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vol.58 issue1PREPARATION AND CHARACTERIZATION OF SOLID DISPERSIONS OF CARVEDILOL WITH POLOXAMER 188THEORETICAL STUDY OF COMPLEXES OF THE TYPE [Pt3(M-L)3(L')3J-X (L=CO,SO2,CNH; L'=PH3,CNH; X=Tl+, Hg0, MPH3+ (M = Cu, Au, Ag)) author indexsubject indexarticles search
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Journal of the Chilean Chemical Society

On-line version ISSN 0717-9707

Abstract

LIANG, ZHENG YONG; WANG, LILI; LIU, HUI  and  HUANG, JIN SHUO. SYNTHESIS OF UNSATURATED ESTERS VIA HIGHLY EFFICIENT ESTERIFICATION CATALYZED BY POLYMER GRAFTED QUARTERNARY AMMONIUM SALTS AS TRIPHASE CATALYSTS. J. Chil. Chem. Soc. [online]. 2013, vol.58, n.1, pp.1558-1561. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072013000100013.

A series of unsaturated esters were prepared via condensation of sodium carboxylates and alkenyl halide under the condition of macroporous polystyrene grafted quarternary ammonium salt as recyclable phase transfer catalyst, NaI as co-catalyst, Cu powder as inhibitor and H2O as solvent. Under optimal conditions, products yields are 78.2~ 96.0%. The catalyst can be convenient recycled and reutilized for about five times without losing its activity obviously.

Keywords : green chemistry; triphase catalysis; polymer grafted quarternary ammonium salt; unsaturated ester.

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