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À propos de : Mechanistic Insight into the AromaticHydroxylation by High-Valent Iron(IV)-oxoPorphyrin π-Cation Radical Complexes        

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  • Mechanistic Insight into the AromaticHydroxylation by High-Valent Iron(IV)-oxoPorphyrin π-Cation Radical Complexes
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  • Mechanistic studies of the aromatic hydroxylation by high-valent iron(IV)-oxo porphyrin π-cation radicals revealed thatthe aromatic oxidation involves an initial electrophilic attackon the π-system of the aromatic ring to produce a tetrahedralradical or cationic σ-complex. The mechanism was proposedon the basis of experimental results such as a large negativeHammett ρ value and an inverse kinetic isotope effect. Bycarrying out isotope labeling studies, the oxygen in oxygenated products was found to derive from the iron-oxoporphyrin intermediates.
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