DECOMPOSITION DU PEROXYDE DE BENZOYLE DANS DES MELANGES CARBOMETHOXY-4 PYRIDINE/BENZENE

Article abstract of DOI:10.1016/S0040-4020(01)90100-0

The decomposition kinetics of benzoyl peroxide in 4-carbomethoxy-pyridine and in 4-carbomethoxy-pyridine/benzene have been studied in the presence and absence of inhibitor.The rate constant for the radical induced decomposition of benzoyl peroxide was 2.6E-4 l/mol*s in 4-carbomethoxy-pyridine, and in benzene it was 9.2E-6 l/mol*s, a thirty fold decrease.A mechanism including the attack at the nitrogen atom of the pyridine ring by the phenyl radical and the oxidation of the sigma-complex by the 1-phenyl-4-carbomethoxy pyridinium ion has been proposed.The system of the differential equations obtained from the proposed mechanism has been numerically solved.