Document Type and Number:
Japanese Patent JPS546547
Kind Code:
B1
Abstract:
1325080 Arylsulphonyl olefinic carboxylic compounds RHONE-POULENC SA 4 Aug 1971 [5 Aug 1970] 930/70 Divided out of 1325079 Heading C2C The invention comprises arylsulphonyl olefins of the formula wherein R is aryl and Q is H or a monovalent hydrocarbon radical. They may be obtained by reacting an alkali metal sulphinate of formula RSO 2 M wherein M is an alkali metal with a γ- halogenosenecioate ester of a hydroxy compound of the formula QOH where Q is a hydrocarbon radical, and when compounds in which Q is H are required saponifying the ester. An example is given for the preparation of ethyl γ-(phenylsulphonyl)senecioate. Ethyl γ-bromosenecioate may be obtained by bromination of ethylsenecioate with N-bromosuccinimide.
Application Number:
JP5870971A
Publication Date:
March 29, 1979
Filing Date:
August 05, 1971
Export Citation:
International Classes:
C07C57/02; C07C317/14; C07C403/00; C11D1/28; C07C; (IPC1-7): C07C147/06