Asymmetric Strecker Reaction with Chiral Amines: a Catalyst-Free Protocol Using Acetone Cyanohydrin in Water
作者:Matteo Pori、Paola Galletti、Roberto Soldati、Daria Giacomini
DOI:10.1002/ejoc.201201533
日期:2013.3
The synthesis of a series of new chiral α-aminonitriles was achieved in a diastereoselective Strecker reaction in a one-pot procedure with aldehydes, enantiopure amines, and acetone cyanohydrin in water. Primary and secondary amines derived from L-α-amino acids were used as sources of chirality. The reactions proceeded efficiently without any catalyst at room temperature. The diastereoselectivity of
一系列新的手性 α-氨基腈的合成是在非对映选择性 Strecker 反应中与醛、对映纯胺和丙酮氰醇在水中的单锅程序中合成的。源自 L-α-氨基酸的伯胺和仲胺用作手性来源。反应在室温下在没有任何催化剂的情况下有效进行。研究了该过程的非对映选择性和新手性 α-氨基腈的构型稳定性。报告了通过 NMR 分析鉴定不稳定中间体,并报告了不对称诱导的拟议机制和模型。据报道,脯氨酸衍生的手性 α-氨基腈化学转化为手性氨基二酸、氨基和酰胺。