JPS5615236A - Production of cyclopentenolone - Google Patents
Production of cyclopentenoloneInfo
- Publication number
- JPS5615236A JPS5615236A JP9113279A JP9113279A JPS5615236A JP S5615236 A JPS5615236 A JP S5615236A JP 9113279 A JP9113279 A JP 9113279A JP 9113279 A JP9113279 A JP 9113279A JP S5615236 A JPS5615236 A JP S5615236A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- cyclopentenolone
- compound
- furan derivative
- react
- 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
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: A novel substituted furan derivative is used as a starting material and the reaction is effected under an acidic condition to produce cyclopentenolone used as an intermediate of agricultural chemical and medicine with simple operations in high yield without environmental troubles.
CONSTITUTION: A furan compound of formula I (R1 is methyl) is reduced to an alcohol, which is made to react with a halide to give a compound of formula II (R2 is alkyl, alkenyl, alkynyl). Further, the compound of formula II is made to react with chlorine or bromine to form a novel substituted furan derivative of formula III(n is 5 or less; R3 is alkyl; A is O or S). The furan derivative is used as a starting material and the reaction is effected in a solvent such as water or methanol in the presence of an acid such as sulfuric, acetic or phthalic acid at 0°C to the boiling point to give cyclopentenolone of formula IV.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9113279A JPS5615236A (en) | 1979-07-17 | 1979-07-17 | Production of cyclopentenolone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9113279A JPS5615236A (en) | 1979-07-17 | 1979-07-17 | Production of cyclopentenolone |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5615236A true JPS5615236A (en) | 1981-02-14 |
Family
ID=14018004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9113279A Pending JPS5615236A (en) | 1979-07-17 | 1979-07-17 | Production of cyclopentenolone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5615236A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5116869A (en) * | 1988-04-19 | 1992-05-26 | Teijin Limited | 2-substituted-2-cyclopentenones |
-
1979
- 1979-07-17 JP JP9113279A patent/JPS5615236A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5116869A (en) * | 1988-04-19 | 1992-05-26 | Teijin Limited | 2-substituted-2-cyclopentenones |
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