A method for preparing a 2,3,5,6-tetrahalo- or 2,3,4,5,6-pentahalophenylhydrazine which comprises reacting the corresponding 1-nitro compound with hydrazine hydrate in a polar solvent, provides the desired compounds in a single step process and in good yields.
一种制备 2,3,5,6- 四卤代或 2,3,4,5,6- 五卤代苯
肼的方法,包括在极性溶剂中使相应的 1-
硝基化合物与
水合
肼反应,该方法可一步制备出所需的化合物,且收率高。