Synthesis of bifunctional cyclic carbonates from CO2 catalysed by choline-based systems

TETRAHEDRON LETTERS

卷:54

Article

Amaral, Aderito J. R.¹  Coelho, Jorge F. J.¹  Serra, Armenio C.² 

[1] Univ Coimbra, CIEPQPF, Dept Chem Engn, P-3030790 Coimbra, Portugal

[2] Univ Coimbra, Dept Chem, P-3004535 Coimbra, Portugal

关键词: Carbon dioxide fixation;    Cyclic carbonates;    Choline iodide;    Green chemistry;   

DOI  :  10.1016/j.tetlet.2013.07.152

来源: Elsevier

【 摘 要 】

Easily prepared choline iodide is an active catalyst for the synthesis of cyclic carbonates through the coupling reaction of CO2 and epoxides using low pressure (1 MPa), moderate temperature (85 degrees C) and green solvents (ethanol and propan-2-ol). The effects of reaction temperature, pressure, reaction time and amount of catalyst used were also investigated. The results showed moderate to high yields and excellent selectivities of cyclic carbonates with vinyl or acrylate groups under mild reaction conditions. The heterogenization of choline over a Merrifield resin gives access to a supported catalyst with good recyclability and reactivity that can be extended to a variety of terminal epoxide substrates. (C) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

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