Some new aspects in the chemistry of halogenated oxyl and peroxyl radicals

Some characteristic features concerning the chemical properties of halogenated aliphatic oxyl and peroxyl radicals are presented and discussed. This includes, in particular, overall two-electron oxidation initiated by peroxyl radicals, and fragmentation and rearrangement reactions of oxyl radicals. A specific example elaborated in detail deals with the CF3CHClOO·-induced oxidation of methionine. A complete mechanism and material balance is proposed on the basis of quantitative analysis of the products of this reaction. These are: F-, Cl-, Br-, CF3CHO, CF3CO2-, CO2 and methioninesulfoxide