Abstract
Kinetic parameters of thermo-oxidative degradation of various derivatives of pyridine-N-oxide have been calculated. Thermo-oxidative degradation is a multi-stage process. 4-Substituted pyridine-N-oxides are more thermally stable than the 2-substituted isomers. Stability of 4-substituted pyridine-N-oxides towards thermo-oxidation is enhanced in the presence of electron-donating ability of the substituent. In the case of 4-styrylpyridine-N-oxide, the rate-limiting stage of thermo-oxidation is a chemical reaction; for other studied compounds, the limiting stage is free nucleation and further nuclei growth.
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Original Russian Text © S.N. Golubev, N.Sh. Lebedeva, Yu.A. Gubarev, A.I. V’yugin, V.P. Andreev, 2014, published in Zhurnal Obshchei Khimii, 2014, Vol. 84, No. 11, pp. 1809–1816.
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Golubev, S.N., Lebedeva, N.S., Gubarev, Y.A. et al. Thermo-oxidative degradation of styryl derivatives of pyridine-N-oxides. Russ J Gen Chem 84, 2107–2113 (2014). https://doi.org/10.1134/S1070363214110115
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DOI: https://doi.org/10.1134/S1070363214110115