Abstract
A novel and green method for the synthesis of dimethyl pyridine-3,5-dicarboxylate has been developed. It is PdCl2-catalyzed heterocyclotrimerization of methyl acrylate with urea in methanol/supercritical carbon dioxide. The target compound was obtained with a 75% isolated yield under the optimized conditions.
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Supported by the National Natural Science Foundation of China (Grant Nos. 20332030, 20572027, 20625205 and 20772034) and Guangdong Natural Science Foundation (Grant No. 07118070)
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Zou, B., Jiang, H. PdCl2-catalyzed heterocyclotrimerization in MeOH/scCO2: A versatile approach to dimethyl pyridine-3,5-dicarboxylate from methyl acrylate and urea. Sci. China Ser. B-Chem. 51, 447–451 (2008). https://doi.org/10.1007/s11426-008-0055-y
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DOI: https://doi.org/10.1007/s11426-008-0055-y