Literature DB >> 27709712

Hydroperoxyl Radicals (HOO. ): Vitamin E Regeneration and H-Bond Effects on the Hydrogen Atom Transfer.

Jakub Cedrowski1, Grzegorz Litwinienko2, Andrea Baschieri3, Riccardo Amorati4.   

Abstract

Hydroperoxyl (HOO. ) and alkylperoxyl (ROO. ) radicals show a different behavior in H-atom-transfer processes. Both radicals react with an analogue of α-tocopherol (TOH), but HOO. , unlike ROO. , is able to regenerate TOH by a fast H-atom transfer: TO. +HOO. →TOH+O2 . 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 (Solv⋅⋅⋅HOO. ) destabilize the transition state.
© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

Entities:  

Keywords:  hydrogen atom transfer; hydroperoxyl radicals; reactive oxygen species; solvent effects; tocopherol

Year:  2016        PMID： 27709712     DOI： 10.1002/chem.201603722

Source DB:  PubMed          Journal:  Chemistry        ISSN： 0947-6539            Impact factor:   5.236


  3 in total

1.  Phenolic Hydrogen Transfer by Molecular Oxygen and Hydroperoxyl Radicals. Insights into the Mechanism of the Anthraquinone Process.

Authors:  Hans-Gert Korth; Peter Mulder
Journal:  J Org Chem       Date:  2020-01-23       Impact factor: 4.354

2.  Inhibition of hydrocarbon autoxidation by nitroxide-catalyzed cross-dismutation of hydroperoxyl and alkylperoxyl radicals.

Authors:  Kareem A Harrison; Evan A Haidasz; Markus Griesser; Derek A Pratt
Journal:  Chem Sci       Date:  2018-06-11       Impact factor: 9.825

3.  Effect of Antioxidants on High-Temperature Stability of Renewable Bio-Oils Revealed by an Innovative Method for the Determination of Kinetic Parameters of Oxidative Reactions.

Authors:  Fabio Mollica; Marco Lucarini; Cinzia Passerini; Claudio Carati; Silvia Pavoni; Lucia Bonoldi; Riccardo Amorati
Journal:  Antioxidants (Basel)       Date:  2020-05-08
  3 in total

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