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-bromo esters 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
通过使用 P,P=O 配体开发了钯催化的吲哚与 α-溴酯的 2-烷基化反应。该方法具有优异的区域选择性、温和的反应条件和良好的官能团相容性。P,P=O 配体以及 4Å 分子筛的使用对于转化的成功至关重要。机理研究表明反应通过自由基途径进行。