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.
一种用于制备光学活性α-烷基羰基化合物并保留起始化合物立体信息的方法。本方法使用的起始化合物是一种羰基化合物,其α-位置具有一个通过构型反转被烷基取代的离去基。使用烷基
镁格氏试剂和
锌(II)盐或
锌有机基团进行离去基的取代。该方法可在非常温和的温度(例如0℃)下使用易于制备和经济的起始化合物以及无毒催化剂制备光学活性α-烷基羰基化合物,并且可能获得非常高的产率。