A Novel Role of Methanol in In-Cage Reaction of Radical Cations During Photosensitized C-C Bond Cleavage of 1,1,2,2-Tetraphenylethane

Article abstract of DOI:10.1246/cl.1992.743

The C-C bond cleavage in the photosensitized one-electron oxidation of 1,1,2,2-tetraphenylethane in MeCN was significantly reduced by the addition of MeOH.A laser flash study revealed that protic solvents suppressed the formation of dissociated cation radicals but not that of sensitizer anions.A novel synergistic oxidation of solvent methanol with ion pairs is suggested.