申请人:Ikeda Mohando Co., Ltd.
公开号:US04283532A1
公开(公告)日:1981-08-11
Disclosed is a process for the preparation of o-(2,6-dichloroanilino)phenylacetic acid (Diclofenac) or its pharmacologically acceptable acid addition salt, which comprises hydrolyzing an N,N-disubstituted-o-(2,6-dichloroanilino)phenylacetamide derivative with an alkali. Also a novel intermediate for use in the preparation of Diclofenac, that is, an N,N-disubstituted-o-halogenophenylacetamide in which the halogen is iodine or bromine, is disclosed.
披露了一种制备o-(2,6-二氯苯胺基)苯乙酸(双氯芬酸)或其药理学上可接受的酸盐的方法,该方法包括用碱水解N,N-二取代的o-(2,6-二氯苯胺基)苯乙酰胺衍生物。还披露了一种用于制备双氯芬酸的新中间体,即N,N-二取代的o-卤代苯乙酰胺,其中卤素是碘或溴。