JPS57197275A - Production of alpha-lactone - Google Patents

Production of alpha-lactone

Info

Publication number
JPS57197275A
JPS57197275A JP8207681A JP8207681A JPS57197275A JP S57197275 A JPS57197275 A JP S57197275A JP 8207681 A JP8207681 A JP 8207681A JP 8207681 A JP8207681 A JP 8207681A JP S57197275 A JPS57197275 A JP S57197275A
Authority
JP
Japan
Prior art keywords
lactone
boiling
fraction
amount
cyclopentanone
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
Application number
JP8207681A
Other languages
Japanese (ja)
Inventor
Koichi Kamogawa
Junji Kawashima
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.)
Zeon Corp
Original Assignee
Nippon Zeon 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 Nippon Zeon Co Ltd filed Critical Nippon Zeon Co Ltd
Priority to JP8207681A priority Critical patent/JPS57197275A/en
Publication of JPS57197275A publication Critical patent/JPS57197275A/en
Pending legal-status Critical Current

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  • Pyrane Compounds (AREA)

Abstract

PURPOSE: On the conversion of 2-substituted cyclopentanone into α-lactone by the Bayer-Villiger reaction, the high-boiling carboxylic fraction as a by-product is heat treated in the presence of an acidic catalyst to recover the titled compound from the reaction mixture.
CONSTITUTION: When a 2-substituted cyclopentanone is oxidized into a α-lactone in a lower carboxylic acid solvent in an amount of 0.5W10 times the volume of the cyclopentanone by means of a peroxide in an amount of 0.8 - 2mol. per mol. of the pentanone at 20W80°C for 0.5W30 hours, the high-boiling carboxylic acid fraction, preferably after the low-boiling fraction mainly consisting of the α- lactone is separated, is heat treated in the presence of an acidic catalyst in an amount of 0.1W10wt%, based on the high-boiling fraction at a temperature higher than 150, preferably above 160°C to recover the α-lactone from the reaction mixture.
COPYRIGHT: (C)1982,JPO&Japio
JP8207681A 1981-05-29 1981-05-29 Production of alpha-lactone Pending JPS57197275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8207681A JPS57197275A (en) 1981-05-29 1981-05-29 Production of alpha-lactone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8207681A JPS57197275A (en) 1981-05-29 1981-05-29 Production of alpha-lactone

Publications (1)

Publication Number Publication Date
JPS57197275A true JPS57197275A (en) 1982-12-03

Family

ID=13764371

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8207681A Pending JPS57197275A (en) 1981-05-29 1981-05-29 Production of alpha-lactone

Country Status (1)

Country Link
JP (1) JPS57197275A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0641768A4 (en) * 1991-11-07 1994-12-22 Sankyo Co Nitroxyalkylamide derivative.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0641768A4 (en) * 1991-11-07 1994-12-22 Sankyo Co Nitroxyalkylamide derivative.
EP0641768A1 (en) * 1991-11-07 1995-03-08 Sankyo Company Limited Nitroxyalkylamide derivative

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