Document Type and Number:
Japanese Patent JPS5438096
Kind Code:
B1
Abstract:
1289918 Preparation of 3-oxo-#4,6 -steroids via 5,6-dihalosteroids G D SEARLE & CO 19 April 1971 [24 Feb 1970] 22333/71 Heading C2U 3-Oxo-#4,6 -steroids are prepared by reacting 3-hydroxy-#5 -steroids with for example an N-bromoalkanamide or N-bromoimide (to provide bromonium ions) and a source of HCl to give the corresponding 5,6-chlorobromides (and/ or bromochlorides), oxidizing these to the corresponding 3-ones, and dehydrohalogenating these. Novel products have the formula wherein X is CO or CH(#-OH).
Application Number:
JP870171A
Publication Date:
November 19, 1979
Filing Date:
February 24, 1971
Export Citation:
International Classes:
C07J1/00; C07J21/00; (IPC1-7): C07J21/00