Chemical behavior of oxygen-radical: quenching process of cumyloxyl radical by nicotinamide derivatives

Citation
M. Sugita et al., Chemical behavior of oxygen-radical: quenching process of cumyloxyl radical by nicotinamide derivatives, J PHOTOCH A, 143(2-3), 2001, pp. 141-145
Citations number
23
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
ISSN journal
1010-6030 → ACNP
Volume
143
Issue
2-3
Year of publication
2001
Pages
141 - 145
Database
ISI
SICI code
1010-6030(20011010)143:2-3<141:CBOOQP>2.0.ZU;2-O
Abstract
The chemical behavior of the cumyloxyl radical was studied by nanosecond la ser flash photolysis of dicumylperoxide. By using nicotinamide derivatives as model compounds of Nicaraven, the quenching of the cumyloxyl radical was examined. Pyridine, formamides, acetoamides, benzamides, 2-propanol, n-but ylamine were also used as quenchers. The rate constants of the reactions of the cumyloxyl radical with the quenchers were determined. The quenching ra te constants for the nicotinamides were dependent on the alkylamide group p resumed by hydrogen abstraction by cumyloxyl radical and the alkylamide gro up of the nicotinamides was concluded to be the key functional group for th e quenching of the cumyloxyl radical. (C) 2001 Elsevier Science B.V. All ri ghts reserved.