发明名称 |
SELECTIVE CONVERSION OF 20-METHYLPREGNA-3,5,20(21)-TRIENE- 3,21-DIOL-DIACETATE TO 3-OXO-20-METHYLPREGNA-4,20(21)-DIENE -21-YL-ACETATE |
摘要 |
The present invention relates to the selective conversion of 20-methylpregna-3,5,20(21)-triene-3,21-diol-diacetate to 3-oxo-20-methylpregna-4,20(21)- diene-21-yl-acetate by the use of a halogenated solvent and a halogenated acid. This process provides improved recovery of 3-oxo-20-methylpregna-4,20(21)- diene-21-yl acetate which is a useful intermediate in the preparation of progesterone. |
申请公布号 |
AU4509479(A) |
申请公布日期 |
1979.10.04 |
申请号 |
AU19790045094 |
申请日期 |
1979.03.14 |
申请人 |
GENERAL MILLS CHEMICALS, INC. |
发明人 |
LEROY O. KRBECHEK |
分类号 |
C07J9/00 |
主分类号 |
C07J9/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|