49758-03-4Relevant academic research and scientific papers
Reactions with Stable Phenoxyl Radicals
Jonge, Cornelis R.H.I. de
, p. 299 - 304 (2007/10/02)
Hydrogen abstraction from activated methyl, methylene, and methine compounds with 4-methoxy-2,6-diphenylphenoxyl proved to be a useful approach for the synthesis of the corresponding ethers of 4-methoxy-2,6-diphenylphenol.With triple activated methine com
Antioxidative properties of phenyl-substituted phenols. Part I. The mechanism of synergism between 4-alkoxy-2,6-diphenylphenols and ββ′-disubstituted diethyl sulphides
De Jonge, Cornelis R. H. I.,Hageman, Hendrik J.,Huysmans, Willem G. B.,Mijs, Willem J.
, p. 1276 - 1279 (2007/10/06)
A pronounced synergism between 4-alkoxy-2,6-diphenylphenols and ββ′-disubstituted diethyl sulphides has been observed in the inhibition of autoxidation of polypropene at 180°C. The mechanism of this synergistic action (at temperatures ≥150°C) has been investigated. N.m.r. model experiments have shown that the phenolic antioxidant (AH) is regenerated continuously from the phenoxyl radical (A·) by hydrogen atom donation by the sulphenic acid, a product originating from the ββ′- disubstituted diethyl sulphide. This observation is of possible contributory importance to the understanding of the mechanism of synergistic effects.
