Assembly of N,N-disubstituted-N′-arylureas via a copper-catalyzed one-pot three-component reaction of aryl bromides, potassium cyanate, and secondary amines
A three-component reaction of aryl bromides, potassium cyanate, and secondary amines takes place at 110 C in MeCN under the catalysis of Cu 2O and 2-(2,6-dimethylphenylamino)-2-oxoacetic acid potassium salt, giving N,N-disubstituted-N′-arylurea