Mesitylcopper reacts with aryl iodides containing both electron-with- drawing and electrondonat~g groups in the presence of 1 equivalent BqNX (X = Br, I) and 1 mol.% of PhP~(PPh~)~ to give cross-coupling products in high yields. ... Organocopper compounds are widely used in organic syntheses due to their availability, relative stability and inertness towards active functional groups. Reactions of organocopper compounds with organic halides are ...