Effect of microwave heating on Ullmann-type heterocycle-aryl ether synthesis using chloro-heterocycles
作者:Noel D. D’Angelo、Joseph J. Peterson、Shon K. Booker、Ingrid Fellows、Celia Dominguez、Randall Hungate、Paul J. Reider、Tae-Seong Kim
DOI:10.1016/j.tetlet.2006.05.103
日期:2006.7
Ullmannethersynthesis was conducted on a variety of chloro-heterocycles with different phenols using optimized conditions involving copper powder and cesium carbonate. On many substrates, microwave heating afforded higher yields in significantly shorter reaction times compared to conventional heating conditions. These findings provide a facile method for aryl ethersynthesis from chloropyridines