Preparation method of cyclobutanone

The invention relates to the technical field of organic synthesis, in particular to a preparation method of cyclobutanone. The preparation method comprises the following steps: generating dichlorovinyl ketone from trichloroacetyl chloride under the actions of zinc powder and phosphorus oxychloride; carrying out cycloaddition reaction on dichloroethylene ketone and acetylene to generate dichlorocyclobutenone; under the action of a catalyst, performing hydrogenation reaction on dichlorocyclobutenone to obtain cyclobutanone. The preparation method of cyclobutanone has the advantages of cheap andeasily available reaction raw materials, simple reaction steps, high yield and good industrial prospect. 本发明涉及有机合成技术领域，具体涉及一种环丁酮的制备方法，包括如下步骤：三氯乙酰氯在锌粉、三氯氧磷作用下，生成二氯乙烯酮；二氯乙烯酮与乙炔发生环加成反应，生成二氯环丁烯酮；在催化剂作用下，二氯环丁烯酮进行氢化反应得到环丁酮。本发明提供的环丁酮的制备方法反应原料价廉易得，反应步骤简单，收率较高，具有良好的工业化前景。