Synthesis of Polysubstituted Quinolines via Transition-Metal-Free Oxidative Cycloisomerization of o-Cinnamylanilines
摘要:
An efficient synthesis of 2-aryl 4-substituted quinolines from stable and readily available o-cinnamylanilines, prepared from anilines and cinnamylalcohols, has been developed. The reaction occurred via a regioselective 6-endo-trig intramolecular oxidative cyclization using (KOBu)-Bu-t as a mediator and DMSO as an oxidant at rt. The reaction showed a broad substrate scope with good to excellent yields.
Efficient synthesis of 2,4-disubstituted quinolines: calix[n]arene-catalyzed Povarov-hydrogen-transfer reaction cascade
作者:Juliana Baptista Simões、Ângelo de Fátima、Adão Aparecido Sabino、Luiz Claudio Almeida Barbosa、Sergio Antonio Fernandes
DOI:10.1039/c4ra02036g
日期:——
A new calixarene-catalyzed cascade process, involving Povarov reaction and hydrogen transfer, for the synthesis of 2,4-disubstituted quinolines is described.
Synthesis of Polysubstituted Quinolines via Transition-Metal-Free Oxidative Cycloisomerization of <i>o</i>-Cinnamylanilines
作者:Mohammad Rehan、Gurupada Hazra、Prasanta Ghorai
DOI:10.1021/acs.orglett.5b00419
日期:2015.4.3
An efficient synthesis of 2-aryl 4-substituted quinolines from stable and readily available o-cinnamylanilines, prepared from anilines and cinnamylalcohols, has been developed. The reaction occurred via a regioselective 6-endo-trig intramolecular oxidative cyclization using (KOBu)-Bu-t as a mediator and DMSO as an oxidant at rt. The reaction showed a broad substrate scope with good to excellent yields.