title: Chiral bis(imidazolidine)pyridine-cu complex-catalyzed enantioselective [3+2]-cycloaddition of azomethine imines with propiolates.
abstract: [3+2] Cycloaddition of azomethine imines with electron-deficient terminal alkynes was smoothly catalyzed by a chiral bis(imidazolidine)pyridine-CuOAc complex to give bicyclic pyrazolo[1,2-a]pyrazolone derivatives with up to 74% ee.
authors.affiliation: Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan. tarai@faculty.chiba-u.jp
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Arai
authors.forename: Yuta
authors.initials: Y
authors.lastname: Ogino
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D002384:Catalysis; D056831:Coordination Complexes / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D048289:Imidazolidines / Q000737:chemistry*; D007097:Imines / Q000737:chemistry*; D013882:Thiosemicarbazones / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D056831:Coordination Complexes; D048289:Imidazolidines; D007097:Imines; D013882:Thiosemicarbazones; C512188:azomethine; D003300:Copper