title: Selective linear triene formation from different alkynes using Zr/Cu system.
abstract: Selective synthesis of linear trienes from three different alkynes was achieved in one-pot procedure using the Zr/Cu system. Zirconacyclopentadiene prepared from two different alkynes such as an alkyl-substituted alkyne and an aryl-substituted alkyne reacted with NCS gave chlorodienylzirconocene. It reacted with the third alkyne with electron-withdrawing groups in the presence of CuCl to afford the corresponding linear triene.
authors.affiliation: Catalysis Research Center and Graduate School of Life Science, Hokkaido University, and SORST, Japan Science and Technology Agency, Kita-ku, Sapporo 001-0021, Japan.
authors.forename: Ken-ichiro
authors.initials: K
authors.lastname: Kanno
authors.forename: Eri
authors.initials: E
authors.lastname: Igarashi
authors.forename: Lishan
authors.initials: L
authors.lastname: Zhou
authors.forename: Kiyohiko
authors.initials: K
authors.lastname: Nakajima
authors.forename: Tamotsu
authors.initials: T
authors.lastname: Takahashi
mesh_terms: D000475:Alkenes / Q000737:chemistry*; D000480:Alkynes / Q000737:chemistry*; D002384:Catalysis; D003300:Copper / Q000737:chemistry*; D003517:Cyclopentanes / Q000737:chemistry*; D008956:Models, Chemical; D009942:Organometallic Compounds / Q000138:chemical synthesis*; D015032:Zinc / Q000737:chemistry*; D015040:Zirconium / Q000737:chemistry*
chemical_list: D000475:Alkenes; D000480:Alkynes; D003517:Cyclopentanes; D009942:Organometallic Compounds; D003300:Copper; D015040:Zirconium; D015032:Zinc; C029892:cupric chloride