Electron spin resonance studies of elementary processes in radiation- and photo-chemistry. Part 13.—Radiolysis of solutions containing maleamic acids and maleimides

Abstract

The radical anions, OH, and H adducts of some maleamates and maleimides have been characterised by the “in situ” radiolysis–e.s.r. method. The maleimide radical anions could also be formed by electron transfer from (CH3)2COH and CO[graphic omitted], whereas the maleamate radical anions could only be produced by electron transfer from the stronger reducing agent (CH3)2CO[graphic omitted]. Furthermore, the maleamate radical anions are thought to have cyclic structures with an amidic proton “bonded” across to the carboxyl group since this proton did not dissociate or undergo fast exchange with the solvent even at pH 13.7.