2. [M + H] + , 477.23, found 477.25; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.76 (s, 1H), 8.22-8.14 (m, 2H), 7.91 (d, J = 1.2 Hz, 1H), 7.79-7.71 (m, 2H), 7.52 (d, J = 1.2 Hz, 1H), 7.29 (d, J = 8.2 Hz, 1H), 6.40 (d, J = 1.5 Hz, 1H), 3.85 (t, J = 4.7 Hz, 4H), 3.56 (t, J = 4.7 Hz, 4H), 2.27 (s, 3H), 1.57 (s, 9H). [00533] Example 143: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(2-methyl-8- morpholinoimidazo[1,2-a]pyridin-6-yl)phenyl)-1H-pyrazole-4-c arboxamide
[00534] Step 1: To a stirred mixture of 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]aniline (100 mg, 0.29 mmol), TEA (0.12 mL, 0.88 mmol) and bis(lambda2- cobalt(2+)) octakis(methanidylidyneoxidanium) (30 mg, 0.09 mmol) in dioxane (1 mL) were added 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (130 mg, 0.58 mmol) and Pd(dppf)Cl 2 ·CH 2 Cl 2 (48 mg, 0.06 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 80 °C. The resulting mixture was diluted with water (20 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (3 x 10 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1) to afford the crude product. The crude product was purified by reversed-phase flash chromatography (Conditions: column, C18 silica gel; mobile phase, MeCN in Water (Plus 0.1% FA), 10% to 50% gradient in 10 min; detector, UV 254 nm) to afford the title compound (12.7 mg, 8%) as a white solid. MS ESI calculated for C27H30F2N6O2 [M + H] + , 509.24, found 509.25; 1H NMR (400 MHz, Chloroform-d) δ 8.34 (d, J = 8.4 Hz, 1H), 7.84 (d, J = 2.4 Hz, 1H), 7.68- 7.67 (m, 2H), 7.29-7.26 (m, 1H), 7.07 (d, J = 11.6 Hz, 1H), 6.37 (s, 1H), 4.02-4.00 (m, 4H), 3.56-3.53 (m, 4H), 2.49 (s, 3H), 2.27 (s, 3H), 1.68 (d, J = 1.6 Hz, 9H). [00535] Example 148: 1-Tert-butyl-2-fluoro-N-{2-fluoro-4-methyl-5-[2-methyl-8-(mo rpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]phenyl}imidazole-4-carboxamide [00536] Step 1: To a stirred mixture of ethyl 1-tert-butylimidazole-4-carboxylate (300 mg, 1.53 mmol) and sodium bicarbonate (385.25 mg, 4.59 mmol) in acetonitrile (10 mL) was added Selectfluor (2.71 g, 7.65 mmol). The reaction mixture was stirred for 16 h at room temperature under nitrogen atmosphere. The resulting mixture was diluted with water (10 mL) and extracted with ethyl acetate (3 x 10 mL). The combined organic layers were washed with brine (3 x 20 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford ethyl 1-tert-butyl-2-fluoroimidazole-4-carboxylate (100 mg, 30%) as a brown oil. MS ESI calculated for C 10 H 15 FN 2 O 2. [M + H] + , 215.11, found 215.05. [00537] Step 2: To a stirred solution of 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]aniline (100 mg, 0.29 mmol) in LiHMDS (1 mL) was added ethyl 1-tert-butyl-2- fluoroimidazole-4-carboxylate (63 mg, 0.29 mmol) at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 2 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with NH4Cl (aq.) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (3 x 10 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by Prep-HPLC (Conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: MeCN; Flow rate: 60 mL/min; Gradient: 40% B to 50% B in 10 min, 50% B; Wavelength: 220 nm; RT1: 10.52 min). The fractions containing the desired product were combined and concentrated to afford the title compound (5.8 mg, 3%) as a white solid. MS ESI calculated for C 27 H 30 F 2 N 6 O 2 [M + H] + , 509.24, found 509.30; 1 H NMR (400 MHz, Chloroform-d) δ 8.97 (s, 1H), 8.45 (d, J = 8.0 Hz, 1H), 7.73-7.72 (m, 1H), 7.31-7.30 (m, 1H), 7.24-7.22 (m, 1H), 7.07 (d, J = 11.6 Hz, 1H), 6.51 (s, 1H), 4.06-4.02 (m, 4H), 3.50-3.48 (m, 4H), 2.57 (s, 3H), 2.27 (s, 3H), 1.68 (s, 9H). [00538] Example 151: 1-Tert-butyl-N-{4-chloro-2-fluoro-5-[8-(morpholin-4-yl)imida zo[1,2-a]pyridin-6- yl]phenyl}-2-fluoroimidazole-4-carboxamide [00539] Step 1: To a stirred solution of 5-bromo-2-fluoroaniline (5 g, 26.31 mmol) in ACN (50 mL) was added NCS (3.51 g, 26.31 mmol) at room temperature. The reaction mixture was stirred for 16 h at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was diluted with water (100 mL) and extracted with EtOAc (3 x 200 mL). The combined organic layers were washed with brine (3 x 300 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/9). The fractions containing the desired product were combined and concentrated to afford 5-bromo-4-chloro-2-fluoroaniline (4.3 g, 72%) as a red solid. MS ESI calculated for C 6 H 4 BrClFN [M+H] + , 223.92, found 223.90. [00540] Step 2: To a stirred solution of 5-bromo-4-chloro-2-fluoroaniline (200 mg, 0.89 mmol), Na 2 CO 3 (283.31 mg, 2.67 mmol) and Pd(PPh3)2Cl2 (62.54 mg, 0.08 mmol) in dioxane (2 mL) and H2O (0.4 mL) was added 4-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1, 2-a]pyridin-8- yl)morpholine (888.93 mg, 1.34 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 1 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/9). The fractions containing the desired product were combined and concentrated to afford 4-chloro-2-fluoro-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6-yl]aniline (108.2 mg, 35%) as a yellow solid. MS ESI calculated for C17H16ClFN4O [M+H] + , 347.10, found 347.10; 1H NMR (400 MHz, CDCl 3 ) δ 7.82 (d, J = 1.4 Hz, 1H), 7.65-7.51 (m, 2H), 7.17 (d, J = 10.5 Hz, 1H), 6.81 (d, J = 9.3 Hz, 1H), 6.47 (d, J = 1.4 Hz, 1H), 4.13-3.90 (m, 4H), 3.85 (s, 2H), 3.70- 3.47 (m, 4H). [00541] Step 3: To a stirred solution of 4-chloro-2-fluoro-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]aniline (80 mg, 0.23 mmol) in 1 M LiHMDS in THF (3 mL) was added ethyl 1-tert-butyl-2- fluoroimidazole-4-carboxylate (49.42 mg, 0.23 mmol) in THF (1 mL) dropwise at 0 °C. The reaction mixture was stirred for 2 h at room temperature. The reaction was quenched with sat. NH 4 Cl (aq.) at room temperature. The resulting mixture was extracted with EtOAc (3 x 30 mL). The combined organic layers were washed with brine (30 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (2/3/1) to afford the crude product (100 mg). The crude product (100 mg) was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5μm; Mobile Phase A: water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 40% B to 50% B in 10 min, 50% B; Wavelength: 220/254 nm; RT1: 10.67 min. The fractions containing the desired product were combined and concentrated to afford the title compound (24.8 mg, 20%) as a white solid. MS ESI calculated for C25H25ClF2N6O2 [M+H] + , 515.17, 517.17, found 515.15, 517.15; 1 H NMR (400 MHz, DMSO-d6) δ 9.54 (s, 1H), 8.27 (d, J = 1.4 Hz, 1H), 8.06 (d, J = 8.2 Hz, 1H), 7.95 (d, J = 1.2 Hz, 1H), 7.73-7.66 (m, 2H), 7.54 (d, J = 1.1 Hz, 1H), 6.44 (d, J = 1.5 Hz, 1H), 3.81 (t, J = 4.7 Hz, 4H), 3.56 (t, J = 4.7 Hz, 4H), 1.60 (s, 9H). [00542] Example 153: 1-(tert-Butyl)-N-(5-(8-(3,6-dihydro-2H-pyran-4-yl)imidazo[1, 2-a]pyridin-6-yl)-2- fluoro-4-methylphenyl)-5-fluoro-1H-pyrazole-4-carboxamide [00543] Step 1: To a stirred mixture of 8-bromo-6-chloroimidazo[1,2-a]pyridine (1 g, 4.32 mmol) and 2- (3,6-dihydro-2H-pyran-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxab orolane (1.00 g, 4.75 mmol) in dioxane (10 mL) and water (2.5 mL) were added Pd(PPh 3 ) 2 Cl 2 (303.22 mg, 0.43 mmol) and Na2CO3 (1.37 g, 12.96 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 1 h at 80 °C. The resulting mixture was diluted with water (50 mL) and extracted with ethyl acetate (3 x 50 mL). The combined organic layers were washed with brine (3 x 50 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with DCM/MeOH (20/1). The fractions containing the desired product were combined and concentrated to afford 6-chloro-8-(3,6-dihydro-2H-pyran-4-yl)imidazo[1,2- a]pyridine (0.8 g, 78%) as a light yellow oil. MS ESI calculated for C12H11ClN2O. [M + H] + , 235.06, found 235.00. [00544] Step 2: To a stirred mixture of 6-chloro-8-(3,6-dihydro-2H-pyran-4-yl)imidazo[1,2-a]pyridine (0.8 g, 3.41 mmol) and 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2-yl)aniline (0.86 g, 3.41 mmol) in THF (10 mL) and water (1 mL) were added XPhos Pd G2 (0.27 g, 0.34 mmol) and K 3 PO 4 (1.45 g, 6.82 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 1 h at 80 °C. The resulting mixture was diluted with water (30 mL) and extracted with ethyl acetate (3 x 50 mL). The combined organic layers were washed with brine (3 x 40 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by reverse phase Flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 80 g; Eluent A: water (Plus 0.1% TFA); Eluent B: acetonitrile; Gradient: 10% - 30% B in 25 min; Flow rate: 50 mL/min; Detector: 254 nm. The fractions containing the desired fractions were combined and concentrated to afford 5-[8-(3,6-dihydro-2H-pyran-4-yl)imidazo[1,2-a]pyridin-6- yl]-2-fluoro-4-methylaniline (1 g, 90%) as a dark red solid. MS ESI calculated for C 19 H 18 FN 3 O . [M + H] + , 324.14, found 324.10; 1 H NMR (400 MHz, DMSO-d6) δ 8.77-8.72 (m, 1H), 8.30 (d, J = 2.0 Hz, 1H), 8.14 (d, J = 2.0 Hz, 1H), 7.71-7.69 (m, 1H), 7.03 (d, J = 12.3 Hz, 1H), 6.75 (d, J = 9.1 Hz, 1H), 6.63-6.61 (m, 1H), 4.31(q, J = 2.8 Hz, 2H), 3.88 (t, J = 5.4 Hz, 2H), 2.59-2.56 (m, 2H), 2.13 (s, 3H). 19 F NMR (376 MHz, DMSO) δ -74.22. [00545] Step 3: To a stirred mixture of 5-[8-(3,6-dihydro-2H-pyran-4-yl)imidazo[1,2-a]pyridin-6-yl]- 2- fluoro-4-methylaniline (100 mg, 0.31 mmol) and Pd(dppf)Cl 2 ·DCM (50.38 mg, 0.06 mmol) in dioxane (2 mL) were added 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (136.73 mg, 0.62 mmol) and triethylamine (187.76 mg, 1.85 mmol) dropwise at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with DCM/MeOH (10/1) to afford the crude product. The crude product was further purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: acetonitrile; Flow rate: 60 mL/min; Gradient: 43% B to 53% B in 10 min, 53% B; Wavelength: 220/254 nm; RT1: 9.12 min. The fractions containing the desired product were combined and concentrated under reduced pressure to afford the title compound (53.8 mg, 35%) as an off-white solid. MS ESI calculated for C 27 H 27 F 2 N 5 O 2. [M + H] + , 492.21, found 492.20; 1 H NMR (400 MHz, DMSO-d6) δ 9.71 (s, 1H), 8.52 (d, J = 1.6 Hz, 1H), 7.99 (dd, J = 8.5, 1.8 Hz, 2H), 7.73 (d, J = 3.0 Hz, 1H), 7.62 (d, J = 1.2 Hz, 1H), 7.56 (d, J = 7.9 Hz, 1H), 7.31 (d, J = 11.4 Hz, 1H), 7.14 (d, J = 1.6 Hz, 1H), 4.34 (q, J = 2.7 Hz, 2H), 3.87 (t, J = 5.4 Hz, 2H), 2.64- 2.62 (m, 2H), 2.30 (s, 3H), 1.57 (s, 9H). [00546] Example 159: 1-(tert-Butyl)-N-(2,3-difluoro-4-methyl-5-(8-morpholinoimida zo[1,2-a]pyridin-6- yl)phenyl)-5-fluoro-1H-pyrazole-4-carboxamide [00547] Step 1: To a stirred solution of 2,3-difluoro-4-methylbenzoic acid (800 mg, 4.65 mmol), H2O (3 mL), HNO 3 (3.9 mL) and Br 2 (0.5 mL, 9.30 mmol) in CH 3 COOH (15 mL) was added AgNO 3 (1.58 g, 9.30 mmol) in H 2 O (3 mL) dropwise at 0 °C. The reaction mixture was stirred for 3 h at room temperature. The resulting mixture was filtered, the filter cake was washed with CH3COOH (3 x 20 mL). The filtrate was concentrated under reduced pressure. The residue was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, acetonitrile in water, 5% to 95% gradient in 25 min; detector, UV 208/254 nm. The fractions containing the desired product were combined and concentrated to afford 5- bromo-2,3-difluoro-4-methylbenzoic acid (940 mg, 67%) as a light brown solid. MS ESI calculated for C 8 H 5 BrF 2 O 2 [M - H] + , 248.94, 250.94, found 248.90, 250.90; 1 H NMR (400 MHz, DMSO-d6) δ 13.75 (s, 1H), 7.84 (dd, J = 6.4, 2.4 Hz, 1H), 2.35 (d, J = 2.8 Hz, 3H). 19 F NMR (376 MHz, DMSO-d 6 ) δ -134.39 (1F), - 136.95 (1F). [00548] Step 2: To a stirred solution of 5-bromo-2,3-difluoro-4-methylbenzoic acid (940 mg, 3.75 mmol) and TEA (416 mg, 4.12 mmol) in Toluene (10 mL) was added DPPA (1.13 g, 4.12 mmol) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 1 h at 120 °C under nitrogen atmosphere. To the above mixture was added t-BuOH (2 mL) dropwise at room temperature. The reaction mixture was stirred for additional 3 h at 120 °C. The resulting mixture was quenched with water (100 mL) and extracted with ethyl acetate (3 x 60 mL). The combined organic layers were washed with saturated brine (50 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, acetonitrile in water (Plus 10 mmol/L NH 4 HCO 3 ), 5% to 95% gradient in 25 min; detector, UV 233/254 nm. The fractions containing the desired product were combined and concentrated to afford tert-butyl N-(5-bromo-2,3-difluoro-4- methylphenyl)carbamate (290 mg, 15%) as a light brown solid. MS ESI calculated for C 12 H 14 BrF 2 NO 2 [M - H] + , 320.02, 322.02, found 319.95, 321.95; 1 H NMR (400 MHz, Chloroform-d) δ 8.17 (d, J = 6.4 Hz, 1H), 6.65 (s, 1H), 2.31 (d, J = 2.8 Hz, 3H), 1.55 (s, 9H). [00549] Step 3: To a stirred mixture of tert-butyl N-(5-bromo-2,3-difluoro-4-methylphenyl)carbamate (290 mg, 0.90 mmol), 4-[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1, 2-a]pyridin- 8-yl]morpholine (889 mg, 2.70 mmol, 33%) and K 2 CO 3 (373 mg, 2.70 mmol) in H 2 O (1 mL) and dioxane (4 mL) was added Pd(dppf)Cl2·CH2Cl2 (73 mg, 0.09 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 80 °C. The resulting mixture was diluted with water (50 mL) and extracted with ethyl acetate (3 x 50 mL). The combined organic layers were washed with brine (50 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (8/4/1). The fractions containing the desired product were combined and concentrated to afford tert-butyl N-{2,3-difluoro-4- methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6-yl]pheny l}carbamate (120 mg, 27%) as a light brown solid. MS ESI calculated for C23H26F2N4O3 [M - H] + , 443.20, found 443.05; 1 H NMR (400 MHz, Chloroform-d) δ 7.87 (d, J = 7.2 Hz, 1H), 7.82-7.80 (m, 1H), 7.77-7.73 (m, 1H), 7.62-7.61 (m, 1H), 6.76-6.73 (m, 1H), 6.56 (s, 1H), 4.06 (t, J = 4.6 Hz, 4H), 3.49 (t, J = 4.6 Hz, 4H), 2.19 (d, J = 2.4 Hz, 3H), 1.54 (s, 9H). [00550] Step 4: To a stirred solution of tert-butyl N-{2,3-difluoro-4-methyl-5-[8-(morpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]phenyl}carbamate (120 mg, 0.27 mmol) in DCM (2 mL) was added HCl (gas) in EtOAc (2 mL) (4 M) dropwise at 0 °C. The reaction mixture was stirred for 2 h at room temperature. The resulting mixture was basified to pH 8 with saturated NaHCO3 (aq.). The resulting mixture was extracted with ethyl acetate (3 x 30 mL). The combined organic layers were washed with brine (30 mL), dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (4/3/1). The fractions containing the desired product were combined and concentrated to afford 2,3-difluoro-4-methyl-5-[8-(morpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]aniline (85 mg, 91%) as a light brown solid. MS ESI calculated for C18H18F2N4O [M + H ] + , 345.14, found 345.05; 1 H NMR (400 MHz, Chloroform-d) δ 7.72 (d, J = 1.2 Hz, 1H), 7.67-7.64 (m, 1H), 7.58 (d, J = 1.2 Hz, 1H), 6.51 (dd, J = 8.0, 2.0 Hz, 1H), 6.40-6.36 (m, 1H), 4.03-4.01 (m, 4H), 3.81 (s, 2H), 3.56-3.54 (m, 4H), 2.12 (d, J = 2.4 Hz, 3H). [00551] Step 5: To a stirred mixture of 2,3-difluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]aniline (80 mg, 0.23 mmol), Pd(dppf)Cl 2 ·CH 2 Cl 2 (38 mg, 0.05 mmol) and bis(lambda2-cobalt(2+)) octakis(methanidylidyneoxidanium) (24 mg, 0.07 mmol) in dioxane (1 mL) were added TEA (141 mg, 1.39 mmol) and 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (103 mg, 0.46 mmol). The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (4/3/1) to afford the crude product. The crude product (70 mg) was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: MeCN; Flow rate: 60 mL/min; Gradient: 43% B to 53% B in 10 min, 53% B; Wavelength: 220 nm; RT1: 9.02 min. The fractions containing the desired product were combined and concentrated to afford the title compound (23.7 mg, 20%) as an off-white solid. MS ESI calculated for C 26 H 27 F 3 N 6 O 2 [M + H] + , 513.21, found 513.25; 1 H NMR (400 MHz, Chloroform-d) δ 8.16 (dd, J = 6.8, 1.6 Hz, 1H), 7.87 (d, J = 0.8 Hz, 1H), 7.78 (d, J = 0.8 Hz, 1H), 7.68-7.66 (m, 1H), 7.64-7.60 (m, 1H), 7.57 (d, J = 0.8 Hz, 1H), 6.37 (s, 1H), 4.02-4.00 (m, 4H), 3.59-3.57 (m, 4H), 2.24 (d, J = 2.8 Hz, 3H), 1.68 (d, J = 1.6 Hz, 9H). [00552] Example 160: 1-Tert-butyl-5-fluoro-N-{2-fluoro-4-methyl-5-[8-(morpholin-4 -yl)imidazo[1,2- a]pyridin-6-yl]phenyl}imidazole-4-carboxamide [00553] Step 1: To a stirred solution of ethyl 1-tert-butylimidazole-4-carboxylate (500 mg, 2.54 mmol) in ACN (10 mL) was added selectfluor (7.2 g, 20.38 mmol) in portions at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was dissolved in DCM (20 mL). The resulting mixture was filtered, the filter cake was washed with DCM (3 x 10 mL). The filtrate was concentrated under reduced pressure. The residue was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, acetonitrile in water (Plus 0.1% TFA), 5% to 95% gradient in 25 min; detector, UV 237/254 nm. The fractions containing the desired product were combined and concentrated to afford ethyl 1- (tert-butyl)-5-fluoro-1H-imidazole-4-carboxylate (70 mg, 2%) as a light-yellow oil. MS ESI calculated for C10H15FN2O2. [M + H] + , 215.11, found 215.09. [00554] Step 2: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (110 mg, 0.34 mmol) in 1 M LiHMDS in THF (1 mL) was added ethyl 1-(tert- butyl)-5-fluoro-1H-imidazole-4-carboxylate (72 mg, 0.38 mmol) in THF (0.5 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 2 h at room temperature. The resulting mixture was quenched with NH 4 Cl (20 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (3 x 40 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 0.1% FA), 10% to 50% gradient in 10 min; detector, UV 254 nm to afford the crude product. The crude product (50 mg) was further purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: MeCN; Flow rate: 60 mL/min; Gradient: 40% B to 50% B in 10 min, 50% B; Wavelength: 220 nm. The fractions containing the desired product were combined and concentrated to afford title compound (5 mg, 3%) as a white solid. MS ESI calculated for C26H28F2N6O2 [M + H] + , 495.22, found 495.20; 1 H NMR (400 MHz, CDCl3) δ 8.81 (d, J = 2.4 Hz, 1H), 8.38 (d, J = 8.0 Hz, 1H), 7.78 (d, J = 1.6 Hz, 1H), 7.63 (s, 1H), 7.56 (d, J = 1.2 Hz, 1H), 7.47 (s, 1H), 7.07 (d, J = 11.6 Hz, 1H), 6.43-6.41 (m, 1H), 4.02-4.00 (m, 4H), 3.59-3.57 (m, 4H), 2.28 (s, 3H), 1.63 (s, 9H). [00555] Example 162: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(7-morpholino pyrazolo[1,5- a]pyridin-5-yl)phenyl)-1H-pyrazole-4-carboxamide [00556] Step 1: To a stirred mixture of 5-chloro-7-iodopyrazolo[1,5-a]pyridine (900 mg, 3.23 mmol) in THF (10 mL) were added LiHMDS (12 mL, 11.31 mmol), XPhos Pd G2 (102 mg, 0.13 mmol) and morpholine (225 mg, 2.59 mmol) 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at 60 °C under nitrogen atmosphere. The resulting mixture was quenched by the addition of sat. NH 4 Cl (aq.) (20 mL) at room temperature. The resulting mixture was extracted with EtOAc (3 x 30 mL). The combined organic layers were washed with brine (3 x 30 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (3/1). The fractions containing the desired product were combined and concentrated to afford 4- {5-chloropyrazolo[1,5-a]pyridin-7-yl}morpholine (117 mg, 15%) as a brown oil. MS ESI calculated for C11H12ClN3O [M + H] + , 238.07, found 238.15; 1 H NMR (300 MHz, Chloroform- d) δ 7.98 (d, J = 2.1 Hz, 1H), 7.28 (d, J = 2.1 Hz, 1H), 6.49 (d, J = 2.1 Hz, 1H), 6.15 (d, J = 2.1 Hz, 1H), 4.06-3.97 (m, 4H), 3.54-3.44 (m, 4H). [00557] Step 2: To a stirred mixture of 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2- yl)aniline (174 mg, 0.70 mmol) and K 3 PO 4 (196 mg, 0.93 mmol) in THF (2 mL) and H 2 O (0.2 mL) were added XPhos Pd G2 (36 mg, 0.05 mmol) and 4-{5-chloropyrazolo[1,5-a]pyridin-7- yl}morpholine (110 mg, 0.46 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 80 °C. The resulting mixture was diluted with water (10 mL). The resulting mixture was diluted with water (10 mL) and extracted with EtOAc (3 x 20 mL). The combined organic layers were washed with brine (3 x 20 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4- methyl-5-[7-(morpholin-4-yl)pyrazolo[1,5-a]pyridin-5-yl]anil ine (130 mg, 86%) as a brown solid. MS ESI calculated for C 18 H 19 FN 4 O [M + H] + , 327.15, found 327.20; 1 H NMR (400 MHz, Chloroform-d) δ 8.03 (d, J = 2.2 Hz, 1H), 7.16 (d, J = 1.6 Hz, 1H), 6.97 (d, J = 11.6 Hz, 1H), 6.86 (d, J = 8.8 Hz, 1H), 6.55 (d, J = 2.2 Hz, 1H), 6.12 (d, J = 1.6 Hz, 1H), 4.07-4.00 (m, 4H), 3.50-3.45 (m, 4H), 2.22 (s, 3H). [00558] Step 3: To a stirred solution of 2-fluoro-4-methyl-5-[7-(morpholin-4-yl)pyrazolo[1,5-a]pyridi n- 5-yl]aniline (73 mg, 0.22 mmol) and bis(lambda2-cobalt(2+)) octakis(methanidylidyneoxidanium) (23 mg, 0.07 mmol) in dioxane (0.5 mL) were added Pd(dppf)Cl 2 ·CH 2 Cl 2 (36 mg, 0.05 mmol), TEA (136 mg, 1.34 mmol) and 4-bromo-1-(tert- butyl)-5-fluoro-1H-pyrazole (99 mg, 0.45 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by Prep-TLC, eluted with PE/EA (1:1) to afford the crude product. The crude product (80 mg) was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 48% B to 58% B in 10 min, 58% B; Wavelength: 220 nm; RT1: 9.42 min. The fractions containing the desired product were combined and concentrated to afford the title compound (31.1 mg, 28%) as a white solid. MS ESI calculated for C26H28F2N6O2 [M + H] + , 495.22, found 495.20; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.69 (s, 1H), 8.05 (d, J = 2.4 Hz, 1H), 8.00 (d, J = 2.4 Hz, 1H), 7.55 (d, J = 8.0 Hz, 1H), 7.34-7.24 (m, 2H), 6.65 (d, J = 2.4 Hz, 1H), 6.23 (d, J = 1.6 Hz, 1H), 3.84 (t, J = 4.6 Hz, 4H), 3.44 (t, J = 4.4 Hz, 4H), 2.31 (s, 3H), 1.58 (d, J = 1.6 Hz, 9H). [00559] Example 163: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(8-(tetrahydr o-2H-pyran-4- yl)imidazo[1,2-a]pyridin-6-yl)phenyl)-1H-pyrazole-4-carboxam ide
[00560] Step 1: To a stirred solution of 5-[8-(3,6-dihydro-2H-pyran-4-yl)imidazo[1,2-a]pyridin-6-yl]- 2- fluoro-4-methylaniline (300 mg, 0.93 mmol) in MeOH (3 mL) was added Pd/C (60 mg) in portions at room temperature under nitrogen atmosphere. The resulting mixture was degassed with hydrogen for three times and stirred for 16 h at room temperature. The resulting mixture was filtered and the filter cake was washed with MeOH (3 x 5 mL). The filtrate was concentrated under reduced pressure to afford 2-fluoro-4-methyl-5-[8-(oxan-4-yl)imidazo[1,2- a]pyridin-6-yl]aniline (200 mg, crude) as an off-white solid. The crude product was directly used to next step without further purification. MS ESI calculated for C 19 H 20 FN 3 O . [M + H] + , 326.16, found 326.15. [00561] Step 2: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(oxan-4-yl)imidazo[1,2-a]pyridin-6- yl]aniline (200 mg, 0.62 mmol), Co2(CO)8 (63.05 mg, 0.18 mmol) and Pd(dppf)Cl2·DCM (100.14 mg, 0.12 mmol) in dioxane (4 mL) were added triethylamine (373.19 mg, 3.69 mmol) and 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (271.77 mg, 1.23 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with DCM/MeOH (10/1) to afford the crude product. The crude product was further purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 40% B to 50% B in 10 min, 50% B; Wavelength: 250 nm; RT1: 9.98 min. The fractions containing the desired fractions were combined and concentrated to afford the title compound (63.3 mg, 20%) as an off-white solid. MS ESI calculated for C 27 H 29 F 2 N 5 O 2. [M + H] + , 494.23, found 494.20; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.70 (s, 1H), 8.45 (d, J = 1.7 Hz, 1H), 8.00 (d, J = 2.5 Hz, 1H), 7.96 (d, J = 1.3 Hz, 1H), 7.60 (d, J = 1.2 Hz, 1H), 7.54 (d, J = 7.9 Hz, 1H), 7.29 (d, J = 11.4 Hz, 1H), 7.04 (d, J = 1.7 Hz, 1H), 4.00-3.98 (m, 2H), 3.57-3.44(m, 3H), 2.29 (s, 3H), 1.97-1.89 (m, 4H), 1.57 (s, 9H). [00562] Example 164: 1-{Bicyclo[1.1.1]pentan-1-yl}-N-{2-fluoro-4-methyl-5-[8-(mor pholin-4- yl)imidazo[1,2-a]pyridin-6-yl]phenyl}pyrazole-4-carboxamide [00563] Step 1: To a stirred solution of bicyclo[1.1.1]pentan-1-ylhydrazine dihydrochloride (300 mg, 1.75 mmol) and propane, 1,1,3,3-tetramethoxy- (0.29 mL, 1.75 mmol) in ethanol (3 mL) was added hydrochloric acid (0.30 mL, 3.60 mmol) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at 80 °C. The resulting mixture was diluted with water (20 mL) and extracted with ethyl acetate (2 x 30 mL). The combined organic layers were washed with brine (20 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure to afford 1-{bicyclo[1.1.1]pentan-1-yl}pyrazole (180 mg, crude) as a yellow oil. MS ESI calculated for C 8 H 10 N 2 [M + H] + , 135.08, found 135.10. [00564] Step 2: To a stirred solution of 1-{bicyclo[1.1.1]pentan-1-yl}pyrazole (180 mg, 1.34 mmol) and NIS (301.81 mg, 1.34 mmol) in acetic acid (1.8 mL) at room temperature. The reaction mixture was stirred for 1 h at 80 °C. The resulting mixture was diluted with water (20 mL) and extracted with ethyl acetate (2 x 30 mL). The combined organic layers were washed with brine (20 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (9/1). The fractions containing the desired product were combined and concentrated to afford 1- {bicyclo[1.1.1]pentan-1-yl}-4-iodopyrazole (210 mg, 60%) as a light yellow oil. MS ESI calculated for C 8 H 9 IN 2 [M + H] + , 260.98, found 261.00. [00565] Step 3: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (80 mg, 0.25 mmol) and Pd(dppf)Cl2·DCM (39.94 mg, 0.05 mmol) and Co2(CO)8 (25.15 mg, 0.07 mmol) in dioxane (0.8 mL) were added TEA (0.20 mL, 1.44 mmol) and 1- {bicyclo[1.1.1]pentan-1-yl}-4-iodopyrazole (127.50 mg, 0.49 mmol) in dioxane (0.2 mL) dropwise at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with EA to afford the crude product. The crude product was further purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, ACN in water (Plus 10 mmol/L NH4HCO3), 20% to 50% gradient in 30 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 1- {bicyclo[1.1.1]pentan-1-yl}-N-{2-fluoro-4-methyl-5-[8-(morph olin-4-yl)imidazo[1,2-a]pyridin- 6-yl]phenyl}pyrazole-4-carboxamide (79.7 mg, 66%) as a white solid. MS ESI calculated for C27H27FN6O2 [M + H] + , 487.22, found 487.25; 1 H NMR (400 MHz, DMSO-d6) δ 9.73 (s, 1H), 8.42-8.41 (m, 1H), 8.14 (d, J = 1.4 Hz, 1H), 8.02 (s, 1H), 7.89 (d, J = 1.2 Hz, 1H), 7.55 (d, J = 8.0 Hz, 1H), 7.51 (d, J = 1.1 Hz, 1H), 7.27 (d, J = 11.5 Hz, 1H), 6.36 (d, J = 1.5 Hz, 1H), 3.80 (t, J = 4.7 Hz, 4H), 3.54 (t, J = 4.7 Hz, 4H), 2.65 (s, 1H), 2.34-2.27 (m, 9H). [00566] Example 166: N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyri din-6-yl]phenyl}- 2-(pyrrolidin-1-yl)pyridine-4-carboxamide [00567] Step 1: To a stirred mixture of 2-(pyrrolidin-1-yl)pyridine-4-carboxylic acid (150 mg, 0.78 mmol) in T 3 P (1.5 mL, 50% in EA) was added 2-fluoro-4-methyl-5-[8-(morpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]aniline (331.10 mg, 1.01 mmol) in pyridine (1.5 mL) dropwise at room temperature. The reaction mixture was stirred for 2 h at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH4HCO3), 30% to 60% gradient in 20 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (125.3 mg, 32%) as a white solid. MS ESI calculated for C 28 H 29 FN 6 O 2 [M + H] + , 501.23, found 501.20; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.20 (s, 1H), 8.21 (d, J = 5.2 Hz, 1H), 8.16 (d, J = 1.4 Hz, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.52-7.50 (m, 2H), 7.31 (d, J = 11.6 Hz, 1H), 6.98 (d, J = 5.2 Hz, 1H), 6.92 (s, 1H), 6.38 (d, J = 0.8 Hz, 1H), 3.81 (d, J = 4.4 Hz, 4H), 3.56 (t, J = 4.4 Hz, 4H), 3.44-3.40 (m, 4H), 2.31 (s, 3H), 1.99-1.92 (m, 4H). [00568] Example 180: N-(5-(8-(8-Oxa-3-azabicyclo[3.2.1]octan-3-yl)imidazo[1,2-a]p yridin-6-yl)-2- fluoro-4-methylphenyl)-1-(tert-butyl)-5-fluoro-1H-pyrazole-4 -carboxamide [00569] Step 1: To a stirred mixture of 8-bromo-6-chloroimidazo[1,2-a]pyridine (1 g, 4.32 mmol), 8- oxa-3-azabicyclo[3.2.1]octane hydrochloride (0.65 g, 4.32 mmol), t-BuONa (1.66 g, 17.28 mmol) and BINAP (0.27 g, 0.43 mmol) in toluene (10 mL) was added Pd 2 (dba) 3 (0.20 g, 0.22 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 3 h at 95 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH 4 HCO 3 ), 15 % to 95% gradient in 30 min; detector, UV 220 nm. The fractions containing the desired product were combined and concentrated to afford 3-{6-chloroimidazo[1,2-a]pyridin-8-yl}-8-oxa-3- azabicyclo[3.2.1]octane (260 mg, 22%) as an off-white solid. MS ESI calculated for C13H14ClN3O [M + H] + , 264.08, 266.08, found 264.00, 266.00; 1 H NMR (400 MHz, CDCl3) δ 7.82-7.81 (m, 1H), 7.62-7.61 (m, 1H), 7.50-7.49 (m, 1H), 6.35-7.34 (m, 1H), 4.55-4.53 (m, 2H), 4.15-4.12 (m, 2H), 3.16-3.13 (m, 2H), 2.26-2.24 (m, 2H), 2.07-2.04 (m, 2H). [00570] Step 2: To a stirred mixture of 3-{6-chloroimidazo[1,2-a]pyridin-8-yl}-8-oxa-3- azabicyclo[3.2.1]octane (200 mg, 0.76 mmol) and 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl- 1,3,2-dioxaborolan-2-yl)aniline (380.86 mg, 1.52 mmol) in THF (2 mL) and K 3 PO 4 (aq.) (4 mL, 0.5 M) was added XPhos Pd G2 (59.67 mg, 0.08 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (3/1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-(8-{8-oxa-3-azabicyclo[3.2.1]octan-3- yl}imidazo[1,2-a]pyridin-6-yl)aniline (250 mg, 93%) as a brown solid. MS ESI calculated for C 20 H 21 FN 4 O [M + H] + , 353.17, found 353.15; 1 H NMR (400 MHz, CDCl 3 ) δ 7.65-7.60 (m, 2H), 7.51 (d, J = 1.2 Hz, 1H), 6.90 (d, J = 11.8 Hz, 1H), 6.69 (d, J = 9.1 Hz, 1H), 6.21-6.20 (m, 1H), 4.50-4.48 (m, 2H), 4.15-4.12 (m, 2H), 3.66 (s, 2H), 3.09 (d, J = 11.6 Hz, 2H), 2.23 (t, J = 6.4 Hz, 2H), 2.15 (s, 3H), 2.08-1.98 (m, 2H). [00571] Step 3: To a stirred mixture of 2-fluoro-4-methyl-5-(8-{8-oxa-3-azabicyclo[3.2.1]octan-3- yl}imidazo[1,2-a]pyridin-6-yl)aniline (100 mg, 0.28 mmol), Pd(dppf)Cl2·DCM (46.23 mg, 0.06 mmol) and Co2(CO)8 (29.11 mg, 0.09 mmol) in dioxane (1 mL) were added TEA (172.29 mg, 1.70 mmol) and 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (125.46 mg, 0.57 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (2/3/1) to afford the crude product. The crude product (80 mg) was purified by Prep-HPLC with the following conditions Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 44% B to 54% B in 11 min, 54% B; Wavelength: 220 nm; RT1: 10.13 min. The fractions containing the desired product were combined and concentrated to afford the title compound (28.5 mg, 19%) as an off-white solid. MS ESI calculated for C28H30F2N6O2 [M + H] + , 521.24, found 521.25; 1 H NMR (400 MHz, CDCl 3 ) δ 8.33 (d, J = 8.0 Hz, 1H), 7.84 (d, J = 2.8 Hz, 1H), 7.71 (d, J = 2.8 Hz, 1H), 7.67 (s, 1H), 7.60 (d, J = 8.0 Hz, 1H), 7.54-7.52 (m, 1H), 7.07 (d, J = 12 Hz, 1H), 6.25 (s, 1H), 4.52 (m, 2H), 4.18 (d, J = 11.2 Hz, 2H), 3.14-3.10 (m, 2H), 2.28-2.24 (m, 5H), 2.06-2.03 (m, 2H), 1.69 (s, 9H). [00572] Example 181: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(8-morpholino -[1,2,4]triazolo[1,5- a]pyridin-6-yl)phenyl)-1H-pyrazole-4-carboxamide [00573] Step 1: To a stirred mixture of 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2- yl)aniline (1.14 g, 4.52 mmol), Pd(dppf)Cl2·CH2Cl2 (0.74 g, 0.91 mmol) and Co2(CO)8 (0.46 g, 1.34 mmol) in dioxane (10 mL) were added TEA (2.75 g, 27.14 mmol) and 4-bromo-1-(tert- butyl)-5-fluoro-1H-pyrazole (1 g, 4.52 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 48 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue was dissolved in EtOAc (40 mL). The resulting mixture was filtered, the filter cake was washed with EtOAc (3 x 20 mL). The filtrate was concentrated under reduced pressure. The residue was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10mmol/L NH 4 HCO 3 ), 30% to 60% gradient in 20 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 1-(tert- butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl- 1,3,2-dioxaborolan-2-yl)phenyl)- 1H-pyrazole-4-carboxamide (200 mg, 10%) as a light yellow solid. MS ESI calculated for C21H28BF2N3O3. [M + H] + , 420.22, found 420.34. [00574] Step 2: To a stirred mixture of 8-bromo-6-chloro-[1,2,4]triazolo[1,5-a]pyridine (300 mg, 1.29 mmol), morpholine (168.64 mg, 1.94 mmol), K 3 PO 4 (821.78 mg, 3.87 mmol) in 1,4-dioxane (5 mL) were added dppf (213.85 mg, 0.39 mmol) and Pd(OAc) 2 (28.97 mg, 0.13 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (4/3/1). The fractions containing the desired product were combined and concentrated to afford 4-{6-chloro- [1,2,4]triazolo[1,5-a]pyridin-8-yl}morpholine (230.0 mg, 74%) as a light yellow solid. MS ESI calculated for C 10 H 11 ClN 4 O . [M + H] + , 239.06, 241.06, found 239.00, 241.00; 1 H NMR (400 MHz, CDCl3) δ 8.28-8.27 (m, 2H), 6.67-6.66 (m, 1H), 3.99-3.94(m, 4H), 3.64-3.62 (m, 4H). [00575] Step 3: To a stirred mixture of 4-{6-chloro-[1,2,4]triazolo[1,5-a]pyridin-8-yl}morpholine (50 mg, 0.21 mmol), 1-(tert-butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(4,4,5,5-tetr amethyl-1,3,2- dioxaborolan-2-yl)phenyl)-1H-pyrazole-4-carboxamide (87.83 mg, 0.21 mmol) and K 3 PO 4 (88.93 mg, 0.42 mmol) in THF (0.15 mL) and water (0.3 mL) was added 2nd Generation XPhos Precatalyst (16.48 mg, 0.02 mmol) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 40 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with CH2Cl2/MeOH (10/1) to afford the crude product. The crude product was purified by Prep- HPLC with the following conditions: Column: XBridge Shield RP18 OBD Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 50% B to 60% B in 10 min; Wavelength: 220 nm; RT1: 10.77 min. The fractions containing the desired product were combined and concentrated to afford the title compound (22.3 mg, 21%) as a white solid. MS ESI calculated for C 25 H 27 F 2 N 7 O 2. [M + H] + , 496.22, found 496.20; 1 H NMR (400 MHz, DMSO-d6) δ 9.71 (s, 1H), 8.51-8.43 (m, 2H), 8.01 (d, J = 2.5 Hz, 1H), 7.57 (d, J = 7.9 Hz, 1H), 7.30 (d, J = 11.5 Hz, 1H), 6.74 (d, J = 1.4 Hz, 1H), 3.82 (t, J = 4.8 Hz, 4H), 3.58 (t, J = 4.8 Hz, 4H), 2.30 (s, 3H), 1.57 (s, 9H). [00576] Example 183: 2-Tert-butyl-N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imida zo[1,2-a]pyridin- 6-yl]phenyl}-1,3-oxazole-5-carboxamide
[00577] Step 1: To a stirred solution of pivalamide (5 g, 49.43 mmol) and ethyl 2-chloro-3- oxopropanoate (7.44 g, 49.43 mmol) in EtOH (50 mL) was added MgSO4 (17.85 g, 148.30 mmol). The reaction mixture was stirred for 16 h at 80 °C under nitrogen atmosphere. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (10/1) to afford the crude product. The crude product was purified by reverse phase Flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 120 g; Eluent A: water (Plus 10 mmol/L NH 4 HCO 3 ); Eluent B: ACN; Gradient: 25% - 95% B in 25 min; Flow rate: 60 mL/min; Detector: 220/254 nm. The fractions containing the desire product were combined and concentrated to afford ethyl 2-tert-butyl-1,3-oxazole-5-carboxylate (1.8 g, 18%) as a brown oil. MS ESI calculated for C10H15NO3 [M + H] + , 198.11, found 198.10; 1 H NMR (400 MHz, Chloroform-d) δ 7.63 (s, 1H), 4.37 (q, J = 7.2 Hz, 2H), 1.43 (s, 9H), 1.38 (t, J = 7.2 Hz, 3H). [00578] Step 2: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]aniline (95 mg, 0.29 mmol) in LiHMDS (1 mL, 1 M in THF) was added ethyl 2-tert-butyl- 1,3-oxazole-5-carboxylate (77 mg, 0.29 mmol) in THF (0.5 mL) at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with MeOH at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with EA to afford the crude product. The crude product (120 mg) was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH4HCO3 + 0.1% NH3.H2O), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 32% B to 62% B in 8 min, 62% B; Wavelength: 254.The fractions containing the desired product were combined and concentrated to afford 2-tert-butyl-N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imida zo[1,2- a]pyridin-6-yl]phenyl}-1,3-oxazole-5-carboxamide (44.9 mg, 32%) as a white solid. MS ESI calculated for C 26 H 28 FN 5 O 3 [M + H] + , 478.22, found 478.30; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.20 (s, 1H), 8.16 (d, J = 1.4 Hz, 1H), 7.92-7.83 (m, 2H), 7.53-7.46 (m, 2H), 7.32 (d, J = 11.6 Hz, 1H), 6.37 (d, J = 1.6 Hz, 1H), 3.83 (t, J = 4.8 Hz, 4H), 3.55 (t, J = 4.8 Hz, 4H), 2.31 (s, 3H), 1.38 (s, 9H). [00579] Example 184: 2-Tert-butyl-N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imida zo[1,2-a]pyridin- 6-yl]phenyl}-1,3-oxazole-4-carboxamide [00580] Step 1: To a stirred solution of ethyl 3-bromo-2-oxopropanoate (3.23 mL, 25.71 mmol) in Ethanol (50 mL) was added pivalamide (2.6 g, 25.71 mmol) at room temperature. The reaction mixture was stirred for 16 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (9/1). The fractions containing the desired product were combined and concentrated to afford ethyl 2-tert-butyl-1,3-oxazole-4-carboxylate (300 mg, 6%) as a light yellow oil. MS ESI calculated for C10H15NO3 [M + H] + , 198.11, found 198.05; 1 H NMR (400 MHz, DMSO-d6) δ 8.73 (s, 1H), 4.27 (q, J = 7.1 Hz, 2H), 1.34 (s, 9H), 1.28 (t, J = 7.1 Hz, 3H). [00581] Step 2: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (100 mg, 0.31 mmol) in Lithium bis(trimethylsilyl)amide (0.92 mL, 0.92 mmol) was added ethyl 2-tert-butyl-1,3-oxazole-4-carboxylate (60.43 mg, 0.31 mmol) in THF (0.1 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature under a nitrogen atmosphere. The resulting mixture was quenched with water/ice and extracted with Ethyl acetate (2 x 20 mL). The combined organic layers were washed with brine (1 x 20 mL), dried over anhydrous Sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/9) to afford the crude product. The crude product was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 + 0.1% NH3.H2O), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 50% B to 70% B in 8 min, 70% B; Wavelength: 254. The fractions containing the desired product were combined and concentrated to afford 2-tert-butyl-N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imida zo[1,2- a]pyridin-6-yl]phenyl}-1,3-oxazole-4-carboxamide (56.7 mg, 38%) as a white solid. MS ESI calculated for C 26 H 28 FN 5 O 3 [M + H] + , 478.22, found 478.25; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.59 (s, 1H), 8.70 (s, 1H), 8.15 (d, J = 1.4 Hz, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.72 (d, J = 8.0 Hz, 1H), 7.51 (d, J = 1.2 Hz, 1H), 7.30 (d, J = 11.8 Hz, 1H), 6.36 (d, J = 1.5 Hz, 1H), 3.80 (t, J = 4.7 Hz, 4H), 3.55 (t, J = 4.7 Hz, 4H), 2.29 (s, 3H), 1.39 (s, 9H). [00582] Example 185: 2-Tert-butyl-N-{4-methyl-3-[8-(morpholin-4-yl)imidazo[1,2-a] pyridin-6- yl]phenyl}-1,3-oxazole-5-carboxamide [00583] Step 1: To a stirred solution 4-methyl-3-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6-yl]ani line (100 mg, 0.32 mmol) in Lithium bis(trimethylsilyl)amide (1.5 mL) was added ethyl 2-tert-butyl- 1,3-oxazole-5-carboxylate (127.91 mg, 0.65 mmol) in THF (1 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with NH 4 Cl (aq.) at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with DCM/MeOH (20/1) to afford the crude product. The crude product was purified by reverse phase Flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 40 g; Eluent A: water (Plus 10 mmol/L NH4HCO3); Eluent B: acetonitrile; Gradient: 40% - 50% B in 25 min; Flow rate: 30 mL/min; Detector: 254 nm. The fractions containing the desired product were combined and concentrated to afford 2-tert-butyl-N-{4-methyl-3-[8-(morpholin-4-yl)imidazo[1,2-a] pyridin-6- yl]phenyl}-1,3-oxazole-5-carboxamide (85.2 mg, 57%) as an off-white solid. MS ESI calculated for C 26 H 29 N 5 O 3. [M + H] + , 460.23, found 460.25; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.20 (s, 1H), 8.16 (d, J = 1.3 Hz, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.84-7.81 (m, 1H), 7.79-7.72 (m, 2H), 7.51 (d, J = 1.2 Hz, 1H), 7.32-7.30 (m, 1H), 6.39 (d, J = 1.5 Hz, 1H), 3.84-3.77 (m, 4H), 3.55 (t, J = 4.7 Hz, 4H), 2.27 (s, 3H), 1.39 (s, 9H). [00584] Example 186: 2-Tert-butyl-N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imida zo[1,2-a]pyridin- 6-yl]phenyl}-1,2,3-triazole-4-carboxamide [00585] Step 1: To a stirred solution of ethyl 2H-1,2,3-triazole-4-carboxylate (2 g, 14.17 mmol) and tert- butanol (2.10 g, 28.34 mmol) in TFA (30 mL) was added H 2 SO 4 (1.39 g, 14.17 mmol) dropwise at room temperature. The resulting mixture was stirred for 16 h at room temperature. The resulting mixture was diluted with water (50 mL) and extracted with CH2Cl2 (3 x 100 mL). The combined organic layers were washed with brine (2 x 50 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford ethyl 2-tert-butyl-1,2,3-triazole-4- carboxylate (300 mg, 10%) as a light-yellow oil. MS ESI calculated for C 9 H 15 N 3 O 2 . [M + H]+, 198.12, found 198.15; 1 H NMR (300 MHz, CDCl3) δ 8.01 (s, 1H), 4.41 (q, J = 7.1 Hz, 2H), 1.70 (s, 9H), 1.40 (t, J = 7.1 Hz, 3H). [00586] Step 2: A solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6-yl]aniline (100 mg, 0.31 mmol) in LiHMDS (3 mL, 2.5 M) was stirred for 30 min at 0 °C under nitrogen atmosphere. To the above mixture was added ethyl 2-tert-butyl-1,2,3-triazole-4-carboxylate (120.9 mg, 0.62 mmol) in THF (3 mL) dropwise over 5 min at 0 °C. The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was quenched with sat. NH 4 Cl (aq.) (5 mL) at room temperature. The resulting mixture was diluted with water (30 mL) and extracted with EtOAc (3 x 20 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 + 0.1% NH 3 . H 2 O), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 39% B to 69% B in 8 min; Wavelength: 254). The fractions containing the desired product were combined and concentrated to afford 2-tert-butyl-N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imida zo[1,2- a]pyridin-6-yl]phenyl}-1,2,3-triazole-4-carboxamide (56.8 mg, 39%) as a white solid. MS ESI calculated for C 25 H 28 FN 7 O 2 . [M + H] + , 478.23, found 478.25; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.15 (s, 1H), 8.27 (s, 1H), 8.18 (d, J = 1.3 Hz, 1H), 7.92 (d, J = 1.2 Hz, 1H), 7.80-7.71 (m, 1H), 7.52 (d, J = 1.2 Hz, 1H), 7.31 (d, J = 8.2 Hz, 1H), 6.41 (d, J = 1.5 Hz, 1H), 3.85-3.78 (m, 4H), 3.59-3.53 (m, 4H), 2.28 (s, 3H), 1.68 (s, 9H). [00587] Example 188: 2-{Bicyclo[1.1.1]pentan-1-yl}-N-{2-fluoro-4-methyl-5-[8-(mor pholin-4- yl)imidazo[1,2-a]pyridin-6-yl]phenyl}pyridine-4-carboxamide [00588] Step 1: To a stirred solution of 4-cyanopyridine (500 mg, 4.80 mmol), bicyclo[1.1.1]pentane-1- carboxylic acid (538.50 mg, 4.80 mmol) and AgNO 3 (587.39 mg, 3.46 mmol) in acetonitrile (16 mL) and water (8 mL) was added (NH4)2S2O8 (4.38 g, 19.21 mmol) at room temperature. The reaction mixture was stirred for 2 h at 80 °C. The resulting mixture was diluted with water (50 mL) and extracted with ethyl acetate (3 x 50 mL). The combined organic layers were washed with brine (2 x 50 mL), dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (5/1) to afford the crude product which was further purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, acetonitrile in water (Plus 10 mmol/L NH4HCO3), 30% to 65% gradient in 25 min; detector, UV 254/210 nm. The fractions containing the desired product were combined and concentrated to afford 2-{bicyclo[1.1.1]pentan-1-yl}pyridine-4-carbonitrile (140 mg, 17%) as a white solid. MS ESI calculated for C11H10N2. [M + H] + , 171.08, found 171.05; 1 H NMR (300 MHz, CDCl3) δ 8.71 (dd, J = 5.0, 1.0 Hz, 1H), 7.39 (dd, J = 1.6, 0.9 Hz, 1H), 7.34 (dd, J = 5.0, 1.6 Hz, 1H), 2.61 (s, 1H), 2.21 (s, 6H). [00589] Step 2: To a solution of 2-{bicyclo[1.1.1]pentan-1-yl}pyridine-4-carbonitrile (120 mg, 0.71 mmol) in EtOH (2.5 mL) was added NaOH (140.99 mg, 3.53 mmol) in water (2.5 mL) at room temperature. The reaction mixture was stirred for 2 h at 100 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, acetonitrile in water (Plus 10 mmol/L NH4HCO3), 5% to10% gradient in 10 min; detector, UV 254/210 nm. The fractions containing the desired product were combined and concentrated to afford 2-{bicyclo[1.1.1]pentan-1-yl}pyridine-4-carboxylic acid (60 mg, 44%) as a white solid. MS ESI calculated for C11H11NO2. [M + H] + , 190.08, found 190.10. [00590] Step 3: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]aniline (50 mg, 0.15 mmol), 2-{bicyclo[1.1.1]pentan-1-yl}pyridine-4-carboxylic acid (57.97 mg, 0.31 mmol), HOBt (31.05 mg, 0.23 mmol) and EDCI (44.05 mg, 0.23 mmol) in DMF (2 mL) was added TEA (62.01 mg, 0.61 mmol) dropwise at room temperature. The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (4/1). The residue was purified by reverse phase Flash chromatography with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: Water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: acetonitrile; Flow rate: 60 mL/min; Gradient: 32% B to 62% B in 8 min, 62% B; Wavelength: 254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (14.2 mg, 18%) as an off-white solid. MS ESI calculated for C 29 H 28 FN 5 O 2. [M + H] + , 498.22, found 498.20; 1 H NMR (400 MHz, DMSO-d6) δ 10.43 (s, 1H), 8.68 (dd, J = 5.1, 0.9 Hz, 1H), 8.16 (d, J = 1.5 Hz, 1H), 7.89 (d, J = 1.2 Hz, 1H), 7.77-7.68 (m, 2H), 7.55-7.49 (m, 2H), 7.32 (d, J = 11.5 Hz, 1H), 6.37 (d, J = 1.5 Hz, 1H), 3.80 (t, J = 4.6 Hz, 4H), 3.55 (t, J = 4.7 Hz, 4H), 2.59 (s, 1H), 2.31 (s, 3H), 2.16 (s, 6H). [00591] Example 189: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(5-morpholino -[1,2,4]triazolo[1,5- a]pyridin-7-yl)phenyl)-1H-pyrazole-4-carboxamide [00592] Step 1: To a stirred solution of 4,6-dichloropyridin-2-amine (20 g, 122.69 mmol) in DMSO (200 mL, 61.35 mmol) was added morpholine (21.38 g, 245.39 mmol) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at 100 °C under nitrogen atmosphere. The resulting mixture was diluted with water and extracted with EtOAc (3 x 200 mL). The combined organic layers were washed with brine (2 x 200 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (2/1). The fractions containing the desired product were combined and concentrated to afford 4-chloro-6- (morpholin-4-yl)pyridin-2-amine (6 g, 22%) as a white solid. MS ESI calculated for C9H12ClN3O [M+H] + , 214.07, 216.07, found 214.10, 216.10. [00593] Step 2: To a stirred solution of 4-chloro-6-(morpholin-4-yl)pyridin-2-amine (1.5 g, 7.02 mmol) in DMF (24.00 mL) was added DMF-DMA (4.18 g, 35.10 mmol). The reaction mixture was stirred for 2 h at 130 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA/EtOH (8/3/1). The fractions containing the desired product were combined and concentrated to afford (E)-N'- [4-chloro-6-(morpholin-4-yl)pyridin-2-yl]-N,N-dimethylmethan imidamide (1.52 g, 80%) as a white solid. MS ESI calculated for C 12 H 17 ClN 4 O [M+H] + , 269.11, 271.11, found 269.10, 271.10; 1 H NMR (400 MHz, Chloroform-d) δ 8.39-8.37 (m, 1H), 6.38-6.33 (m, 1H), 6.22-6.12 (m, 1H), 3.80 (t, J = 4.9 Hz, 4H), 3.51 (t, J = 4.9 Hz, 4H), 3.08 (s, 6H). [00594] Step 3: To a stirred solution of (E)-N'-[4-chloro-6-(morpholin-4-yl)pyridin-2-yl]-N,N- dimethylmethanimidamide (600 mg, 2.23 mmol) and Pyridine (882.98 mg, 11.16 mmol) in MeOH (5 mL) was added aminooxysulfonic acid (504.96 mg, 4.46 mmol) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 1 h at 60 °C under nitrogen atmosphere. The resulting mixture was diliuted with water (30 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (1 x 100 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford 4-{7-chloro- [1,2,4]triazolo[1,5-a]pyridin-5-yl}morpholine (443 mg, 83%) as a white solid. MS ESI calculated for C10H11ClN4O [M+H] + , 239.06, 241.06, found 239.05, 241.05; 1 H NMR (400 MHz, DMSO-d 6 ) δ 8.50 (s, 1H), 7.60 (d, J = 2.0 Hz, 1H), 6.62 (d, J = 2.1 Hz, 1H), 3.82 (t, J = 4.7 Hz, 4H), 3.55 (t, J = 4.7 Hz, 4H). [00595] Step 4: To a stirred solution of 1-(tert-butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(4,4,5,5- tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1H-pyrazole-4-ca rboxamide (52.70 mg, 0.13 mmol) and 4-{7-chloro-[1,2,4]triazolo[1,5-a]pyridin-5-yl}morpholine (30 mg, 0.13 mmol) and XPhos Pd G2 (9.89 mg, 0.01 mmol) and K3PO4 (53.36 mg, 0.25 mmol) in THF (0.9 mL) and water (0.1 mL) at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 1 h at 80 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with Ethyl acetate to afford the crude product. The crude product was purified by Prep-HPLC with the following conditions Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 32% B to 62% B in 8 min, 62% B; Wavelength: 254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (16.5 mg, 26%) as a white solid. MS ESI calculated for C25H27F2N7O2 [M + H] + , 496.22, found 496.20; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.73 (s, 1H), 8.51 (s, 1H), 8.00 (d, J = 2.6 Hz, 1H), 7.58 (d, J = 7.9 Hz, 1H), 7.38 (d, J = 1.5 Hz, 1H), 7.31 (d, J = 11.5 Hz, 1H), 6.48 (d, J = 1.6 Hz, 1H), 3.84 (t, J = 4.6 Hz, 4H), 3.50 (t, J = 4.6 Hz, 4H), 2.31 (s, 3H), 1.57 (d, J = 1.5 Hz, 9H). [00596] Example 204: N-(1-tert-butylpyrazol-4-yl)-2-fluoro-4-methyl-5-[8-(morphol in-4- yl)imidazo[1,2-a]pyridin-6-yl]benzamide [00597] Step 1: To a stirred solution of methyl 5-bromo-2-fluoro-4-methylbenzoate (1 g, 4.05 mmol), bis(pinacolato)diboron (1.54 g, 6.07 mmol) and KOAc (1.19 g, 12.14 mmol) in 1,4-dioxane (15 mL) was added Pd(dppf)Cl 2 ·CH 2 Cl 2 (329.72 mg, 0.41 mmol) in portions at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (4/1). The fractions containing the desired product were combined and concentrated to afford methyl 2-fluoro-4-methyl-5-(4,4,5,5- tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (940 mg, 78%) as an off-white solid. MS ESI calculated for C 15 H 20 BFO 4 . [M + H] + , 295.14, found 295.20; 1 H NMR (400 MHz, CDCl 3 ) δ 8.45 (d, J = 8.4 Hz, 1H), 6.94 (d, J = 16.0 Hz, 1H), 3.92 (s, 3H), 2.56 (s, 3H), 1.35 (s, 12H). [00598] Step 2: To a stirred solution of 4-{6-chloroimidazo[1,2-a]pyridin-8-yl}morpholine (400 mg, 1.68 mmol), methyl 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2-yl)benzoate (494.98 mg, 1.68 mmol) and K 3 PO 4 (714.43 mg, 3.37 mmol) in THF (5 mL) and H 2 O (0.5 mL) was added XPhos palladium(II) biphenyl-2-amine chloride (132.41 mg, 0.17 mmol) in portions at room temperature. The reaction mixture was degassed with nitrogen for three times and stirred for 2 h at 80 °C. The resulting mixture was diluted with water (20 mL) and extracted with EtOAc (2 x 20 mL). The combined organic layers were washed with brine (1 x 20 mL), dried over anhydrous Na 2 SO 4 . After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (5/1). The fractions containing the desired product were combined and concentrated to afford methyl 2- fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6 -yl]benzoate (500 mg, 80%) as a green solid. MS ESI calculated for C 20 H 20 FN 3 O 3 . [M + H] + , 370.15, found 370.15; 1 H NMR (400 MHz, CDCl3) δ 7.85 (d, J = 7.4 Hz, 1H), 7.72 (d, J = 1.4 Hz, 1H), 7.63-7.51 (m, 2H), 7.08 (d, J = 11.4 Hz, 1H), 6.30 (d, J = 1.5 Hz, 1H), 4.02-3.95 (m, 4H), 3.93 (s, 3H), 3.61-3.49 (m, 4H), 2.33 (s, 3H). [00599] Step 3: To a stirred solution of 1-tert-butylpyrazol-4-amine (20 mg, 0.14 mmol) in LiHMDS (2.5 mL) was added methyl 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]benzoate (53.07 mg, 0.14 mmol) in THF (1 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (1/1) to afford the crude product. The crude product (30 mg) was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH4HCO3 + 0.1% NH3·H2O), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 32% B to 52% B in 8 min; Wavelength: 254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (3.7 mg, 5%) as a white solid. MS ESI calculated for C26H29FN6O2. [M + H] + , 477.23, found 477.25; 1 H NMR (400 MHz, DMSO-d6) δ 10.35 (s, 1H), 8.19 (d, J = 1.4 Hz, 1H), 8.06 (s, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.64-7.55 (m, 2H), 7.52 (d, J = 1.2 Hz, 1H), 7.35 (d, J = 11.3 Hz, 1H), 6.40 (d, J = 1.5 Hz, 1H), 3.84 (t, J = 4.7 Hz, 4H), 3.56 (t, J = 4.7 Hz, 4H), 2.36 (s, 3H), 1.52 (s, 9H). [00600] Example 205: N-(3-tert-butylphenyl)-2-fluoro-4-methyl-5-[8-(morpholin-4-y l)imidazo[1,2- a]pyridin-6-yl]benzamide [00601] Step 1: To a stirred solution of methyl 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]benzoate (70 mg, 0.19 mmol) in LiHMDS (1 mL) was added 3-tert-butylaniline (28.28 mg, 0.19 mmol) in THF (1 mL) at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was quenched with sat. NH4Cl (aq.) (5 mL) at room temperature. The resulting mixture was diluted with water (30 mL) and extracted with EtOAc (3 x 20 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 + 0.1% NH 3 ·H 2 O), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 50% B to 80% B in 7 min; Wavelength: 254 nm; RT1: 5.87 min. The fractions containing the desired product were combined and concentrated to afford the title compound (45.7 mg, 49%) as a white solid. MS ESI calculated for C 29 H 31 FN 4 O 2. [M + H] + , 487.24, found 487.30; 1 H NMR (400 MHz, DMSO-d6) δ 10.29 (s, 1H), 8.20 (d, J = 1.5 Hz, 1H), 7.89 (d, J = 1.2 Hz, 1H), 7.72 (t, J = 2.1 Hz, 1H), 7.60 (d, J = 7.4 Hz, 2H), 7.52 (d, J = 1.2 Hz, 1H), 7.36 (d, J = 11.2 Hz, 1H), 7.27 (t, J = 7.9 Hz, 1H), 7.14 (dt, J = 8.0, 1.3 Hz, 1H), 6.40 (d, J = 1.5 Hz, 1H), 3.80 (t, J = 4.7 Hz, 4H), 3.56 (t, J = 4.8 Hz, 4H), 2.37 (s, 3H), 1.28 (s, 9H). [00602] Example 206: N-{2-Fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyri din-6-yl]phenyl}- 1-isopropylpyrrolo[2,3-b]pyridine-4-carboxamide [00603] Step 1: To a stirred solution of methyl 1H-pyrrolo[2,3-b]pyridine-4-carboxylate (200 mg, 1.05 mmol) in THF (2 mL) was added NaH (84 mg, 1.26 mmol, 60%) at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 30 min at 0 °C. To the above mixture was added 2-iodopropane (268 mg, 1.58 mmol) dropwise at 0 °C. The reaction mixture was stirred for 16 h at room temperature. The resulting mixture was quenched by the addition of sat. NH4Cl (aq.) (10 mL) at room temperature. The resulting mixture was extracted with EtOAc (3 x 20 mL). The combined organic layers were washed with brine (3 x 20 mL), dried over anhydrous Na2SO4. After filtration, the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with PE/EA (5/1). The fractions containing the desired product were combined and concentrated to afford methyl 1-isopropylpyrrolo[2,3- b]pyridine-4-carboxylate (110 mg, 45%) as a colorless oil. MS ESI calculated for C12H14N2O2 [M + H] + , 219.05, found 219.11; 1 H NMR (400 MHz, Chloroform-d) δ 8.44 (d, J = 5.0 Hz, 1H), 7.72 (d, J = 5.0 Hz, 1H), 7.52 (d, J = 3.6 Hz, 1H), 7.05 (d, J = 3.6 Hz, 1H), 5.33-5.26 (m, 1H), 4.04 (s, 3H), 1.57 (d, J = 6.8 Hz, 6H). [00604] Step 2: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (100 mg, 0.31 mmol) in LiHMDS (1 mL) was added methyl 1-isopropylpyrrolo[2,3- b]pyridine-4-carboxylate (67 mg, 0.31 mmol) in THF (1 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with MeOH and concentrated under reduced pressure. The residue was purified by silica gel column chromatography, eluted with CH2Cl2/MeOH (10/1) to afford the crude product. The crude product (120 mg) was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 + 0.1% NH 3 ·H 2 O), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 34% B to 64% B in 10 min, 64% B; Wavelength: 254 nm; RT1: 8.5 min. The fractions containing the desired product were combined and concentrated to afford N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]phenyl}-1-isopropylpyrrolo[2,3-b]pyridine-4-c arboxamide (92.6 mg, 59%) as a white solid. MS ESI calculated for C29H29FN6O2 [M + H] + , 513.23, found 513.35; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.26 (s, 1H), 8.41 (d, J = 5.0 Hz, 1H), 8.18 (d, J = 1.4 Hz, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.84 (d, J = 3.6 Hz, 1H), 7.63 (d, J = 7.8 Hz, 1H), 7.58-7.49 (m, 2H), 7.32 (d, J = 11.6 Hz, 1H), 6.82 (d, J = 3.6 Hz, 1H), 6.38 (d, J = 1.6 Hz, 1H), 5.15 (d, J = 6.8 Hz, 1H), 3.80 (t, J = 4.6 Hz, 4H), 3.56 (t, J = 4.8 Hz, 4H), 2.31 (s, 3H), 1.49 (d, J = 6.8 Hz, 6H). [00605] Example 220: 1-Tert-butyl-5-fluoro-N-{2-fluoro-4-methyl-5-[8-(morpholin-4 -yl)- [1,2,3,4]tetrazolo[1,5-a]pyridin-6-yl]phenyl}pyrazole-4-carb oxamide [00606] Step 1: To a stirred mixture of 3-bromo-2,5-dichloropyridine (2 g, 8.81 mmol) in THF (20 mL) was added hydrazine hydrate (4.41 g, 88.15 mmol) dropwise at room temperature. The reaction mixture was stirred for 16 h at 70 °C under nitrogen atmosphere. The resulting mixture was diluted with water (50 mL) and extracted with EtOAc (3 x 80 mL). The combined organic layers were washed with NaCl (3 x 10 mL), dried over anhydrous Na2SO4 concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1). The fractions containing the desired product were combined and concentrated to afford (E)-3-bromo-5-chloro-2- hydrazineylidene-1,2-dihydropyridine (800 mg, 40%) as a brown solid. MS ESI calculated for C 5 H 5 BrClN 3 [M + H] + , 221.94 found 221.90; 1 H NMR (400 MHz, DMSO-d 6 ) δ 8.13 (d, J = 2.2 Hz, 1H), 7.94 (d, J = 2.2 Hz, 1H), 7.68 (s, 1H), 4.27 (s, 2H). [00607] Step 2: To a stirred solution of (E)-3-bromo-5-chloro-2-hydrazineylidene-1,2-dihydropyridine (500 mg, 2.25 mmol) and H 2 O (3 mL) in AcOH (9 mL) were added NaNO 2 (310 mg, 4.49 mmol) and H 2 O (3 mL) dropwise at 0 °C. The reaction mixture was stirred for 2 h at 0 °C. The resulting mixture was diluted with water (50 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 100 mL), dried over anhydrous Sodium sulfate, and filtered. The filtrate was concentrated in vacuo to afford 8-bromo-6-chloro- [1,2,3,4]tetrazolo[1,5-a]pyridine (490 mg, crude) as an off-white solid. MS ESI calculated for C5H2BrClN4 [M + H]+, 232.92, found 232.90; 1 H NMR (400 MHz, Chloroform-d) δ 8.87-8.85 (d, J = 1.5 Hz, 1H), 7.91-7.89 (d, J = 1.5 Hz, 1H). Step 3: To a stirred solution of 8-bromo-6-chloro-[1,2,3,4]tetrazolo[1,5-a]pyridine (200 mg, 0.86 mmol) in DMF (5 mL) was added morpholine (149 mg, 1.71 mmol). The reaction mixture was stirred for 3 h at 140 °C. The resulting mixture was concentrated in vacuo and the residue purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in Water (Plus 0.1% TFA), 15% to 85% gradient in 25 min; detector, UV 300 nm. The fractions containing the desired product were combined and concentrated to afford 4-{6-chloro-[1,2,3,4]tetrazolo[1,5-a]pyridin-8-yl}morpholine (82 mg, 39%) as an off-white solid. MS ESI calculated for C 9 H 10 ClN 5 O [M + H]+, 240.06, found 240.05; 1 H NMR (400 MHz, Chloroform-d) δ 8.41-8.40 (d, J = 4.0 Hz, 1H), 6.62-6.61 (d, J = 4.0 Hz, 1H), 3.98-3.96 (m, 4H), 3.80-3.77 (m, 4H) [00608] Step 4: To a solution of 1-tert-butyl-5-fluoro-N-[2-fluoro-4-methyl-5-(4,4,5,5-tetram ethyl- 1,3,2-dioxaborolan-2-yl)phenyl]pyrazole-4-carboxamide (8 mg, 0.02 mmol), 2 nd Generation XPhos Precatalyst (1.64 mg, 0.002 mmol) and 4-{6-chloro-[1,2,3,4]tetrazolo[1,5-a]pyridin-8- yl}morpholine (5 mg, 0.02 mmol) in THF (1 mL) and H 2 O (0.1 mL) was added K 3 PO 4 (13 mg, 0.06 mmol). The reaction mixture was purged with nitrogen and stirred for 16 h at 80 °C. The resulting mixture was diluted with water (10 mL) and extracted with EtOAc (3 x 10 mL), dried over anhydrous Sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 + 0.05% NH3H2O), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 35% B to 65% B in 8 min, 65% B; Wave Length: 254; 220 nm; RT1: 6.5 min. The fractions containing the desired product were combined and concentrated to afford the title compound (2.8 mg, 26%) as an off-white solid. MS ESI calculated for C24H26F2N8O2 [M + H] + , 497.21, found 497.40; 1 H NMR (400 MHz, Chloroform-d) δ 8.43-8.41 (d, J=7.8 Hz, 1H), 8.32-8.31 (d, J=1.2 Hz, 1H), 7.84-7.83 (d, J = 2.6 Hz, 1H), 7.72-7.71 (d, J = 4.6 Hz, 1H), 7.14-7.11 (d, J = 11.8 Hz, 1H), 6.62 (s, 1H), 4.00- 3.98 (m, 4H), 3.77-3.75 (m, 4H), 2.29 (s, 3H), 1.68 (s, 9H). [00609] Example 226: 1-(tert-Butyl)-N-(5-chloro-4-(8-morpholinoimidazo[1,2-a]pyri din-6-yl)pyridin-2- yl)-5-fluoro-1H-pyrazole-4-carboxamide [00610] Step 1: To a stirred solution of 4-bromo-5-chloropyridin-2-amine (200 mg, 0.96 mmol), Pd(PPh3)2Cl2 (67.67 mg, 0.096 mmol) and Na2CO3 (306.53 mg, 2.89 mmol) in dioxane (4 mL) and H 2 O (1 mL) was added 4-[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1, 2- a]pyridin-8-yl]morpholine (1.44 g, 1.44 mmol, 33%) at room temperature. The reaction mixture was purged with nitrogen and stirred for 2 h at 80 °C. The resulting mixture was diluted with water (20 mL) and extracted with EtOAc (3 x 20 mL). The combined organic layers were washed with brine (50 mL), dried over anhydrous Na 2 SO 4 , filtered, and concentrated in vacuo. The residue purified by silica gel column chromatography (PE/EA, 1:2). The fractions containing the desired product were combined and concentrated to afford 5-chloro-4-[8- (morpholin-4-yl)imidazo[1,2-a]pyridin-6-yl]pyridin-2-amine (240 mg, 75%) as a yellow solid. MS ESI calculated for C 16 H 16 ClN 5 O [M+H] + , 330.10, 332.10, found 330.15, 332.15; 1 H NMR (400 MHz, Chloroform-d) δ 8.14 (s, 1H), 7.90 (d, J = 1.6 Hz, 1H), 7.59-7.52 (m, 2H), 6.53 (s, 1H), 6.45 (d, J = 1.6 Hz, 1H), 4.59 (s, 2H), 3.98 (t, J = 4.8 Hz, 4H), 3.58 (dd, J = 5.7, 3.5 Hz, 4H). [00611] Step 2: To a stirred solution of 5-chloro-4-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6- yl]pyridin-2-amine (50 mg, 0.15 mmol), Pd(dppf)Cl 2∙ CH 2 Cl 2 (24.70 mg, 0.030 mmol), Co 2 (CO) 8 (15.55 mg, 0.046 mmol) and 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (67.03 mg, 0.30 mmol) in dioxane (2.5 mL) was added TEA (0.13 mL, 0.91 mmol) at room temperature. The reaction mixture was purged with nitrogen and stirred for stirred for 16 h at 90 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 8:3:1) to afford a crude product which (50 mg) was purified by Prep-HPLC with the following conditions:Column: YMC-Actus Triart C18 ExRS, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 +0.1% NH 3 ∙H 2 O), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 47% to 61% in 7 min, 61% B; Wave Length: 220/254 nm; RT: 6.68 min. The fractions containing the desired product were combined and concentrated to afford the title compound (19.7 mg, 25%) as a white solid. MS ESI calculated for C 24 H 25 ClFN 7 O 2 [M+H] + , 498.17, found 498.15; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.78 (s, 1H), 8.55 (s, 1H), 8.41 (d, J = 1.5 Hz, 1H), 8.31 (s, 1H), 8.22 (d, J = 2.4 Hz, 1H), 7.99 (d, J = 1.3 Hz, 1H), 7.56 (d, J = 1.3 Hz, 1H), 6.52 (d, J = 1.6 Hz, 1H), 3.85-3.78 (m, 4H), 3.57-3.50 (m, 4H), 1.57 (d, J = 1.4 Hz, 9H). [00612] Example 228: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(8-morpholino imidazo[1,2- a]pyrazin-6-yl)phenyl)-1H-pyrazole-4-carboxamide [00613] Step 1: To a stirred solution of 6-bromo-8-chloroimidazo[1,2-a]pyrazine (500 mg, 2.15 mmol), morpholine (187.38 mg, 2.15 mmol) and K3PO4 (1.37 g, 6.45 mmol) in dioxane (6 mL) were added Pd(OAc)2 (48.29 mg, 0.22 mmol) and Dppf (356.42 mg, 0.65 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen and stirred for 16 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1). The fractions containing the desired product were combined and concentrated to afford 4-{6-bromoimidazo[1,2-a]pyrazin-8-yl}morpholine (370 mg, 60%) as a light yellow solid. MS ESI calculated for C10H11BrN4O [M + H] + , 283.01, found 283.00; 1 H NMR (400 MHz, Chloroform-d) δ 7.64 (s, 1H), 7.54 (d, J = 1.2 Hz, 1H), 7.47 (d, J = 1.1 Hz, 1H), 4.35-4.28 (m, 4H), 3.90-3.83 (m, 4H). [00614] Step 2: To a stirred mixture of 4-{6-bromoimidazo[1,2-a]pyrazin-8-yl}morpholine (1 g, 3.53 mmol), 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2-yl)aniline (1.06 g, 4.24 mmol) and K 2 CO 3 (0.98 g, 7.06 mmol) in dioxane (8 mL) and H 2 O (2 mL) was added Pd(dppf)Cl2∙CH2Cl2 (0.29 g, 0.35 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen and stirred for 2 h at 80°C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5- [8-(morpholin-4-yl)imidazo[1,2-a]pyrazin-6-yl]aniline (800 mg, 66%) as a white solid. MS ESI calculated for C 17 H 18 FN 5 O [M + H] + , 328.15, found 328.15; 1 H NMR (400 MHz, Chloroform-d) δ 7.57 (d, J = 1.1 Hz, 1H), 7.56-7.50 (m, 2H), 6.89-6.82 (m, 2H), 4.34-4.27 (m, 4H), 3.90-3.84 (m, 4H), 2.29 (s, 3H). [00615] Step 3: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyrazin - 6-yl]aniline (80 mg, 0.24 mmol), Co 2 (CO) 8 (0.07 mmol, 17.17 mg) and 4-bromo-1-(tert-butyl)- 5-fluoro-1H-pyrazole (64.83 mg, 0.29 mmol) in 1,4-dioxane (1 mL) was added Pd(dppf)Cl2∙CH2Cl2 (39.81 mg, 0.05 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen and stirred for 16 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1) to afford a crude product which was further purified by Prep-HPLC with the following conditions: Column: YMC-Actus Triart C18 ExRS, 30 x 150 mm, 5 μm; Mobile Phase A: Water (Plus 10 mmol/L NH 4 HCO 3 +0.1% NH 3 ∙H 2 O), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 50% B to 66% B in 7 min; Wave Length: 220/254 nm; RT1: 7.2 min. The fractions containing the desired product were combined and concentrated to afford the title compound (32.1 mg, 26%) as a white solid. MS ESI calculated for C 25 H 27 F 2 N 7 O 2. [M + H] + , 496.22, found 496.35; 1 H NMR (400 MHz, DMSO-d6) δ 9.68 (s, 1H), 8.09 (s, 1H), 7.99 (dd, J = 8.5, 1.8 Hz, 2H), 7.65 (d, J = 8.1 Hz, 1H), 7.60 (d, J = 1.1 Hz, 1H), 7.23 (d, J = 11.5 Hz, 1H), 4.20 (t, J = 4.6 Hz, 4H), 3.75 (t, J = 4.8 Hz, 4H), 2.38 (s, 3H), 1.57 (s, 9H). [00616] Example 236: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(8-morpholino imidazo[1,2- a]pyrazin-6-yl)phenyl)-1H-pyrazole-4-carboxamide
[00617] Step 1: To a stirred mixture of 8-bromo-6-chloroimidazo[1,2-a]pyridine (2 g, 8.64 mmol) and 2- (3,6-dihydro-2H-pyran-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxab orolane (2 g, 9.50 mmol), Na2CO3 (2.75 g, 25.92 mmol) in dioxane (20 mL) and H 2 O (5 mL) was added Pd(PPh 3 ) 2 Cl 2 (0.61 g, 0.86 mmol). The reaction mixture was purged with nitrogen and stirred for 3 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography, eluted with DCM/MeOH (10/1) to afford a crude product which was further purified by reverse phase Flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 80 g; Eluent A: Water (Plus 10 mmol/L NH4HCO3); Eluent B: ACN; Gradient: 30% B to 45% B in 25 min; Flow rate: 50 mL/min; Detector: 220/254 nm; The fractions containing the desired product were combined and concentrated to afford 6-chloro-8- (3,6-dihydro-2H-pyran-4-yl)imidazo[1,2-a]pyridine (1.3 g, 64%) as a light yellow solid. MS ESI calculated for C12H11ClN2O [M + H] + , 235.06, found 235.05; 1 H NMR (400 MHz, Chloroform- d) δ 8.10 (d, J = 2.0 Hz, 1H), 7.67 (d, J = 1.2 Hz, 1H), 7.56 (d, J = 1.2 Hz, 1H), 7.53-7.51 (m, 1H), 7.08 (d, J = 2.0 Hz, 1H), 4.48-4.46 (m, 2H), 4.02-3.99 (m, 2H), 2.67-2.63 (m, 2H). [00618] Step 2: To a stirred solution of trimethyl(oxo)-lambda6-sulfanylium iodide (637 mg, 2.90 mmol) in DMSO (5 mL) was added NaH (116 mg, 2.90 mmol, 60%) in portions at 0 °C. The reaction mixture was purged with nitrogen and stirred for 0.5 h at room temperature. To the above mixture was added 6-chloro-8-(3,6-dihydro-2H-pyran-4-yl)imidazo[1,2-a]pyridine (170 mg, 0.72 mmol) at room temperature. The reaction mixture was stirred for additional 16 h at 60 °C. The resulting mixture was quenched by the addition of saturated aqueous NH 4 Cl (100 mL) and extracted with EA (3 x 50 mL). The combined organic layers were washed with brine (3 x 50 mL), dried over anhydrous Na2SO4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 4:1). The fractions containing the desired product were combined and concentrated to afford 6-chloro-8-{3- oxabicyclo[4.1.0]heptan-6-yl}imidazo[1,2-a]pyridine (70 mg, 39%) as an off-white solid. MS ESI calculated for C 13 H 13 ClN 2 O [M + H] + , 249.07, found 249.10. [00619] Step 3: To a stirred mixture of 6-chloro-8-{3-oxabicyclo[4.1.0]heptan-6-yl}imidazo[1,2- a]pyridine (70 mg, 0.28 mmol), 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2- yl)aniline (85 mg, 0.34 mmol) and K 3 PO 4 (179 mg, 0.84 mmol) in THF (7 mL) and H 2 O (0.7 mL) was added XPhos palladium(II) G2 (22 mg, 0.03 mmol). The reaction mixture was purged with nitrogen and stirred for 1 h at 80 °C. The resulting mixture was diluted with water (50 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous Sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4- methyl-5-(8-{3-oxabicyclo[4.1.0]heptan-6-yl}imidazo[1,2-a]py ridin-6-yl)aniline (50 mg, 53%) as a brown solid. MS ESI calculated for C20H20FN3O [M + H] + , 338.16, found 338.30. [00620] Step 4: To a stirred solution of 2-fluoro-4-methyl-5-(8-{3-oxabicyclo[4.1.0]heptan-6- yl}imidazo[1,2-a]pyridin-6-yl)aniline (45 mg, 0.13 mmol), Pd(dppf)Cl 2 . CH 2 Cl 2 (11 mg, 0.01 mmol) and Co2(CO)8 (14 mg, 0.04 mmol) in dioxane (1 mL) were added TEA (81 mg, 0.80 mmol) and 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (0.16 mmol, 35.41 mg). The reaction mixture was purged with nitrogen and stirred for 16 h at 90 °C. The resulting mixture was diluted with water (50 mL) and extracted with ethyl acetate (3 x 50 mL). The combined organic layers were washed with brine (50 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by Prep-TLC (PE/EA/EtOH, 4:3:1) to afford a crude product which was further purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: Water (Plus 10 mmol/L NH 4 HCO 3 + 0.05% NH 3 H 2 O), Mobile Phase B: MeCN; Flow rate: 60 mL/min mL/min; Gradient: 17% B to 42% B in 8 min; Wave Length: 254nm/220nm nm; RT1: 7.8 min. The fractions containing the desired product were combined and concentrated to afford the title compound (3.0 mg, 4%) as an off-white solid. MS ESI calculated for C28H29F2N5O2 [M - H ] + , 504.23, found 504.30; 1 H NMR (400 MHz, Chloroform-d) δ 8.30 (d, J = 8.4 Hz, 1H), 7.94-7.92 (m, 1H), 7.82 (d, J = 2.4 Hz, 1H), 7.66-7.63 (m, 1H), 7.48 (d, J = 1.6 Hz, 1H), 7.19-7.17 (m, 2H), 7.05 (d, J = 11.6 Hz, 1H), 4.48-4.46 (m, 2H), 4.28-4.23 (m, 3H), 4.03-4.00 (m, 2H), 2.70- 2.65 (m, 2H), 2.25 (s, 3H), 1.66 (s, 9H). [00621] Example 239: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(8-morpholino imidazo[1,2- b]pyridazin-6-yl)phenyl)-1H-pyrazole-4-carboxamide
[00622] Step 1: To a stirred solution of 8-bromo-6-chloroimidazo[1,2-b]pyridazine (500.00 mg, 2.15 mmol) in EtOH (5.00 mL) were added morpholine (1.87 g, 21.51 mmol) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 3 h at room temperature under nitrogen atmosphere. The resulting mixture was filtered, the filter cake washed with EtOH (3 x 5 mL) to afford 4-[6-chloroimidazo[1,2-b]pyridazin-8-yl]morpholine (500 mg, crude) as a light yellow solid. MS ESI calculated for C 10 H 11 ClN 4 O [M + H] + , 239.06, found 239.10. [00623] Step 2: To a stirred mixture of 4-{6-chloroimidazo[1,2-b]pyridazin-8-yl}morpholine (1 g, 4.19 mmol) and 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2-yl)aniline (1.05 g, 4.19 mmol) in THF (10 mL) and H2O (2.5 mL) were added XPhos Pd G2 (0.33 g, 0.42 mmol) and K3PO4 (1.78 g, 8.38 mmol) at room temperature. The reaction mixture was purged with nitrogen and stirred for 2 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-[8-(morpholin- 4-yl)imidazo[1,2-b]pyridazin-6-yl]aniline (1 g, 72%) as a light yellow solid. MS ESI calculated for C 17 H 18 FN 5 O [M + H] + , 328.15, found 328.15; 1 H NMR (400 MHz, Chloroform-d) δ 7.84 (d, J = 1.2 Hz, 1H), 7.58 (d, J = 1.2 Hz, 1H), 6.92 (d, J = 11.8 Hz, 1H), 6.83 (d, J = 9.0 Hz, 1H), 6.09 (s, 1H), 4.01-3.94 (m, 4H), 3.96-3.89 (m, 4H), 2.24 (s, 3H). [00624] Step 3: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-b]pyridaz in- 6-yl]aniline (80 mg, 0.24 mmol), Co 2 (CO) 8 (0.07 mmol, 17.17 mg) and 4-bromo-1-(tert-butyl)- 5-fluoro-1H-pyrazole (64.83 mg, 0.29 mmol) in 1,4-dioxane (1 mL) were added Pd(dppf)Cl 2∙ CH 2 Cl 2 (19.91 mg, 0.024 mmol) and TEA (74.19 mg, 0.73 mmol) at room temperature. The reaction mixture was purged with nitrogen and stirred for 16 h at 90 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1) to afford a crude product which (80 mg) was purified by Prep- HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: Water (Plus 10 mmol/L NH4HCO3 + 0.1% NH3∙H2O), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 34% B to 64% B in 7 min; Wave Length: 254 nm; RT1: 5.87 min. The fractions containing the desired products were combined and concentrated to afford the title compound (27.3 mg, 22%) as a grey solid. MS ESI calculated for C 25 H 27 F 2 N 7 O 2 [M + H] + , 496.22, found 496.30; 1 H NMR (400 MHz, DMSO-d6) δ 9.73 (s, 1H), 8.09 (d, J = 1.3 Hz, 1H), 8.00 (d, J = 2.5 Hz, 1H), 7.66-7.57 (m, 2H), 7.29 (d, J = 11.5 Hz, 1H), 6.34 (s, 1H), 4.03 (t, J = 4.8 Hz, 4H), 3.77 (t, J = 4.8 Hz, 4H), 2.34 (s, 3H), 1.57 (s, 9H). [00625] Example 242: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(8-(tetrahydr o-2H-pyran-4- yl)imidazo[1,2-b]pyridazin-6-yl)phenyl)-1H-pyrazole-4-carbox amide [00626] Step 1: To a stirred mixture of 8-bromo-6-chloroimidazo[1,2-b]pyridazine (500 mg, 2.15 mmol), 2-(3,6-dihydro-2H-pyran-4-yl)-4,4,5,5-tetramethyl-1,3,2-diox aborolane (497.03 mg, 2.37 mmol) and Na2CO3 (683.88 mg, 6.45 mmol) in 1,4-dioxane (5 mL) and H2O (1.2 mL) was added Pd(PPh 3 ) 2 Cl 2 (150.97 mg, 0.21 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen and stirred for 2 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1). The fractions containing the desired product were combined and concentrated to afford 6-chloro-8-(3,6- dihydro-2H-pyran-4-yl)imidazo[1,2-b]pyridazine (500 mg, 83%) as a yellow solid. MS ESI calculated for C11H10ClN3O [M + H] + , 236.05, found 236.10; 1 H NMR (400 MHz, Chloroform- d) δ 8.04 (d, J = 3.2 Hz, 1H), 8.05-7.88 (m, 1H), 7.43-7.28 (m, 1H), 6.91 (s, 1H), 4.49-4.46 (m, 2H), 4.00-3.95 (m, 2H), 2.61-2.54 (m, 2H). [00627] Step 2: To a stirred mixture of 6-chloro-8-(3,6-dihydro-2H-pyran-4-yl)imidazo[1,2-b]pyridazi ne (500 mg, 2.12 mmol), 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2-yl)aniline (799.14 mg, 3.18 mmol) and K 3 PO 4 (900.69 mg, 4.24 mmol) in THF (0.5 mL) and H 2 O (0.1 mL) were added XPhos Pd G2 (166.93 mg, 0.21 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen and stirred for 16 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1). The fractions containing the desired product were combined and concentrated to afford 5-[8-(3,6-dihydro-2H-pyran-4-yl)imidazo[1,2-b]pyridazin-6-yl ]-2-fluoro-4-methylaniline (270 mg, 38%) as a light yellow solid. MS ESI calculated for C18H17FN4O [M + H] + , 325.14, found 325.15; 1 H NMR (400 MHz, Chloroform-d) δ 8.03-7.95 (m, 2H), 7.76 (d, J = 1.2 Hz, 1H), 6.99-6.92 (m, 2H), 6.87 (d, J = 9.0 Hz, 1H), 4.50-4.45 (m, 2H), 4.01 (t, J = 5.4 Hz, 2H), 3.76 (s, 2H), 2.64-2.58 (m, 2H), 2.26 (s, 3H). [00628] Step 3: To a stirred solution of 5-[8-(3,6-dihydro-2H-pyran-4-yl)imidazo[1,2-b]pyridazin-6-yl ]- 2-fluoro-4-methylaniline (100 mg, 0.31 mmol) in THF (3 mL) was added Pd/C (10%, 50 mg) under nitrogen atmosphere. The reaction mixture was degassed with hydrogen atmosphere for three times and stirred for 3 h at room temperature under hydrogen atmosphere. The resulting mixture was filtered, the filtrate was concentrated in vacuo to afford 2-fluoro-4-methyl-5-[8- (oxan-4-yl)imidazo[1,2-b]pyridazin-6-yl]aniline (90 mg, crude) as a light yellow solid. MS ESI calculated for C18H19FN4O [M + H] + , 327.16, found 327.15. [00629] Step 4: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(oxan-4-yl)imidazo[1,2-b]pyridazin-6- yl]aniline (80 mg, 0.25 mmol), 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (65.03 mg, 0.29 mmol), TEA (148.82 mg, 1.47 mmol) and Co2(CO)8 (25.15 mg, 0.07 mmol) in 1,4-dioxane (1 mL) was added Pd(dppf)Cl2·CH2Cl2 (39.94 mg, 0.05 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen and stirred for 16 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1) to afford a crude product which was further purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 32% B to 62% B in 7 min; Wave Length: 254 nm/220 nm; RT1: 5.38 min. The fractions containing the desired product were combined and concentrated to afford the title compound (23.9 mg, 20%) as a white solid. MS ESI calculated for C 26 H 28 F 2 N 6 O 2. [M + H] + , 495.22, found 495.35; 1 H NMR (400 MHz, DMSO-d6) δ 9.76 (s, 1H), 8.29 (d, J = 1.2 Hz, 1H), 8.01 (d, J = 2.5 Hz, 1H), 7.78 (d, J = 1.2 Hz, 1H), 7.71 (d, J = 7.9 Hz, 1H), 7.34 (d, J = 11.5 Hz, 1H), 7.20 (s, 1H), 3.98-3.94 (m, 2H), 3.53-3.45 (m, 3H), 2.37 (s, 3H), 2.05-1.88 (m, 4H), 1.57 (s, 9H). [00630] Example 247: 5-Fluoro-N-{2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1 ,2-a]pyridin-6- yl]phenyl}-1-(1-methylcyclopropyl)pyrrole-3-carboxamide
[00631] Step 1: To a stirred solution of 1-methylcyclopropan-1-amine hydrochloride (30.00 g, 278.86 mmol) and NaOAc (45.75 g, 557.72 mmol) in AcOH (50 mL) was added 2,5-dimethoxyoxolane (36.03 mL, 278.86 mmol) dropwise at room temperature. The reaction mixture was stirred for 16 h at 80 °C. The resulting mixture was diluted with saturated NaHCO 3 (aq.). The resulting mixture was extracted with CH 2 Cl 2 (2 x 300 mL). The combined organic layers were washed with brine (200 mL), dried over anhydrous Na2SO4 and filtered. The filtrate was concentrated in vacuo and the residue purified by distillation in vacuo and the fraction was collected at 70 °C. This resulted in 1-(1-methylcyclopropyl)pyrrole (5 g, crude) as a colorless oil. 1 H NMR (400 MHz, Chloroform-d) δ 6.77 (t, J = 2.1 Hz, 2H), 6.09 (t, J = 2.2 Hz, 2H), 1.52 (s, 3H), 1.15-1.08 (m, 2H), 0.82-0.75 (m, 2H). [00632] Step 2: To a stirred solution of 2,3,4-tribromo-1-(1-methylcyclopropyl)pyrrole (10 g, 27.94 mmol) in THF (600 mL) was added NBS (29.37 g, 165.04 mmol) in THF (30 mL) dropwise at - 78 °C under nitrogen atmosphere. The reaction mixture was stirred for 2 h at room temperature under nitrogen atmosphere. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE, 100%). The fractions containing the desired product were combined and concentrated to afford 2,3,4,5-tetrabromo-1-(1- methylcyclopropyl)pyrrole (2.56 g, 14%) as a white solid. 1 H NMR (400 MHz, Chloroform-d) δ 1.45 (s, 3H), 1.27-1.23 (m, 2H), 1.13-1.07 (m, 2H). [00633] Step 3: To a stirred solution of 2,3,4,5-tetrabromo-1-(1-methylcyclopropyl)pyrrole (2.56 g, 5.86 mmol) in THF (25 mL) was added n-BuLi (2.46 mL, 6.15 mmol) dropwise at -78 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at -78 °C under nitrogen atmosphere. The resulting mixture was quenched with sat. NH4Cl (aq.) at 0 °C. The resulting mixture was extracted with EtOAc (2 x 50 mL). The combined organic layers were washed with brine (50 mL), dried over anhydrous Sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE, 100%). The fractions containing the desired product were combined and concentrated to afford 2,3,4- tribromo-1-(1-methylcyclopropyl)pyrrole (1.5 g, 71%) as a colorless solid. 1 H NMR (400 MHz, Chloroform-d) δ 6.87 (s, 1H), 1.48 (s, 3H), 1.17-1.09 (m, 2H), 0.96-0.90 (m, 2H). [00634] Step 4: To a stirred solution of 2,3,4-tribromo-1-(1-methylcyclopropyl)pyrrole (1.5 g, 4.19 mmol) in THF (15 mL) was added n-BuLi (1.76 mL, 4.40 mmol) dropwise at -78 °C under nitrogen atmosphere. The resulting mixture was stirred for 30 min at -78 °C under nitrogen atmosphere. To the above mixture was added NFSI (7.93 g, 25.15 mmol) in THF (15 mL) dropwise at -78 °C. The reaction mixture was stirred for additional 1 h at -78 °C. The reaction was quenched with sat. NH4Cl (aq.) at 0 °C. The resulting mixture was extracted with EtOAc (2 x 50 mL). The combined organic layers were washed with brine (50 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE, 100%). The fractions containing the desired product were combined and concentrated to afford 3,4-dibromo-2-fluoro-1-(1- methylcyclopropyl)pyrrole (640 mg, 25%) as a yellow oil. 1 H NMR (400 MHz, Chloroform-d) δ 6.39 (d, J = 1.9 Hz, 1H), 1.47 (s, 3H), 1.10-1.06 (m, 2H), 0.87-0.82 (m, 2H). [00635] Step 5: To a stirred solution of 3,4-dibromo-2-fluoro-1-(1-methylcyclopropyl)pyrrole (640 mg, 2.16 mmol) in THF (6.4 mL) was added n-BuLi (0.91 mL, 2.26 mmol) dropwise at -78 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at -78 °C under nitrogen atmosphere. The reaction was quenched with sat. NH4Cl (aq.) at 0 °C. The resulting mixture was extracted with EtOAc (2 x 30 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE, 100%). The fractions containing the desired product were combined and concentrated to afford 4-bromo-2-fluoro-1- (1-methylcyclopropyl)pyrrole (370 mg, 78%) as a light yellow oil. 1 H NMR (400 MHz, Chloroform-d) δ 6.29-6.23 (m, 1H), 5.48 (dd, J = 3.8, 2.2 Hz, 1H), 1.46 (s, 3H), 1.08-1.05 (m, 2H), 0.85-0.78 (m, 2H). [00636] Step 6: To a stirred solution of 4-bromo-2-fluoro-1-(1-methylcyclopropyl)pyrrole (270 mg, 0.99 mmol, 80%) in THF (2.7 mL) was added n-BuLi (0.42 mL, 1.04 mmol) dropwise at -78 °C under nitrogen atmosphere. The reaction mixture was stirred for 30 min at -78 °C under nitrogen atmosphere. To the above mixture was added carbonochloridic acid, propyl ester (0.17 mL, 1.49 mmol) dropwise at -78 °C. The reaction mixture was stirred for additional 1 h at -78 °C. The resulting mixture was quenched with sat. NH4Cl (aq.) at 0 °C. The resulting mixture was diluted with water (10 mL). The resulting mixture was extracted with EtOAc (2 x 30 mL). The combined organic layers were washed with brine (30 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 11:1). The fractions containing the desired product were combined and concentrated to afford propyl 5-fluoro-1-(1-methylcyclopropyl)pyrrole-3-carboxylate (170 mg, 76%) as a colorless oil. MS ESI calculated for C 12 H 16 FNO 2 [M + H] + , 226.12, found 226.10; 1 H NMR (400 MHz, Chloroform-d) δ 6.94 (t, J = 2.1 Hz, 1H), 5.84 (dd, J = 4.0, 2.2 Hz, 1H), 4.15 (t, J = 6.8 Hz, 2H), 1.76-1.67 (m, 2H), 1.50 (s, 3H), 1.26 (t, J = 7.2 Hz, 1H), 1.11 (t, J = 8.0 Hz, 2H), 0.98 (t, J = 7.4 Hz, 3H), 0.91-0.84 (m, 2H). [00637] Step 7: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (70 mg, 0.21 mmol) and LiHMDS (1 M in THF) (0.64 mL, 0.64 mmol) in THF (0.7 mL) was added propyl 5-fluoro-1-(1-methylcyclopropyl)pyrrole-3-carboxylate (48.31 mg, 0.21 mmol) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched with water at room temperature. The resulting mixture was extracted with EtOAc (2 x 20 mL). The combined organic layers were washed with brine (10 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:9) to afford a crude product which was further purified by Prep- HPLC with following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 30% B to 60% B in 10 min; Wave Length: 254 nm/220 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (42.9 mg, 40%) as a white solid. MS ESI calculated for C 27 H 27 F 2 N 5 O 2 [M + H] + , 492.21, found 492.35; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.41 (s, 1H), 8.13 (d, J = 1.5 Hz, 1H), 7.89 (d, J = 1.2 Hz, 1H), 7.53-7.46 (m, 2H), 7.28-7.21 (m, 2H), 6.35 (d, J = 1.5 Hz, 1H), 6.06 (dd, J = 3.8, 2.3 Hz, 1H), 3.80 (t, J = 4.6 Hz, 4H), 3.54 (t, J = 4.7 Hz, 4H), 2.28 (s, 3H), 1.47 (s, 3H), 1.14-1.06 (m, 2H), 0.97-0.90 (m, 2H). [00638] Example 248: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-6-methyl-5-(8-morpholino imidazo[1,2- a]pyridin-6-yl)pyridin-3-yl)-1H-pyrazole-4-carboxamide [00639] Step 1: To a stirred mixture of 5-bromo-2-fluoro-6-methylpyridin-3-amine (120 mg, 0.59 mmol), Pd(PPh 3 ) 2 Cl 2 (48 mg, 0.06 mmol) and Na 2 CO 3 (186 mg, 1.76 mmol) in dioxane (4.8 mL) and water (1.2 mL) was added 4-[6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2- yl)imidazo[1,2-a]pyridin-8-yl]morpholine (578 mg, 1.76 mmol, 30%) at room temperature. The reaction mixture was purged with nitrogen and stirred for 2 h at 80 °C. The resulting mixture was diluted with water (20 mL) and extracted with EA (2 x 30 mL). The combined organic layers were washed with brine (100 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-6-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]pyridin-3-amine (120 mg, 62%) as a light brown solid. MS ESI calculated for C17H18FN5O [M + H] + , 328.15, found 328.15; 1 H NMR (400 MHz, Chloroform-d) δ 7.72 (d, J = 1.2 Hz, 1H), 7.63-7.61 (m, 1H), 7.57-7.55 (m, 1H), 7.06-7.02 (m, 1H), 6.33-6.31 (m, 1H), 4.00 (t, J=4.8 Hz, 4H), 3.58 (t, J = 4.8 Hz, 4H), 2.35 (s, 3H). [00640] Step 2: To a stirred solution of 2-fluoro-6-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]pyridin-3-amine (70 mg, 0.21 mmol,), Pd(dppf)Cl 2 ∙DCM (17 mg, 0.02 mmol) and Co2(CO)8 (21.94 mg, 0.06 mmol) in dioxane (1 mL) were added TEA (1.26 mmol, 127.26 mg) and 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (57 mg, 0.26 mmol) at room temperature. The reaction mixture was purged with nitrogen and stirred for 16 h at 90 °C. The resulting mixture was diluted with water (10 mL) and extracted with Ethyl acetate (3 x 20 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous Sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 8:3:1) to afford a crude product which was further purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: Water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 28% B to 58% B in 7 min; Wave Length: 254 nm/220 nm; RT1: 6.4 min. The fractions containing the desired product were combined and concentrated to afford title compound (36.6 mg, 34%) as an off-white solid. MS ESI calculated for C25H27F2N7O2 [M + H] + , 496.22, found 496.20; 1 H NMR (400 MHz, Chloroform-d) δ 8.76 (d, J = 9.6 Hz, 1H), 7.83 (d, J = 2.8 Hz, 1H), 7.78 (d, J = 2.4 Hz, 1H), 7.65-7.59 (m, 2H), 7.56 (d, J = 1.2 Hz, 1H), 6.35 (s, 1H), 4.00-3.99 (m, 4H), 3.64-3.57 (m, 4H), 2.45 (s, 3H), 1.68-1.60 (m, 9H). [00641] Example 250: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(2-methyl-8-m orpholino- [1,2,4]triazolo[1,5-a]pyridin-6-yl)phenyl)-1H-pyrazole-4-car boxamide
[00642] Step 1: To a stirred solution of 8-bromo-6-chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyridine (500 mg, 2.03 mmol), BINAP (126 mg, 0.20 mmol), t-BuONa (779 mg, 8.11 mmol) and Pd(OAc) 2 (68 mg, 0.30 mmol) in toluene (10 mL) was added morpholine (176 mg, 2.03 mmol). The reaction mixture was purged with nitrogen and stirred for 3 h at 95 °C. The resulting mixture was concentrated in vacuo and the residue purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in Water (Plus 0.1% TFA), 15 % to 85% gradient in 25 min; detector, UV 220 nm. The fractions containing the desired product were combined and concentrated to afford 4-{6-chloro-2-methyl- [1,2,4]triazolo[1,5-a]pyridin-8-yl}morpholine (200 mg, 39%) as an off-white solid. MS ESI calculated for C11H13ClN4O [M + H] + , 253.08, found 253.30; 1 H NMR (400 MHz, Chloroform- d) δ 8.16-8.13 (m, 1H), 6.63-6.60 (m, 1H), 4.01-3.94 (m, 4H), 3.61-3.54 (m, 4H), 2.59 (s, 3H). [00643] Step 2: To a stirred solution of 4-{6-chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyridin-8- yl}morpholine (160 mg, 0.63 mmol), XPhos Pd G2 (49 mg, 0.06 mmol) and 2-fluoro-4-methyl- 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (158 mg, 0.63 mmol) in THF (2 mL) was added K 3 PO 4 (0.5 M, 4 mL). The reaction mixture was purged with nitrogen and stirred for 2 h at 80 °C. The resulting mixture was diluted with water (20 mL) and extracted with EtOAc (3 x 30 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 1:3:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-[2-methyl-8- (morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl]aniline (195 mg, 90%) as an off-white solid. MS ESI calculated for C 18 H 20 FN 5 O [M + H] + , 342.17, found 342.15; 1 H NMR (400 MHz, Chloroform-d) δ 8.02 (d, J = 1.4 Hz, 1H), 6.94 (d, J = 11.8 Hz, 1H), 6.71-6.68 (m, 1H), 6.58 (d, J=1.5 Hz, 1H), 3.98-3.96 (m, 4H), 3.54-3.52 (m, 4H), 2.60 (s, 3H), 2.15 (s, 3H). [00644] Step 3: To a stirred solution of 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-6-yl]aniline (100 mg, 0.29 mmol), Pd(dppf)Cl 2 ∙CH 2 Cl 2 (47 mg, 0.06 mmol) and Co2(CO)8 (30 mg, 0.09 mmol) in dioxane (2 mL) were added TEA (177 mg, 1.74 mmol) and 4-bromo-1-tert-butyl-5-fluoropyrazole (77 mg, 0.35 mmol) dropwise at room temperature. The reaction mixture was purged with nitrogen and stirred for 16 h at 90 °C. The resulting mixture was diluted with water (10 mL) and extracted with EtOAc (3 x 20 mL). The combined organic layers were washed with brine (2 x 15 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by Prep- TLC (PE/EA/EtOH, 8:3:1) to afford crude product. The crude product was further purified by Prep-HPLC with the following conditions: Column: YMC-Actus Triart C 18ExRS, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 27% B to 52% B in 8 min; Wave Length: 254nm/220nm; RT1: 6.2 min. The fractions containing the desired product were combined and concentrated to afford title compound (24 mg, 16%) as an off-white solid. MS ESI calculated for C 26 H 29 F 2 N 7 O 2 [M + H] + , 510.24, found 510.25; 1 H NMR (400 MHz, Chloroform-d) δ 8.36 (d, J = 8.0 Hz, 1H), 8.06-8.04 (m, 1H), 7.82 (d, J = 2.6 Hz, 1H), 7.68-7.64 (m, 1H), 7.09 (d, J = 11.6 Hz, 1H), 6.61 (s, 1H), 3.98-3.96 (m, 4H), 3.55-3.52 (m, 4H), 2.61 (s, 3H), 2.25 (s, 3H), 1.66 (s, 9H). [00645] Example 253: N-(1-(tert-Butyl)-5-fluoro-1H-pyrazol-4-yl)-2-fluoro-4-methy l-5-(8- morpholinoimidazo[1,2-a]pyridin-6-yl)benzamide [00646] Step 1: To a stirred solution of methyl 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]benzoate (230 mg, 0.62 mmol) in dioxane (4 mL) was added NH3∙H2O (4 mL) dropwise at room temperature. The reaction mixture was stirred for 48 h at room temperature. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]benzamide (190 mg, 63.20%) as a white solid. MS ESI calculated for C 19 H 19 FN 4 O 2. [M + H] + , 355.15, found 355.15; 1 H NMR (400 MHz, Chloroform-d) δ 8.04 (d, J = 8.2 Hz, 1H), 7.74 (d, J = 1.4 Hz, 1H), 7.61 (d, J = 1.3 Hz, 1H), 7.55 (d, J = 1.3 Hz, 1H), 7.09 (d, J = 12.6 Hz, 1H), 6.32 (d, J = 1.5 Hz, 1H), 3.99-3.92 (m, 4H), 3.59-3.52 (m, 4H), 2.35 (s, 3H). [00647] Step 2: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]benzamide (100 mg, 0.28 mmol), methyl[2-(methylamino)ethyl]amine (24.88 mg, 0.28 mmol), 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (74.86 mg, 0.34 mmol) and K3PO4 (125.78 mg, 0.59 mmol) in dioxane (0.5 mL) was added CuI (53.74 mg, 0.28 mmol) portionwise at room temperature. The reaction mixture was purged with nitrogen and stirred for 16 h at 100 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1) to afford a crude product which was further purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 19 x 250 mm, 5 μm; Mobile Phase A: Water (Plus 10 mmol/L NH4HCO3 + 0.05% NH3∙H2O), Mobile Phase B: ACN; Flow rate: 25 mL/min; Gradient: 37% B to 67% B in 8 min; Wave Length: 254nm/220nm; RT1: 7.43 min. The fractions containing the desired product were combined and concentrated to afford title compound (36.4 mg, 26%) as a white solid. MS ESI calculated for C26H28F2N6O2. [M + H] + , 495.22, found 495.30; 1 H NMR (400 MHz, DMSO-d6) δ 9.91 (s, 1H), 8.19 (d, J = 1.4 Hz, 1H), 7.89 (d, J = 1.2 Hz, 1H), 7.63-7.54 (m, 2H), 7.52 (d, J = 1.2 Hz, 1H), 7.34 (d, J = 11.4 Hz, 1H), 6.39 (d, J = 1.5 Hz, 1H), 3.84 (t, J = 4.8 Hz, 4H), 3.55 (t, J = 4.8 Hz, 4H), 2.35 (s, 3H), 1.54 (s, 9H). [00648] Example 260: N-(1-(tert-butyl)-5-fluoro-1H-pyrazol-4-yl)-2-fluoro-4-methy l-5-(8- morpholinoimidazo[1,2-b]pyridazin-6-yl)benzamide [00649] Step 1: To a stirred solution of 8-bromo-6-chloroimidazo[1,2-b]pyridazine (500.00 mg, 2.15 mmol) in EtOH (3.30 mL) was added morpholine (1.87 g, 21.51 mmol) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 3 h at room temperature under nitrogen atmosphere. The resulting mixture was filtered, the filter cake was washed with EtOH (3 x 10 mL) to afford 4-[6-chloroimidazo[1,2-b]pyridazin-8- yl]morpholine(500 mg, crude) as a light yellow solid. MS ESI calculated for C10H11ClN4O [M + H] + , 239.06, found 239.10. [00650] Step 2: To a stirred mixture of 4-{6-chloroimidazo[1,2-b]pyridazin-8-yl}morpholine (243.44 mg, 1.02 mmol) and methyl 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2- yl)benzoate (300 mg, 1.02 mmol) in THF (2 mL) and H2O (0.2 mL) were added K3PO4 (433.00 mg, 2.04 mmol) and XPhos Pd G2 (80.17 mg, 0.10 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen and stirred for 2 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The fractions containing the desired product were combined and concentrated to afford methyl 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-b]pyridaz in- 6-yl]benzoate (260 mg, 55%) as a brown solid. MS ESI calculated for C19H19FN4O3. [M + H] + , 371.04, found 371.15; 1 H NMR (400 MHz, Chloroform-d) δ 8.01 (d, J = 7.4 Hz, 1H), 7.87 (d, J = 1.2 Hz, 1H), 7.62 (d, J = 1.2 Hz, 1H), 7.11 (d, J = 11.4 Hz, 1H), 6.11 (s, 1H), 3.98-3.89 (m, 8H), 2.44 (s, 3H), 1.27 (s, 3H). [00651] Step 3: To a stirred mixture of methyl 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2- b]pyridazin-6-yl]benzoate (200 mg, 0.540 mmol) in 1,4-dioxane (2 mL) was added ammonium hydroxide (2 mL). The reaction mixture was stirred for 48 h at 40 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH 4:3:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-b]pyridaz in-6- yl]benzamide (90 mg, 46%) as a brown solid. MS ESI calculated for C18H18FN5O2 [M + H] + , 356.14, found 356.35; 1 H NMR (400 MHz, Chloroform-d) δ 8.20 (d, J = 8.1 Hz, 1H), 7.86 (d, J = 1.1 Hz, 1H), 7.65 (s, 1H), 7.12 (d, J = 12.6 Hz, 1H), 6.70 (d, J = 11.4 Hz, 1H), 4.03-3.93 (m, 8H), 2.46 (s, 3H). [00652] Step 4: To a stirred mixture of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-b]pyridaz in- 6-yl]benzamide (70 mg, 0.20 mmol), N, N-dimethylethane-1,2-diamine (17.6 mg, 0.20 mmol) and K 3 PO 4 (87.80 mg, 0.41 mmol) in 1,4-dioxane (1 mL) were added 4-bromo-1-(tert-butyl)-5- fluoro-1H-pyrazole (53.40 mg, 0.24 mmol) and CuI (37.51 mg, 0.20 mmol) at room temperature. The reaction mixture was purged with nitrogen and stirred for 16 h at 100 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The fractions containing the desired product were combined and concentrated to afford the title compound (37.7 mg, 37%) as a white solid. MS ESI calculated for C 25 H 27 F 2 N 7 O 2 [M + H] + , 496.22, found 496.35; 1 H NMR (400 MHz, DMSO- d6) δ 9.98 (s, 1H), 8.10 (d, J = 1.2 Hz, 1H), 7.72 (d, J = 7.4 Hz, 1H), 7.59 (d, J = 10.0, 1.9 Hz, 2H), 7.36 (d, J = 11.4 Hz, 1H), 6.40 (s, 1H), 4.04-3.97 (m, 4H), 3.81-3.74 (m, 4H), 2.40 (s, 3H), 1.54 (s, 9H). [00653] Example 263: N-{2-Fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyri din-6-yl]phenyl}- 2-[methyl(trifluoromethyl)amino]pyridine-4-carboxamide [00654] Step 1: To a stirred solution of 4-Bromo-N-methylpyridin-2-amine (2 g, 10.69 mmol) in THF (30 mL) was added NaOH (0.86 g, 21.39 mmol). The reaction mixture was stirred for 1 h at room temperature under nitrogen atmosphere and carbon disulfide (1.63 g, 21.39 mmol) was added dropwise at room temperature. The reaction mixture was allowed to stir for 16 h at room temperature followed by addition of CH3I (3.04 g, 21.39 mmol) dropwise at 0 °C. The reaction mixture was stirred for additional 6 h at room temperature. The resulting mixture was diluted with water (50 mL) and extracted with CH 2 Cl 2 (2 x 30 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 2:1). The fractions containing the desired product were combined and concentrated to afford N-(4-bromopyridin-2-yl)-N-methylmethylsulfanylcarbothioamide (1.8 g, 60%) as an off- white solid. MS ESI calculated for C8H9BrN2S2 [M + H] + , 276.94, 278.94, found 276.95, 278.95, 1 H NMR (400 MHz, DMSO-d 6 ) δ 8.26-8.24 (m, 1H), 7.57-7.48 (m, 1H), 7.41 (d, J = 1.6 Hz, 1H), 3.20-3.09 (m, 6H) [00655] Step 2: To a stirred solution of tetrabutylazanium dihydrofluoride fluoride (4.89 g, 16.24 mmol) and 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione (3.71 g, 12.99 mmol) in DCM (13 mL) was added N-(4-bromopyridin-2-yl)-N-methylmethylsulfanylcarbothioamide (900 mg, 3.25 mmol) dropwise at 0 °C. The reaction mixture was stirred for 4 h at 0 °C. The resulting mixture was basified to pH 10 with NaOH (aq.). The resulting mixture was diluted with water (30 mL) and extracted with EtOAc (3 x 30 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1). The fractions containing the desired product were combined and concentrated to afford 4-bromo-N-methyl-N- (trifluoromethyl)pyridin-2-amine (700 mg, 84%) as an off-white solid. MS ESI calculated for C 7 H 6 BrF 3 N 2 [M + H] + , 254.97, 256.97, found 254.80, 256.80; 1 H NMR (400 MHz, DMSO-d 6 ) δ 8.27 (d, J = 5.4 Hz, 1H), 7.48-7.42 (m, 1H), 7.37-7.35 (m, 1H), 3.20 (q, J = 2.0 Hz, 3H). [00656] Step 3: To a stirred solution of 2-fluoro-4-methyl-5-[8-(morpholin-4-yl)imidazo[1,2-a]pyridin - 6-yl]aniline (100 mg, 0.31 mmol), 4-bromo-N-methyl-N-(trifluoromethyl)pyridin-2-amine (78.14 mg, 0.31 mmol) and TEA (186.03 mg, 1.84 mmol) in dioxane (1.5 mL) were added Pd(dppf)Cl2∙CH2Cl2 (49.92 mg, 0.06 mmol) and Co2(CO)8 (31.43 mg, 0.09 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen and stirred for 16 h at 90 °C. The resulting mixture was diluted with water (40 mL) and extracted with EtOAc (2 x 50 mL). The combined organic layers were washed with brine (2 x 40 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by Prep- HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: Water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 32% B to 62% B in 7 min; Wave Length: 254 nm/220 nm; RT: 7 min. The fractions containing the desired product were combined and concentrated to afford the title compound (42.8 mg, 26%) as a white solid. MS ESI calculated for C26H24F4N6O2 [M + H] + , 529.19, found 529.35; 1 H NMR (400 MHz, DMSO-d6) δ 10.50 (s, 1H), 8.57 (d, J = 5.1 Hz, 1H), 8.16 (d, J = 1.4 Hz, 1H), 7.90 (d, J = 1.2 Hz, 1H), 7.65 (dd, J = 5.1, 1.4 Hz, 1H), 7.62-7.59 (m, 1H), 7.57-7.49 (m, 2H), 7.33 (d, J = 11.4 Hz, 1H), 6.37 (d, J = 1.5 Hz, 1H), 3.84-3.77 (t, J = 4.7 Hz, 4H), 3.55 (t, J = 4.7 Hz, 4H), 3.27 (q, J = 2.0 Hz, 3H), 2.31 (s, 3H). [00657] Example 265: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(2-methyl-8- morpholinoimidazo[1,2-b]pyridazin-6-yl)phenyl)-1H-pyrazole-4 -carboxamide [00658] Step 1: To a stirred mixture of 8-bromo-6-chloro-2-methylimidazo[1,2-b]pyridazine (950 mg, 3.85 mmol), Cesium carbonate (376.72 mg, 1.16 mmol) and RuPhos Pd G2 (299.36 mg, 0.39 mmol) in dioxane (10 mL) was added morpholine (335.78 mg, 3.85 mmol) dropwise at room temperature. The reaction mixture was purged with nitrogen and stirred for 2 h at 100 °C. The resulting mixture was diluted with water (50 mL) and extracted with EA (3 x 150 mL). The combined organic layers were washed with brine (2 x 80 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 4:1). The fractions containing the desired product were combined and concentrated to afford 4-{6-chloro-2-methylimidazo[1,2-b]pyridazin-8- yl}morpholine (820 mg, 84%) as a yellow solid. MS ESI calculated for C 11 H 13 ClN 4 O [M + H] + , 253.08, 255.08, found 253.00, 255.00; 1 H NMR (400 MHz, Chloroform-d) δ 7.51 (s, 1H), 6.07 (s, 1H), 4.01-3.87 (m, 8H), 2.43 (s, 3H). [00659] Step 2: To a stirred mixture of 4-{6-chloro-2-methylimidazo[1,2-b]pyridazin-8-yl}morpholine (0.8 g, 3.17 mmol), XPhos Pd G2 (0.25 g, 0.32 mmol) and K 3 PO 4 (2.02 g, 9.50 mmol) in THF (8 mL) and water (0.8 mL) was added 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)aniline (1.59 g, 6.33 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen and stirred for 3 h at 80 °C. The resulting mixture was diluted with water (50 mL) and extracted with EA (3 x 70 mL). The combined organic layers were washed with brine (2 x 50 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)imidazo[1,2- b]pyridazin-6-yl]aniline (470 mg, 43%) as a white solid. MS ESI calculated for C 18 H 20 FN 5 O [M + H]+, 342.17, found 342.15; 1 H NMR (400 MHz, Chloroform-d) δ 7.60 (s, 1H), 7.26 (s, 1H), 6.91 (d, J = 11.8 Hz, 1H), 6.82 (d, J = 9.1 Hz, 1H), 3.93-3.80 (m, 8H), 2.46 (s, 3H), 2.22 (s, 3H). [00660] Step 3: To a stirred mixture of 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)imidazo[1,2- b]pyridazin-6-yl]aniline (100 mg, 0.29 mmol), Pd(dppf)Cl 2 ·DCM (47.72 mg, 0.06 mmol) and Co2(CO)8 (30.05 mg, 0.09 mmol) in dioxane (1 mL) were added TEA (177.85 mg, 1.76 mmol) and 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (77.71 mg, 0.35 mmol). The reaction mixture was purged with nitrogen and stirred for 16 h at 90 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The residue purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 38% B to 68% B in 7 min; Wave Length: 254nm/220nm; RT1: 6.2 min. The fractions containing the desired product were combined and concentrated to afford the title compound (27.3 mg, 18%) as a white solid. MS ESI calculated for C 26 H 29 F 2 N 7 O 2 [M + H] + , 510.24, found 510.40; 1 H NMR (400 MHz, Chloroform-d) δ 8.46 (d, J = 8.1 Hz, 1H), 7.82 (d, J = 2.6 Hz, 1H), 7.67 (s, 1H), 7.61-7.56 (m, 1H), 7.06 (d, J = 11.6 Hz, 1H), 6.12 (s, 1H), 3.94-3.86 (m, 8H), 2.46 (s, 3H), 2.33 (s, 3H), 1.65 (s, 9H). [00661] Example 266: N-(1-(tert-butyl)-5-fluoro-1H-pyrazol-4-yl)-2-fluoro-5-(3-fl uoro-8- morpholinoimidazo[1,2-a]pyridin-6-yl)-4-methylbenzamide [00662] Step 1: To a stirred mixture of 4-{6-chloro-3-fluoroimidazo[1,2-a]pyridin-8-yl}morpholine (880 mg, 3.44 mmol) and methyl 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2- yl)benzoate (1.21 g, 4.13 mmol) in THF (10 mL) and H2O (1 mL) were added K3PO4 (2.19 g, 10.33 mmol) and 2nd generation XPhos precatalyst (270.81 mg, 0.34 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 2 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The fractions containing the desired product were combined and concentrated to afford methyl 2-fluoro-5-[3-fluoro-8-(morpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]-4-methylbenzoate (950 mg, 77%) as a brown solid. MS ESI calculated for C20H19F2N3O3 [M + H] + , 388.14, found 388.35; 1 H NMR (400 MHz, Chloroform- d) δ 7.87 (d, J = 7.4 Hz, 1H), 7.49 (d, J = 1.4 Hz, 1H), 7.17 (d, J = 7.2 Hz, 1H), 7.11 (d, J = 11.4 Hz, 1H), 6.25 (d, J = 1.5 Hz, 1H), 3.98-3.92 (m, 4H), 3.62-3.55 (m, 4H), 2.34 (s, 3H), 1.27 (s, 3H). [00663] Step 2: To a stirred solution of methyl 2-fluoro-5-[3-fluoro-8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]-4-methylbenzoate (950 mg, 2.45 mmol) in THF (4 mL), MeOH (4 mL) and water (4 mL) was added LiOH·H2O (360.15 mg, 8.58 mmol) in portions at room temperature. The reaction mixture was allowed to stir for 1 h at room temperature. The resulting mixture was concentrated in vacuo and acidified to pH 5 with HCl (aq.). The precipitated solids were collected by filtration and washed with water (3 x 10 mL) to afford 2-fluoro-5-[3-fluoro-8- (morpholin-4-yl)imidazo[1,2-a]pyridin-6-yl]-4-methylbenzoic acid (400 mg, crude) as an off- white solid. MS ESI calculated for C 19 H 17 F 2 N 3 O 3 [M + H] + , 374.12, found 374.25; 1 H NMR (400 MHz, Chloroform-d) δ 7.85 (d, J = 7.4 Hz, 1H), 7.48 (s, 1H), 7.23 (d, J = 6.6 Hz, 1H), 7.07 (d, J = 11.4 Hz, 1H), 6.32 (s, 1H), 3.93 (t, J = 4.8 Hz, 4H), 3.45 (t, J = 4.8 Hz, 4H), 2.28 (s, 3H). [00664] Step 3: To a stirred mixture of 2-fluoro-5-[3-fluoro-8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]-4-methylbenzoic acid (550 mg, 1.47 mmol) in DCM (6 mL) was added and oxalyl chloride (0.25 mL, 2.95 mmol) and DMF (cat.) dropwise at 0 °C. The reaction mixture was allowed to stir for 1 h at room temperature. To the above mixture was added NH 3 ·H 2 O (2 mL) dropwise at room temperature. The reaction mixture was allowed to stir for additional 5 min at room temperature. The resulting mixture was diluted with water (15 mL) and extracted with DCM (3 x 20 mL). The combined organic layers were washed with brine (2 x 15 mL), dried over anhydrous Na2SO4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (DCM/MeOH, 10:1). The fractions containing the desired product were combined and concentrate to afford 2-fluoro-5-[3-fluoro-8-(morpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]-4-methylbenzamide (400 mg, 69%) as a yellow solid. MS ESI calculated for C 19 H 18 F 2 N 4 O 2 [M + H] + , 373.14, found 373.37; 1 H NMR (400 MHz, Chloroform- d) δ 8.06 (d, J = 8.1 Hz, 1H), 7.53 (s, 1H), 7.21 (d, J = 6.5 Hz, 1H), 7.12 (d, J = 12.6 Hz, 1H), 6.71 (d, J = 11.6 Hz, 1H), 4.00 (t, J = 4.8 Hz, 4H), 3.56 (t, J = 4.8 Hz, 4H), 2.37 (s, 3H), 1.27 (s, 2H). [00665] Step 4: To a stirred mixture of 2-fluoro-5-[3-fluoro-8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]-4-methylbenzamide (400 mg, 1.07 mmol) and K3PO4 (478.82 mg, 2.26 mmol) in 1,4- dioxane (5 mL) were added 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (261.22 mg, 1.18 mmol) and CuI (204.58 mg, 1.07 mmol) at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 16 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The fractions containing the desired product were combined and concentrated to afford the title compound (166 mg, 29%) as a white solid. MS ESI calculated for C26H27F3N6O2 [M + H] + , 513.21, found 513.35; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.91 (s, 1H), 7.86-7.83 (m, 1H), 7.63 (d, J = 7.3 Hz, 1H), 7.57 (d, J = 2.4 Hz, 1H), 7.33 (dd, J = 13.0, 9.3 Hz, 2H), 6.40 (s, 1H), 3.80 (t, J = 4.6 Hz, 4H), 3.57 (t, J = 4.6 Hz, 4H), 2.36 (s, 3H), 1.55 (s, 9H). [00666] Example 267: N-(1-(tert-butyl)-5-fluoro-1H-pyrazol-4-yl)-2-fluoro-4-methy l-5-(2-methyl-8- morpholinoimidazo[1,2-a]pyridin-6-yl)benzamide [00667] Step 1: To a stirred mixture of 4-{6-bromo-2-methylimidazo[1,2-a]pyridin-8-yl}morpholine (300 mg, 1.01 mmol), Pd(dppf)Cl 2 ·CH 2 Cl 2 (82 mg, 0.10 mmol) and K 2 CO 3 (419 mg, 3.04 mmol) in dioxane (4 mL) and water (1 mL) was added methyl 2-fluoro-4-methyl-5-(4,4,5,5- tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (297 mg, 1.01 mmol). The reaction mixture was purged with nitrogen and stirred for 2 h at 80 °C. The resulting mixture was diluted with water (20 mL) and extracted with EA (3 x 30 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo. The residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The fractions containing the desired product were combined and concentrated to afford methyl 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]benzoate (225 mg, 57%) as an off-white solid. MS ESI calculated for C 21 H 22 FN 3 O 3 [M + H] + , 384.16, found 384.15; 1 H NMR (400 MHz, Chloroform-d) δ 7.86 (d, J=7.4 Hz, 1H), 7.65 (m, 1H), 7.31-7.28 (m, 1H), 7.11 (d, J=11.4 Hz, 1H), 6.30-6.26 (m, 1H), 4.02-4.00 (t, J=4.8 Hz, 4H), 3.94 (s, 3H), 3.55-3.53 (t, J=4.8 Hz, 4H), 2.50 (s, 3H), 2.33 (s, 3H). [00668] Step 2: To a stirred solution of methyl 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]benzoate (225 mg, 0.59 mmol) in MeOH (2 mL), THF (2 mL) and H2O (2 mL) was added LiOH·H2O (73 mg, 1.76 mmol). The reaction mixture was stirred for 16 h at room temperature. The resulting mixture was concentrated in vacuo to afford 2- fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)imidazo[1,2-a] pyridin-6-yl]benzoic acid (370 mg, crude) as a brown solid. MS ESI calculated for C 20 H 20 FN 3 O 3 [M + H] + , 370.15, found 370.15. [00669] Step 3: To a stirred solution of 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]benzoic acid (370 mg, 1.00 mmol) in DCM (40 mL) was added oxalyl chloride (190 mg, 1.50 mmol) and DMF (cat.) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 0.5 h at room temperature. The resulting mixture was quenched with NH 3 ·H 2 O (5 mL, 30%) at room temperature. The resulting mixture was concentrated in vacuo and the residue purified by reversed phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH4HCO3), 10% to 75% gradient in 20 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]benzamide (110 mg, 29%) as an off-white solid. MS ESI calculated for C20H21FN4O2 [M + H] + , 369.16, found 369.15. [00670] Step 4: To a stirred mixture of 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]benzamide (50 mg, 0.14 mmol), methyl[2-(methylamino)ethyl]amine (12.32 mg, 0.14 mmol) and K3PO4 (60.50 mg, 0.29 mmol) in 1,4-dioxane (1 mL) were added 4-bromo-1- (tert-butyl)-5-fluoro-1H-pyrazole (33.00 mg, 0.15 mmol) and CuI (25.85 mg, 0.14 mmol). The reaction mixture was purged with nitrogen and stirred for 16 h at 100 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The fractions containing the desired product were combined and concentrated to afford the title compound (19.0 mg, 27%) as a white solid. MS ESI calculated for C 27 H 30 F 2 N 6 O 2 [M + H] + , 509.24, found 509.35; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.94-9.89 (m, 1H), 8.10 (d, J = 1.5 Hz, 1H), 7.64-7.54 (m, 3H), 7.34 (d, J = 11.3 Hz, 1H), 6.36 (d, J = 1.5 Hz, 1H), 3.84 (t, J = 4.8 Hz, 4H), 3.53 (t, J = 4.8 Hz, 4H), 2.37-2.32 (m, 6H), 1.55 (s, 9H). [00671] Example 273: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-5-(3-fluoro-2-methyl-8- morpholinoimidazo[1,2-a]pyridin-6-yl)-4-methylphenyl)-1H-pyr azole-4-carboxamide [00672] Step 1: To a stirred solution of 3-bromo-5-chloropyridin-2-amine (4 g, 19.28 mmol) in EtOH (40 mL) was added bromoacetone (5.28 g, 38.56 mmol) dropwise at room temperature. The reaction mixture was stirred for 16 h at 85 °C. The resulting mixture was concentrated in vacuo and the resulting mixture was quenched with saturated aqueous NaHCO 3 (150 mL) and extracted with EA (3 x 100 mL). The combined organic layers were washed with brine (2 x 50 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1) to afford a crude product which (3.5 g) was purified by trituration with (PE/EA, 8:1, 20 mL) to afford 8-bromo-6- chloro-2-methylimidazo[1,2-a]pyridine (2.9 g, 61%) as a pink solid. MS ESI calculated for C8H6BrClN2 [M + H] + , 244.94, 246.94, found 244.95, 246.95; 1 H NMR (400 MHz, Chloroform- d) δ 8.08 (d, J = 1.6 Hz, 1H), 7.41-7.40 (m, 2H), 2.49 (s, 3H). [00673] Step 2: To a stirred solution of Selectfluor (4.60 g, 12.99 mmol) and DMAP (1.44 g, 11.81 mmol) in H2O (1 mL) was added 8-bromo-6-chloro-2-methylimidazo[1,2-a]pyridine (2.9 g, 11.81 mmol) in CHCl 3 (4 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 2 h at 0 °C and stirred for 16 h at room temperature under nitrogen atmosphere. The resulting mixture was diluted with water (100 mL) and extracted with DCM (3 x 200 mL). The combined organic layers were washed with saturated brine (2 x 100 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 2:1). The fractions containing the desired product were combined and concentrated to afford 8-bromo-6-chloro-3-fluoro-2- methylimidazo[1,2-a]pyridine (1.7 g, 55%) as an off-white solid. MS ESI calculated for C 8 H 5 BrClFN 2 [M + H] + , 262.93, 264.93, found 262.90, 264.90; 1 H NMR (400 MHz, Chloroform-d) δ 7.92 (d, J = 1.6 Hz, 1H), 7.39 (d, J = 2.0 Hz, 1H), 2.47 (s, 3H). [00674] Step 3: To a stirred solution of 8-bromo-6-chloro-3-fluoro-2-methylimidazo[1,2-a]pyridine (1.7 g, 6.45 mmol), morpholine (0.56 g, 6.45 mmol) and Cs 2 CO 3 (6.31 g, 19.36 mmol) in dioxane (2 mL) was added RuPhos G2 (0.50 g, 0.65 mmol) at room temperature. The reaction mixture was purged with nitrogen and stirred for 3 h at 65 °C. The resulting mixture was diluted with water (150 mL) and extracted with ethyl acetate (3 x 100 mL). The combined organic layers were washed with brine (70 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1). The fractions containing the desired product were combined and concentrated to afford 4- {6-chloro-3-fluoro-2-methylimidazo[1,2-a]pyridin-8-yl}morpho line (950 mg, 55%) as an off- white solid. MS ESI calculated for C12H13ClFN3O [M + H] + , 270.07, 272.07, found 270.10, 272.10; 1 H NMR (400 MHz, Chloroform-d) δ 7.53 (d, J = 2.0 Hz, 1H), 6.27 (d, J = 1.6 Hz, 1H), 3.96-3.94 (m, 4H), 3.57-3.54 (m, 4H), 2.37 (s, 3H). [00675] Step 4: To a stirred mixture of 4-{6-chloro-3-fluoro-2-methylimidazo[1,2-a]pyridin-8- yl}morpholine (200 mg, 0.74 mmol), XPhos Pd G2 (58.35 mg, 0.07 mmol) and K3PO4 (472.22 mg, 2.23 mmol) in THF (0.4 mL) and water (0.04 mL) was added 2-fluoro-4-methyl-5-(4,4,5,5- tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (558.64 mg, 2.23 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen and stirred for 2 h at 80 °C. The resulting mixture was diluted with water (100 mL) and extracted with EtOAc (3 x 100 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 5:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-5-[3-fluoro-2-methyl-8- (morpholin-4-yl)imidazo[1,2-a]pyridin-6-yl]-4-methylaniline (240 mg, 90%) as a pink solid. MS ESI calculated for C 19 H 20 F 2 N 4 O [M + H] + , 359.16, found 359.15; 1 H NMR (400 MHz, Chloroform-d) δ 7.41-7.37 (m, 1H), 6.91 (d, J = 11.7 Hz, 1H), 6.70 (d, J = 9.0 Hz, 1H), 6.32- 6.28 (m, 1H), 3.99 (m, 4H), 3.50 (m, 4H), 2.45 (s, 3H), 2.15 (s, 3H). [00676] Step 5: To a stirred mixture of 2-fluoro-5-[3-fluoro-2-methyl-8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]-4-methylaniline (100 mg, 0.28 mmol), Pd(dppf)Cl2·DCM (45.46 mg, 0.06 mmol) and Co2(CO)8 (28.63 mg, 0.08 mmol) in dioxane (1 mL) were added TEA (169.41 mg, 1.67 mmol) and 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (74.02 mg, 0.34 mmol) dropwise at room temperature. The reaction mixture was purged with nitrogen and stirred for additional 16 h at 90 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1) to afford a crude product which was further purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 40% B to 70% B in 7 min; Wave Length: 254 nm/220 nm; RT1: 6. min 7. The fractions containing the desired product were combined and concentrated to afford the title compound (3.2 mg, 2%) as a white solid. MS ESI calculated for C 27 H 29 F 3 N 6 O 2 [M + H] + , 527.23, found 527.35; 1 H NMR (400 MHz, Chloroform-d) δ 8.34 (d, J = 8.0 Hz, 1H), 7.82 (d, J = 2.8 Hz, 1H), 7.66-7.63 (m, 1H), 7.45-7.41 (m, 1H), 7.06 (d, J = 12.0 Hz, 1H), 6.28 (s, 1H), 3.98-3.95 (m, 4H), 3.53-3.49 (m, 4H), 2.42 (s, 3H), 2.25 (s, 3H), 1.66 (s, 9H). [00677] Example 274: 1-(tert-Butyl)-5-fluoro-N-(3-(3-fluoro-2-methyl-8-morpholino imidazo[1,2- a]pyridin-6-yl)-4-methylphenyl)-1H-pyrazole-4-carboxamide [00678] Step 1: To a stirred solution of 4-{6-chloro-3-fluoro-2-methylimidazo[1,2-a]pyridin-8- yl}morpholine (200 mg, 0.74 mmol), XPhos Pd G2 (58 mg, 0.07 mmol) and K 3 PO 4 (472 mg, 2.23 mmol) in THF (2 mL) and water (0.2 mL) was added 4-methyl-3-(4,4,5,5-tetramethyl- 1,3,2-dioxaborolan-2-yl)aniline (0.89 mmol, 206.90 mg) at room temperature. The reaction mixture was purged with nitrogen and stirred for 2 h at 80 °C. The resulting mixture was diluted with water (30 mL) and extracted with Ethyl acetate (3 x 50 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous Sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The fractions containing the desired product were combined and concentrated to afford 3-[3-fluoro-2-methyl-8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6-yl]-4- methylaniline (231.8 mg, 91%) as a dark green oil. MS ESI calculated for C19H21FN4O [M + H] + , 341.17, found 341.20; 1 H NMR (400 MHz, Chloroform-d) δ 7.42-7.38 (m, 1H), 7.07 (d, J = 8.0 Hz, 1H), 6.69-6.59 (m, 2H), 6.31-6.28 (m, 1H), 4.00-3.93 (m, 4H), 3.55-3.49 (m, 4H), 2.41 (s, 3H), 2.16 (s, 3H). [00679] Step 2: To a stirred mixture of 3-[3-fluoro-2-methyl-8-(morpholin-4-yl)imidazo[1,2-a]pyridin -6- yl]-4-methylaniline (100 mg, 0.29 mmol), Co 2 (CO) 8 (28.19 mg, 0.09 mmol) and Pd(dppf)Cl2·DCM (48 mg, 0.06 mmol) in dioxane (1 mL) was added TEA (178 mg, 1.76 mmol) and 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (78 mg, 0.35 mmol). The reaction mixture was purged with nitrogen and stirred for 16 h at 90 °C. The resulting mixture was concentrated under reduced product. The residue purified by Prep-TLC (PE/EA/EtOH, 8:3:1) to afford a crude product which (100 mg) was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 31% B to 61% B in 10 min; Wave Length: 254 nm/220 nm; RT1: 10.5 min. The fractions containing the desired product were combined and concentrated to afford the title compound (8.1 mg, 5%) as a brown solid. MS ESI calculated for C 27 H 30 F 2 N 6 O 2 [M + H] + , 509.24, found 509.40; 1 H NMR (400 MHz, Chloroform-d) δ 7.82 (d, J = 2.4 Hz, 1H), 7.53-7.40 (m, 4H), 7.27-7.25 (m, 1H), 6.30 (s, 1H), 3.97-3.96 (m, 4H), 3.54-3.53 (m, 4H), 2.41 (s, 3H), 2.26 (s, 3H), 1.65-1.48 (m, 9H). [00680] Example 275: 1-(tert-Butyl)-5-fluoro-N-(3-(3-fluoro-2-methyl-8-morpholino imidazo[1,2- a]pyridin-6-yl)-4-methylphenyl)-1H-pyrazole-4-carboxamide [00681] Step 1: To a stirred mixture of 4-{6-chloro-3-fluoro-2-methylimidazo[1,2-a]pyridin-8- yl}morpholine (300 mg, 1.11 mmol) and methyl 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)benzoate (327.17 mg, 1.11 mmol) in THF (4 mL) and water (1 mL) were added XPhos Pd G2 (87.52 mg, 0.11 mmol) and K 3 PO 4 (708.34 mg, 3.33 mmol) in portions at room temperature. The reaction mixture was degassed with nitrogen atmosphere three times and stirred for 2 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (CH 2 Cl 2 /MeOH, 20:1). The fractions containing the desired product were combined and concentrated to afford methyl 2-fluoro-5-[3-fluoro-2- methyl-8-(morpholin-4-yl)imidazo[1,2-a]pyridin-6-yl]-4-methy lbenzoate (240 mg, 53%) as a grey white solid. MS ESI calculated for C21H21F2N3O3. [M + H] + , 402.16, found 402.20; 1 H NMR (400 MHz, Chloroform-d) δ 7.84 (d, J = 7.4 Hz, 1H), 7.41-7.39 (m, 1H), 7.08 (d, J = 11.4 Hz, 1H), 6.22-6.18 (m, 1H), 3.97 (t, J = 4.8 Hz, 4H), 3.93 (s, 3H), 3.54 (t, J = 4.8 Hz, 4H), 2.42 (s, 3H), 2.32 (s, 3H). [00682] Step 2: To a stirred solution of methyl 2-fluoro-5-[3-fluoro-2-methyl-8-(morpholin-4- yl)imidazo[1,2-a]pyridin-6-yl]-4-methylbenzoate (140 mg, 0.34 mmol) in THF (3 mL) and MeOH (3 mL) was added LiOH·H2O (73.17 mg, 1.74 mmol) in H2O (3 mL) dropwise at room temperature. The reaction mixture was stirred for 2 h at room temperature. The resulting mixture was concentrated in vacuo and the residue was acidified to pH 2 with 3 M HCl (aq.). The precipitated solids were collected by filtration and washed with water (3 x 5 mL). The resulting solid was dried in vacuo to afford 2-fluoro-5-[3-fluoro-2-methyl-8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]-4-methylbenzoic acid (100 mg, 74%) as an off-white solid. MS ESI calculated for C20H19F2N3O3. [M + H] + , 388.14, found 388.05; 1 H NMR (400 MHz, DMSO-d6) δ 13.19 (s, 1H), 7.79-7.72 (m, 2H), 7.31 (d, J = 11.9 Hz, 1H), 6.33 (d, J = 1.5 Hz, 1H), 3.82 (t, J = 4.8 Hz, 4H), 3.53 (t, J = 4.8 Hz, 4H), 2.38-2.25 (m, 6H). [00683] Step 3: To a stirred solution of 2-fluoro-5-[3-fluoro-2-methyl-8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]-4-methylbenzoic acid (80 mg, 0.21 mmol) in DCM (5 mL) were added oxalyl chloride (52.42 mg, 0.41 mmol) and DMF (cat.) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 30 min at room temperature under nitrogen atmosphere. The resulting mixture was quenched with NH3·H2O at room temperature. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (CH 2 Cl 2 /MeOH, 10:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-5-[3-fluoro-2-methyl-8-(morpholin-4-yl)imidazo[1,2- a]pyridin- 6-yl]-4-methylbenzamide (30 mg, 37%) as an off-white solid. MS ESI calculated for C 20 H 20 F 2 N 4 O 2. [M + H] + , 387.16, found 387.35. [00684] Step 4: To a stirred mixture of 2-fluoro-5-[3-fluoro-2-methyl-8-(morpholin-4-yl)imidazo[1,2- a]pyridin-6-yl]-4-methylbenzamide (30 mg, 0.08 mmol), methyl[2-(methylamino)ethyl]amine (6.84 mg, 0.08 mmol), CuI (14.79 mg, 0.08 mmol) and K3PO4 (34.61 mg, 0.16 mmol) in dioxane (1 mL) was added 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (20.60 mg, 0.09 mmol) at room temperature. The reaction mixture was degassed with nitrogen atmosphere three times and stirred for 2 h at 100 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography, eluted with (CH2Cl2/MeOH, 20:1) to afford a crude product which was further purified by prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 40% to 70% in 7 min; Wave Length: 254 nm/220 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (4.5 mg, 10%) as an off-white solid. MS ESI calculated for C27H29F3N6O2 [M + H] + , 527.23, found 527.40; 1 H NMR (400 MHz, Chloroform- d) δ 8.09 (d, J = 8.1 Hz, 1H), 7.96 (d, J = 15.7 Hz, 1H), 7.77 (d, J = 2.3 Hz, 1H), 7.48-7.43 (m, 1H), 7.14 (d, J = 12.7 Hz, 1H), 6.32 (s, 1H), 4.01-3.97 (m, 4H), 3.49-3.45 (m, 4H), 2.47 (s, 3H), 2.36 (s, 3H), 1.62 (s, 9H). [00685] Example 282: 1-(tert-Butyl)-5-fluoro-N-(2-fluoro-4-methyl-5-(2-methyl-5-m orpholino- [1,2,4]triazolo[1,5-a]pyridin-7-yl)phenyl)-1H-pyrazole-4-car boxamide [00686] Step 1: To a stirred solution of 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (2 g, 9.05 mmol) in THF (25 mL) was added n-BuLi (3.80 mL, 9.50 mmol, 2.5 M in hexane) at -78 °C under nitrogen atmosphere. The reaction mixture was stirred for 1 h at -78 °C followed by addition of propyl carbonochloridate (1.16 g, 9.50 mmol) in THF (5 mL). The reaction mixture was stirred for another 1 h at -78 °C. The resulting mixture was quenched with sat. NH4Cl (aq.) (10 mL) and extracted with EtOAc (2 x 50 mL). The combined organic layers were washed with brine (50 mL), dried over anhydrous Na2SO4. The residue purified by silica gel column chromatography, eluted with PE/EA (4/1). The fractions containing the desired product were combined and concentrated to afford Propyl 1-tert-butyl-5-fluoropyrazole-4-carboxylate (1.26 g, 61%) as a colorless oil. MS ESI calculated for C 11 H 17 FN 2 O 2 [M + H] + , 229.13, found 229.15; 1 H NMR (400 MHz, DMSO-d6) δ 7.78 (d, J = 2.5 Hz, 1H), 4.13 (t, J = 6.6 Hz, 2H), 1.65-1.58 (m, 2H), 1.55 (s, 9H), 0.93 (t, J = 7.4 Hz, 3H). [00687] Step 2: To a stirred solution of amino 2,4,6-trimethylbenzenesulfonate (7.92 g, 36.81 mmol) in DCM (90 mL) was added 4,6-dichloropyridin-2-amine (3 g, 18.41 mmol) in DCM (90 mL) dropwise at 0 °C. The reaction mixture was stirred for 2 h at 50 °C. The resulting mixture was concentrated in vacuo and the residue was diluted with DCM (40 mL). The resulting mixture was filtered, the filter cake washed with DCM (3 x 50 mL). The filtrate was concentrated in vacuo to afford 1,2-diamino-4,6-dichloropyridin-1-ium 2,4,6-trimethylbenzenesulfonate (4.5 g, crude) as an off-white solid. MS ESI calculated for C14H17Cl2N3O3[M + H] + , 378.04, found 378.00. [00688] Step 3: To a stirred solution of 1,2-diamino-4,6-dichloropyridin-1-ium 2,4,6- trimethylbenzenesulfonate (4.4 g, 11.63 mmol) in Ac2O (11 mL) was added TsOH (0.40 g, 2.33 mmol). The reaction mixture was stirred for 2 h at 100 °C. The resulting mixture was diluted with water (100 mL) and extracted with EtOAc (3 x 150 mL). The combined organic layers were washed with brine (2 x 150 mL), dried over anhydrous Na2SO4, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 8:3:1). The fractions containing the desired product were combined and concentrated to afford 5,7-dichloro-2-methyl-[1,2,4]triazolo[1,5-a]pyridine (640 mg, 27%) as an off-white solid. MS ESI calculated for C7H5Cl2N3 [M + H] + , 201.99, 203.98, found 201.85, 203.85; 1 H NMR (400 MHz, DMSO-d 6 ) δ 7.62-7.61 (d, J = 2.0 Hz, 1H), 7.09-7.08 (d, J = 2.0 Hz, 1H), 2.64 (s, 3H). [00689] Step 4: To a stirred solution of 5,7-dichloro-2-methyl-[1,2,4]triazolo[1,5-a]pyridine (0.61 g, 3.02 mmol) and DIEA (1.17 g, 9.06 mmol) in DMSO (10 mL) was added morpholine (0.26 g, 3.02 mmol). The reaction mixture was stirred for 2 h at 130 °C. The resulting mixture was allowed to cool to room temperature. The resulting mixture was diluted with water (150 mL) and extracted with EtOAc (3 x 150 mL). The combined organic layers were washed with brine (2 x 150 mL), dried over anhydrous Na 2 SO 4 , and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The fractions containing the desired product were combined and concentrated to afford 4-{7-chloro-2-methyl- [1,2,4]triazolo[1,5-a]pyridin-5-yl}morpholine (550 mg, 72%) as an off-white solid. MS ESI calculated for C 11 H 13 ClN 4 O [M + H]+, 253.08, 255.08, found 253.05, 255.05; 1 H NMR (400 MHz, Chloroform-d) δ 7.30-7.29 (d, J = 1.9 Hz, 1H), 6.27-6.26 (d, J = 2.0 Hz, 1H), 4.00-3.98 (m, 4H), 3.52-3.50 (m, 4H), 2.59 (s, 3H). [00690] Step 5: To a stirred solution of 4-{7-chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyridin-5- yl}morpholine (240 mg, 0.95 mmol), XPhos Pd G2 (74 mg, 0.10 mmol) and 2-fluoro-4-methyl- 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (286 mg, 1.14 mmol) in THF (3 mL) was added K 3 PO 4 (0.5 M, 6 mL). The reaction mixture was purged with nitrogen and stirred for 2 h at 40 °C. The resulting mixture was diluted with water (20 mL) and extracted with EtOAc (3 x 30 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous Sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 8:3:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-[2-methyl-5- (morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-7-yl]aniline (350 mg, 91%) as a brown solid. MS ESI calculated for C18H20FN5O [M + H] + , 342.17, found 342.15; 1 H NMR (400 MHz, Chloroform-d) δ 7.19 (d, J = 1.6 Hz, 1H), 6.93 (d, J = 11.8 Hz, 1H), 6.72 (d, J = 9.0 Hz, 1H), 6.22 (d, J = 1.4 Hz, 1H), 4.01-3.98 (m, 4H), 3.50-3.48 (m, 4H), 2.62 (s, 3H), 2.16 (s, 3H). [00691] Step 6: A solution of 2-fluoro-4-methyl-5-[2-methyl-5-(morpholin-4-yl)-[1,2,4]tria zolo[1,5- a]pyridin-7-yl]aniline (60 mg, 0.18 mmol) in Lithium bis(trimethylsilyl)amide (2 mL) was stirred for 1 h at 0 °C under nitrogen atmosphere. To the above mixture was added propyl 1-tert- butyl-5-fluoropyrazole-4-carboxylate (60 mg, 0.26 mmol) in THF (4 mL) dropwise at 0 °C and allowed to stir for additional 1 h at room temperature. The reaction mixture was quenched with sat. NH 4 Cl (aq.) (10 mL) and extracted with EA (3 x 20 mL). The combined organic layers were washed with brine (2 x 10 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 12:1:3) to afford a crude product which was further purified by reversed phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH4HCO3), 10% to 50% gradient in 20 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (8.9 mg, 9%) as an off-white solid. MS ESI calculated for C 26 H 29 F 2 N 7 O 2 [M + H] + , 510.24, found 510.25; 1 H NMR (400 MHz, Chloroform-d) δ 8.35 (d, J = 8.0 Hz, 1H), 7.82 (d, J = 2.4 Hz, 1H), 7.68-7.65 (m, 1H), 7.26-7.22 (m, 1H), 7.07 (d, J = 11.6 Hz, 1H), 6.26 (d, J = 1.6 Hz, 1H), 4.01-3.99 (m, 4H), 3.51-3.49 (m, 4H), 2.63 (s, 3H), 2.26 (s, 3H), 1.66 (d, J = 1.2 Hz, 9H). [00692] Example 283: N-(1-(tert-butyl)-5-fluoro-1H-pyrazol-4-yl)-2-fluoro-4-methy l-5-(2-methyl-5- morpholino-[1,2,4]triazolo[1,5-a]pyridin-7-yl)benzamide [00693] Step 1: To a stirred solution of tert-butyl carbamate (1.59 g, 13.57 mmol) and CuI (1.72 g, 9.05 mmol) and K 3 PO 4 (4.03 g, 19.00 mmol) and 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (2 g, 9.05 mmol) in dioxane (20 mL) was added methyl[2-(methylamino)ethyl]amine (0.97 mL, 9.05 mmol) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was stirred for 16 h at 100 °C under nitrogen atmosphere. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 5:1). The fractions containing the desired product were combined and concentrated to afford tert-butyl (1-(tert- butyl)-5-fluoro-1H-pyrazol-4-yl)carbamate (600 mg, 25%) as a white solid. MS ESI calculated for C12H20FN3O2 [M + H] + , 258.15, found 258.15. [00694] Step 2: To a stirred solution of tert-butyl (1-(tert-butyl)-5-fluoro-1H-pyrazol-4-yl)carbamate (240 mg, 0.93 mmol) in CH 2 Cl 2 (1.8 mL) was added TFA (0.6 mL) dropwise at room temperature. The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was basified to pH 8 with saturated NaHCO3 (aq.) and extracted with DCM (3 x 40 mL). The combined organic layers were dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated in vacuo to afford 1-(tert-butyl)-5-fluoro-1H-pyrazol-4-amine (140 mg, 61%) as a light-yellow oil. MS ESI calculated for C7H12FN3 [M + H] + , 158.10, found 158.30; 1 H NMR (400 MHz, DMSO-d6) δ 6.94 (d, J = 3.3 Hz, 1H), 1.46 (d, J = 1.5 Hz, 9H). [00695] Step 3: To a stirred mixture of 4-{7-chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyridin-5- yl}morpholine (660 mg, 2.61 mmol), 4,4,4',4',5,5,5',5'-octamethyl-2,2'-bi(1,3,2-dioxaborolane) (994.86 mg, 3.92 mmol) and KOAc (768.98 mg, 7.83 mmol) in dioxane (7 mL) was added XPhos Pd G2 (205.50 mg, 0.26 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen and stirred for 2 h at 100 °C. The resulting mixture was filtered, the filter cake washed with EA (3 x 20 mL) and the filtrate concentrated in vacuo to afford 2- methyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-7-yl boronic acid (1.8 g, crude) as a black oil. MS ESI calculated for C 11 H 15 BN 4 O 3 [M + H] + , 263.12, found 263.05. [00696] Step 4: To a stirred solution of 2-methyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-7- ylboronic acid (600 mg, 2.29 mmol), K3PO4 (728 mg, 3.43 mmol) and methyl 5-bromo-2- fluoro-4-methylbenzoate (282 mg, 1.15 mmol) in THF (8 mL) and H 2 O (2 mL) was added Pd(dppf)Cl 2 ·CH 2 Cl 2 (93 mg, 0.11 mmol). The reaction mixture was purged with nitrogen and stirred for 2 h at 80 °C. The resulting mixture was diluted with water (10 mL) and extracted with EtOAc (3 x 30 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (0.1% TFA), 20 % to 95% gradient in 20 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford methyl 2-fluoro-4-methyl-5-[2-methyl-5-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-7-yl]benzoate (510 mg, 98%) as a brown solid. MS ESI calculated for C20H21FN4O3 [M + H]+, 385.16, found 385.15; 1 H NMR (400 MHz, Chloroform-d) δ 7.85- 7.82 (m, 1H), 7.68-7.64 (m, 1H), 7.14 (d, J = 11.4 Hz, 1H), 6.45 (m, 1H), 3.98 (s, 3H), 3.95-3.90 (m, 4H), 3.58-3.54 (m, 4H), 2.74 (s, 3H), 2.35 (s, 3H). [00697] Step 5: To a solution of methyl 2-fluoro-4-methyl-5-[2-methyl-5-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-7-yl]benzoate (510 mg, 1.33 mmol) in THF (5 mL), MeOH (5 mL) and H 2 O (5 mL) was added LiOH·H 2 O (167 mg, 3.98 mmol). The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was acidified to pH 5 with HCl (3 M, aq.). The resulting mixture was concentrated in vacuo and the residue purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 0.1% TFA), 15 % to 95 % gradient in 15 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4- methyl-5-[2-methyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a] pyridin-7-yl]benzoic acid (152 mg, 29%) as an off-white solid. MS ESI calculated for C 19 H 19 FN 4 O 3 [M + H]+, 371.14, found 371.05; 1 H NMR (400 MHz, Chloroform-d) δ 7.84-7.80 (m, 1H), 7.57-7.53 (m, 1H), 7.11 (d, J = 11.2 Hz, 1H), 6.42-6.40 (m, 1H), 4.00-3.96 (m, 4H), 3.58-3.54 (m, 4H), 2.76 (s, 3H), 2.35 (s, 3H). [00698] Step 6: A solution of added 2-fluoro-4-methyl-5-[2-methyl-5-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-7-yl]benzoic acid (80 mg, 0.22 mmol) in T3P (1 mL, 50% in EA) was stirred for 0.5 h at room temperature. To the above mixture was added 1-(tert-butyl)-5- fluoro-1H-pyrazol-4-amine (50 mg, 0.32 mmol) in pyridine (1 mL) dropwise at room temperature. The reaction mixture was stirred for additional 2 h at 60 °C. The resulting mixture was concentrated in vacuo and the residue purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH4HCO3), 15 % to 80% gradient in 20 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (30 mg, 27%) as an off-white solid. MS ESI calculated for C 26 H 29 F 2 N 7 O 2 [M + H] + , 510.24, found 510.45; 1 H NMR (400 MHz, Chloroform-d) δ 8.12 (d, J = 8.0 Hz, 1H), 8.01 (d, J = 15.5 Hz, 1H), 7.78 (d, J = 2.3 Hz, 1H), 7.28-7.26 (m, 1H), 7.17 (d, J = 12.8 Hz, 1H), 6.28 (s, 1H), 4.01 (t, J = 4.8 Hz, 4H), 3.54 (t, J = 4.8 Hz, 4H), 2.67 (s, 3H), 2.37 (s, 3H), 1.62 (s, 9H). [00699] Example 285: N-(1-(tert-Butyl)-5-fluoro-1H-pyrazol-4-yl)-2-fluoro-4-methy l-5-(2-methyl-8- morpholino-[1,2,4]triazolo[1,5-a]pyridin-6-yl)benzamide
[00700] Step 1: To a stirred solution of 4-{6-chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyridin-8- yl}morpholine (1 g, 3.96 mmol), bis(pinacolato)diboron (1.51 g, 5.94 mmol), KOAc (1.17 g, 11.87 mmol) and XPhos Pd G2 (311.37 mg, 0.40 mmol) in dioxane (20 mL) at room temperature. The reaction mixture was purged with nitrogen and stirred for 1.5 h at 100 °C. The resulting mixture was filtered, the filter cake was washed with 1,4-dioxane (3 x 10 mL). The filtrate was concentrated in vacuo to afford 2-methyl-8-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-6-ylboronic acid (3 g, crude) as a black oil. MS ESI calculated for C11H15BN4O3 [M + H] + , 263.12, found 263.40. [00701] Step 2: To a stirred mixture of 2-methyl-8-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-7- ylboronic acid (1.4 g, 1.60 mmol, 30%) and methyl 5-bromo-2-fluoro-4-methylbenzoate (0.40 g, 1.60 mmol) in dioxane (12 mL) and H2O (3 mL) were added Pd(PPh3)2Cl2 (0.11 g, 0.16 mmol) and Na 2 CO 3 (0.51 g, 4.81 mmol) at room temperature. The reaction mixture was purged with nitrogen and stirred for 1 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 4:3:1). The fractions containing the desired product were combined and concentrated to afford methyl 2-fluoro-4- methyl-5-(2-methyl-8-morpholino-[1,2,4]triazolo[1,5-a]pyridi n-6-yl)benzoate (400 mg, 65%) as a yellow solid. MS ESI calculated for C20H21FN4O3 [M + H] + , 385.16, found 385.40; 1 H NMR (400 MHz, Chloroform-d) δ 8.06 (d, J = 1.4 Hz, 1H), 7.85 (d, J = 7.2 Hz, 1H), 7.10 (d, J = 11.6 Hz, 1H), 6.55 (d, J = 1.4 Hz, 1H), 4.00-3.95 (m, 4H), 3.93 (s, 3H), 3.57-3.53 (m, 4H), 2.62 (s, 3H), 2.32 (s, 3H). [00702] Step 3: To a stirred solution of methyl 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-6-yl]benzoate (400 mg, 1.04 mmol) and in H 2 O (3 mL), MeOH (3 mL) and THF (3 mL) was added NaOH (208 mg, 5.21 mmol) at room temperature. The reaction mixture was stirred for 2 h at room temperature. The resulting mixture was concentrated in vacuo and the resulting mixture was diluted with water (5 mL). The resulting mixture was acidified to pH 4 with HCl (aq.). The resulting mixture was filtered, the filter cake was washed with water (3 x 5 mL) to afford 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-6-yl]benzoic acid (240 mg, 62%) as an off-white solid. MS ESI calculated for C 19 H 19 FN 4 O 3 [M + H] + , 371.14, found 371.15; 1 H NMR (400 MHz, DMSO-d 6 ) δ 13.28 (s, 1H), 8.42 (d, J = 1.4 Hz, 1H), 7.76 (d, J = 7.6 Hz, 1H), , 7.32 (d, J = 11.8 Hz, 1H), 6.70 (d, J = 1.6 Hz, 1H), 3.83-3.76 (m, 4H), 3.56-3.52 (m, 4H), 2.48 (s, 3H), 2.32 (s, 3H). [00703] Step 4: To a stirred solution of 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-6-yl]benzoic acid (80 mg, 0.22 mmol) and oxalyl chloride (42 mg, 0.32 mmol) in DCM (1 mL) was added DMF (0.002 mL) at 0 °C under nitrogen atmosphere. The reaction mixture was stirred for 0.5 h at room temperature under nitrogen atmosphere. The resulting mixture was quenched by the addition of NH 3 ·H 2 O (1 mL) at 0 °C. The resulting mixture was extracted with EtOAc (3 x 5 mL), dried over anhydrous Sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by Prep-TLC (PE/EA/EtOH, 8:3:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)-[1,2,4]tria zolo[1,5- a]pyridin-6-yl]benzamide (40 mg, 50%) as a grey solid. MS ESI calculated for C19H20FN5O2 [M + H] + , 370.16, found 370.20; 1 H NMR (400 MHz, Chloroform-d) δ 7.99-7.96 (m, 1H), 7.04 (d, J = 12.6 Hz, 1H), 6.62 (d, J = 11.6 Hz, 1H), 6.50 (d, J = 1.6 Hz, 1H), 3.93-3.88 (m, 4H), 3.51-3.45 (m, 4H), 2.55 (s, 3H), 2.27 (s, 3H). [00704] Step 5: To a stirred solution of 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-6-yl]benzamide (40 mg, 0.11 mmol) and 4-bromo-1-(tert-butyl)-5- fluoro-1H-pyrazole (30 mg, 0.13 mmol) in dioxane (1 mL) were added methyl[2- (methylamino)ethyl]amine (10 mg, 0.11 mmol), CuI (21 mg, 0.11 mmol) and K3PO4 (48 mg, 0.23 mmol) at room temperature. The resulting mixture was purged with nitrogen and stirred for 16 h at 100 °C. The resulting mixture was concentrated in vacuo and the residue purified by Prep-TLC (PE/EA/EtOH, 8:3:1) to afford a crude product which was further purified by reverse phase Flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20- 40 μm, 25 g; Eluent A: Water (Plus 10 mmol/L NH 4 HCO 3 ); Eluent B: ACN; Gradient: 25% B to 55% B in 30 min; Flow rate: 30 mL/min; Detector: 220/254 nm. The fractions containing the desired product were combined and concentrated to afford N-(1-tert-butyl-3-fluoropyrazol-4-yl)- 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)-[1,2,4]tria zolo[1,5-a]pyridin-6-yl]benzamide (3.5 mg, 6%) as a white solid. MS ESI calculated for C 26 H 29 F 2 N 7 O 2 [M - H]-, 508.24, found 508.35; 1 H NMR (400 MHz, DMSO-d6) δ 9.93 (s, 1H), 8.44 (d, J = 1.2 Hz, 1H), 7.63 (d, J = 7.4 Hz, 1H), 7.57 (d, J = 2.4 Hz, 1H), 7.35 (d, J = 11.6 Hz, 1H), 6.73 (d, J = 1.2 Hz, 1H), 3.80 (t, J = 4.8 Hz, 4H), 3.55 (t, J = 4.8 Hz, 4H), 2.48 (s, 3H), 2.34 (s, 3H), 1.54 (s, 9H). [00705] Example 291: 2-Tert-butyl-N-{2-fluoro-4-methyl-5-[2-methyl-5-(morpholin-4 -yl)- [1,2,4]triazolo[1,5-a]pyridin-7-yl]phenyl}-1,3-oxazole-5-car boxamide
[00706] Step 1: To a stirred solution of 2-tert-butyl-1,3-oxazole-5-carboxylic acid (59 mg, 0.35 mmol) in T 3 P (1 ml) was added 2-fluoro-4-methyl-5-[2-methyl-5-(morpholin-4-yl)-[1,2,4]tria zolo[1,5- a]pyridin-7-yl]aniline (100 mg, 0.29 mmol) in Pyridine (1 mL) dropwise at room temperature. The reaction mixture was stirred for 1 h at 60 °C. The resulting mixture was concentrated in vacuo and the residue purified by Prep-TLC (PE/EA/EtOH, 16:3:1) to afford a crude product which was further purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH4HCO3), 10% to 60% gradient in 25 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 2-tert-butyl-N-{2-fluoro-4-methyl-5-[2- methyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-7-yl ]phenyl}-1,3-oxazole-5- carboxamide (58.7 mg, 40%) as an off-white solid. MS ESI calculated for C26H29FN6O3 [M + H] + , 493.23, found 493.30; 1 H NMR (400 MHz, Chloroform-d) δ 8.33 (d, J = 8.0 Hz, 1H), 8.02 (s, 1H), 7.71 (s, 1H), 7.26-7.23 (m, 1H), 7.11 (d, J = 11.6 Hz, 1H), 6.26 (d, J = 1.2 Hz, 1H), 4.01 (t, J = 4.4 Hz, 4H), 3.52 (t, J = 4.4 Hz, 4H), 2.63 (s, 3H), 2.28 (s, 3H), 1.47 (s, 9H). [00707] Example 292: 2-Tert-butyl-N-{2-fluoro-4-methyl-5-[2-methyl-5-(morpholin-4 -yl)- [1,2,4]triazolo[1,5-a]pyridin-7-yl]phenyl}-1,3-oxazole-4-car boxamide [00708] Step 1: To a stirred solution of ethyl 3-bromo-2-oxopropanoate (40.00 g, 205.12 mmol) in EtOH (350 mL) was added pivalamide (20.75 g, 205.14 mmol) at room temperature. The reaction mixture was stirred for 48 h at 85 °C. The resulting mixture was concentrated in vacuo and the residue was diluted with water (200 mL) and extracted with EA (3 x 100 mL). The combined organic layers were washed with brine (2 x 100 mL), dried over ahydrous Na2SO4, filtered and concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 9:1). The fractions containing the desired product were combined and concentrated to afford ethyl 2-tert-butyl-1,3-oxazole-4-carboxylate (6.1 g, 15%) as a light yellow oil. MS ESI calculated for C10H15NO3 [M + H] + , 198.11, found 198.11; 1 H NMR (400 MHz, Chloroform-d) δ 8.12 (s, 1H), 4.38 (q, J = 7.1 Hz, 2H), 1.41 (s, 9H), 1.37 (t, J = 7.1 Hz, 3H). [00709] Step 2: To a stirred solution of ethyl 2-tert-butyl-1,3-oxazole-4-carboxylate (6.1 g, 30.93 mmol) in MeOH (50 mL) and THF (50 mL) was added NaOH (3.71 g, 92.78 mmol) in water (50 mL) dropwise at room temperature. The reaction mixture was stirred for 1 h at room temperature. The resulting mixture was concentrated in vacuo and the residue was acidified to pH 2 with HCl (aq.). The precipitated solids were collected by filtration and washed with water (5 mL). The solid was dried in vacuo to afford 2-tert-butyl-1,3-oxazole-4-carboxylic acid (3.1 g, 59%) as a white solid. 1 H NMR (400 MHz, Chloroform-d) δ 10.83 (s, 1H), 8.24 (s, 1H), 1.42 (s, 9H). [00710] Step 3: To a stirred solution of 2-tert-butyl-1,3-oxazole-4-carboxylic acid (47 mg, 0.28 mmol) in T3P (1 mL, 50% in EA) was added 2-fluoro-4-methyl-5-[2-methyl-5-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-7-yl]aniline (80 mg, 0.23 mmol) in pyridine (1 mL) dropwise at room temperature. The reaction mixture was stirred for 1 h at 60 °C. The resulting mixture was diluted with water (10 mL) and extracted with EtOAc (3 x 15 mL). The combined organic layers were washed with brine (2 x 10 mL), dried over anhydrous sodium sulfate, and filtered. The filtrate was concentrated in vacuo and the residue purified by Prep-TLC (PE/EA/EtOH, 8:3:1) to afford a crude product which was further purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH 4 HCO 3 + 0.05% NH 3 H 2 O), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 39% B to 69% B in 8 min; Wave Length: 254 nm/220 nm; RT1: 6.98 min. The fractions containing the desired product were combined and concentrated to afford the title compound (42 mg, 36%) as an off-white solid. MS ESI calculated for C 26 H 29 FN 6 O 3 [M + H] + , 493.23, found 493.20; 1 H NMR (400 MHz, Chloroform-d) δ 9.00 (s, 1H), 8.42 (d, J = 8.0 Hz, 1H), 8.19 (s, 1H), 7.28-7.24 (m, 1H), 7.12 (d, J = 11.6 Hz, 1H), 6.32-6.28 (m, 1H), 4.03-4.01 (m, 4H), 3.55- 3.53 (m, 4H), 2.67-2.65 (m, 3H), 2.29 (s, 3H), 1.45 (s, 9H). [00711] Example 293: 2-(Tert-butyl)-N-(2-fluoro-4-methyl-5-(2-methyl-8-morpholino - [1,2,4]triazolo[1,5-a]pyridin-6-yl)phenyl)oxazole-5-carboxam ide
[00712] Step 1: To a stirred solution of 2-tert-butyl-1,3-oxazole-5-carboxylic acid (39.64 mg, 0.23 mmol) in T3P (0.4 mL, 50% in EA) was added 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4- yl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl]aniline (80 mg, 0.23 mmol) in pyridine (1 mL) dropwise at room temperature. The reaction mixture was stirred for 1 h at 60 °C. The resulting mixture was concentrated in vacuo and the residue purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH 4 HCO 3 ), 30% to 60% gradient in 25 min; detector, UV 254 nm. The fractions contained desired product were combined and concentrated to afford the title compound (85.3 mg, 73%) as a white solid. MS ESI calculated for C26H29FN6O3 [M+H] + , 493.23, found 493.40; 1 H NMR (400 MHz, DMSO-d6) δ 10.21 (s, 1H), 8.38 (d, J = 1.4 Hz, 1H), 7.85-7.80 (m, 1H), 7.52 (d, J = 7.8 Hz, 1H), 7.33 (d, J = 11.3 Hz, 1H), 6.70 (s, 1H), 3.80 (t, J = 4.8 Hz, 4H), 3.55 (t, J = 4.8 Hz, 4H), 2.48 (s, 3H), 2.30 (s, 3H), 1.38 (s, 9H). [00713] Example 294: 2-Tert-butyl-N-{2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4 -yl)- [1,2,4]triazolo[1,5-a]pyridin-6-yl]phenyl}-1,3-oxazole-4-car boxamide [00714] Step 1: To a stirred solution of 2-tert-butyl-1,3-oxazole-4-carboxylic acid (39.64 mg, 0.23 mmol) in T 3 P (0.4 mL, 50% in EA) was added 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4- yl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl]aniline (80 mg, 0.23 mmol) in pyridine (0.5 mL) at room temperature. The reaction mixture was stirred for 1 h at 60 °C. The resulting mixture was concentrated in vacuo and the residue purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase: MeCN in water (plus 10 mmol/L NH4HCO3), 40% to 75% gradient in 25 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford title compound (80.0 mg, 69%) as a white solid. MS ESI calculated for C 26 H 29 FN 6 O 3 [M+H] + , 493.23, found 493.40; 1 H NMR (400 MHz, DMSO-d6) δ 9.61 (s, 1H), 8.70 (s, 1H), 8.37 (d, J = 1.3 Hz, 1H), 7.73 (d, J = 7.9 Hz, 1H), 7.31 (d, J = 11.6 Hz, 1H), 6.69 (d, J = 1.5 Hz, 1H), 3.84 (t, J = 4.8 Hz, 4H), 3.55 (t, J = 4.8 Hz, 4H), 2.48 (s, 3H), 2.28 (s, 3H), 1.39 (s, 9H). [00715] Example 299: N-(1-Tert-butyl-5-fluoropyrazol-4-yl)-2-fluoro-4-methyl-5-[2 -methyl-8- (morpholin-4-yl)imidazo[1,2-b]pyridazin-6-yl]benzamide [00716] Step 1: To a stirred mixture of 4-{6-chloro-2-methylimidazo[1,2-b]pyridazin-8-yl}morpholine (150 mg, 0.59 mmol), methyl 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan- 2- yl)benzoate (209.51 mg, 0.71 mmol) and K3PO4 (377.99 mg, 1.78 mmol) in THF (3 mL) and H2O (0.3 mL) was added 2nd generation XPhos precatalyst (46.70 mg, 0.06 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 3 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (DCM/EA, 3:1). The fractions containing the desired product were combined and concentrated to afford methyl 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4- yl)imidazo[1,2-b]pyridazin-6-yl]benzoate (200 mg, 87%) as a grey solid. MS ESI calculated for C20H21FN4O3 [M + H] + , 385.16, found 385.20. [00717] Step 2: To a stirred solution of methyl 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4- yl)imidazo[1,2-b]pyridazin-6-yl]benzoate (200 mg, 0.52 mmol) in THF (1.6 mL) and MeOH (1.6 mL) was added NaOH (104.05 mg, 2.60 mmol) in H 2 O (1.6 mL) dropwise at room temperature. The reaction mixture was allowed to stir for 2 h at room temperature. The resulting mixture was concentrated in vacuo and the residue was acidified to pH 6 with HCl (aq.). The precipitated solids were collected by filtration and washed with water (3 x 10 mL) to afford 2- fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)imidazo[1,2-b] pyridazin-6-yl]benzoic acid (250 mg, crude) as an off-white solid. MS ESI calculated for C 19 H 19 FN 4 O 3 [M + H] + , 371.14, found 371.30. [00718] Step 3: To a stirred mixture of 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)imidazo[1,2- b]pyridazin-6-yl]benzoic acid (80 mg, 0.22 mmol), EDCI (62.11 mg, 0.32 mmol), HOBT (43.78 mg, 0.32 mmol) and 1-tert-butyl-5-fluoropyrazol-4-amine (80 mg, 0.51 mmol) in DMF (2 mL) was added TEA (87.43 mg, 0.86 mmol) dropwise at room temperature. The reaction mixture was allowed to stir for 2 h at room temperature under nitrogen atmosphere. The resulting mixture was diluted with water (20 mL) and extracted with EtOAc (3 x 20 mL). The combined organic layers were washed with brine (3 x 15 mL), dried over anhydrous Na2SO4 and filtered. The filtrate was concentrated in vacuo and the residue purified by Prep-TLC (PE/EA, 2:3) to afford the crude product. The crude product was purified by reverse phase Flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 40 g; Eluent A: Water (Plus 10 mmol/L NH4HCO3); Eluent B: ACN; Gradient: 30% to 50 % B in 25 min; Flow rate: 40 mL/min; Detector: 220/254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (51.2 mg, 46%) as an off-white solid. MS ESI calculated for C26H29F2N7O2 [M + H] + , 510.24, found 510.35; 1 H NMR (400 MHz, DMSO-d6) δ 9.95 (s, 1H), 7.84 (d, J = 1.0 Hz, 1H), 7.71 (d, J = 7.4 Hz, 1H), 7.57 (d, J = 2.4 Hz, 1H), 7.34 (d, J = 11.4 Hz, 1H), 6.35 (s, 1H), 4.04-3.97 (m, 4H), 3.78-3.73 (m, 4H), 2.39- 2.23 (m, 6H), 1.54 (d, J = 1.5 Hz, 9H). [00719] Example 303: 2-Tert-butyl-N-{2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4 -yl)- [1,2,4]triazolo[1,5-a]pyridin-6-yl]phenyl}-1,2,3-triazole-4- carboxamide [00720] Step 1: To a stirred solution of 4-{6-chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyridin-8- yl}morpholine (300 mg, 1.18 mmol), 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)aniline (296.18 mg, 1.18 mmol) and XPhos Pd G2 (93.41 mg, 0.12 mmol) in THF (2 mL) was added K 3 PO 4 (0.5 M) (4 mL) at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 2 h at 40 °C. The resulting mixture was diluted with water (20 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous Na 2 SO 4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography, eluted with PE/EA/EtOH (4/3/1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)-[1,2,4]tria zolo[1,5- a]pyridin-6-yl]aniline (361.9 mg, 89%) as a yellow solid. MS ESI calculated for C18H20FN5O [M + H] + , 342.17, found 342.20; 1 H NMR (400 MHz, Chloroform-d) δ 8.03 (d, J = 1.4 Hz, 1H), 6.94 (d, J = 11.8 Hz, 1H), 6.71 (d, J = 9.0 Hz, 1H), 6.58 (d, J = 1.4 Hz, 1H), 4.02-3.95 (m, 4H), 3.59-3.52 (m, 4H), 2.62 (s, 3H), 2.17 (s, 3H). [00721] Step 2: A solution of 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)-[1,2,4]tria zolo[1,5- a]pyridin-6-yl]aniline (100 mg, 0.29 mmol) in LiHMDS (1 mL, 1 M in THF) was allowed to stir for 1 h at 0 °C under nitrogen atmosphere. To the above mixture was added ethyl 2-tert-butyl- 1,2,3-triazole-4-carboxylate (57.77 mg, 0.29 mmol) in THF (1 mL) dropwise over 5 min at 0 °C. The reaction mixture was allowed to stir for additional 1 h at room temperature. The resulting mixture was quenched by the addition of sat. NH 4 Cl (aq.) (5 mL) at room temperature. The resulting mixture was diluted with water (30 mL) and extracted with EtOAc (3 x 20 mL). The combined organic layers were washed with brine (2 x 20 mL), dried over anhydrous Na2SO4. The resulting mixture was concentrated in vacuo and the residue purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: Water (Plus 10 nmol/L NH4HCO3 + 0.05% NH3·H2O), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 41% B to 71% B in 10 min; Wave Length: 254 nm/220 nm; RT1: 8.5 min. The fractions containing the desired product were combined and concentrated to afford the title compound (74.3 mg, 51%) as a white solid. MS ESI calculated for C25H29FN8O2 [M + H] + , 493.24, found 493.40; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.01 (s, 1H), 8.39 (d, J = 1.3 Hz, 1H), 8.28 (s, 1H), 7.60 (d, J = 7.8 Hz, 1H), 7.32 (d, J = 11.5 Hz, 1H), 6.70 (d, J = 1.4 Hz, 1H), 3.84-3.77 (m, 4H), 3.55-3.45 (m, 4H), 2.48 (s, 3H), 2.30 (s, 3H), 1.68 (s, 9H). [00722] Example 304: 2-Tert-butyl-N-{5-[2-cyclopropyl-5-(morpholin-4-yl)-[1,2,4]t riazolo[1,5- a]pyridin-7-yl]-2-fluoro-4-methylphenyl}-1,3-oxazole-5-carbo xamide [00723] Step 1: To a stirred solution of amino 2,4,6-trimethylbenzenesulfonate (2.51 g, 11.65 mmol) in DCM (30 mL) was added 4,6-dichloropyridin-2-amine (950 mg, 5.82 mmol) in DCM (30 mL) dropwise at 0 °C under nitrogen atmosphere. The reaction mixture was allowed to stir for 2 h at 50 °C under nitrogen atmosphere. The resulting mixture was concentrated in vacuo to afford 1,2-diamino-4,6-dichloropyridin-1-ium 2,4,6-trimethylbenzenesulfonate (960 mg, 43%) as a white solid. MS ESI calculated for C 14 H 17 Cl 2 N 3 O 3 [M - 199], 177.99, found 178.10; 1 H NMR (400 MHz, DMSO-d6) δ 8.93 (s, 2H), 7.45 (d, J = 2.4 Hz, 1H), 7.10 (d, J = 2.4 Hz, 1H), 6.74 (s, 2H), 6.47 (s, 2H), 2.49 (s, 6H), 2.17 (s, 3H). [00724] Step 2: To a stirred mixture of 1,2-diamino-4,6-dichloropyridin-1-ium 2,4,6- trimethylbenzenesulfonate (1.5 g, 3.97 mmol) and Cu(OAc) 2 (0.36 g, 1.98 mmol) in AcOH (8 mL) and MeOH (4 mL) was added cyclopropanecarbaldehyde (0.83 g, 11.90 mmol) dropwise at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 1 h at 70 °C. The resulting mixture was concentrated in vacuo and the residue diluted with EA (20 mL). The resulting mixture was basified to pH 7 with NaOH (aq.) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous Na 2 SO 4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 3:1). The fractions containing the desired product were combined and concentrated to afford 5,7-dichloro-2-cyclopropyl-[1,2,4]triazolo[1,5- a]pyridine (510 mg, 54.19%) as a light yellow solid. MS ESI calculated for C 9 H 7 Cl 2 N 3 [M + H] + , 228.00 found 228.00; 1 H NMR (400 MHz, Chloroform-d) δ 7.57 (d, J = 1.9 Hz, 1H), 7.07 (d, J = 1.9 Hz, 1H), 2.29-2.24 (m, 1H), 1.24-1.09 (m, 4H). [00725] Step 3: To a stirred solution of 5,7-dichloro-2-cyclopropyl-[1,2,4]triazolo[1,5-a]pyridine (510 mg, 2.24 mmol) and K 2 CO 3 (618.07 mg, 4.47 mmol) in DMSO (10 mL) was added morpholine (195.46 mg, 2.24 mmol) dropwise at room temperature. The reaction mixture was allowed to stir for 1 h at 100 °C under nitrogen atmosphere. The resulting mixture was diluted with water (30 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 50 mL), dried over anhydrous Na 2 SO 4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1). The fractions containing the desired product were combined and concentrated to afford 4-{7-chloro-2- cyclopropyl-[1,2,4]triazolo[1,5-a]pyridin-5-yl}morpholine (560 mg, 89%) as an off-white solid. MS ESI calculated for C13H15ClN4O [M + H] + , 279.09, 281.09, found 279.10, 281.10; 1 H NMR (400 MHz, Chloroform-d) δ 7.31-7.24 (m, 1H), 6.28-6.23 (m, 1H), 4.03-3.96 (m, 4H), 3.52 (t, J = 4.6 Hz, 4H), 2.23-2.18 (m, 1H), 1.27-1.06 (m, 4H). [00726] Step 4: To a stirred mixture of 4-{7-chloro-2-cyclopropyl-[1,2,4]triazolo[1,5-a]pyridin-5- yl}morpholine (280 mg, 1.00 mmol), 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)aniline (302.69 mg, 1.21 mmol) and K3PO4 (639.67 mg, 3.01 mmol) in THF (3 mL) and water (0.3 mL) was added 2nd Generation XPhos precatalyst (79.04 mg, 0.10 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 1 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1). The fractions containing the desired product were combined and concentrated to afford 5-[2-cyclopropyl-5-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-7-yl]-2-fluoro-4-methylaniline (230 mg, 62%) as a light yellow solid. MS ESI calculated for C20H22FN5O [M + H] + , 368.18, found 368.35; 1 H NMR (400 MHz, Chloroform-d) δ 7.18-7.15 (m, 1H), 6.93 (d, J = 11.8 Hz, 1H), 6.71 (d, J = 9.0 Hz, 1H), 6.21 (d, J = 1.6 Hz, 1H), 4.01 (t, J = 4.7 Hz, 4H), 3.52 (t, J = 4.7 Hz, 4H), 2.28-2.24 (m, 1H), 2.18 (s, 3H), 1.19-1.14 (m, 2H), 1.11-1.08 (m, 2H). [00727] Step 5: To a stirred mixture of 5-[2-cyclopropyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-7-yl]-2-fluoro-4-methylaniline (100 mg, 0.27 mmol) in T 3 P (0.5 mL, 50% in EA) was added 2-tert-butyl-1,3-oxazole-5-carboxylic acid (92.09 mg, 0.54 mmol) in Pyridine (0.5 mL) at room temperature. The reaction mixture was allowed to stir for 1 h at room temperature. The resulting mixture was concentrated in vacuo and the residue purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, ACN in water (Plus 10 mmol/L NH4HCO3), 35% to 65% gradient in 15 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (58.4 mg, 41%) as a white solid. MS ESI calculated for C 28 H 31 FN 6 O 3 [M + H] + , 519.24, found 519.40; 1 H NMR (400 MHz, DMSO-d6) δ 10.22 (s, 1H), 7.86 (s, 1H), 7.53 (d, J = 7.8 Hz, 1H), 7.33 (d, J = 11.3 Hz, 1H), 7.21 (d, J = 1.6 Hz, 1H), 6.38 (d, J = 1.7 Hz, 1H), 3.87- 3.80 (m, 4H), 3.49-3.39 (m, 4H), 2.31 (s, 3H), 2.20-2.15 (m, 1H), 1.38 (s, 9H), 1.09-1.00 (m, 4H). [00728] Example 305: 2-(Tert-butyl)-N-(5-(2-ethyl-5-morpholino-[1,2,4]triazolo[1, 5-a]pyridin-7-yl)-2- fluoro-4-methylphenyl)oxazole-5-carboxamide [00729] Step 1: To a stirred mixture of 4-{7-chloro-2-ethyl-[1,2,4]triazolo[1,5-a]pyridin-5- yl}morpholine (190 mg, 0.71 mmol), 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)aniline (214.65 mg, 0.85 mmol) and K 3 PO 4 (453.61 mg, 2.14 mmol) in THF (2 mL) and water (0.2 mL) was added XPhos Pd G2 (56.05 mg, 0.07 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 1 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:3). The fractions containing the desired product were combined and concentrated to afford 5-[2-ethyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-7-yl]-2-fluoro-4-methylaniline (100 mg, 39%) as a light yellow oil. MS ESI calculated for C 19 H 22 FN 5 O [M + H] + , 356.18, found 356.35; 1 H NMR (400 MHz, Chloroform-d) δ 7.24 (d, J = 1.6 Hz, 1H), 6.94 (d, J = 11.8 Hz, 1H), 6.72 (d, J = 9.0 Hz, 1H), 6.24 (d, J = 1.7 Hz, 1H), 4.02-3.95 (m, 4H), 3.56-3.49 (m, 4H), 3.00-2.94 (m, 2H), 2.19 (s, 3H), 1.47 (t, J = 7.6 Hz, 3H). [00730] Step 2: To a stirred solution of 2-tert-butyl-1,3-oxazole-5-carboxylic acid (38.08 mg, 0.23 mmol) in T3P (0.2 mL, 50% in EA) was added 5-[2-ethyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-7-yl]-2-fluoro-4-methylaniline (80 mg, 0.23 mmol) in Pyridine (0.2 mL) dropwise at room temperature. The reaction mixture was allowed to stir for 1 h at 30 °C. The resulting mixture was concentrated in vacuo and purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in Water (Plus 10 mmol/L NH 4 HCO 3 ), 20% to 50% gradient in 30 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford 2-tert-butyl-N-{5-[2- ethyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-7-yl] -2-fluoro-4-methylphenyl}-1,3- oxazole-5-carboxamide (63.8 mg, 55 %) as a white solid. MS ESI calculated for C 27 H 31 FN 6 O 3 [M + H] + , 507.24, found 507.40; 1 H NMR (400 MHz, DMSO-d 6 ) δ 10.22 (s, 1H), 7.85 (s, 1H), 7.54 (d, J = 7.9 Hz, 1H), 7.34 (d, J = 11.3 Hz, 1H), 7.27 (d, J = 1.6 Hz, 1H), 6.40 (d, J = 1.7 Hz, 1H), 3.83 (t, J = 4.6 Hz, 4H), 3.48 (t, J = 4.6 Hz, 4H), 2.85-2.78 (m, 2H), 2.32 (s, 3H), 1.38 (s, 9H), 1.33 (t, J = 7.6 Hz, 3H). [00731] Example 306: N-(1-(tert-Butyl)-5-fluoro-1H-pyrazol-4-yl)-5-(2-ethyl-5-mor pholino- [1,2,4]triazolo[1,5-a]pyridin-7-yl)-2-fluoro-4-methylbenzami de
[00732] Step 1: To a stirred mixture of 1,2-diamino-4,6-dichloropyridin-1-ium 2,4,6- trimethylbenzenesulfonate (1.5 g, 3.96 mmol) and Cu(OAc)2 (0.36 g, 1.98 mmol) in AcOH (8 mL) and MeOH (4 mL) was added propionaldehyde (0.69 g, 11.89 mmol) dropwise at room temperature under nitrogen atmosphere. The reaction mixture was purged with nitrogen three times and stirred for 1 h at 70 °C. The resulting mixture was concentrated in vacuo and the reaction mixture was basified to pH 7 with NaOH (aq.). The resulting mixture was extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous Na 2 SO 4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 3:1). The fractions containing the desired product were combined and concentrated to afford 5,7-dichloro-2-ethyl-[1,2,4]triazolo[1,5- a]pyridine (300 mg, 33%) as a light yellow solid. MS ESI calculated for C 8 H 7 Cl 2 N 3 [M + H] + , 216.07, found 216.15; 1 H NMR (400 MHz, Chloroform-d) δ 7.66 (d, J = 2.0 Hz, 1H), 7.12 (d, J = 2.0 Hz, 1H), 3.01-2.96 (m, 2H), 1.45 (t, J = 7.6 Hz, 3H). [00733] Step 2: To a stirred mixture of 5,7-dichloro-2-ethyl-[1,2,4]triazolo[1,5-a]pyridine (270 mg, 1.25 mmol) and morpholine (163.30 mg, 1.87 mmol) in DMSO (3 mL) was added K2CO3 (345.40 mg, 2.50 mmol) in portions at room temperature under nitrogen atmosphere. The reaction mixture was allowed to stir for 2 h at 100 °C under nitrogen atmosphere. The resulting mixture was diluted with water (20 mL) and extracted with EA (3 x 30 mL). The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 2:1). The fractions containing the desired product were combined and concentrated to afford 4- {7-chloro-2-ethyl-[1,2,4]triazolo[1,5-a]pyridin-5-yl}morphol ine (320 mg, 96%) as an off-white solid. MS ESI calculated for C12H15ClN4O. [M + H] + , 267.09, found 267.30; 1 H NMR (400 MHz, Chloroform-d) δ 7.34 (d, J = 2.0 Hz, 1H), 6.29 (d, J = 1.9 Hz, 1H), 4.03-3.97 (m, 4H), 3.54-3.48 (m, 4H), 3.01-2.96 (m, 2H), 1.44 (t, J = 7.6 Hz, 3H). [00734] Step 3: To a stirred mixture of 4-{7-chloro-2-ethyl-[1,2,4]triazolo[1,5-a]pyridin-5- yl}morpholine (300 mg, 1.12 mmol), methyl 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)benzoate (330.82 mg, 1.12 mmol) and XPhos Pd G2 (88.50 mg, 0.11 mmol) in THF (2 mL) was added K 3 PO 4 (4 mL, 2.00 mmol, 0.5 M) dropwise at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 2 h at 40 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography, eluted with PE/EA (1/1). The fractions containing the desired product were combined and concentrated to afford methyl 5-[2-ethyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-7-yl]-2-fluoro-4-methylbenzoate (300 mg, 67%) as an off-white solid. MS ESI calculated for C21H23FN4O3 [M + H] + , 399.18, found 399.40; 1 H NMR (400 MHz, Chloroform- d) δ 7.88 (d, J = 7.3 Hz, 1H), 7.34-7.31 (m, 1H), 7.13 (d, J = 11.3 Hz, 1H), 6.28-6.25 (m, 1H), 4.02 (t, J = 4.8 Hz, 4H), 3.96 (s, 3H), 3.57 (t, J = 4.8 Hz, 4H), 3.05-2.98 (m, 2H), 2.36 (s, 3H), 1.50 (t, J = 7.6 Hz, 3H). [00735] Step 4: To a stirred mixture of methyl 5-[2-ethyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-7-yl]-2-fluoro-4-methylbenzoate (270 mg, 0.68 mmol) in THF (2 mL) and MeOH (2 mL) was added NaOH (81.31 mg, 2.03 mmol) in H2O (2 mL) dropwise at room temperature. The reaction mixture was allowed to stir for 1 h at room temperature. The resulting mixture was concentrated in vacuo and to afford 5-[2-ethyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin- 7-yl]-2-fluoro-4-methylbenzoic acid (390 mg, crude) as an off-white solid. MS ESI calculated for C20H21FN4O3. [M + H] + , 385.16, found 385.00. [00736] Step 5: To a stirred mixture of 5-[2-ethyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin- 7-yl]- 2-fluoro-4-methylbenzoic acid (350 mg, 0.91 mmol), EDCI (259.89 mg, 1.36 mmol), HOBT (184.55 mg, 1.36 mmol) and NH4Cl (194.81 mg, 3.64 mmol) in DMF (4 mL) was added DIEA (941.42 mg, 7.28 mmol) dropwise at room temperature. The resulting mixture was allowed to stir for 30 min at 50 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (DCM/MeOH, 10:1). The fractions containing the desired product were combined and concentrated to afford 5-[2-ethyl-5-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-7-yl]-2-fluoro-4-methylbenzami de (230 mg, 66%) as an off-white solid. MS ESI calculated for C 20 H 22 FN 5 O 2 [M + H] + , 384.18, found 384.40; 1 H NMR (400 MHz, Chloroform-d) δ 8.05 (d, J = 8.1 Hz, 1H), 7.23 (d, J = 1.6 Hz, 1H), 7.10 (d, J = 12.6 Hz, 1H), 6.70 (d, J = 11.4 Hz, 1H), 6.21 (d, J = 1.6 Hz, 1H), 5.86 (s, 1H), 4.05-3.97 (m, 4H), 3.53-3.45 (m, 4H), 2.99-2.95 (m, 2H), 2.35 (s, 3H), 1.46 (t, J = 7.6 Hz, 3H). [00737] Step 6: To a stirred mixture of 5-[2-ethyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin- 7-yl]- 2-fluoro-4-methylbenzamide (200 mg, 0.52 mmol), methyl[2-(methylamino)ethyl]amine (45.98 mg, 0.52 mmol) and CuI (99.34 mg, 0.52 mmol) in dioxane (4 mL) was added 4-bromo-1-(tert- butyl)-5-fluoro-1H-pyrazole (230.63 mg, 1.04 mmol) in dioxane (4 mL) dropwise at room temperature. The reaction mixture was purged with nitrogen atmosphere for three times and stirred for 16 h at 100 °C. The mixture was allowed to cool to room temperature. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:4) to afford the crude product. The crude product was purified by reverse phase Flash chromatography with the following conditions: Column: WelFlash TM C18-I, 20-40 μm, 40 g; Eluent A: Water (Plus 10 mmol/L NH4HCO3); Eluent B: ACN; Gradient: 35% to 60% B in 25 min; Flow rate: 35 mL/min; Detector: 220/254 nm. The faster peak contained desired product were combined and concentrated to afford the title compound (109.7 mg, 39%) as an off-white solid. MS ESI calculated for C27H31F2N7O2 [M + H] + , 524.25, found 524.40; 1 H NMR (400 MHz, Chloroform-d) δ 8.11 (d, J = 7.9 Hz, 1H), 7.99 (d, J = 15.3 Hz, 1H), 7.79 (d, J = 2.3 Hz, 1H), 7.60-7.56 (m, 1H), 7.20 (d, J = 12.7 Hz, 1H), 6.50-6.45 (m, 1H), 4.05-3.94 (m, 4H), 3.63- 3.52 (m, 4H), 3.15-3.12 (m, 2H), 2.41 (s, 3H), 1.65 (s, 9H), 1.56 (t, J = 7.6 Hz, 3H). [00738] Example 307: N-(1-(tert-butyl)-5-fluoro-1H-pyrazol-4-yl)-5-(2-cyclopropyl -5-morpholino- [1,2,4]triazolo[1,5-a]pyridin-7-yl)-2-fluoro-4-methylbenzami de [00739] Step 1: To a stirred mixture of 4-{7-Chloro-2-cyclopropyl-[1,2,4]triazolo[1,5-a]pyridin-5- yl}morpholine (560 mg, 2.01 mmol), Methyl 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)benzoate (709.10 mg, 2.41 mmol) and K3PO4 (852.90 mg, 4.02 mmol) in THF (10 mL) and H 2 O (1 mL) was added XPhos Pd G2 (158.08 mg, 0.20 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 1 h at 80 °C. The resulting mixture was diluted with water (100 mL). The resulting mixture was diluted with water (20 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous Na 2 SO 4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:2). The fractions containing the desired product were combined and concentrated to afford methyl 5-[2-cyclopropyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a]py ridin-7-yl]-2-fluoro-4- methylbenzoate (580 mg, 70.34%) as an off-white solid. MS ESI calculated for C22H23FN4O3 [M + H] + , 411.18, found 411.30. [00740] Step 2: To a stirred mixture of methyl 5-[2-Cyclopropyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-7-yl]-2-fluoro-4-methylbenzoate (550 mg, 1.34 mmol) in THF (3 mL), MeOH (3 mL) and H 2 O (3 mL) was added LiOH·H 2 O (224.90 mg, 5.36 mmol) at room temperature. The reaction mixture was allowed to stir for 1 h at room temperature. The resulting mixture was concentrated in vacuo to afford 5-[2-cyclopropyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-7-yl]-2-fluoro-4-methylbenzoic acid (400 mg, crude). MS ESI calculated for C21H21FN4O3 [M + H] + , 397.16, found 397.35; 1 H NMR (400 MHz, DMSO-d6) δ 7.52 (d, J = 7.5 Hz, 1H), 7.14-7.09 (m, 1H), 6.98 (d, J = 11.0 Hz, 1H), 6.33-6.28 (m, 1H), 3.83 (t, J = 4.6 Hz, 4H), 3.47 (t, J = 4.6 Hz, 4H), 2.25 (s, 3H), 2.18-2.13 (m, 1H), 1.03-0.96 (m, 4H). [00741] Step 3: To a stirred mixture of 5-[2-Cyclopropyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-7-yl]-2-fluoro-4-methylbenzoic acid (400 mg, 1.01 mmol), HATU (575.50 mg, 1.51 mmol) and DIEA (652.07 mg, 5.05 mmol) in THF (6 mL) was added NH 4 Cl (80.96 mg, 1.51 mmol). The reaction mixture was allowed to stir for 2 h at room temperature. The resulting mixture was diluted with water (30 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 40 mL), dried over anhydrous Na2SO4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (DCM/MeOH, 15:1). The fractions containing the desired product were combined and concentrtated to afford 5-[2-Cyclopropyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-7-yl]-2-fluoro-4-methylbenzamide (320 mg, 80%) as an off-white solid. MS ESI calculated for C 21 H 22 FN 5 O 2 [M + H] + , 396.18, found 396.15; 1 H NMR (400 MHz, Chloroform- d) δ 8.06 (d, J = 8.0 Hz, 1H), 7.20 (d, J = 1.6 Hz, 1H), 7.12 (d, J = 12.6 Hz, 1H), 6.23 (d, J = 1.6 Hz, 1H), 4.02 (t, J = 4.6 Hz, 4H), 3.55 (t, J = 4.6 Hz, 4H), 2.36 (s, 3H), 2.29-2.23 (m, 1H), 1.25- 1.09 (m, 4H). [00742] Step 4: To a stirred solution of 5-[2-Cyclopropyl-5-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-7-yl]-2-fluoro-4-methylbenzamide (100 mg, 0.25 mmol), 4-bromo-1-(tert-butyl)-5- fluoro-1H-pyrazole (72.68 mg, 0.33 mmol) and K 3 PO 4 (112.72 mg, 0.53 mmol) in dioxane (2 mL) were added Methyl[2-(methylamino)ethyl]amine (22.29 mg, 0.25 mmol) and CuI (48.16 mg, 0.25 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 16 h at 100 °C. The resulting mixture was diluted with water (20 mL) and NH 3 . H 2 O (5 mL). The resulting mixture was extracted with EtOAc (3 x 40 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous Na2SO4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 1:1) to afford the crude product (40 mg). The crude product (40 mg) was purified by reverse phase flash chromatography with the following conditions: Column: Spherical C18, 20 - 40 um, 40 g; Mobile Phase A: Water (Plus 10 mmol/L NH4HCO3); Mobile Phase B: ACN; Flow rate: 40 mL/min; Gradient: 30% B to 60% B gradient in 25 min; Detector: 220 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (30.2 mg, 22%) as a white solid. MS ESI calculated for C 28 H 31 F 2 N 7 O 2 [M + H] + , 536.25, found 536.40; 1 H NMR (400 MHz, DMSO-d6) δ 9.94 (s, 1H), 7.63 (d, J = 7.3 Hz, 1H), 7.58 (d, J = 2.4 Hz, 1H), 7.36 (d, J = 11.3 Hz, 1H), 7.27 (d, J = 1.7 Hz, 1H), 6.42 (d, J = 1.8 Hz, 1H), 3.87-3.80 (m, 4H), 3.50-3.43 (m, 4H), 2.36 (s, 3H), 2.21-2.07 (m, 1H), 1.55 (s, 9H), 1.09-0.95 (m, 4H). [00743] Example 308: N-(1-(tert-Butyl)-5-fluoro-1H-pyrazol-4-yl)-2-fluoro-5-(2-is opropyl-8- morpholino-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-4-methylbenza mide [00744] Step 1: To a stirred solution of 5-bromo-3-(morpholin-4-yl)pyridin-2-amine (6 g, 23.25 mmol) in dioxane (60 mL) was added ethyl N-carbothioylcarbamate (3.05 g, 23.25 mmol) at room temperature. The reaction mixture was allowed to stir for 2 h at room temperature. The resulting mixture was concentrated in vacuo and the residue purified by trituration with MTBE (20 mL) and cyclohexane (10 mL). The precipitated solids were collected by filtration and washed with MTBE (3 x 10 mL) to afford ethyl N-{[5-bromo-3-(morpholin-4-yl)pyridin-2- yl]carbamothioyl}carbamate (8.4 g, 93%) as a brown solid. MS ESI calculated for C 13 H 17 BrN 4 O 3 S [M + H] + , 389.02, 391.02, found 389.25, 391.25; 1 H NMR (400 MHz, Chloroform-d) δ 8.28 (s, 1H), 7.57 (s, 1H), 4.33-4.26 (m, 2H), 3.92 (t, J = 4.4 Hz, 4H), 2.94 (t, J = 4.4 Hz, 4H), 1.38 (t, J = 7.2 Hz, 3H). [00745] Step 2: To a stirred solution of ethyl N-{[5-bromo-3-(morpholin-4-yl)pyridin-2- yl]carbamothioyl}carbamate (8.4 g, 21.58 mmol) in MeOH (50 mL), EtOH (50 mL) and THF (50 mL) were added NH2OH·HCl (8.10 g, 116.53 mmol) and DIEA (13.95 g, 107.90 mmol) at room temperature. The reaction mixture was allowed to stir for 2 h at 60 °C. The resulting mixture was diluted with water (150 mL) and basified to pH 8 with saturated NaHCO 3 (10%.). The resulting mixture was allowed to stir for 10 min at room temperature. The precipitated solids were collected by filtration and washed with water (3 x 30 mL) and Et2O (3 x 15 mL) to afford 6-bromo-8-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-2-a mine (4.35 g, crude) as a brown yellow solid. MS ESI calculated for C 10 H 12 BrN 5 O [M + H] + , 298.02, 300.02, found 298.25, 300.25; 1 H NMR (400 MHz, Chloroform-d) δ 8.09 (d, J = 1.6 Hz, 1H), 6.70 (d, J = 1.6 Hz, 1H), 4.47 (s, 2H), 3.96-3.93 (m, 4H), 3.50-3.47 (m, 4H). [00746] Step 3: To a stirred solution of 6-bromo-8-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-2- amine (3 g, 10.06 mmol) and methyl 2-fluoro-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)benzoate (2.96 g, 10.06 mmol) in dioxane (24 mL) and H2O (6 mL) were added Na2CO3 (3.20 g, 30.19 mmol) and Pd(PPh3)2Cl2 (706 mg, 1.00 mmol) at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 1 h at 80 °C. The resulting mixture was diluted with water (40 mL) and extracted with EtOAc (3 x 40 mL). The combined organic layers were washed with brine (3 x 40 mL), dried over anhydrous Na 2 SO 4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (DCM/MeOH, 10:1) to afford the crude product. The crude product was purified by trituration (PE/EA, 1:1) to afford methyl 5-[2-amino-8-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-6-yl]-2-fluoro-4-methylbenzoat e (1.68 g, 43%) as a light yellow solid. MS ESI calculated for C 19 H 20 FN 5 O 3 [M + H] + , 386.39, found 386.25; 1 H NMR (400 MHz, DMSO-d6) δ 8.17-8.13 (m, 1H), 7.76 (d, J = 7.4 Hz, 1H), 7.36 (d, J = 12.0 Hz, 1H), 6.61-6.58 (m, 1H), 6.00 (s, 2H), 3.85 (s, 3H), 3.77 (t, J = 4.8 Hz, 4H), 3.45 (t, J = 4.8 Hz, 4H), 2.33 (s, 3H). [00747] Step 4: To a stirred solution of methyl 5-[2-amino-8-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-6-yl]-2-fluoro-4-methylbenzoate (1.63 g, 4.23 mmol) and CuI (1.61 g, 8.46 mmol) in MeCN (20 mL) was added t-BuONO (2.18 g, 21.15 mmol) at room temperature. The reaction mixture was allowed to stir for 20 min at room temperature Then the reaction mixture was warmed to 55 °C and stirred for 30 min under nitrogen atmosphere. The resulting mixture was filtered, the filter cake was washed with ACN (3 x 20 mL). The filtrate was concentrated in vacuo and the residue was diluted with water (100 mL) and basified to pH 8 with NaOH (aq.). The resulting mixture was extracted with CH 2 Cl 2 (3 x 100 mL). The combined organic layers were washed with brine (3 x 70 mL), dried over anhydrous Na2SO4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (DCM/EA, 3:1). The fractions containing the desired product were combined and concentrated to afford methyl 2-fluoro-5-[2-iodo-8-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a] pyridin-6-yl]-4- methylbenzoate (766 mg, 36%) as an off-white solid. MS ESI calculated for C19H18FIN4O3 [M + H] + , 497.04, found 497.25; 1 H NMR (400 MHz, Chloroform-d) δ 8.09 (s, 1H), 7.86 (d, J = 7.2 Hz, 1H), 7.12 (d, J = 11.2 Hz, 1H), 6.59 (s, 1H), 4.00-3.96 (m, 4H), 3.95 (s, 3H), 3.61-3.59 (m, 4H), 2.33 (s, 3H). 19 F NMR (376 MHz, CDCl3) δ -110.16 (1F). [00748] Step 5: To a stirred mixture of methyl 2-fluoro-5-[2-iodo-8-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-6-yl]-4-methylbenzoate (300 mg, 0.60 mmol), 4,4,5,5-tetramethyl-2-(prop-1-en-2-yl)- 1,3,2-dioxaborolane (152.37 mg, 0.91 mmol) and Na 2 CO 3 (192.21 mg, 1.81 mmol) in dioxane (5 mL) and H2O (1 mL) was added Pd(dppf)Cl2CH2Cl2 (49.24 mg, 0.06 mmol) in portions at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 1 h at 80 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA/EtOH, 5:3:1). The fractions containing the desired product were combined and concentrated to afford methyl 2-fluoro-4-methyl-5-(8-morpholino-2-(prop- 1-en-2-yl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl)benzoate (240 mg, 87%) as a pink solid. MS ESI calculated for C 22 H 23 FN 4 O 3 [M + H] + , 411.18, found 411.40; 1 H NMR (400 MHz, Chloroform- d) δ 8.09 (d, J = 1.4 Hz, 1H), 7.86 (d, J = 7.2 Hz, 1H), 7.10 (d, J = 11.4 Hz, 1H), 6.55 (d, J = 1.4 Hz, 1H), 6.30 (d, J = 7.8 Hz, 1H), 5.43-5.38 (m, 1H), 4.02-3.97 (m, 4H), 3.93 (s, 3H), 3.63-3.57 (m, 4H), 1.26 (s, 3H), 0.87 (s, 3H). [00749] Step 6: To a stirred mixture of methyl 2-fluoro-4-methyl-5-(8-morpholino-2-(prop-1-en-2-yl)- [1,2,4]triazolo[1,5-a]pyridin-6-yl)benzoate (230 mg, 0.56 mmol) in MeOH (3 mL) was added Pd/C (230.19 mg, 2.16 mmol, 10%) in portions at room temperature. The reaction mixture was allowed to stir for 1 h under hydrogen atmosphere at room temperature. The resulting mixture was filtered, the filter cake was washed with MeOH (3 x 20 mL). The filtrate was concentrated in vacuo to afford methyl 2-fluoro-5-(2-isopropyl-8-morpholino-[1,2,4]triazolo[1,5-a]p yridin-6- yl)-4-methylbenzoate (210 mg, crude) as a white solid. MS ESI calculated for C 22 H 25 FN 4 O 3 [M + H] + , 413.19, found 413.30; 1 H NMR (400 MHz, Chloroform-d) δ 8.07 (d, J = 1.4 Hz, 1H), 7.85 (d, J = 7.3 Hz, 1H), 7.10 (d, J = 11.4 Hz, 1H), 6.55-6.53 (m, 1H), 4.02-3.95 (m, 5H), 3.93 (s, 3H), 3.58-3.51 (m, 4H), 2.32 (s, 3H), 1.46 (d, J = 6.8 Hz, 6H). [00750] Step 7: To a stirred mixture of methyl 2-fluoro-5-(2-isopropyl-8-morpholino-[1,2,4]triazolo[1,5- a]pyridin-6-yl)-4-methylbenzoate (200 mg, 0.49 mmol) in THF (2 mL) and MeOH (2 mL) was added NaOH (96.97 mg, 2.43 mmol) in H 2 O (2 mL) dropwise at room temperature. The reaction mixture was allowed to stir for 1 h at room temperature. The resulting mixture was concentrated in vacuo to afford 2-fluoro-5-(2-isopropyl-8-morpholino-[1,2,4]triazolo[1,5-a]p yridin-6-yl)-4- methylbenzoic acid (300 mg, crude) as a white solid. MS ESI calculated for C 21 H 23 FN 4 O 3 [M + H] + , 399.18, found 399.35. [00751] Step 8: To a stirred mixture of 2-fluoro-5-(2-isopropyl-8-morpholino-[1,2,4]triazolo[1,5- a]pyridin-6-yl)-4-methylbenzoic acid (280 mg, 0.70 mmol), EDCI (202.07 mg, 1.05 mmol), HOBT (142.44 mg, 1.05 mmol) and NH 4 Cl (187.95 mg, 3.52 mmol) in DMF (5 mL) was added DIEA (908.28 mg, 7.03 mmol) dropwise at room temperature. The reaction mixture was allowed to stir for 1 h at 50 °C. The resulting mixture was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/EA, 4:1). The fractions containing the desired product were combined and concentrated to afford 2-fluoro-5-(2-isopropyl-8-morpholino- [1,2,4]triazolo[1,5-a]pyridin-6-yl)-4-methylbenzamide (100 mg, 35%) as a white solid. MS ESI calculated for C21H24FN5O2 [M + H] + , 398.19, found 398.35; 1 H NMR (400 MHz, Chloroform- d) δ 8.10-8.06 (m, 1H), 8.00 (s, 2H), 7.12 (d, J = 12.5 Hz, 1H), 6.65-6.61 (m, 1H), 5.81-5.74 (m, 1H), 4.00-3.95 (m, 4H), 2.92-2.87 (m, 5H), 2.32 (s, 3H), 1.47 (d, J = 6.8 Hz, 6H). [00752] Step 9: To a stirred mixture of 2-fluoro-5-(2-isopropyl-8-morpholino-[1,2,4]triazolo[1,5- a]pyridin-6-yl)-4-methylbenzamide (90 mg, 0.23 mmol), K3PO4 (100.94 mg, 0.48 mmol) and CuI (86.25 mg, 0.45 mmol) in dioxane (1 mL) was added methyl[2-(methylamino)ethyl]amine (39.92 mg, 0.45 mmol) and 4-bromo-1-(tert-butyl)-5-fluoro-1H-pyrazole (200.24 mg, 0.90 mmol) at room temperature. The reaction mixture was allowed to stir for 16 h at 100 °C. The resulting mixture was concentrated in vacuo and the residue purified by Prep-TLC (PE/EA, 1:3) to afford the crude product. The crude product (80 mg) was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10 mmol/L NH4HCO3), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 50% B to 80% B in 7 min; Wave Length: 254 nm/220 nm; RT1: 6.1 min. The fractions containing the desired product were combined and concentrated to afford the title compound (8.6 mg, 7%) as a white solid. MS ESI calculated for C28H33F2N7O2 [M + H] + , 538.27, found 538.45; 1 H NMR (400 MHz, Chloroform-d) δ 8.25 (d, J = 15.6 Hz, 1H), 8.13- 8.07 (m, 3H), 7.17 (d, J = 12.8 Hz, 1H), 6.55 (d, J = 1.4 Hz, 1H), 4.01-3.98 (m, 4H), 3.62-3.59 (m, 4H), 3.31-3.27 (m, 1H), 2.38 (s, 3H), 1.57 (s, 9H), 1.47 (d, J = 7.0 Hz, 6H). [00753] Example 309: N-(1-(tert-Butyl)-5-fluoro-1H-pyrazol-4-yl)-5-(2-(dimethylam ino)-8-morpholino- [1,2,4]triazolo[1,5-a]pyridin-6-yl)-2-fluoro-4-methylbenzami de [00754] Step 1: To a stirred solution of methyl 5-[2-amino-8-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-6-yl]-2-fluoro-4-methylbenzoate (300 mg, 0.78 mmol) in DMF (15 mL) was added NaH (93.40 mg, 2.33 mmol, 60%) in portions at 0 °C under nitrogen atmosphere. The reaction mixture was allowed to stir for 30 min at room temperature under nitrogen atmosphere. To the above mixture was added CH 3 I (441.95 mg, 3.11 mmol) dropwise at 0 °C. The reaction mixture was allowed to stir for additional 1 h at room temperature. The resulting mixture was quenched with sat. NH4Cl (aq.) at room temperature and diluted with water (30 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous Na 2 SO 4 . The residue was purified by silica gel column chromatography ( PE/EA, 2:1). The residue was purified by reversed-phase flash chromatography with the following conditions: column, C18 silica gel; mobile phase, MeCN in water (Plus 10 mmol/L NH 4 HCO 3 ), 25% to 55% gradient in 30 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford methyl 5-[2-(dimethylamino)-8- (morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl]-2-fluor o-4-methylbenzoate (150 mg, 46%) as a white solid. MS ESI calculated for C 21 H 24 FN 5 O 3 [M + H] + , 414.19, found 414.35; 1 H NMR (400 MHz, DMSO-d 6 ) δ 8.27-8.24 (m, 1H), 7.76 (d, J = 7.5 Hz, 1H), 7.37 (d, J = 11.9 Hz, 1H), 6.64-6.60 (m, 1H), 3.85 (s, 3H), 3.79 (t, J = 4.6 Hz, 4H), 3.48 (t, J = 4.6 Hz, 4H), 3.03 (s, 6H), 2.33 (s, 3H). [00755] Step 2: To a stirred solution of methyl 5-[2-(dimethylamino)-8-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-6-yl]-2-fluoro-4-methylbenzoat e (120 mg, 0.29 mmol) in THF (1.2 mL) and MeOH (1.2 mL) was added NaOH (58.04 mg, 1.45 mmol) in H2O (1.2 mL) dropwise at room temperature. The reaction mixture was allowed to stir for 16 h at room temperature. The resulting mixture was concentrated in vacuo to afford 5-[2-(dimethylamino)-8-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-6-yl]-2-fluoro-4-methylbenzoic acid (210 mg, crude) as a white solid. MS ESI calculated for C 20 H 22 FN 5 O 3 [M + H] + , 400.17, found 400.25. [00756] Step 3: To a stirred solution of 5-[2-(dimethylamino)-8-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-6-yl]-2-fluoro-4-methylbenzoic acid (180 mg, 0.32 mmol, 70%), EDCI (90.71 mg, 0.47 mmol), HOBT (63.94 mg, 0.47 mmol) and NH4Cl (84.37 mg, 1.58 mmol) in DMF (3.6 mL) was added DIEA (0.55 mL, 3.15 mmol) dropwise at room temperature. The reaction mixture was allowed to stir for 2 h at 50 °C. The resulting mixture was diluted with water (30 mL) and extracted with EtOAc (3 x 50 mL). The combined organic layers were washed with brine (2 x 30 mL), dried over anhydrous Na 2 SO 4 . The residue was purified by silica gel column chromatography (PE/EA, 1:2). The fractions containing the desired product were combined and concentrated to afford 5-[2-(dimethylamino)-8-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-6- yl]-2-fluoro-4-methylbenzamide (75 mg, 59%) as a white solid. MS ESI calculated for C 20 H 23 FN 6 O 2 [M + H] + , 399.19, found 399.35; 1 H NMR (400 MHz, Chloroform-d) δ 8.03 (d, J = 8.2 Hz, 1H), 7.92 (d, J = 1.6 Hz, 1H), 7.08 (d, J = 12.6 Hz, 1H), 6.49 (d, J = 1.7 Hz, 1H), 3.96 (t, J = 4.7 Hz, 4H), 3.51 (t, J = 4.7 Hz, 4H), 3.14 (s, 6H), 2.33 (s, 3H). [00757] Step 4: To a stirred solution of 5-[2-(dimethylamino)-8-(morpholin-4-yl)-[1,2,4]triazolo[1,5- a]pyridin-6-yl]-2-fluoro-4-methylbenzamide (75 mg, 0.19 mmol), methyl[2- (methylamino)ethyl]amine (16.59 mg, 0.19 mmol), K 3 PO 4 (83.91 mg, 0.40 mmol) and CuI (35.85 mg, 0.19 mmol) in dioxane (1 mL) was added 4-bromo-1-(tert-butyl)-5-fluoro-1H- pyrazole (62.42 mg, 0.28 mmol) dropwise at room temperature. The reaction mixture was purged with nitrogen three times and stirred for 16 h at 100 °C. The resulting mixture was concentrated in vacuo and the residue purified by Prep-TLC (PE/EA, 1:9) to afford the crude product. The crude product was purified by Prep-HPLC with the following conditions: Column: XBridge Prep OBD C18 Column, 30 x 150 mm, 5 μm; Mobile Phase A: water (Plus 10mmol/L NH 4 HCO 3 ), Mobile Phase B: ACN; Flow rate: 60 mL/min; Gradient: 37% B to 67% B in 7 min; Wave Length: 254nm/220nm. The fractions containing the desired product were combined and concentrated to afford the title compound (30.6 mg, 30%) as a white solid. MS ESI calculated for C 27 H 32 F 2 N 8 O 2 [M + H] + , 539.26, found 539.45; 1 H NMR (400 MHz, DMSO-d 6 ) δ 9.91 (s, 1H), 8.30-8.28 (m, 1H), 7.60 (d, J = 7.4 Hz, 1H), 7.57 (d, J = 2.3 Hz, 1H), 7.33 (d, J = 11.3 Hz, 1H), 6.67-6.65 (m, 1H), 3.80 (t, J = 4.6 Hz, 4H), 3.49 (t, J = 4.6 Hz, 4H), 3.03 (s, 6H), 2.35 (s, 3H), 1.54 (s, 9H). [00758] Example 310: 2-Fluoro-N-[3-fluoro-1-(1-methylcyclopropyl)pyrazol-4-yl]-4- methyl-5-[2- methyl-8-(morpholin-4-yl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl ]benzamide [00759] Step 1: To a stirred solution of 4-bromo-3-fluoro-1H-pyrazole (1 g, 6.06 mmol), Cu(OAc)2 (1.10 g, 6.06 mmol) and Na2CO3 (1.28 g, 12.12 mmol) in DCE (20 mL) was added 2,2'-bipyridine (0.95 g, 6.06 mmol) at room temperature. The reaction mixture was purged with oxygen for three times. To the above mixture was added 4,4,5,5-tetramethyl-2-(prop-1-en-2-yl)-1,3,2- dioxaborolane (2.04 g, 12.12 mmol) in DCE (6 mL) dropwise at room temperature. The resulting mixture was allowed to stir for 16 h at 70 °C. The resulting mixture was quenched with saturated aqueous NH 4 Cl (100 mL) and extracted with EA (3 x 70 mL). The combined organic layers were washed with brine (50 mL), dried over anhydrous Na2SO4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/DCM, 1:1). The fractions containing the desired product were combined and concentrated to afford 4-bromo-3-fluoro-1-(prop-1-en-2-yl)pyrazole (850 mg, 68%) as a light yellow oil. MS ESI calculated for C6H6BrFN2 [M + H] + , 204.97, 206.97, found 204.95, 206.95; 1 H NMR (400 MHz, Chloroform-d) δ 7.55 (d, J = 2.0 Hz, 1H), 5.28-5.26 (m, 1H), 4.70-4.68 (m, 1H), 2.19 (s, 3H). [00760] Step 2: To a stirred solution of 4-bromo-3-fluoro-1-(prop-1-en-2-yl)pyrazole (850 mg, 4.15 mmol) in DCM (10 mL) was added diethylzinc (12.5 mL, 12.44 mmol) (1 M in THF) dropwise at 0 °C. The reaction mixture was purged with nitrogen three times and stirred for 0.5 h at 0 °C. To the above mixture was added CH 2 I 2 (5.55 g, 20.73 mmol) dropwise at 0 °C. The reaction mixture was allowed to stir for additional 16 h at room temperature. The resulting mixture was quenched with saturated aqueous NH 4 Cl (100 mL) and extracted with dichloromethane (3 x 100 mL). The combined organic layers were washed with brine (50 mL), dried over anhydrous Na2SO4 and filtered. The filtrate was concentrated in vacuo and the residue purified by silica gel column chromatography (PE/DCM, 2:1) (detector: UV 227 nm). The fractions containing the desired product were combined and concentrated to afford 4-bromo-3-fluoro-1-(1- methylcyclopropyl)pyrazole (100 mg, 11%) as a light yellow oil. MS ESI calculated for C7H8BrFN2 [M + H] + , 218.99, 220.99, found 219.00, 221.00; 1 H NMR (400 MHz, Chloroform- d) δ 7.34 (d, J = 2.0 Hz, 1H), 1.56 (s, 3H), 1.21-1.18 (m, 2H), 0.86-0.85 (m, 2H). [00761] Step 3: To a stirred mixture of 2-fluoro-4-methyl-5-[2-methyl-8-(morpholin-4-yl)- [1,2,4]triazolo[1,5-a]pyridin-6-yl]benzamide (110 mg, 0.30 mmol) and CuI (57 mg, 0.30 mmol) in dioxane (3 mL) were added K 3 PO 4 (139 mg, 0.66 mmol), methyl[2- (methylamino)ethyl]amine (26 mg, 0.30 mmol) and 4-bromo-3-fluoro-1-(1- methylcyclopropyl)pyrazole (78 mg, 0.36 mmol) at room temperature. The reaction mixture was purged with nitrogen three times and stirred for additional 16 h at 100 °C. The resulting mixture was diluted with water (30 mL) and extracted with ea (3 x 50 mL). The combined organic layers were washed with saturated brine (2 x 30 mL), dried over anhydrous Na 2 SO 4 and filtered. The filtrate was concentrated in vacuo and the residue purified by Prep-TLC (DCM/MeOH, 20:1) to afford the crude product. The crude product was purified by reverse flash chromatography with the following conditions: column, C18 silica gel; mobile phase, ACN in water (Plus 10 mmol/L NH4HCO3), 20% to 60% gradient in 20 min; detector, UV 254 nm. The fractions containing the desired product were combined and concentrated to afford the title compound (47.1 mg, 31%) as an off-white solid. MS ESI calculated for C 26 H 27 F 2 N 7 O 2 [M + H] + , 508.22, found 508.35; 1 H NMR (400 MHz, Chloroform-d) δ 8.25 (d, J = 15.6 Hz, 1H), 8.10-8.07 (m, 3H), 7.18 (d, J = 12.8 Hz, 1H), 7.65 (s, 1H), 4.02-4.00 (m, 4H), 3.57-3.55 (m, 4H), 2.68 (s, 3H), 2.38 (s, 3H), 1.60 (s, 3H), 1.27-1.24 (m, 2H), 0.91-0.88 (m, 2H). [00762] The following compounds in Table 8 were prepared using procedures similar to those described above using appropriate starting materials. Table 8 II. Biological Evaluation [00763] Example 1: Kinase assay protocol [00764] Enzymatic BRAF Kinase Activity Determination: Small molecule inhibition of the BRAF kinases was measured using ADP-Glo assay. In the assay, ADP is converted to ATP in the presence of test kinase and substrate, resulting in luciferase reaction and luminescent readout with light generated proportional to the relative kinase activity. Compounds diluted in DMSO were used in 10-point, 3-fold dose curve for both assays. Final concentrations of 6 nM BRAF (CarnaBio, Cat.09-122) or 3 nM RAF1 (CarnaBio, Cat.09-125) and 30 nM MEK1 substrate (Millipore, Cat.14-420) were incubated with 3 μM ATP, 10 mM MgCl2, 0.003% Brij-35, 2 mM DTT, 0.05% BSA, 1 mM EGTA, and 50 mM HEPES for 90 minutes at room temp prior to addition of ADP-Glo reagent (Promega, Cat. V9102) for 40 minutes, and detection reagent for 45 minutes. Luminescence was read on an Envision plate reader (PerkinElmer) and percent remaining activity was used to calculate IC50 using a four-parameter fit model using Dotmatics Knowledge Solutions Studies curve fitting (Dotmatics, Bishops Stortford, UK, CM23). [00765] Representative data for exemplary compounds is presented in Table 9. Table 9 Note: Biochemical assay IC 50 data are designated within the following ranges: A: ≤ 0.001 µM C: > 0.010 µM to ≤ 0.100 µM B: > 0.001 µM to ≤ 0.010 µM D: > 0.100 µM to ≤ 1 µM III. Preparation of Pharmaceutical Dosage Forms [00766] Example 1: Oral capsule [00767] The active ingredient is a compound of Table 1, or a pharmaceutically acceptable salt or solvate thereof. A capsule for oral administration is prepared by mixing 1-1000 mg of active ingredient with starch or other suitable powder blend. The mixture is incorporated into an oral dosage unit such as a hard gelatin capsule, which is suitable for oral administration. [00768] Example 2: Solution for injection [00769] The active ingredient is a compound of Table 1, or a pharmaceutically acceptable salt or solvate thereof, and is formulated as a solution in sesame oil at a concentration of 50 mg-eq/mL. [00770] The examples and embodiments described herein are for illustrative purposes only and various modifications or changes suggested to persons skilled in the art are to be included within the spirit and purview of this application and scope of the appended claims.