The origin of diastereoselectivity in the addition of alkyl lithium to chiral Schiff bases has been investigated experimentally and theoretically and the formation of the major diastereomer can be explained from the energy minimized structure of the Schiff base in which the phenyl group has been found to orient in such a manner that it posed lesser steric hindrance to the incoming nucleophile as compared to the alkyl group
实验和理论研究了烷基
锂与手性席夫碱加成过程中非对映选择性的来源,主要非对映异构体的形成可以从席夫碱的能量最小化结构中得到解释。