Bull. Russ. Acad. Sci. Div. Chem. Sci. (Engl. Transl.) p. 329 - 332 (1992)
Update date:2022-09-26
Topics:
Kasaikina, O. T.
Kartasheva, Z. S.
Mazaletskii, A. B.
Sakova, N. Yu.
Shmyreva, Zh. V.
Shikaliev, Kh. S.
Phenols (hydroquinone and α-tocopherol) and heterocyclic aminophenols (2,2,4-trimethyl-6-ethoxy-1,2-dihydroquinoline) reduce N,N'-diphenyl-p-quinonediimine (A) to the diamine.With difunctional hydrogen atom donors, the reaction rate is proportional to the concentrations of the reactants.The effective rate constants have been determined over a range of temperatures.In the reaction of A with α-tocopherol, plots of rate versus initial concentrations are nonlinear. 2,6-Di-tert-butyl-4-methylphenol and 2,2,4-trimethyl-6-ethoxy-1,2-dihydroquinoline do not react with A under the same conditions.Keywords: N,N'-diphenyl-p-quinonediimide, reduction kinetics, hydroquinone, 2,2,4-trimethyl-6-ethoxy-1,2-dihydroquinoline, 2,6-di-tert-butyl-4-methylphenol (ionol), α-tocopherol, oxidation potentials.
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