Rh(I)-Catalyzed Hydroamidation of Olefins via Selective Activation of N–H Bonds in Aliphatic Amines
作者:Kaiwu Dong、Xianjie Fang、Ralf Jackstell、Gabor Laurenczy、Yuehui Li、Matthias Beller
DOI:10.1021/jacs.5b02218
日期:2015.5.13
Hydroamidation of olefins constitutes an ideal, atom-efficient method to prepare carboxylic amides from easily available olefins, CO, and amines. So far, aliphatic amines are not suitable for these transformations. Here, we present a ligand- and additive-free Rh(I) catalyst as solution to this problem. Various amides are obtained in good yields and excellent regioselectivities. Notably, chemoselective
烯烃的加氢酰胺化是一种理想的、原子效率高的方法,可以从容易获得的烯烃、CO 和胺类制备羧酰胺。到目前为止,脂肪胺不适合这些转化。在这里,我们提出了一种不含配体和添加剂的 Rh(I) 催化剂来解决这个问题。以良好的产率和优异的区域选择性获得了各种酰胺。值得注意的是,脂肪胺的化学选择性酰胺化发生在芳香胺和醇的存在下。机理研究表明,Rh-酰基物质的存在是所提出的 Rh(I)-催化循环中选择性和限速步骤的关键中间体。