INVESTIGADORES
POSTIGO Jose Alberto
artículos
Título:
HOMOLYTIC AROMATIC RADICAL SUBSTITUTION OF ARENES WITH PERFLUOROALKYL GROUPS IN WATER
Autor/es:
A POSTIGO
Revista:
TRENDS IN PHOTOCHEMISTRY AND PHOTOBIOLOGY
Editorial:
RESEARCH TRENDS
Referencias:
Lugar: HAPPAUGE-NEW YORK-http://www.researchtrends.net/tia/title_issue.asp?id=15&in=0&vn=14&type=3; Año: 2012 vol. 14 p. 93 - 110
ISSN:
0972-4532
Resumen:
The substitution reaction of aromatic nuclei, such as N,N-dialkylated aromatic amines and methoxysubstituted arenes with perfluoroalkyl Rf groups was acomplished in water by a photoinduced method to yield the substitution products resulting from replacement of aromatic Hs with the Rf moiety in good yields (57-88%). Mechanistic aspects are discussed giving support for a photoinduced electron transfer substitution (PET) reaction. A radical chain mechanism superimposed with a redox process is proposed to account for product formation, as evidenced by the observation of the UV-vis transient spectra of the radical cation species generated from electron-rich aromatic compounds in the presence of perfluoroalkyl halides by Nanosecond Laser Flash Photolysis (NLFP) techniques.
