| 摘要 |
The novel hetarene-fused or benzo-fused 1,2,3-triazin-4-one 2-N-oxides can be prepared by reacting o-aminonitriles of aromatic nitrogen heterocycles or substituted benzenes with nitrating agents in acidic medium at a temperature from -20 to +100 DEG C. Suitable nitrating agents are, for example, nitric acid, inorganic nitrates, alkyl nitrates, acetyl nitrate, benzoyl nitrate and N2O5. The acids employed as the acid medium are, for example, sulphuric acid, alkylsulphonic acids, arylsulphonic acids, hydrofluoric acid and trifluoroacetic acid or mixtures thereof.
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