Structure of photo-adduct between 1,2-naphthoquinone and xanthene

Photochemical reaction between 1,2-naphthoquinone and xanthene was studied. By a smooth reaction photo-adduct is produced as white needles after irradiation for several hours. Structure of the photo-adduct was determined as (7) through the investigation by PMR, IR, Mass, and elemental analysis. The photo-adduct between the o-quinone and the hydrogen donor having such a type of structure have never been reported so far. This reaction was examined from the dynamical point of view using CIDNP technique and the results substantiated further the structure (7).

TakuwaAkio

Papers

Structure of photo-adduct between 1,2-naphthoquinone and xanthene