Ni-Catalyzed Regiodivergent and Stereoselective Hydroalkylation of Acyclic Branched Dienes with Unstabilized C(sp<sup>3</sup>) Nucleophiles
作者:Wen Shao、Céline Besnard、Laure Guénée、Clément Mazet
DOI:10.1021/jacs.0c08319
日期:2020.9.23
unstabilized C(sp3) nucleophiles, a highly regioselective 1,4-addition process is favored. The addition products are obtained in high yield and with excellent stereocontrol of the internal olefin. Using a chiral ligand and imides as carbon nucleophiles, a 3,4-addition protocol was developed enabling to construct two contiguous tertiary stereocenters in a single step with moderate to high levels of diastereocontrol
报道了两种互补的区域发散 [(P,N)Ni] 催化的支化二烯加氢烷基化反应。当酰胺用作不稳定的 C(sp3) 亲核试剂时,高度区域选择性的 1,4-加成过程是有利的。以高收率获得加成产物,并且内烯烃具有优异的立体控制。使用手性配体和酰亚胺作为碳亲核试剂,开发了 3,4-加成方案,能够在一个步骤中构建两个连续的三级立体中心,具有中到高水平的非对映控制和出色的对映控制。这两种方法都在温和的反应条件下操作,表现出广泛的范围和优异的官能团耐受性。3,4-加氢烷基化反应的合成潜力是通过一系列后催化修饰建立的。