Copper(I)-catalyzed tandem inter–intramolecular cyclization reactions of zirconacycles: formation of highly substituted styrenes, vinylcyclohexadienes, and related compounds
Copper(I)-catalyzed or mediated reactions of five-membered zirconacycles with propargyl or allyl halides afforded a variety of useful vinylated cyclic compounds, including highly substituted styrenes, vinylcyclohexadienes and methylenecycloheptadienes, via tandem inter–intramolecular allylation reactions.