Hydroperoxyl (HOO.) and alkylperoxyl (ROO.) radicals show a different behavior in H-atom-transfer processes. Both radicals react with an analogue of -tocopherol (TOH), but HOO., unlike ROO., is able to regenerate TOH by a fast H-atom transfer: TO.+(HOOTOH)-T-.+O-2. The kinetic solvent effect on the H-atom transfer from TOH to HOO. is much stronger than that observed for ROO. because noncovalent interactions with polar solvents (SolvHOO(.)) destabilize the transition state.
Hydroperoxyl Radicals (HOO center dot): VitaminE Regeneration and H-Bond Effects on the Hydrogen Atom Transfer
Baschieri Andrea;
2016
Abstract
Hydroperoxyl (HOO.) and alkylperoxyl (ROO.) radicals show a different behavior in H-atom-transfer processes. Both radicals react with an analogue of -tocopherol (TOH), but HOO., unlike ROO., is able to regenerate TOH by a fast H-atom transfer: TO.+(HOOTOH)-T-.+O-2. The kinetic solvent effect on the H-atom transfer from TOH to HOO. is much stronger than that observed for ROO. because noncovalent interactions with polar solvents (SolvHOO(.)) destabilize the transition state.File in questo prodotto:
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18_Chem. Eur. J. 2016, 22, 16441 – 16445.pdf
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