PHOTOLYSES OF BIS(2-THIOPHENECARBONYL) AND BIS(3-THIOPHENECARBONYL) PEROXIDES IN BENZENE. PRODUCTION OF BIPHENYL FROM THE SOLVENT BENZENE CONTROLLED BY THE PHOTOLYSIS RATE

Article abstract of DOI:10.1246/cl.1983.867

Direct and sensitized photolyses of bis(2-thiophenecarbonyl) (2-TPO) and bis(3-thiophenecarbonyl) peroxide (3-TPO) in benzene afforded biphenyl derived solely from the solvent among the products.The yield of biphenyl depended upon the rate with which the radical intermediates were generated from the peroxides in sufficiently high concentrations to dimerize.