Journal of the Chemical Society. Perkin transactions II p. 209 - 212 (1984)
Update date:2022-08-04
Topics:
Hemmens, Violet J.
Moore, Douglas E.
Irradiation of oxygenated aqueous solutions of 6-mercaptopurine with near-u.v. light leads to purine-6-sulphinate as primary product.The sulphinate is itself unstable to u.v. light and is further oxidized to purine-6-sulphonate.Hypoxanthine is a minor product (<10percent) of direct photolysis, but also arises from degradation of the sulphonate.Sensitized photo-oxidation using dyes (Methylene Blue, Rose Bengal, or Rhodamine B) gives the same products, and reaction in D2O occurs at a greater rate, indicating that the primary photoreaction occurs via addition of singlet molecular oxygen.
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