title: 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
abstract: 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.
authors.affiliation: Catalysis Research Center and Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo 060-0811, Japan, CREST, Science and Technology Corporation (JST), Sapporo 060-0811, Japan, Aichi University of Education, Igaya, K.
authors.initials: C
authors.lastname: Xi
authors.initials: M
authors.lastname: Kotora
authors.initials: K
authors.lastname: Nakajima
authors.initials: T
authors.lastname: Takahashi