title: Selective Synthesis of Cyclic Carbonate by Salalen-Aluminum Complexes and Mechanistic Studies.
abstract: Salalen-aluminum complexes were synthesized and used as catalysts in the reactions of CO2with different epoxides. The reaction of cyclohexene oxide and CO2was thoroughly investigated. In particular, the effect of the reaction conditions (nature and equivalents of the co-catalyst, CO2pressure, and temperature) and of the ligands (substituents on the ancillary ligand, nature of the labile ligand, and nature of the nitrogen-donor atoms) on the results of this reaction was studied. The cycloaddition reaction of CO2with terminal epoxides bearing different functional groups was realized. Moreover, NMR mechanistic studies provided information on the catalytic cycle. Interestingly, the characterization of an intermediate species in the mechanism of the reaction of cyclohexene oxide with CO2, catalyzed by one of the salalen-aluminum complexes, was accomplished.
authors.affiliation: Department of Chemistry and Biology "A. Zambelli", University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano (SA), Italy.
authors.forename: Mariachiara
authors.initials: M
authors.lastname: Cozzolino
authors.affiliation: School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978, Israel.
authors.forename: Tomer
authors.initials: T
authors.lastname: Rosen
authors.affiliation: School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978, Israel.
authors.forename: Israel
authors.initials: I
authors.lastname: Goldberg
authors.affiliation: Department of Chemistry and Biology "A. Zambelli", University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano (SA), Italy.
authors.forename: Mina
authors.initials: M
authors.lastname: Mazzeo
authors.affiliation: Department of Physics "E. Caianiello", University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano (SA), Italy.
authors.forename: Marina
authors.initials: M
authors.lastname: Lamberti
mesh_terms: D000535:Aluminum / Q000737:chemistry*; D002254:Carbonates / Q000138:chemical synthesis* / Q000737:chemistry*; D002384:Catalysis; D060326:Chemistry Techniques, Synthetic; D008958:Models, Molecular; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000737:chemistry*
chemical_list: D002254:Carbonates; D009942:Organometallic Compounds; D000535:Aluminum
keywords: N,O ligands; carbon dioxide capture; cycloaddition; homogeneous catalysis; reaction mechanism