２，４－二硝基氯苯与超细氟化钾（摩尔比１∶１．２）反应制备２，４－二硝基氟苯，收率８８．５％。后者在１８０°Ｃ液相脱硝基氯化制备２，４－二氯氟苯，收率８２．５％，纯度高于９９．５％，经ＩＲ和１３ＣＮＭＲ确认其结构。实验表明本合成路线简捷，成本低，此外还探讨了在氟化和氯化时爆炸的原因 2,4-Dinitrochlorobenzene and ultrafine potassium fluoride (molar ratio 1: 1.2) were reacted to prepare 2,4-dinitrofluorobenzene in a yield of 88.5%. The latter liquid phase denitrification at 180 ° C 2,4-dichloro-fluorobenzene yield of 82.5%, purity higher than 99.5%, confirmed by IR and 13CNMR structure. Experiments show that the synthesis route is simple and low cost, in addition also explores the reasons for the explosion in the fluorination and chlorination