JPS5639084A - Preparation of optically active cyclopentenolone - Google Patents
Preparation of optically active cyclopentenoloneInfo
- Publication number
- JPS5639084A JPS5639084A JP11477279A JP11477279A JPS5639084A JP S5639084 A JPS5639084 A JP S5639084A JP 11477279 A JP11477279 A JP 11477279A JP 11477279 A JP11477279 A JP 11477279A JP S5639084 A JPS5639084 A JP S5639084A
- Authority
- JP
- Japan
- Prior art keywords
- optically active
- compound
- formula
- readily
- insecticides
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Furan Compounds (AREA)
Abstract
PURPOSE: To obtain the titled compound useful as a raw material for insecticides readily, by solvolyzing a specific lactone compound with water or an alcohol.
CONSTITUTION: An optically active lactone compound of formula I is solvolyzed with a compound of formula II (R is H or lower alkyl), preferably in the presence of an acidic catalyst, e.g. oxalic acid, at a temperature in the range of room temperature to the boiling point of the solvent for 30min to 4hr to give optically active cyclopentenolone of formula III readily. The resultant compound of formula III is esterified with various acids mainly chrysanthemic acid to afford powerful insecticides.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11477279A JPS5639084A (en) | 1979-09-06 | 1979-09-06 | Preparation of optically active cyclopentenolone |
DE8080105103T DE3061543D1 (en) | 1979-09-06 | 1980-08-27 | Cis-(1r,2s)-3,3-dimethyl-2-((4s)-3-methyl-2-(2-propynyl)cyclopent-2-en-1-on-4-yloxyhydroxymethyl)-cyclopropanecarboxylic lactone and method of producing (s)-4-hydroxy-3-methyl-2-(2-propynyl)-cyclopent-2-en-1-on |
EP19800105103 EP0029092B1 (en) | 1979-09-06 | 1980-08-27 | Cis-(1r,2s)-3,3-dimethyl-2-((4s)-3-methyl-2-(2-propynyl)cyclopent-2-en-1-on-4-yloxyhydroxymethyl)-cyclopropanecarboxylic lactone and method of producing (s)-4-hydroxy-3-methyl-2-(2-propynyl)-cyclopent-2-en-1-on |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11477279A JPS5639084A (en) | 1979-09-06 | 1979-09-06 | Preparation of optically active cyclopentenolone |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5639084A true JPS5639084A (en) | 1981-04-14 |
Family
ID=14646297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11477279A Pending JPS5639084A (en) | 1979-09-06 | 1979-09-06 | Preparation of optically active cyclopentenolone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5639084A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0149674A1 (en) * | 1983-03-18 | 1985-07-31 | Sumitomo Chemical Company, Limited | Process for biochemical optical resulution of cyclopentenolone derivative |
-
1979
- 1979-09-06 JP JP11477279A patent/JPS5639084A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0149674A1 (en) * | 1983-03-18 | 1985-07-31 | Sumitomo Chemical Company, Limited | Process for biochemical optical resulution of cyclopentenolone derivative |
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