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JPS5111173B2 |
The present invention relates to novel alpha -benzylidene- gamma -butyrolactone derivatives and processes for the manufacture of them. Further, the present invention pertains to the fungicidal composition containing the same and use ther...
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JPS515444B1 |
Procedure for the preparation of new antibiotics of the formula **(See formula)** in which X is taken from the groups made up of **(See formula)** where R1 is taken from the group consisting of hydrogen, lower alkyl, phenyl, and phenyl s...
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JPS512461B2 |
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JPS50154274A |
Process for the preparation of a compound of formula: WHEREIN N IS ZERO OR AN INTEGER FROM 1 TO 12 AND R1 and R2 are hydrogen or lower alkyl, which comprises the step of treating a mixture of a diketene of formula: and a strongly acidic ...
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JPS50135286A |
Homologs of antibiotic Lasalocid A and their pharmaceutically acceptable salts are produced by a known species of Streptomyces. The homologs exhibit coccidiostatic and antibacterial activity and thus are useful as coccidiostats and antib...
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JPS50121216A |
Methacrylic acid and butyrolactone are manufactured by hydroformylation of allyl esters of lower carboxylic acids in the presence of rhodium catalysts and inert organic solvents, followed by oxidation of the resulting formyl compounds wi...
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JPS5020073B1 |
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JPS5082051A |
The present invention relates to a process for the manufacture of 2,2-disubstituted propiolactones from isoanhydrides and formaldehyde, as shown in the following equation:
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JPS5016761B1 |
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JPS5013260B1 |
1316019 Purification of #-lactones TEIJIN Ltd 14 July 1971 [14 July 1970] 33073/71 Heading C2C α,α - Dimethyl - # - propiolactone and/or #-propiolactone are purified by contact thereof with a solid alkaline earth metal hydroxide. The #...
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JPS5041850A |
A process for converting maleic anhydride to gamma -butyrolactone by treating the anhydride with hydrogen in the presence of co-catalysts comprising palladium and nickel-copper chromite at elevated pressures and temperatures.
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JPS505186B1 |
1283296 Macrocyclic compounds RESEARCH CORP 18 March 1970 [17 July 1969] 12935/70 Addition to 1185936 Heading C2C [Also in Division C5] Macrocyclic hydrocarbons or lactones of up to 20 carbon atoms are prepared by heating a solution of a...
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JPS502510B1 |
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JPS49132067A |
Lactones are separated from a mixture of (a) at least one member selected from the group consisting of hydroxy acids wherein the OH group and the COOH group are bonded through 3 or 4 carbon atoms, lactones derived therefrom, lower polyme...
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JPS49126662A |
Title lactones have the formula (I):- (where X is h or halogen). Cpds. (I) are useful as anti-inflammatory agents pref. administered in daily dose of 150-600 mg.
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JPS49110660A |
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JPS4920793B1 |
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JPS4920794B1 |
Lactones are stabilized, particularly against discoloration, by mixing the lactone with oxygen, an oxidizing agent or an acid which is less volatile than the lactone and subjecting the mixture to distillation.
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JPS497220A |
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JPS4832107B1 |
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JPS4830272B1 |
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JPS4867267A |
1385806 Purification of α,α-disubstituted-#- propiolactones EASTMAN KODAK CO 14 Dec 1972 [16 Dec 1971] 57877/72 Heading C2C Impure α,α-disubstituted-#-propiolactones of formula where R and R1 are straight- or branched-chain C 1 to C ...
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JPS4862751A |
1387328 Stabilizing lactones EASTMAN KODAK CO 30 Nov 1972 [2 Dec 1971] 55358/72 Heading C2C α,α-Disubstituted-#-propiolactones of the formula wherein each R and R1 are hydrogen, straight or branched chain alkyl groups of from 1 to 10 c...
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JPS4825165B1 |
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JPS4822697B1 |
1,270,889. Pivalolactone. FARBWERKE HOECHST A.G. 8 May, 1970 [9 May, 1969], No. 22402/70. Heading C2C. Pivalolactone is prepared by heating the anhydride of a #-acyloxypivalic acid of the formula either alone or in admixture with an alip...
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JPS4819640B1 |
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JPS4816506B1 |
Procedure for the preparation of new antibiotics of the formula **(See formula)** in which X is taken from the groups made up of **(See formula)** where R1 is taken from the group consisting of hydrogen, lower alkyl, phenyl, and phenyl s...
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JPS4816507B1 |
Procedure for the preparation of new antibiotics of the formula **(See formula)** in which X is taken from the groups made up of **(See formula)** where R1 is taken from the group consisting of hydrogen, lower alkyl, phenyl, and phenyl s...
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JPS4815942B1 |
Procedure for the preparation of new antibiotics of the formula **(See formula)** in which X is taken from the groups made up of **(See formula)** where R1 is taken from the group consisting of hydrogen, lower alkyl, phenyl, and phenyl s...
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JPS4832883A |
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JPS4810451B1 |
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