title: Nickel-iminophosphine-catalyzed [4+2] cycloaddition of enones with allenes: synthesis of highly substituted dihydropyrans.
abstract: Enones were found to react with allenes intermolecularly in the presence of a catalytic amount of a nickel-iminophosphine complex to provide dihydropyrans via oxidative cyclization of an enone and Ni(0).
authors.affiliation: Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan.
authors.forename: Saori
authors.initials: S
authors.lastname: Sako
authors.forename: Takuya
authors.initials: T
authors.lastname: Kurahashi
authors.forename: Seijiro
authors.initials: S
authors.lastname: Matsubara
mesh_terms: D000466:Alkadienes / Q000737:chemistry*; D002384:Catalysis; D018360:Crystallography, X-Ray; D003500:Cyclization; D008968:Molecular Conformation; D009532:Nickel / Q000737:chemistry*; D010084:Oxidation-Reduction; D010720:Phosphines / Q000737:chemistry*; D011714:Pyrans / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D000466:Alkadienes; D010720:Phosphines; D011714:Pyrans; C025947:propadiene; D009532:Nickel; C044646:phosphine