Preparation method of fluorinated acyl fluoride

The invention relates to a preparation method of fluoroacyl fluoride, which comprises the following steps: reacting halogenated olefin as shown in a formula I, oxygen and hydrogen fluoride under the action of a catalyst to generate fluoroacyl fluoride as shown in a formula II, and the catalyst is 3-difluoromethyl-1H-methylpyrazole-4-chromium formate. The preparation method of the fluoroacyl fluoride is wide in raw material source, simple in process, good in catalytic activity, safe and reliable in reaction, high in automation degree and suitable for industrial production. 本发明涉及一种氟代酰氟的制备方法，包括如式Ⅰ所示的卤代烯烃、氧气和氟化氢在催化剂的作用下反应，生成如式Ⅱ所示的氟代酰氟，该催化剂为3-二氟甲基-1H-甲基吡唑-4-甲酸铬。本发明的氟代酰氟的制备方法原料来源广泛，工艺简洁，催化活性好，反应安全可靠，自动化程度高，适用工业化生产。