Z. Hong-yan
2004
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Journal
Journal of Tianjin Normal University
Abstract
4-Nitropyridine-N-oxide was synthesized with pyridine as original reactant through N-oxidation and nitration reactions, by using water as medium, tungstic acid and sulfuric acid as catalysts. The results showed that the synthetic method not only decreased the cost as well as the environment pollution, but also obtained higher yield of 96.2% pyridine-N-oxide and 90% 4-nitropyridine-N-oxide. Furthermore, the synthetic method was proved by characterizing 4-nitropyridine-N-oxide with MS,IR, ~1HNMR and(~(13)CNMR.)