Abstract

Acenaphthenone (ANO) is an effective electron donor and undergoes stepwise photooxygenation sensitized by 9,10-dicyanoanthracene, affording hydroxylactone and anhydride derivatives; the electron transfer mechanism via an enol intermediacy was verified by the enhancement effect of biphenyl, fluorescence quenching, exciplex emission and chemically induced dynamic nuclear polarization (CIDNP).

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