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用负载型稀土催化剂 ,在无水乙醇介质中 ,用浓硝酸硝化水杨酸 ,使 5 -硝基水杨酸的产率提高到了 80 %以上 ,同时考察了反应温度、反应时间对产率的影响 ,获得了反应的最佳条件
With supported rare earth catalyst, nitration of salicylic acid with concentrated nitric acid in anhydrous ethanol medium increased the yield of 5 - nitrosalicylic acid to over 80%. The effects of reaction temperature and reaction time on the yield Influence, get the best response conditions