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Synfacts 2007(10): 1110-1110  
DOI: 10.1055/s-2007-968962
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York

Synthesis of Organic Carbonates Using NAP-MgO

Contributor(s): Yasuhiro Uozumi, Hiroe Takenaka
M. L. Kantam*, U. Pal, B. Sreedhar, B. M. Choudary
Indian Institute of Chemical Technology and Ogene Systems (I) Pvt. Ltd., Hyderabad, India
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Publication History

Publication Date:
07 November 2007 (online)

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Significance

The direct condensation of various aromatic, cyclic, heterocyclic, and aliphatic alcohols with excess amount of diethyl carbonate was carried out in the presence of nanocrystalline magnesium oxide (NAP-MgO) under solvent-free conditions to give the corresponding unsymmetrical organic carbonates in 88-99% yield and 96-100% selectivity. The catalyst NAP-MgO can be recovered by simple centrifugation and reused after re-activation (N2, 250 °C, 60 min) to exhibit consistent activity for four cycles.