2-アミノー1,4-ナフトキノンの水中における光化学反応

The photochemical reaction of 2-amino-1, 4-naphthoquinone in water was investigated by using the light of wavelength 254 nm. As a product, 2-amino-3-hydroxy-1, 4-naphthoquinone was obtained, but 2-amino-1, 4-naphalenediol, a reduction product of 2-amino-1, 4-naphthoquinone, was not obtained.This phtochemical reaction seems to proceed by the nucleophilic addition of OH- anion from water to the quinone in a 7r-e excited state (Scheme 4).