申请人:Sekhsaria Chemicals Limited
公开号:US20040077870A1
公开(公告)日:2004-04-22
A process for the preparation of 1-(4′-fluorophenyl)-1-(3-dimethylamino-propyl)-5-phthalanecarbonitrile of formula (I), or a pharmaceutically acceptable salt thereof,
1
comprising performing two successive Grignard reactions on 5-bromophthalide, wherein the 5-bromophthalide is reacted with the first Grignard reagent in the presence of a Lewis acid, so reducing by-product formation and improving yields.
一种制备式(I)的1-(4'-氟苯基)-1-(3-二甲基氨基丙基)-5-邻苯二甲腈,或其药用可接受盐的方法,包括在5-溴邻苯二甲酸酐上进行两次连续的格氏试剂反应,其中5-溴邻苯二甲酸酐在Lewis酸存在下与第一格氏试剂反应,从而减少副产物形成并提高产率。