Electrochemical synthesis method of 2-substituted benzothiazole compound

The invention provides an electrochemical synthesis method of a 2-substituted benzothiazole compound. The method comprises the following steps of: (1) adding an electrolyte, a manganese salt catalyst,an electrolytic solvent, a benzyl ether compound and o-aminothiophenol into a diaphragm-free electrolytic tank, inserting an anode and a cathode, and carrying out electrochemical reaction under stirring, electrifying and constant-current conditions; and (2) after the reaction is finished, extracting the reacted solution, and performing separation and purification to obtain the 2-substituted benzothiazole compound. According to the invention, in a diaphragm-free single-chamber electrolytic tank, the benzyl ether compound and o-aminothiophenol are used as the raw materials to acquire the 2-substituted benzothiazole compound under the conditions of normal temperature, normal pressure and constant current; wherein the manganese salt is low in price, a peroxidant does not need to be additionally added in the synthesis