作者:Ye, Fu、Tong, Shiming、Yuan, Weiming
DOI:10.1021/acscatal.4c02602
日期:——
A ligand-free cross-coupling of vinyl halides and α-silylamines toward tertiary allylic alkylamines by merging nickel and photoredox catalysis is developed. A variety of (E)-vinyl electrophiles including conjugate divinyl halides and sterically hindered vinyl halides are coupled smoothly with α-silylamines to afford allylic amines under mild conditions with good yields and E-selectivity. Moreover,
通过结合镍和光氧化还原催化,开发了卤乙烯和α-甲硅烷基胺与叔烯丙基烷基胺的无配体交叉偶联。各种(E)-乙烯基亲电子试剂,包括共轭二乙烯基卤化物和位阻乙烯基卤化物,可以与α-甲硅烷基胺顺利偶联,在温和条件下以良好的产率和E-选择性生成烯丙胺。此外,通过简单地修饰光催化剂或延长照射时间,该反应可以通过光化学驱动的E→Z异构化提供Z-选择性烯丙胺作为主要产物。这种基于自由基的偶联策略提供了一种替代且有效的途径来构建具有良好且可调的 Z/E 选择性的叔烯丙基烷基胺。