-
11.
公开(公告)号:EP0085900A3
公开(公告)日:1984-05-30
申请号:EP83100734
申请日:1983-01-27
发明人: Annen, Klaus, Dr. , Laurent, Henry, Dr. , Hofmeister, Helmut, Dr. , Wiechert, Rudolf, Prof. Dr.
CPC分类号: C07J21/003 , C07J1/0011 , C07J1/0025 , C07J1/0048 , C07J5/0015 , C07J5/0053 , C07J7/002 , C07J7/0045
摘要: A process for preparing 6-methyl-Δ 4,6 -3-keto steroids of
wherein X is
, comprises reacting a corresponding Δ 4 -3-keto steroid with methoxymethyl acetate (CH 3 -O-CH 2 -OAc) in an inert solvent at temperatures above room temperature in the presence of an alkali metal acetate.