Antioxidants and stabilizers.XLII. Reaction of tert‐butyl hydroperoxide with mononuclear and binuclear phenols

Abstract

The effect of the structure of alkylphenols and methylene‐bisphenol on the course of decomposition of tert‐butyl hydro‐peroxide has been investigated. All phenols under investigation have been found to accelerate the decomposition to a varying degree. During the reaction, the phenols undergo oxidative transformation, resulting in the formation of oligomers as a methyl or ethyl group is substituted for phenols at the position para to the hydroxyl group. All types of phenols yield decomposition products which have a lower molecular weight than the initial phenol and are strongly absorbant in the UV region. Time dependences of the formation of tert‐butyl alcohol, isobutylene, and acetone have been tabulated. From the data measured, stoichiometric ratios q of the reaction of tert‐butyl peroxide with phenols and costants, expressing the rate of the loss of tert‐butyl hydroperoxide, have been calculated.

PADMA-28, a traditional tibetan herbal preparation inhibits the respiratory burst in human neutrophils, the killing of epithelial cells by mixtures of oxidants and pro-inflammatory agonists and peroxidation of lipids

“…1-methylnaphthalene (Sogawa and Nihro, 1993, Marvrov and Gonchanernco, 1998, Asamarai and Addis, 1996, Zikmund and Brodilova, 1973.…”