Reaction of Zirconacycles with 3-Iodopropenoates and 3-Iodocycloenones in the Presence of CuCl: A New Pathway for the Formation of Cyclopentadienes and Spirocyclic Compounds
摘要:
Formation of cyclic compounds from zirconacycles has been performed by a combination of Michael addition and coupling with an alkenyl iodide moiety in the presence of a stoichiometric amount of CuCl. The reaction of 3-iodopropenoates with various zirconacyclopentadienes in the presence of a stoichiometric amount of CuCl afforded penta- and hexasubstituted cyclopentadienes. The reaction of 3-iodocycloenones with zirconacyclopentadienes, zirconacyclopentenes, or zirconacyclopentanes gave spirocyclic compounds in good yields.