A probe for homolytic reactions in solution. Part III. Radicals by hydrogen abstraction

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Abstract
A number of free-radical reactions have been examined by recording the e.s.r. spectra of nitroxides which are formed when the reactions are carried out in the presence of 2-methyl-2-nitrosopropane. Examples are presented in which the nitroso-compound scavenges either primary radicals from the decomposition of various initiators, or secondary radicals produced by hydrogen abstraction from a component of the solvent. In the majority of cases the identity of the scavenged radical is at once evident from the e.s.r. spectrum obtained. The general utility of this technique, including its possible application to quantitative studies, is discussed.

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