Iron-Catalyzed Carboamination of Olefins: Synthesis of Amines and Disubstituted β-Amino Acids
作者:Bo Qian、Shaowei Chen、Ting Wang、Xinhao Zhang、Hongli Bao
DOI:10.1021/jacs.7b06590
日期:2017.9.20
Intermolecular carboamination of olefins with general alkyl groups is an unsolved problem. Diastereoselective carboamination of acyclic olefins represents an additional challenge in intermolecular carboaminations. We have developed a general alkylamination of vinylarenes and the unprecedented diastereoselective anti-carboamination of unsaturated esters, generating amines and unnatural β-amino acids
具有一般烷基的烯烃的分子间碳氨基化是一个未解决的问题。无环烯烃的非对映选择性碳胺化代表了分子间碳胺化的额外挑战。我们开发了乙烯基芳烃的一般烷基胺化和前所未有的不饱和酯的非对映选择性抗碳胺化,生成胺和非天然 β-氨基酸。这种烷基胺化是通过双官能烷基化试剂和铁催化剂实现的。很容易从脂肪酸合成的烷基二酰基过氧化物既可用作烷基化试剂,也可用作内部氧化剂。一项计算研究表明,将腈添加到碳正离子中是决定非对映选择性的步骤,并且提出了超共轭来解释高度非对映选择性的抗碳化。