Chemistry of Heterocyclic Compounds p. 1243 - 1246 (1987)
Update date:2022-08-02
Topics:
Kuz'menko, V. V.
Pozharskii, A. F.
Chernyshev, A. I.
Nanavyan, I. M.
7-Aminotheophylline reacts with acetone and acetophenone in the presence of anhydrous zinc chloride, forming 1,3,6,8-tetramethyl- and 6,8-dimethyl-1,3-diphenylpyrido<6,1-f>xanthines, respectively. 9-Aminotheophylline gives an analogous reaction product wi
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