Preparation method of 1-ethoxy-2-fluoroethylene carbonate

The invention belongs to the technical field of synthesis of halogenated ethylene carbonate, and particularly relates to a preparation method of 1-ethoxy-2-fluoroethylene carbonate, which comprises the following steps: reacting fluoroethylene carbonate with chlorine under ultraviolet irradiation to generate 1-chloro-2-fluoroethylene carbonate; and carrying out a reaction on the 1-chloro-2-fluoroethylene carbonate and a metal ethoxide salt, so as to obtain the 1-ethoxy-2-fluoroethylene carbonate. According to the present invention, the high-purity 1-ethoxy-2-fluoroethylene carbonate can be prepared, the high-purity 1-ethoxy-2-fluoroethylene carbonate can be adopted as the intermediate for synthesizing the difluoroethylene carbonate, the new synthesis route is provided for the difluoroethylene carbonate, and the preparation method has characteristics of simple operation and mild reaction condition, and is suitable for large-scale industrial production. 本发明属于卤代碳酸乙烯酯的合成技术领域，具体涉及一种1-乙氧基-2-氟代碳酸乙烯酯的制备方法，包括：将氟代碳酸乙烯酯和