Process for the preparation of intermediates in vitamin D or vitamin D derivative syntheses
摘要
The invention relates to processes for the preparation of intermediates of the general formula I, which are very suitable for preparing vitamin D or vitamin D derivatives. The process comprises the substitution of an aliphatic iodide (general formula II) by an optionally substituted C3 or C4 building block. This building block (synthon) is an organonickel compound of the general formula III. <IMAGE>
申请公布号
DE4336429(C1)
申请公布日期
1994.12.01
申请号
DE19934336429
申请日期
1993.10.12
申请人
SCHERING AG, 13353 BERLIN, DE
发明人
STEINMEYER, ANDREAS, DR., 10629 BERLIN, DE;WALTER, DIRK, PROF. DR.HABIL., 07747 JENA, DE;FISCHER, REINALD, DR., 07749 JENA, DE;SCHOENECKER, BRUNO, DR. SC. NAT., 07743 JENA, DE
