Conclusions
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1.
The effect of natural polyhydroxynaphthoquinones on the low-temperature oxidation of cumene was investigated. These compounds constitute a new class of antioxidants, the rate constants of which for reaction with the peroxy radical are comparable to or greater than that for 2,6-di-tert-butyl-4-methylphenol.
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2.
2,3,5,7,8-Pentahydroxy-6-ethylnaphthalene-1,4-dione is the most effective of the investigated antioxidants.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1471–1476, July, 1985.
The authors thank V. A. Roginskii and V. A. Belyakov for their valuable advice in the discussion of the material in this paper.
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Boguslavskaya, L.V., Khrapova, N.G. & Maksimov, O.B. Polyhydroxynaphthoquinones — a new class of natural antioxidants. Russ Chem Bull 34, 1345–1350 (1985). https://doi.org/10.1007/BF00950127
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DOI: https://doi.org/10.1007/BF00950127