From Vinyl Sulfides, Sulfoxides, and Sulfones to Vinyl Transition Metal Complexes

A transformation with promising versatility: The vinyl zirconium complex 1 can be prepared readily in situ from the educts mentioned in the title and reacts with electrophiles, including other transition metal complexes, to give polysubstituted olefins (see scheme; n=0–2, Cp=C5H5). A five-membered zirconacycle en route to the vinyl complex apparently isomerizes to give the stable E isomer before elimination.