Photochemical Oxygenation of Olefins by Heterocyclic N-Oxides : Mechanistic Characteristic in the Photochemistry of Pyrimido[5,4-g]pteridine-10-oxide.

A novel heterocyclic N-oxide, pyrimido[5,4-g]pteridine-10-oxide, oxygenates cyclohexene and norbornene under the photochemical conditions to give the corresponding oxidation products. Experimental results clearly indicate that the photochemical oxygenation involves a single-electron transfer