Abstract
Oxidative ammonolysis of 3(4)-methyl- and 3,4-dimethylpyridines using vanadium oxide catalyst doped with Cr2O3, SnO2, and ZrO2 was studied. The yields of nitriles and conversion of the starting compounds were found to depend on the CH-acidity of the latter in the gas phase. The possible mechanisms of the formation of pyridine-3,4-dicarboxylic acid imide at the oxidative ammonolysis of 3,4-dimethylpyridine was discussed. The relation between the activity of the modified catalysts and the proton affinity of the vanadyl oxygen calculated by the extended Hückel method was established.
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Original Russian Text © P.B. Vorobyev, A.P. Serebryanskaya, 2012, published in Zhurnal Obshchei Khimii, 2012, Vol. 82, No. 12, pp. 2033–2039.
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Vorobyev, P.B., Serebryanskaya, A.P. Oxidative ammonolysis of 3(4)-methyl- and 3,4-dimethylpyridines using vanadium oxide catalysts. Russ J Gen Chem 82, 1987–1993 (2012). https://doi.org/10.1134/S1070363212120146
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DOI: https://doi.org/10.1134/S1070363212120146