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Synfacts 2007(10): 1110-1110
DOI: 10.1055/s-2007-968962
DOI: 10.1055/s-2007-968962
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York
Synthesis of Organic Carbonates Using NAP-MgO
M. L. Kantam*, U. Pal, B. Sreedhar, B. M. Choudary
Indian Institute of Chemical Technology and Ogene Systems (I) Pvt. Ltd., Hyderabad, India
Weitere Informationen
Publikationsverlauf
Publikationsdatum:
07. November 2007 (online)
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.