申请人:WARNER-LAMBERT COMPANY
公开号:EP0221474A1
公开(公告)日:1987-05-13
An improved process for the manufacture of the antipsoriatic agent, 6-chloro-l,4-diacetoxy-2,3-dimethoxynaphthalene, is herein described which involves in situ Diels-Alder coupling of 2,3-dimethoxybenzo-l,4-quinone with a 3-chloro-l-alkoxy-l,3-butadiene; l,4-elimination of the alcohol with aromatization of the chlorine-bearing ring, and acetylation.
本文描述了一种改进的抗银屑病剂--6-氯-l,4-二乙酰氧基-2,3-二甲氧基萘的生产工艺,其中包括 2,3-二甲氧基苯并-l,4-醌与 3-氯-l-烷氧基-l,3-丁二烯的原位 Diels-Alder 偶联;含氯环芳香化的 l,4-消除醇,以及乙酰化。