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The hydroxylation of cycloalkanes at 25 C by the syringe pump addition of tert-alkyl hydroperoxides (10 and 1 equiv based on catalyst) to deoxygenated acetonitrile containing cycloalkanes (0.64 M) and 0.61 mM of the catalyst, FeIII2O(TPA)2(H2O)24+, is demonstrated to be a reaction which involves freely diffusing cycloalkyl radicals, i.e., free alkyl radicals.
MacFaul et al. (Sat,) studied this question.