Electrochemical method for synthesizing benzoxazine by thiocyanation

The invention discloses an electrochemical method for synthesizing benzoxazine by thiocyanation, which comprises the following steps: adding raw materials of enaminone compounds, ammonium thiocyanate, trifluoroacetic acid and acetonitrile into a reaction bottle, and stirring for 1-10 hours at room temperature by using graphite as a positive electrode and platinum as a negative electrode under the conditions that the current is 10mA and the rotating speed is 400-1200rpm. And after the reaction is finished, concentrating the reaction liquid, and performing column chromatography separation to obtain a target product. The invention provides an electrochemical method for synthesizing benzoxazine by thiocyanation, the whole reaction successfully avoids the use of an equivalent oxidant, the raw materials required by the reaction are easy to obtain, the operation is simple and convenient, the application range is wide, and the method is environment-friendly. The reaction product can be used for further synthesis of s