Reactions of unsubstituted hydroxybenzenes with 2,2-diphenyl-1-picrylhydrazyl in the system water-aprotic solvent

The reactivity of natural unsubstituted di- and trihydroxybenzenes in the reaction with a stable free radical 2,2-diphenyl-1-picrylhydrazyl in a mixed solvent water-dimethyl sulfoxide (2:1) was investigated. Kinetic and stoichiometric parameters of the studied reaction were estimated. In the water e...

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Bibliographic Details
Published in:Russian journal of general chemistry 2012-05, Vol.82 (5), p.880-884
Main Authors: Belaya, N. I., Belyi, A. V., Paschenko, A. I.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
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Summary:The reactivity of natural unsubstituted di- and trihydroxybenzenes in the reaction with a stable free radical 2,2-diphenyl-1-picrylhydrazyl in a mixed solvent water-dimethyl sulfoxide (2:1) was investigated. Kinetic and stoichiometric parameters of the studied reaction were estimated. In the water environment the studied hydroxybenzenes were found to dissociate to form ions, which reacted rapidly with the radical by the mechanism of single electron transfer with subsequent adding a proton. The corresponding rate constants were calculated taking into account the concentration of the ionized form of phenol.
ISSN:1070-3632
1608-3350
DOI:10.1134/S1070363212050131