A kind of synthetic method of dichlor fluorbenzene of improvement

The invention discloses a kind of synthetic method of dichlor fluorbenzene of improvement, suitability for industrialized production 2,6-dichlorofluorobenzene mainly carries out chlorination denitration from 2-chloro-3-fluoronitrobenzene chlorine, is then separated and obtains target product.The present invention uses anhydrous hydrogen chloride gas instead the chlorizating agent of denitration, and make reaction safer, easy to operate, conversion rate of products reaches 93%.