Iridium-Catalyzed Direct Regioselective C4-Amidation of Indoles under Mild Conditions.

Org Lett

Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China.

Published: May 2017

An efficient Ir-catalyzed amidation of indoles with sulfonyl azides is disclosed, affording diverse C4-amidated indoles exclusively under mild conditions. In this protocol, a variety of indoles with commonly occurring functional groups such as formyl, acetyl, carboxyl, amide, and ester at the C3 position are well tolerated.

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http://dx.doi.org/10.1021/acs.orglett.7b00730DOI Listing

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