Regioselective 2-alkylation of indoles with α-bromo esters catalyzed by Pd/P,P=O system
作者:Wei Tian、Bowen Li、Duanshuai Tian、Wenjun Tang
DOI:10.1016/j.cclet.2021.06.091
日期:2022.1
A palladium-catalyzed 2-alkylation of indoles with α-bromoesters is developed by employing a P,P=O ligand. The method features excellent regioselectivities, mild reaction conditions, and good functional group compatibility. The employment of the P,P=O ligand as well as 4Å molecular sieves were crucial for the success of the transformation. Mechanistic studies indicate the reaction proceed through