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Syntheses and ESR spectra of radicals produced in the thermal decomposition of tetraarylsuccinonitriles

✍ Scribed by Jan Plaček; Ferenc Szőcs; Dietrich Braun; Thomas Skrzek

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
501 KB
Volume
195
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Tetraarylsuccinonitriles 2a–e were synthesized via oxidative dimerization of diarylacetonitriles 1a–e in basic media. The thermal decomposition of 2 results in two identical cyanodiarylmethyl radicals 3. Both ^1^H and ^13^C NMR analyses of 1a–e and 2a–e and ESR spectra of 3a–e are presented and discussed. The results of ESR measurements provide a plausible explanation for the different reactivity of cyanodiarylmethyl radicals 3a–e in free radical polymerization.

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