Title:
【発明の名称】非ラセミの3―オキソシクロペンタンカルボン酸若しくは3―オキソシクロヘキサンカルボン酸又はそれらのC1―C6アルコールとのエステルのラセミ化のための方法
Document Type and Number:
Japanese Patent JPH06502393
Kind Code:
A
Abstract:
PCT No. PCT/EP91/01434 Sec. 371 Date Apr. 16, 1993 Sec. 102(e) Date Apr. 16, 1993 PCT Filed Jul. 31, 1991 PCT Pub. No. WO92/02483 PCT Pub. Date Feb. 29, 1992.Racemates are obtained from non-racemic 3-oxocyclopentane or 3-oxocyclohexane carboxylic acids or their esters by esterification and ketalization of the non-racemic acid with orthoformic acid ester in an alocohol, racemization and hydrolysis of the product obtained with an alcoholate and isolation of the racemate.
Inventors:
Sobotta, liner
Application Number:
JP51276791A
Publication Date:
March 17, 1994
Filing Date:
July 31, 1991
Export Citation:
Assignee:
Boehringer, Ingelheim, Kahge
International Classes:
C07C51/353; C07C51/487; C07C51/493; C07C62/24; C07B55/00; (IPC1-7): C07C62/24; C07B55/00; C07C51/353; C07C51/487; C07C51/493
Attorney, Agent or Firm:
Akaoka Michio