Research on Chemical Intermediates

, Volume 36, Issue 9, pp 1027–1035 | Cite as

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

  • Zhiguo Lv
  • Hengsheng Wang
  • Juan Li
  • Zhenmei Guo


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.


Hydroesterification Methyl 3-hydroxypropionate Ethylene oxide 1-Butyl-3-methylimidazolium cobalt tetracarbonyl Functional ionic liquid 



This research was supported by National Natural Science Foundation of China (20776071) and Introduced Talents Starting Foundation of QUST.


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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Zhiguo Lv
    • 1
  • Hengsheng Wang
    • 1
  • Juan Li
    • 1
  • Zhenmei Guo
    • 1
  1. 1.College of Chemical EngineeringQingdao University of Science and TechnologyQingdaoPeople’s Republic of China

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