Method for synthesizing 4,5-difluoro-2,2-di(perfluoro substituent)-1,3-dioxole compounds

The invention discloses a method for synthesizing 4,5-difluoro-2,2-di(perfluoro substituent)-1,3-dioxole compounds. The method specifically comprises the steps of: conducting a dehalogenation reactionon 4,4,5,5-tetrachloro-2,2-di(perfluoro substituent)-1,3-dioxolane compounds to obtain 4,5-dichloro-2,2-di(perfluoro substituent)-1,3-dioxole compounds, and then conducting a fluorination reaction toobtain the 4,5-difluoro-2,2-di(perfluoro substituent)-1,3-dioxole compounds. The method of the invention effectively avoids the problem that cis and trans isomers are obtained in a traditional technology of firstly performing a fluorination reaction, eliminates the problem of reaction selectivity, greatly improves the reaction yield, reduces the production cost, is high in industrialized application feasibility, and can improve the market competitiveness of products. 本发明公开了一种4,5-二氟-2,2-二(全氟取代基)-1,3-二氧杂环戊烯类化合物的合成方法，具体包括：将4,4,5,5-四氯-2,2-二(全氟取代基)-1,3-二氧杂环戊烷类化合物先经脱卤反应得到4,5-二氯-2,2-二(全氟取代基)-1,3-二氧杂环戊烯，再经氟化反应得到所述的4,5-二氟-2,2-