Indolylbenzimidazole‐based ligands catalyze the coupling of arylboronic acids with aryl halides
作者:Meng‐Pei Wang、Chien‐Cheng Chiu、Ta‐Jung Lu、Dong‐Sheng Lee
DOI:10.1002/aoc.4348
日期:2018.6
A novel class of compounds bearing indole and benzimidazole rings was designed and easily synthesized from 2‐indolecarboxylic acid and o‐phenylenediamine. The catalytic system derived from a 2‐indolylbenzimidazole‐based ligand and Pd(OAc)2 in situ could lead to complete conversion of aryl bromides at 0.5 mol% Pd loading under mild reaction conditions. In the presence of a catalyst, sterically hindered