Reactivity of 2,2-diphenyl-1,2-dihydro-4-ethoxyquinolin-1-yloxyl towards oxygen- and carbon-centred radicals

Abstract

2,2-Diphenyl-1,2-dihydro-4-ethoxyquinolin-1-yloxyl reacts efficiently with both carbon and oxygen centered (peroxyl, alkoxyl, hydroxyl) radicals leading to products which arise mainly from coupling of radicals with the N–O^· function or with the conjugated benzene ring. The reaction with superoxide radical is, however, not very effective, as predicted on the basis of the low reactivity of this radical in typical radical reactions.