Olefin synthesis by the Pd-catalyzed cross coupling on sulfonylhydrazones with aromatic sulfinates

Abstract This Letter describes the synthesis of olefins by coupling of electron deficient sulfonylhydrazones with aryl sulfinate salts in the presence of a palladium(II) catalyst under aerobic conditions. This methodology obviates the need for preparation of an organometallic and separate activation of the ketone starting material via a vinyl halide or triflate. The oxidant, reagent stoichiometry, and the electronics of the sulfinate coupling partner are reported.