申请人:Breit Bernhard
公开号:US20100305352A1
公开(公告)日:2010-12-02
A method for the production of optically active α-alkylcarbonyl compounds with retention of the stereo information of the starting compound. The starting compound used here is a carbonyl compound which has, in the α-position, a leaving group which is substituted by an alkyl group with inversion of the configuration. The substitution of the leaving group is effected with the use of an alkylmagnesium Grignard and a zinc (II) salt or a zinc organyl. The method permits the production of optically active α-alkylcarbonyl compounds at very mild temperatures (for example 0° C.) with the use of starting compounds which are easy to prepare and economical and nontoxic catalysts, it also being possible to achieve a very high yield.
一种生产具有保留起始化合物立体信息的光学活性α-烷基羰基化合物的方法。这里使用的起始化合物是一种具有α-位置上的离去基团的羰基化合物,该离去基团被一个烷基团取代,并且立体构型发生倒转。通过使用烷基镁格氏试剂和锌(II)盐或锌有机基进行离去基团的取代。该方法允许在非常温和的温度条件下(例如0°C)生产光学活性的α-烷基羰基化合物,使用易于制备和经济实惠的起始化合物以及无毒的催化剂,同时也可以获得很高的产率。