title: Cycloaddition of carbon dioxide and epoxides using pentaerythritol and halides as dual catalyst system.
abstract: The combination of pentaerythritol with nucleophilic halide salts such as nBu4NI is used as a dual catalyst system for the cycloaddition of carbon dioxide (CO2) with a broad range of organic epoxides yielding the respective cyclic carbonates. Due to synergistic effects of the organocatalysts, excellent yields and selectivities could be achieved under mild reaction conditions. Moreover, the nontoxic, cost-efficient, and readily available system is easily recyclable without significant loss of reactivity, representing an exceptional sustainable approach for the fixation of CO2.
authors.affiliation: Chair of Inorganic Chemistry/Molecular Catalysis, Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer Str. 1, 85747 Garching bei München (Germany), Fax: (+49) 89-289-13473.
authors.forename: Michael E
authors.initials: ME
authors.lastname: Wilhelm
authors.forename: Michael H
authors.initials: MH
authors.lastname: Anthofer
authors.forename: Mirza
authors.initials: M
authors.lastname: Cokoja
authors.forename: Iulius I E
authors.initials: II
authors.lastname: Markovits
authors.forename: Wolfgang A
authors.initials: WA
authors.lastname: Herrmann
authors.forename: Fritz E
authors.initials: FE
authors.lastname: Kühn
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry*; D002384:Catalysis; D061565:Cycloaddition Reaction; D004852:Epoxy Compounds / Q000737:chemistry*; D006846:Hydrocarbons, Halogenated / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry; D015394:Molecular Structure; D011409:Propylene Glycols / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000737:chemistry
chemical_list: D004852:Epoxy Compounds; D006846:Hydrocarbons, Halogenated; D052578:Ionic Liquids; D011409:Propylene Glycols; D000644:Quaternary Ammonium Compounds; D002245:Carbon Dioxide; C009405:tetrabutylammonium; C008783:pentaerythritol
keywords: carbon dioxide fixation; cooperative effects; cycloaddition; green chemistry; organocatalysis