Synthesis of Indole-3-carboxylic Acid Derivatives by Pd(0)-Catalyzed Intramolecular α-Arylation of β-(2-Iodoanilino) Esters
摘要:
beta-(2-Iodoanilino) esters undergo intramolecular alpha-arylation in the presence of Pd(PPh3)(4) and potassium phenoxide. The reaction is a useful methodology for the preparation of indole-3-carboxylic acid ester derivatives.
Palladium-Catalyzed Regioselective Aerobic Oxidative CH/NH Carbonylation of Heteroarenes under Base-Free Conditions
作者:Hua Zhang、Dong Liu、Caiyou Chen、Chao Liu、Aiwen Lei
DOI:10.1002/chem.201101300
日期:2011.8.22
balloon pressure of CO, the direct oxidative carbonylation of various heteroarenes with different alcohols was achieved in good to high yields with air as the oxidant in the presence of PdCl2(PPh3)2 (see scheme). Notably, this transformation was carried out under base‐free conditions. The reaction showed remarkably high regioselectivity and presents an environmentally benign protocol for the synthesis