Hydroesterification of ethylene oxide catalyzed by 1-butyl-3-methylimidazolium cobalt tetracarbonyl ionic liquid

Hydroesterification of ethylene oxide catalyzed by 1-butyl-3-methylimidazolium cobalt... In this paper, functional ionic liquid 1-butyl-3-methylimidazolium cobalt tetracarbonyl [Bmim][Co(CO)4] is prepared in a metathesis reaction between [Bmim]Cl and KCo(CO)4. The structure of [Bmim]+ is illustrated by 1H NMR, while [Co(CO)4]− is confirmed by IR(νCO) spectrum. Methyl 3-hydroxypropionate(3-HPM), an intermediate to 1,3-propanediol (1,3-PDO), can be prepared in high yield by hydroesterification of ethylene oxide in the presence of a [Bmim][Co(CO)4] catalyst. Under a pressure of 3.7 MPa and at a temperature of 75 °C, the yield of 3-HPM can reach 90.8% in 10 h. Even after the catalyst is recycled three times, a yield of more than 80% can be obtained. A possible reaction mechanism has also been proposed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Hydroesterification of ethylene oxide catalyzed by 1-butyl-3-methylimidazolium cobalt tetracarbonyl ionic liquid

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Springer Netherlands
Copyright © 2010 by Springer Science+Business Media B.V.
Chemistry; Inorganic Chemistry ; Physical Chemistry ; Catalysis
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