Aryl sulfoxides via palladium-catalyzed arylation of sulfenate anions

Palladium- catalyzed arylation of sulfenate anions generated from,- sulfinyl esters can take place under biphasic conditions. This hitherto unknown reaction provides a simple, mild, and efficient route to aryl sulfoxides in good yields. The development of a new pseudo- domino type I procedure involving a sulfinylation followed by a Mirozoki - Heck coupling is also described.