2,4-二氯-3,5-二硝基三氟甲苯的制备

Preparation of 2,4-dichloro-3,5-dinitrotrifluorotoluene

2,4-二氯三氟甲苯与98%浓硫酸、95%浓硝酸、丙酸酐80℃下反应得到2,4-二氯-3,5-二硝基三氟甲苯,收率90%。该路线具有操作简单、收率高、原材料易得、溶剂和废酸可回收套用、环境友好等优点。

2,4-dichlorotrifluorotoluene reacts with 98% concentrated sulfuric acid,95% concentrated nitric acid and propionic anhydride at 80℃ to obtain 2,4-dichloro3-3,5-dinitrotrifluorotoluene.The yield is 90%.The route has the advantages of simple operation,high yield,easy access to raw materials,solvent and waste acid can be recycled,environment-friendly and so on.