Abstract
The oxidation of a series
of 4,4'-alkylidenebis(2,6-di-t-butylphenols) having increasing substitution of
the central methylene carbon by alkyl groups is examined. In the
monosubstituted compounds the stability of the monophenoxy radical increases
with increase in the size of the substituent, while the stability of the galvinoxyl type radical decreases. β-Coupled products
are only obtained from the ethylidene bisphenol, a result that can be
correlated with e.s.r. hyperfine splitting constants. With increasing mono- or di-substitution bisspiroperoxides become the preferred
oxidation products. The e.s.r. spectrum of an ethylenebisgalvinoxyl
biradical is described.
Cited by
12 articles.
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