Journal of Organic Chemistry p. 4835 - 4838 (1980)
Update date:2022-08-16
Topics:
Izawa, Yasuji
Tomioka, Hideo
Natsume, Masashi
Beppu, Shinji
Tsujii, Hideo
Irradiation of α,α,α-trichloroacetophenone (1a) in methanol afforded alcoholysis products methyl benzoate (2; X=H, R=Me) and methyl benzoylformate (3; X=H, R=Me) along with dichloroacetophenone.Formation of 2 was greatly favored in the presence of oxygen, whereas that of 3 was favored by the sensitization.Quenching studies showed that both alcoholysis products are derived from different excited triplet states.Reaction mechanisms involving the exciplex between 1 and oxygen are discussed.
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