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Synfacts 2008(7): 0771-0771  
DOI: 10.1055/s-2008-1078435
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York

Synthesis of α-Alkylidene Cyclic Carbonates

Contributor(s): Yasuhiro Uozumi, Takao Osako
H.-F. Jiang*, A.-Z. Wang, H.-L. Liu, C.-R. Qi
South China University of Technology, Guangzhou, P. R. of China
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Publication History

Publication Date:
20 June 2008 (online)

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Significance

The cyclization of propargyl alcohols with supercritical carbon dioxide (14 MPa) was catalyzed by (dimethylamino)methyl-polystyrene-supported copper(I) iodide (DMAM-PS-CuI). The reaction was carried out in the presence of DMAM-PS-CuI at 40 °C to afford the corresponding α-alkylidene cyclic carbonates in 0-99% yield (12 examples). The catalyst was recovered by simple filtration and reused four times without significant loss of catalytic activity.