Assembly of N,N-disubstituted-N′-arylureas via a copper-catalyzed one-pot three-component reaction of aryl bromides, potassium cyanate, and secondary amines
作者:Hongfei Yin、Bing Chen、Xiaojing Zhang、Xinye Yang、Yihua Zhang、Yongwen Jiang、Dawei Ma
DOI:10.1016/j.tet.2013.04.117
日期:2013.7
A three-component reaction of aryl bromides, potassiumcyanate, and secondary amines takes place at 110 °C in MeCN under the catalysis of Cu2O and 2-(2,6-dimethylphenylamino)-2-oxoacetic acid potassium salt, giving N,N-disubstituted-N′-arylureas in good to excellent yields. A number of functionalized aryl bromides and secondary amines were compatible with these conditions, and thereby providing a facile