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Tandem Carboxylation‐Hydration Reaction System from Methanol, CO 2 and Benzonitrile to Dimethyl Carbonate and Benzamide Catalyzed by CeO 2
Author(s) -
Honda Masayoshi,
Kuno Shintaro,
Sonehara Satoru,
Fujimoto Kenichiro,
Suzuki Kimihito,
Nakagawa Yoshinao,
Tomishige Keiichi
Publication year - 2011
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201000339
Subject(s) - benzonitrile , dimethyl carbonate , catalysis , chemistry , benzamide , methanol , calcination , carboxylation , tandem , decarboxylation , inorganic chemistry , medicinal chemistry , organic chemistry , materials science , composite material
CeO 2 is an effective catalyst for a new tandem reaction system; The synthesis of dimethyl carbonate (DMC) from methanol+ CO 2 and benzonitrile hydration to benzamide. In combination with benzonitrile hydration, the yield of DMC was drastically promoted even at CO 2 pressures as low as 0.1 MPa. The yields of methanol‐ and CO 2 ‐based DMC were as high as 47 % and 70 %, respectively. Calcination of the catalyst at 873 K after the reaction, enables the catalyst to be reused without any structural change, although benzamide, produced by the benzonitrile hydration, poisons of the catalyst. This reaction system can be applied to the synthesis of other dialkylcarbonates from their corresponding alcohols and CO 2 .