Abstract
Half-wave potentials of the one-electron electrochemical oxidation (E 1/2 ox) of hydroquinolines with different degrees of heterocycle hydrogenization as well as containing substituents of various natures in the benzene ring and heterocycle have been measured. Linear correlations betweenE 1/2 ox and the values of the Hammett polar σ-constants form- andp-substituents in dihydroquinolines and related sulfur-containing dithiolthiones were established. The character of the variation ofE 1/2 ox in the series of hydroquinolines was found to correlate with the characteristic features of the inhibiting action of these compounds in the liquid-phase oxidation of various hydrocarbons. However, in contrast to phenolic antioxidants for hydroquinolines, there is no dependence of the retardation period onE 1/2 oxin the oxidation of hydrocarbons at temperatures higher than 100 °C.
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 610–613, April, 1994.
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Kasaikina, O.T., Mazaletskii, A.B. & Vinogradova, V.G. Redox properties of hydrogenated quinoline derivatives — inhibitors in oxidation processes of hydrocarbons. Russ Chem Bull 43, 559–562 (1994). https://doi.org/10.1007/BF00699823
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DOI: https://doi.org/10.1007/BF00699823