When phenothiazine and phenoxazine were ozonized in dichloromethane, the cation radicals and the ozonate anion radical were detected, whereas, in the ozonization of phenoxathiin and thianthrene, these radicals were not observed. Formation of these radicals was more favorable as greater was the polarity of the solvent and lower was the oxidation potential of the substrate. Ozonization of phenothiazine and phenoxazine in polar solvents ...
