Selective nitration of phenols with sodium nitrate was carried out in the presence of acidic ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate at room temperature in good to high yields and short reaction times. The use of inexpensive and relatively non toxic acidic reagent is an advantage of this method.

中文翻译：

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在酸性条件下使用酸性离子液体1-丁基-3-甲基咪唑硫酸氢盐进行酚的选择性硝化

在酸性离子液体1-丁基-3-甲基咪唑鎓硫酸氢盐存在下，在室温下以硝酸钠对苯酚进行选择性硝化，产率高，反应时间短。使用便宜且相对无毒的酸性试剂是该方法的优点。