申请人:SmithKline Beckman Corporation
公开号:US04705862A1
公开(公告)日:1987-11-10
New intermediates, namely 2-(2-halo-3,4-dimethoxybenzyl)-5-(4-methoxyphenyl)-oxazolidines, are prepared by a synthetic sequence which uses a Darzen's reaction in a homogeneous solvent system.
新的中间体,即2-(2-卤代-3,4-二甲氧基苯基)-5-(4-甲氧基苯基)-噁唑烷酮,通过在均相溶剂体系中使用达尔森反应合成序列制备。