title: Stereoselective Ir(III)-catalyzed dimerization reaction of enynes: an entry to functionalized polyunsaturated and cyclic systems.
abstract: The Ir(III) complex [Ir(2)H(2)I(3)((rac)-Binap)(2)](+)I(-) efficiently promotes the selective dimerization of 1,6-, 1,7-enynes and functionalized alkynes. This catalytic process results in the formation of head-to-head isomers with (E)-stereoselectivity. Subsequent Rh-catalyzed cycloisomerization under reductive conditions led to the corresponding 1,2-dialkylidenecyclopentane derivatives.
authors.affiliation: Laboratoire Charles Friedel, Ecole Nationale Supérieure de Chimie de Paris Chimie ParisTech UMR 7223, 11 rue P. et M. Curie, F-75231 Paris Cedex 05, France.
authors.forename: Mehdi
authors.initials: M
authors.lastname: Ez-Zoubir
authors.forename: Florent
authors.initials: F
authors.lastname: Le Boucher d'Herouville
authors.forename: Jack A
authors.initials: JA
authors.lastname: Brown
authors.forename: Virginie
authors.initials: V
authors.lastname: Ratovelomanana-Vidal
authors.forename: Véronique
authors.initials: V
authors.lastname: Michelet
mesh_terms: D000475:Alkenes / Q000138:chemical synthesis* / Q000737:chemistry; D000480:Alkynes / Q000138:chemical synthesis* / Q000737:chemistry*; D002384:Catalysis; D003500:Cyclization; D019281:Dimerization; D007495:Iridium / Q000737:chemistry*; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D000475:Alkenes; D000480:Alkynes; D009942:Organometallic Compounds; D007495:Iridium