JPS56166144A - Preparation of cyclopentenolone - Google Patents
Preparation of cyclopentenoloneInfo
- Publication number
- JPS56166144A JPS56166144A JP7045680A JP7045680A JPS56166144A JP S56166144 A JPS56166144 A JP S56166144A JP 7045680 A JP7045680 A JP 7045680A JP 7045680 A JP7045680 A JP 7045680A JP S56166144 A JPS56166144 A JP S56166144A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- cyclopentenolone
- advantageously
- compound
- bond
- 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 a cyclopentenolone useful as an alcoholic component of an agricultural chemical industrially and advantageously, by treating a 5-methyl-2- furyl-carbinol compound in an aqueous solvent.
CONSTITUTION: A furancarbinol compound of formula II [R1 is 1W6C alkyl, 1W6C alkenyl or alkynyl having no unsaturated bond at the ends of the bond thereof or formula III (R2 is H, CH3 or halogen)] is dissolved or suspended in water solvent adjusted to pH3W6.5, preferably 3W6, more preferably 3.5W5.8, and the mixture is then reacted while adjusting the pH to the value described above at a temperature of preferably 80W100°C to give the cyclopentenolone of formula I directly in one step in a short time in very high yield and advantageously from the viewpoint of industrial operation. A metallic salt and/or basic substance or an acid may be added to the reaction solution at a point of time when the raw material or formula II is consumed.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7045680A JPS56166144A (en) | 1980-05-26 | 1980-05-26 | Preparation of cyclopentenolone |
US06/211,225 US4510329A (en) | 1979-12-07 | 1980-11-28 | Process for preparing cyclopentenolones |
HU802877A HU186373B (en) | 1979-12-07 | 1980-12-03 | Process for producing cyclopentanone derivatives |
DE8080107603T DE3063194D1 (en) | 1979-12-07 | 1980-12-04 | Process for preparing cyclopentenolones |
EP80107603A EP0035060B1 (en) | 1979-12-07 | 1980-12-04 | Process for preparing cyclopentenolones |
DK522380A DK151795C (en) | 1979-12-07 | 1980-12-05 | PROCEDURE FOR THE PREPARATION OF CYCLOPENTENOLONS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7045680A JPS56166144A (en) | 1980-05-26 | 1980-05-26 | Preparation of cyclopentenolone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56166144A true JPS56166144A (en) | 1981-12-21 |
JPS6133012B2 JPS6133012B2 (en) | 1986-07-31 |
Family
ID=13432022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7045680A Granted JPS56166144A (en) | 1979-12-07 | 1980-05-26 | Preparation of cyclopentenolone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56166144A (en) |
-
1980
- 1980-05-26 JP JP7045680A patent/JPS56166144A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6133012B2 (en) | 1986-07-31 |
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