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Direct Cyclic Carbonate Synthesis from CO2 and Diol over Carboxylation/Hydration Cascade Catalyst of CeO2 with 2‑Cyanopyridine

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journal contribution
posted on 06.06.2014, 00:00 by Masayoshi Honda, Masazumi Tamura, Kenji Nakao, Kimihito Suzuki, Yoshinao Nakagawa, Keiichi Tomishige
We first achieved direct synthesis of propylene carbonate from CO2 and 1,2-propanediol in excellent yield (>99%) using a carboxylation/hydration cascade catalyst of CeO2 with 2-cyanopyridine. The catalyst system can be applied to syntheses of various cyclic carbonates, including 6-membered ring carbonates that are difficult to synthesize in high yields (62−>99%).