title: Recyclable Bifunctional Polystyrene and Silica Gel-Supported Organocatalyst for the Coupling of CO2 with Epoxides.
abstract: A bifunctional ammonium salt covalently bound to a polystyrene or silica support proved to be an efficient and recyclable catalyst for the solvent-free synthesis of cyclic carbonates from epoxides and CO2 . The catalyst can be easily recovered by simple filtration after the reaction and reused in up to 13 consecutive runs with retention of high activity and selectivity even at 90 °C. The scope and limitations of the reaction has been evaluated in terms of reaction conditions and substrate scope.
authors: Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein Straße 29a, 18059 Rostock (Germany), Fax: (+49) 381-1281-5132.
authors: Christina
authors: C
authors: Kohrt
authors: Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein Straße 29a, 18059 Rostock (Germany), Fax: (+49) 381-1281-5132. thomas.werner@catalysis.de.
authors: Thomas
authors: T
authors: Werner
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry*; D002384:Catalysis; D004852:Epoxy Compounds / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry*; D058428:Silica Gel; D012997:Solvents / Q000737:chemistry
chemical_list: D004852:Epoxy Compounds; D011137:Polystyrenes; D012997:Solvents; D002245:Carbon Dioxide; D058428:Silica Gel
keywords: carbon dioxide; catalyst immobilization; cyclic carbonates; organocatalysis; recycling