申请人:Alfa Chemicals Italiana S.p.A.
公开号:US04423244A1
公开(公告)日:1983-12-27
A new process for the preparation of the d-2-(6-methoxy-2-naphthyl)-propionic acid of formula ##STR1## which comprises resolving a racemic mixture of the d- and 1-2-(5-halo-6-methoxy-2-naphthyl)-propionic acids of formula ##STR2## wherein halo stands for a halogen atom, recovering the d-isomer and subjecting this isomer to catalytic dehalogenation. Compound I is obtained in very high yields and with a high purity degree.
一种制备d-2-(6-甲氧基-2-萘基)-丙酸的新工艺,其包括分离d-和1-2-(5-卤代-6-甲氧基-2-萘基)-丙酸的外消旋混合物,其中卤代表示卤素原子,回收d-异构体并将该异构体进行催化脱卤反应。化合物I可高产率、高纯度地得到。