Abstract
The synthesis of cyclic carbonates from epoxides and carbon dioxide catalyzed by cyanocobalamin and n-Bu4NI system was achieved under 0.8?MPa CO2 pressure at 140 degrees C without organic solvents. Propylene carbonate was obtained in 99% yield within 6?h under the optimized reaction conditions. The cyanocobalamin catalyst could be recycled with water and retained moderate catalytic activity. Copyright (c) 2012 John Wiley & Sons, Ltd.
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