Title:
CYCLIC BUTANE COMPOUND PRODUCTION METHOD, PHOTOSENSITIZER, AND PYRAZOLE COMPOUND
Document Type and Number:
WIPO Patent Application WO/2020/196660
Kind Code:
A1
Abstract:
Provided are: a cyclic butane compound production method comprising performing a [2+2] photocyclization reaction of an unsaturated compound in the presence of a compound represented by formula 1a or formula 1b; a photosensitizer; and a pyrazole compound. In the formulae, A1, A2, and A4 each independently represent a nitrogen atom or C(R2), each A3 independently represents an oxygen atom, a sulfur atom, or N(R3), each R1 independently represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, or a heterocyclic group, and R2 and R3 each independently represent a hydrogen atom or a substituent.
More Like This:
Inventors:
TSUNA KAZUHIRO (JP)
ITO TAKAYUKI (JP)
ITO TAKAYUKI (JP)
Application Number:
PCT/JP2020/013431
Publication Date:
October 01, 2020
Filing Date:
March 25, 2020
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
C07D493/04; C07D231/12; C07D231/16
Domestic Patent References:
| WO2015108166A1 | 2015-07-23 | |||
| WO2015108169A1 | 2015-07-23 |
Other References:
TYSON, E. L. ET AL.: "Photocatalytic [2 รพ 2] Cycloadditions of Enones with Cleavable Redox Auxiliaries", ORGANIC LETTERS, vol. 14, no. 4, 2012, pages 1110 - 1113, XP055743285
DU, J. ET AL.: "A Dual-Catalysis Approach to Enantioselective [2 + 2] Photocycloadditions Using Visible Light", SCIENCE, vol. 344, 2014, pages 392 - 396, XP055743533
ALTHAGAFI, I. I. ET AL.: "Microwave assisted regioselective synthesis of novel pyrazoles and pyrazolopyridazinesviafluorine containing building blocks", JOURNAL OF MOLECULAR STRUCTURE, vol. 1142, 2017, pages 122 - 129, XP085004410
AI-BOGAMI, A. S. ET AL.: "Microwave assisted regioselective synthesis and 2D-NMR studies of novel azoles and azoloazines utilizing fluorine-containing building blocks", JOURNAL OF MOLECULAR STRUCTURE, vol. 1121, 2016, pages 167 - 179, XP029618245
DU, J. ET AL.: "A Dual-Catalysis Approach to Enantioselective [2 + 2] Photocycloadditions Using Visible Light", SCIENCE, vol. 344, 2014, pages 392 - 396, XP055743533
ALTHAGAFI, I. I. ET AL.: "Microwave assisted regioselective synthesis of novel pyrazoles and pyrazolopyridazinesviafluorine containing building blocks", JOURNAL OF MOLECULAR STRUCTURE, vol. 1142, 2017, pages 122 - 129, XP085004410
AI-BOGAMI, A. S. ET AL.: "Microwave assisted regioselective synthesis and 2D-NMR studies of novel azoles and azoloazines utilizing fluorine-containing building blocks", JOURNAL OF MOLECULAR STRUCTURE, vol. 1121, 2016, pages 167 - 179, XP029618245
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
Download PDF: