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■ Site-Selective Introduction of an Enamido Group at the C(3)-Position of Indoles

Tomoya Miura,* Qiang Zhao, Yuuta Funakoshi, and Masahiro Murakami*

*Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, youdai-katsura, Nishikyo, Kyoto 615-8510, Japan

Abstract

An enamido group is introduced site-selectively at the C(3)-position of indoles by the rhodium(II)-catalyzed reaction with N-sulfonyl-1,2,3-triazoles. Formally, an α-imino rhodium carbene complex is inserted into the C(3)-H bond of an indole.