Ir-Catalyzed C-H Amidation Using Carbamoyl Azides for the Syntheses of Unsymmetrical Ureas.

An iridium-catalyzed C-H amidation for the syntheses of unsymmetrical ureas was developed using carbamoyl azides (R(Rʹ)N-C(O)-N3) as the nitrogen source. A combination of iridium and silver gave an...