Global and local reactivity indices for electrophilic/nucleophilic free radicals

Luis R. Domingo, Patricia Pérez

Resultado de la investigación: Article

63 Citas (Scopus)

Resumen

A set of five DFT reactivity indices, namely, the global electrophilicity ω° and nucleophilicity N° indices, the radical Parr function P°k, and the local electrophilicity ω°k and nucleophilicity N°k indices, for the study of free radicals (FRs) are proposed. Global indices have been tested for a series of 32 FRs having electrophilic and/or nucleophilic activations. As expected, no correlation between the proposed global electrophilicity ω° and global nucleophilicity N° has been found. Analysis of the local electrophilicity ω°k and nucleophilicity N°k indices for FRs, together with analysis of the local electrophilicity ωk and nucleophilicity Nk indices for alkenes, allows for an explanation of the regio- and chemoselectivity in radical additions of FRs to alkenes. Finally, an ELF bonding analysis for the C-C bond formation along the nucleophilic addition of 2-hydroxyprop-2-yl FR 28 to methyl acrylate 35 evidences that the new C-C bond is formed by C-to-C coupling of two radical centres, which are properly characterized through the use of the Parr functions.

Idioma originalEnglish
Páginas (desde-hasta)4350-4358
Número de páginas9
PublicaciónOrganic and Biomolecular Chemistry
Volumen11
N.º26
DOI
EstadoPublished - 14 jul 2013

Huella dactilar

free radicals
Free Radicals
reactivity
Alkenes
alkenes
Regioselectivity
Discrete Fourier transforms
acrylates
Chemical activation
activation

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry

Citar esto

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abstract = "A set of five DFT reactivity indices, namely, the global electrophilicity ω° and nucleophilicity N° indices, the radical Parr function P°k, and the local electrophilicity ω°k and nucleophilicity N°k indices, for the study of free radicals (FRs) are proposed. Global indices have been tested for a series of 32 FRs having electrophilic and/or nucleophilic activations. As expected, no correlation between the proposed global electrophilicity ω° and global nucleophilicity N° has been found. Analysis of the local electrophilicity ω°k and nucleophilicity N°k indices for FRs, together with analysis of the local electrophilicity ωk and nucleophilicity Nk indices for alkenes, allows for an explanation of the regio- and chemoselectivity in radical additions of FRs to alkenes. Finally, an ELF bonding analysis for the C-C bond formation along the nucleophilic addition of 2-hydroxyprop-2-yl FR 28 to methyl acrylate 35 evidences that the new C-C bond is formed by C-to-C coupling of two radical centres, which are properly characterized through the use of the Parr functions.",
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Global and local reactivity indices for electrophilic/nucleophilic free radicals. / Domingo, Luis R.; Pérez, Patricia.

En: Organic and Biomolecular Chemistry, Vol. 11, N.º 26, 14.07.2013, p. 4350-4358.

Resultado de la investigación: Article

TY - JOUR

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AU - Pérez, Patricia

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