Norrish type I photoreaction in the presence of phenols; an intermolecular photo-Fries rearrangement
Abstract
Pinacolone photolysis in the presence of phenols leads to phenyl acetates and hydroxy acetophenones; Norrish type I cleavage and subsequent hydrogen abstraction from the phenol by the tert-butyl radical gives rise to acyl–aryloxy radical pairs which recombined constituting an intermolecular photo-Fries rearrangement.