Regioselective Intermolecular Hydroamination of Unactivated Alkenes: “Co–H” Enabled Remote Functionalization
作者:Dandan Yang、Hai Huang、He Zhang、Li-Ming Yin、Mao-Ping Song、Jun-Long Niu
DOI:10.1021/acscatal.1c00625
日期:2021.6.4
transformation can smoothly accommodate a wide range of β,γ-unsaturated alkenes, γ,δ-unsaturated alkenes, and even challenging remote alkenes, providing a general and flexible protocol for the preparation of various β-, γ-, δ-, ε-, ζ-, and η-amino acid derivatives. The utility of this method was further demonstrated by the large-scale reaction and late-stage modification of drug molecules. Furthermore, a plausible
通过引入可移除的导向基团,实现了 Co-H 催化的未活化烯烃与各种胺亲电试剂的分子间加氢胺化。催化体系,由廉价的 Co(OAc) 2 ·4H 2 O (10 mol %) 和 PhSiH 3 组成,具有底物依赖性区域选择性、广泛的底物范围(57 个例子)以及避免使用添加剂或额外的配体。这种转变可以顺利地适应广泛的β,γ-不饱和烯烃、γ,δ-不饱和烯烃,甚至具有挑战性的远程烯烃,为各种β-、γ-、δ-、ε的制备提供了通用和灵活的方案-、ζ-和η-氨基酸衍生物。药物分子的大规模反应和后期修饰进一步证明了该方法的实用性。此外,提出了一个合理的机制,并得到了一系列控制实验和径向时钟实验的支持。