JPS5721333A - Preparation of cyclopentenolone - Google Patents

Preparation of cyclopentenolone

Info

Publication number
JPS5721333A
JPS5721333A JP9536880A JP9536880A JPS5721333A JP S5721333 A JPS5721333 A JP S5721333A JP 9536880 A JP9536880 A JP 9536880A JP 9536880 A JP9536880 A JP 9536880A JP S5721333 A JPS5721333 A JP S5721333A
Authority
JP
Japan
Prior art keywords
formula
acid
aqueous medium
heat
base
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
Application number
JP9536880A
Other languages
Japanese (ja)
Other versions
JPS6121541B2 (en
Inventor
Kenji Saito
Hiroshi Yamachika
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP9536880A priority Critical patent/JPS5721333A/en
Priority to US06/211,225 priority patent/US4510329A/en
Priority to HU802877A priority patent/HU186373B/en
Priority to DE8080107603T priority patent/DE3063194D1/en
Priority to EP80107603A priority patent/EP0035060B1/en
Priority to DK522380A priority patent/DK151795C/en
Publication of JPS5721333A publication Critical patent/JPS5721333A/en
Publication of JPS6121541B2 publication Critical patent/JPS6121541B2/ja
Granted legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To obtain the titled compound useful as an alcohol component of agricultural chemical directly by one process in short time in high yield, by heat- treating a furancarbinol compound in an aqueous medium.
CONSTITUTION: A furancarbinol compound shown by the formula I [R1 is ≤6C alkyl, ≤6C alkenyl or alkynyl having no unsaturated bond at linkage ends, group shown by the formula II (R2 is H, CH3, or halogen)] is dissolved of suspended in an aqueous medium, heated to 120W200°C, and heat-treated through reaction for 1W 10hr while being adjusted to pH3W7 with an acid, base, or a buffer solution of acid or base, to give a cyclopentenolone shown by the formula III. The use of a metal salt and/or surface active agent has great effects on reduction of reaction time, increase in yield, improvement of volume efficiency, etc.
COPYRIGHT: (C)1982,JPO&Japio
JP9536880A 1979-12-07 1980-07-11 Preparation of cyclopentenolone Granted JPS5721333A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP9536880A JPS5721333A (en) 1980-07-11 1980-07-11 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
JP9536880A JPS5721333A (en) 1980-07-11 1980-07-11 Preparation of cyclopentenolone

Publications (2)

Publication Number Publication Date
JPS5721333A true JPS5721333A (en) 1982-02-04
JPS6121541B2 JPS6121541B2 (en) 1986-05-27

Family

ID=14135673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9536880A Granted JPS5721333A (en) 1979-12-07 1980-07-11 Preparation of cyclopentenolone

Country Status (1)

Country Link
JP (1) JPS5721333A (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
TETRAHEDRON=1978 *

Also Published As

Publication number Publication date
JPS6121541B2 (en) 1986-05-27

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