Abstract
Mechanisms of the reaction of di- and trihydroxybenzenes with 2,2′-diphenyl-1-picrylhydrazyl (stable radical) in aprotic media of different polarity have been elucidated by experimental and quantum-chemical methods. Kinetic, stoichiometric, and activation parameters of the reaction have been determined. In benzene (nonpolar solvent), the studied reaction occurs via the hydrogen atom transfer mechanism; in the polar solvent with weak ionizing ability (i.e. DMSO), the reaction predominantly occurs via the faster mechanism of coupled electron and proton transfer.
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Original Russian Text © N.I. Belaya, A.V. Belyj, O.M. Zarechnaya, I.N. Scherbakov, V.M. Mikhalchuk, V.S. Doroshkevich, 2017, published in Zhurnal Obshchei Khimii, 2017, Vol. 87, No. 4, pp. 556–564.
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Belaya, N.I., Belyj, A.V., Zarechnaya, O.M. et al. The effect of the medium polarity on the mechanism of the reaction of hydroxybenzenes with hydrazyl radical in aprotic solvents. Russ J Gen Chem 87, 690–697 (2017). https://doi.org/10.1134/S1070363217040053
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DOI: https://doi.org/10.1134/S1070363217040053