Ozonolysis of Diphenylvinylene Carbonate. Synthesis and Thermolysis of Dibenzoyl Monoperoxycarbonate

Article abstract of DOI:10.1021/jo01294a027

Dibenzoyl monoperoxycarbonate (2) was prepared by the reaction of diphenylvinylene carbonate (1) with ozone.The thermolysis of 2 in benzene gives products typical of the formation of benzoyloxy radicals.The reaction rate was investigated at different temperatures, and the activation parameters were determined (ΔH^% = 27.8 +/- 1.2 kcal/mol, ΔS^% = 6.1 +/- 3.5 eu).The thermolysis of 2 in the presence of the stable free radical gavinoxyl was investigated also.These experiments revealed that the fraction of radical escape from the solvent cage is 60 +/- 5 percent.