Photoinduced electron transfer by charge-transfer and singlet-sensitized activation. Facile retro-pinacol via fragmentation of cation radicals

Abstract

Direct comparison of the efficiency of photoinduced electron transfer by charge-transfer activation of electron donor–acceptor (EDA) complexes and diffusional quenching of excited singlet acceptors is allowed by a series of silylated pinacols derived from the p-methoxytoluene donor.