Electron spin resonance studies. Part 63. Selective radical oxidation by titanium(IV) complexes

Abstract

Evidence is presented that, when complexed with edta in acid solution, titanium(IV) is an effective oxidant for radicals in which tervalent carbon is bonded to a substituent of +M type. A lower limit for k(Ti^IV–edta +·CHMeOH) is estimated as ca. 10⁸ dm³ mol^–1 s^–1. When the organic radicals are generated from the Ti^III–RO₂H couple (R = H or alkyl), a chain reaction operates; but stoicheiometric studies show that the chains are relatively short.