Pd-Catalyzed C═C Double-Bond Formation by Coupling of <i>N</i>-Tosylhydrazones with Benzyl Halides

Abstract

Pd-catalyzed reaction of N-tosylhydrazones with benzyl halides affords di- and trisubstituted olefins in high yields with excellent stereoselectivity. This coupling reaction is supposed to proceed through a migratory insertion of Pd carbene species.