Carboxy Group as a Remote and Selective Chelating Group for C−H Activation of Arenes
作者:Shangda Li、Hang Wang、Yunxiang Weng、Gang Li
DOI:10.1002/anie.201910691
日期:2019.12.16
The first example of carboxy group assisted, remote-selective C(sp2 )-H activation with a PdII catalyst has been developed and proceeds through a possible κ2 coordination of the carboxy group, thus suppressing the ortho-C-H activation through κ1 coordination. Besides meta-C-H olefination, direct meta-arylation of hydrocinnamic acid derivatives with low-cost aryl iodides has been achieved for the first