JPS54117423A - Preparation of jasmonic acid ester derivative, and novel intermediate - Google Patents
Preparation of jasmonic acid ester derivative, and novel intermediateInfo
- Publication number
- JPS54117423A JPS54117423A JP2443078A JP2443078A JPS54117423A JP S54117423 A JPS54117423 A JP S54117423A JP 2443078 A JP2443078 A JP 2443078A JP 2443078 A JP2443078 A JP 2443078A JP S54117423 A JPS54117423 A JP S54117423A
- Authority
- JP
- Japan
- Prior art keywords
- ketoester
- base
- chain
- ester
- acid methyl
- 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.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To prepare the title compound useful as a base of perfumery, in high yield and purity and in a short reaction process, by synthesizing a chain ketoester, which is a novel intermediate, from an easily synthesizable, low-cost raw material, and ring-closing the ketoester in the presence of a base.
CONSTITUTION: The objective compound V, e.g. methyl jasmonate, etc., is prepared by (1) condensing a β-ketoester I (R1 is CH3CH2C=CCH2-, CH3CH2CH= CHCH2-, etc.; R3 is methyl, ethyl), e.g. 3-oxo-6-nonylic acid methyl ester, etc. with 4-halocrotonic acid ester II (R2 is R3; X1 is halogen), e.g. 4-halobromocrotonic acid methyl ester, in the presence of a base to afford a chain ketodiester III (novel compound), (2) effecting de-alkoxycarbonylation of the ketodiester to obtain a chain ketoester IV, e.g. 6-oxododeca-2-en-9-ynoic acid methyl ester, etc., and (3) ring-closing the ester in the presence of a base.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2443078A JPS5943939B2 (en) | 1978-03-06 | 1978-03-06 | Novel linear keto mono- or di-ester and its production method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2443078A JPS5943939B2 (en) | 1978-03-06 | 1978-03-06 | Novel linear keto mono- or di-ester and its production method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54117423A true JPS54117423A (en) | 1979-09-12 |
JPS5943939B2 JPS5943939B2 (en) | 1984-10-25 |
Family
ID=12137924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2443078A Expired JPS5943939B2 (en) | 1978-03-06 | 1978-03-06 | Novel linear keto mono- or di-ester and its production method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5943939B2 (en) |
-
1978
- 1978-03-06 JP JP2443078A patent/JPS5943939B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5943939B2 (en) | 1984-10-25 |
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