An efficient and selective synthesis of 2,5-substituted pyrroles by gold-catalysed ring expansion of alkynyl aziridines
作者:Paul W. Davies、Nicolas Martin
DOI:10.1016/j.jorganchem.2010.08.040
日期:2011.1
A range of substituted alkynyl aziridines undergo a ring expansion to afford 2,5-substituted pyrroles under gold catalysis. While effective conditions can be generated from other gold sources, a combination of Ph3PAuCl and AgOTs generate a catalyst system that provides extremely clean cycloisomerisation reactions requiring minimal work-up and purification. (C) 2010 Elsevier B.V. All rights reserved.