Progress on the Treatment Method of Sulfur Monochloride in the Preparation Process of O,O-Dialkyl Thiophosphoryl Chloride
O,O-Dialkyl phosphorochloridothioate is an important pesticide intermediate and a raw material for the preparation of a variety of high-efficiency and low-toxic organophosphorus pesticides.The synthesis of O,O-dialkylthionophosphoric acid chlorides using phosphorus pentasulfide as raw material is a current research hot spot.The treatment methods of sulfur monochloride in the process of synthesizing alkyl monochloride using phosphorus pentasulfide as raw material were reviewed,and the advantages and disadvantages of various methods were analyzed.