JPS56161344A - Preparation of 3-oxocyclopentene compound - Google Patents

Preparation of 3-oxocyclopentene compound

Info

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
Application number
JP6577180A
Other languages
Japanese (ja)
Other versions
JPS6126975B2 (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 JP6577180A priority Critical patent/JPS56161344A/en
Priority to HU287680A priority patent/HU186372B/en
Priority to DK522280A priority patent/DK160294C/en
Priority to DE8080107671T priority patent/DE3063547D1/en
Priority to EP19800107671 priority patent/EP0031909B1/en
Priority to US06/213,632 priority patent/US4356326A/en
Publication of JPS56161344A publication Critical patent/JPS56161344A/en
Publication of JPS6126975B2 publication Critical patent/JPS6126975B2/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 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
JP6577180A 1979-12-06 1980-05-16 Preparation of 3-oxocyclopentene compound Granted JPS56161344A (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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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