Abstract
Synthesis of cyclic carbonates from CO2 and terminal epoxides catalyzed by Mg, Ca and In BINOL complexes was achieved without organic solvents. Effects of temperature, CO2 pressure, reaction time and co-catalyst on the cycloaddition were investigated. Propylene carbonate was obtained under a CO2 pressure of 1.2 MPa within 10 hours in a yield of 98% catalyzed by Ca–BINOL at 120°C. The order of catalytic activity of the metal center is Ca > In > Mg. Copyright © 2014 John Wiley & Sons, Ltd.
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