申请人:NAGASE & COMPANY, LTD.
公开号:EP0826652A1
公开(公告)日:1998-03-04
A process for preparing an asymmetric compound by using a metal complex which enables the preparation of an optically active substance not containing any rare earth metal element and having a high optical purity. A metal complex composed of an optically active binaphthol of genes formula (1), aluminum and an alkali metal (or an alkaline earth metal) is prepared by reacting the optically active binaphthol with lithium aluminum hydride or with a dialkylaluminum hydride and a base containing an alkali metal (or an lakaline earth metal). The use of this metal complex in the asymmetric Michael reaction or asymmetric phosphonylation as the catalyst makes it possible to prepare an asymmetric compound having a high optical purity in a high yield.
一种利用金属络合物制备不对称化合物的工艺,该工艺可制备不含任何稀土金属元素且光学纯度高的光学活性物质。将光学活性二萘酚与氢化铝锂或氢化二烷基铝和含有碱金属(或碱土金属)的碱反应,制备出一种由基因式(1)的光学活性二萘酚、铝和碱金属(或碱土金属)组成的金属络合物。在不对称迈克尔反应或不对称膦酰化反应中使用这种金属络合物作为催化剂,可以制备出光学纯度高、收率高的不对称化合物。