Conclusions
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1.
The reaction of shielded silicon-containing phenols (2-trimethylsilyl-4,6-di-tert-butylphenol and 2,6-bis(trimethylsilyl)-4-tert-butylphenol) with benzoyl peroxide in benzene at 80° leads to a dehydro-genation of the phenols with the formation of benzoic acid and phenoxyl radicals. The latter dimerize to give the corresponding disiloxybiphenyls.
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2.
The indicated phenols under the influence of benzoic acid form 2,4-disubstituted phenols, which react with a new molecule of the starting phenol to give the combined oxidation products, namely 2-hydroxy-2′-trimethylsiloxy-3,3′,5,5′-tetrasubstituted biphenyls.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 71–75, January, 1973.
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Khrzhanovskaya, I.L., Vasileiskaya, N.S. Reaction of shielded silicon-containing phenols with peroxides. Russ Chem Bull 22, 64–67 (1973). https://doi.org/10.1007/BF00854116
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DOI: https://doi.org/10.1007/BF00854116