申请人:Degussa Aktiengesellschaft
公开号:US05723667A1
公开(公告)日:1998-03-03
A method of producing optically active tert-leucinol (formula I) of high enantiomeric purity ##STR1## by converting racemic (RS)-tert-leucinol into a diastereomeric salt pair by reaction with an optically active acid, removing the salt pair from solution by fractionated crystallization and separating therefrom the optically active acid to release the optically active tert-leucinol from the salt. The optically active acid used is an N-acylated tert-leucine of general formula VIII: ##STR2## in which R can be hydrogen or an alkyl-, arylalkyl- or aryl group with up to 20 C atoms and * signifies a chirality center.
一种生产高对映纯度光学活性tert-亮氨醇(化学式I)的方法,通过将外消旋(RS)-tert-亮氨醇与光学活性酸反应,将其转化为对映异构的盐对,通过分馏结晶从溶液中去除盐对,并将光学活性酸与之分离,以释放盐中的光学活性tert-亮氨醇。所使用的光学活性酸为一般式VIII的N-酰化tert-亮氨酸:其中R可以是氢或具有多达20个C原子的烷基,芳基烷基或芳基,*表示手性中心。