Copper-Catalyzed Ultrasound-Expedited N-Arylation of Sulfoximines using Diaryliodonium Salts

An ultrasound-accelerated route for an expeditious N-arylation of NH-sulfoximines is described that involves the use of diaryliodonium salts in aqueous polyethylene glycol-400 and copper(I) bromide as catalyst at room temperature. The high yields of the products and simple work-up are the highlights of the protocol.