acid. This catalyst exhibited the high catalytic performance (0.01–0.1 mol %) in the asymmetric alkylation of N-(diphenylmethylene)glycine tert-butyl ester compared to the existing chiral phase-transfer catalysts, thereby allowing to realize a general and useful procedure for highly practical enantioselective synthesis of structurally diverse natural and unnatural α-alkyl-α-amino acids.
利用已知的,容易获得的(S)-
1,1'-联萘-2,2'-二
羧酸的组合方法,可以制备非常有效的手性相转移催化剂(S)-2Db。与现有的手性相转移催化剂相比,该催化剂在N-(二苯基亚甲基)
甘氨酸叔丁酯的不对称烷基化反应中表现出较高的催化性能(0.01–0.1 mol%),从而可以实现通用且有用的步骤结构多样的天然和非天然α-烷基-
α-氨基酸的实际对映选择性合成。