title: A facile construction of bi- or tricyclic skeletons by nickel-catalyzed stereoselective cyclization of alkynylcycloalkanone.
abstract: A nickel-catalyzed intramolecular cyclization of alkynylalkanone in the presence of Et(3)SiH using an NHC ligand produced various carbo- and heterocycles in a stereoselective manner. The reaction would proceed via formation of oxanickelacycle followed by sigma-bond metathesis with silane to give a bi- or tricyclic compound.
authors.affiliation: Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan.
authors.forename: Nozomi
authors.initials: N
authors.lastname: Saito
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Sugimura
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Sato
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D002384:Catalysis; D020650:Combinatorial Chemistry Techniques; D003500:Cyclization; D006571:Heterocyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D007659:Ketones / Q000737:chemistry*; D015394:Molecular Structure; D009532:Nickel / Q000737:chemistry*; D012821:Silanes / Q000138:chemical synthesis* / Q000737:chemistry; D013237:Stereoisomerism
chemical_list: D000480:Alkynes; D006571:Heterocyclic Compounds; D007659:Ketones; D012821:Silanes; D009532:Nickel