Ruthenium-catalyzed cyclization of N-carbamoyl indolines with alkynes: an efficient route to pyrroloquinolinones
作者:Ramasamy Manoharan、Masilamani Jeganmohan
DOI:10.1039/c5ob01146a
日期:——
A regioselective synthesis of substituted pyrroloquinolinones via a ruthenium-catalyzed oxidative cyclization of substituted N-carbamoyl indolines with alkynes is described. The cyclization reaction was compatible with various symmetrical and unsymmetrical alkynes including substituted propiolates. Later, we performed the aromatization of pyrroloquinolinones into indole derivatives in the presence
Oxidative Palladium(II)-Catalyzed C-7 Alkenylation of Indolines
作者:Lin-Yu Jiao、Martin Oestreich
DOI:10.1021/ol402687t
日期:2013.10.18
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