Process for making 2,5-dihalogenated phenol

The present invention relates to a process for reacting chemical compounds. The method includes the step of reacting a compound of formula (IV) in which Hal is independently selected from CI or Br, and X'' is a monovalent anion, in the presence of an inorganic acid with the concentration of the aqueous inorganic acid being at least about 60%, at a temperature of about 140 DEG C to about 250 DEG C, to obtain a compound of formula (V) in which Hal is as defined above. 本发明涉及种用于使化合物反应的方法，其包括如下步骤：使其中Hal独立地选自Cl或Br并且X为价阴离子的式(IV)化合物在约140℃至约250℃的温度下在其中无机酸水溶液具有至少约60％浓度的无机酸存在下反应以得到其中Hal如上所定义的式(V)化合物。