An easy, efficient and quick synthesis of N-benzoyl-(and N-substituted benzoyl)-N,N'dialkylureas, in good yields, under solvent-free conditions is described. First, the reaction between a carboxylic acid and a disubstituted carbodiimide was carried out employing microwave radiation, and later on the same reaction was performed separately under dry heating without any radiation. The yields are comparable in both cases.
microwave irradiation; N,N'-dialkylureas; carbodiimides; solvent-free conditions
