A novel process for preparing polychlorobenzamide derivatives, useful as biocidal agents, flame retardants in plastic resins, and the like, from corresponding polychlorobenzonitrile compound in near quantitative yields is disclosed. A polychlorobenzonitrile compound is admixed and reacted with excess sulfuric acid at an elevated temperature e.g. 100.degree. to 160.degree. C for a time period sufficient to hydrolyze the polychlorobenzonitrile derivative to the corresponding polychlorobenzamide derivative. The reaction product is then recovered to provide the corresponding polychlorobenzamide derivative in an excellent yield above about 90%.
本发明揭示了一种新颖的制备多
氯苯甲酰胺衍
生物的方法,该衍
生物可用作
生物杀菌剂、塑料
树脂中的阻燃剂等。该方法从相应的多
氯苯腈化合物中以近乎定量的产率制备出多
氯苯甲酰胺衍
生物。将多
氯苯腈化合物与过量的
硫酸混合并在高温下反应,例如100℃至160℃,反应时间足够使多
氯苯腈衍
生物水解为相应的多
氯苯甲酰胺衍
生物。然后回收反应产物,以提供大约90%以上的优良产率的相应多
氯苯甲酰胺衍
生物。