Electron spin resonance studies. Part XXIV. Reactions of the radicals ·CO2H and ·CO2– with oximes and nitroalkanes

Abstract

Evidence has been obtained from e.s.r. studies for the ready addition of the radicals ·CO₂H and ·CO₂^– to the CN bond of oximes and of the latter radical to the CN bond of the aci-anions from some nitroalkanes. One-electron reduction of the nitroalkanes themselves by either ·CO₂H or ·CO₂^– is followed by processes which lead to the corresponding alkylcarboxynitroxide radicals, but in a sufficiently acidic medium the spectrum of the protonated nitroalkane radical anion can also be observed. The e.s.r. parameters for all the radicals detected are described.