申请人:Nagase & Company, Ltd.
公开号:US05847186A1
公开(公告)日:1998-12-08
A process for producing an asymmetric compound using a metal complex containing no rare earth metal element is disclosed. The process affords an optically active compound having high optical purity. Optically active binaphthol having the chemical formula ##STR1## and lithium aluminum hydride are reacted, or the optically active binaphthol, a dialkyl aluminum hydride, and a base containing an alkali metal (or a base containing alkaline earth metal) are reacted to prepare a metal complex comprising optically active binaphthol, aluminum, and alkali metal (or alkaline earth metal). This metal complex can be used as a catalyst to perform an asymmetric Michael reaction, an asymmetric phosphonylation reaction, or the like, to obtain, in a high yield, an asymmetric compound having high optical purity.
披露了一种使用不含稀土金属元素的金属络合物生产不对称化合物的方法。该工艺提供了一种具有高光学纯度的光学活性化合物。具有化学式##STR1##的光学活性联萘酚和氢化锂铝反应,或者光学活性联萘酚、二烷基氢化铝和含有碱金属(或含有碱土金属)的碱反应,以制备包含光学活性联萘酚、铝和碱金属(或碱土金属)的金属络合物。这种金属络合物可以用作催化剂来执行不对称Michael反应、不对称磷酰化反应等,以高收率获得具有高光学纯度的不对称化合物。