Photocatalytic Alkylation of Pyrroles and Indoles with α-Diazo Esters
作者:Łukasz W. Ciszewski、Jakub Durka、Dorota Gryko
DOI:10.1021/acs.orglett.9b02612
日期:2019.9.6
electron-rich aromatic compounds with diazo esters. C-2-alkylated indoles and pyrroles are obtained with good yields even though the photocatalyst loading is as low as 0.075 mol %. For EWG-substituted substrates, the addition of a catalytic amount of N,N-dimethyl-4-methoxyaniline is required. Both EWG-EWG- and EWG-EDG-substituted diazo esters are suitable as alkylatingagents. The reaction selectivity and mechanistic