Vitamin E and related ether-phenols: A low-temperature dielectric relaxation study

Within a classs of phenols comprising durenols and methylated chromenols, chromanols and coumaranols, hydrogen-abstraction rate constants, and therefore radical-scavenging and antioxidant effectiveness are closely paralleled by low-temperature relaxation rates, and are apparently influenced in similar proportions by the inductive and resonance effects of para-alkoxy groups. Relaxation rates of 2,3,5,6-tetrachlorophenol and 2,6-di-tertiary-butyl phenol with and without 4-methoxy substituents are also reported and discussed. \ua9 1985.Peer reviewed: YesNRC publication: Ye