Asymmetric induction was found to take place in nuclephilic substitutions using electrophiles with chiral leaving groups. Alanine was obtained with e.e. as high as 40 % after methylation of anion 3 by reagents 5 d–f.
发现使用具有手性离去基团的亲电试剂在亲核取代中发生不对称诱导。用试剂5 d–f使阴离子3甲基化后,ee含量高达40%,可得到丙
氨酸。