JPS56161344A - Preparation of 3-oxocyclopentene compound - Google Patents
Preparation of 3-oxocyclopentene compoundInfo
- Publication number
- JPS56161344A JPS56161344A JP6577180A JP6577180A JPS56161344A JP S56161344 A JPS56161344 A JP S56161344A JP 6577180 A JP6577180 A JP 6577180A JP 6577180 A JP6577180 A JP 6577180A JP S56161344 A JPS56161344 A JP S56161344A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- formula
- expressed
- compound expressed
- aqueous solvent
- 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 obtain the titled compound useful as an intermediate for an agricultural chemical and a medicine in a short time and high yield, by dissolving or suspending a furancarbinol compound in an aqueous solvent, increasing the temperatures, and regulating the pH in a specific range.
CONSTITUTION: A compound expressed by formula I [R1 is 1W6C alkyl, 1W6C alkenyl, alkynyl or a group expressed by formula II (R2 is H, CH3 or halogen) having no unsaturated bonds at the ends of the bond], is dissolved or suspended in an aqueous solution adjusted to pH3W6.5, preferably 3.5W5.8, at 80W100°C, to give the compound expressed by formula III. The aqueous solvent may be water alone or may contain a small amount of an organic solvent, e.g. toluene, xylene, diisopropyl ether or benzene, in an amount of 5W40 times that of the compound expressed by formula I. A metallic salt, e.g. MgCl2, and/or surfactant, may be effecitive in reducing the reaction time and improving the yield and volume efficiency.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6577180A JPS56161344A (en) | 1980-05-16 | 1980-05-16 | Preparation of 3-oxocyclopentene compound |
HU287680A HU186372B (en) | 1979-12-06 | 1980-12-03 | Process for producing 3-oxo-cyclopentene derivatives |
DK522280A DK160294C (en) | 1979-12-06 | 1980-12-05 | METHOD OF PREPARING 3-OXYCYCLOPENTENES |
DE8080107671T DE3063547D1 (en) | 1979-12-06 | 1980-12-05 | 3-hydroxy-4-cyclopentenones and process for their production |
EP19800107671 EP0031909B1 (en) | 1979-12-06 | 1980-12-05 | 3-hydroxy-4-cyclopentenones and process for their production |
US06/213,632 US4356326A (en) | 1979-12-06 | 1980-12-05 | Process for producing 3-oxocyclopentenes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6577180A JPS56161344A (en) | 1980-05-16 | 1980-05-16 | Preparation of 3-oxocyclopentene compound |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56161344A true JPS56161344A (en) | 1981-12-11 |
JPS6126975B2 JPS6126975B2 (en) | 1986-06-23 |
Family
ID=13296615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6577180A Granted JPS56161344A (en) | 1979-12-06 | 1980-05-16 | Preparation of 3-oxocyclopentene compound |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56161344A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0010761A1 (en) * | 1978-11-01 | 1980-05-14 | Sumitomo Chemical Company, Limited | Process for preparing 4-hydroxy-2-cyclopenten-I-ones, 2-methyl-2,5-dimethoxy-2,5-dihydrofurans and a process for their preparation |
-
1980
- 1980-05-16 JP JP6577180A patent/JPS56161344A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0010761A1 (en) * | 1978-11-01 | 1980-05-14 | Sumitomo Chemical Company, Limited | Process for preparing 4-hydroxy-2-cyclopenten-I-ones, 2-methyl-2,5-dimethoxy-2,5-dihydrofurans and a process for their preparation |
Also Published As
Publication number | Publication date |
---|---|
JPS6126975B2 (en) | 1986-06-23 |
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