Kinetic and redox characteristics of phenoxyl radicals of eugenol and isoeugenol: A pulse radiolysis study

The phenoxyl radicals of eugenol (EgOH) and isoeugenol (iEgOH) were generated by the specific one-electron oxidant N3· using pulse radiolysis technique, and were characterized by their absorption spectra, decay and formation kinetics, and one-electron reduction potential (E71) values. Reactivities of eugenol phenoxyl radical with the biologically important molecule, trolox C (analogue of vitamin E, α-tocopheral), were determined. Reactions of OH with these phenols were studied at different pHs and suitable mechanisms for these reactions were suggested. Scavenging abilities of the phenols toward highly damaging Br·, NO2·, and CCl3O2· radicals were evaluated. © 2000 John Wiley & Sons, Inc. Int J Chem Kinet 32: 17–23, 2000