Reactivity of Selected Mono- and Dimethylpyridines under Conditions of Oxidative Ammonolysis

Autor: A. P. Serebryanskaya, P. B. Vorobyev
Rok vydání: 2019
Předmět:
Zdroj: Russian Journal of General Chemistry. 89:1990-1997
ISSN: 1608-3350
1070-3632
DOI: 10.1134/s1070363219100025
Popis: The reactivity of 3-methyl-, 4-methyl-, 2,3-dimethyl-, and 3,4-dimethylpyridines under the oxidative ammonolysis on vanadium oxide catalysts has been studied. The yield of monocyanopyridines has been related to the simulated values of the deprotonation enthalpy of methyl substituents being converted into the cyano group, both in the gas phase and under conditions simulating chemisorption at the acid center of the catalyst. Differences in the mechanism of conversion of the primary products of oxidative ammonolysis of 2,3- and 3,4-dimethylpyridines (2-cyano-3-methyl- and 4-cyano-3-methylpyridines) at elevated temperature have been revealed.
Databáze: OpenAIRE