Oxidative Palladium(II)-Catalyzed C-7 Alkenylation of Indolines
Organic Letters2013Vol. 15(20), pp. 5374–5377
Citations Over TimeTop 10% of 2013 papers
Abstract
A mild procedure for C-7-selective C-H alkenylation of various indolines under oxidative palladium(II) catalysis is reported. A fully substituted urea, formed by carbamoylation of the indoline nitrogen atom, functions as a directing group. Both α,β-unsaturated acceptors and styrenes participate in this direct C-H functionalization. With a free NH group at the urea terminus, the nitrogen atom subsequently cyclizes in a 1,4-fashion to yield a six-membered ring.
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