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Synfacts 2008(1): 0103-0103  
DOI: 10.1055/s-2007-991449
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York

Polyaniline Salt Catalyzed Cycloaddition of CO2 to Epoxides

Contributor(s): Yasuhiro Uozumi, Yoichi M. A. Yamada
J. He, T. Wu, Z. Zhang, K. Ding, B. Han*, Y. Xie, T. Jiang, Z. Liu
institute of Chemistry, Chinese Academy of Sciences, Beijing, P. R. of China
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Publication History

Publication Date:
18 December 2007 (online)

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Significance

The catalytic activity of polyaniline-HX (X = I, Br, Cl) (PANI-HI, PANI-HBr, PANI-HCl), as heterogeneous catalysts, was studied for the cycloaddition of carbon dioxide to propylene oxide. Thus, the reaction of CO2 and propylene oxide (17.4 mmol) was carried out with PANI-HI (0.2 g) at 115 °C under 5 MPa for 5 hours to give propylene carbonate in 99%. PANI-HI was reused four times without any significant loss of catalytic acitivity. The reaction of CO2 with epichlorohydrin was also carried out for 4 hours under similar conditions to give the corresponding carbonate in >95% yield.