Conclusions
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1.
Electrophilic substituents promote, and electron-donor substituents inhibit, phenoxyl radical reactions with 4-bromo-4-methyl-2, 6-di-tert-butyl-2, 5-cyclohexadienone (R2Br); reaction clearly proceeds through the formation of intermediate donor-acceptor radical-R2Br complexes.
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2.
Analysis of the kinetic data suggests dimerization of quinobromides, a supposition supported by IR spectroscopy and the results of molecular weight determinations.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1522–1525, July, 1977.
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Malysheva, N.A., Prokof'ev, A.I., Bubnov, N.N. et al. Reactions of stable phenoxyl radicals with 4-bromo-4-methyl-2,6-di-tert-butyl-2,5-cyclohexadienone. Russ Chem Bull 26, 1398–1400 (1977). https://doi.org/10.1007/BF00928513
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DOI: https://doi.org/10.1007/BF00928513