title: Incorporation of ring nitrogens into diphenylamine antioxidants: striking a balance between reactivity and stability.
abstract: The incorporation of nitrogen atoms into the aryl rings of conventional diphenylamine antioxidants enables the preparation of readily accessible, air-stable analogues, several of which have temperature-independent radical-trapping activities up to 200-fold greater than those of typical commercial diphenylamines. Amazingly, the nitrogen atoms raise the oxidation potentials of the amines without greatly changing their radical-trapping (H-atom transfer) reactivity.
authors.affiliation: Department of Chemistry, Queen's University, Kingston, Ontario, Canada.
authors.forename: Jason J
authors.initials: JJ
authors.lastname: Hanthorn
authors.forename: Luca
authors.initials: L
authors.lastname: Valgimigli
authors.forename: Derek A
authors.initials: DA
authors.lastname: Pratt