preparation | there are two ways to generate nitrotoluene derivatives, one is to use substituted toluene as raw material in a mixed acid of sulfuric acid and nitric acid for a period of nitration reaction with nitric acid to obtain dinitrotoluene, and the other is to use toluene nitrate as raw material to generate nitrotoluene derivatives through substitution reaction on aromatic rings. 2-Nitro-4, 5-difluorotoluene is prepared by nitration reaction with 4, 5-difluorotoluene as the starting material. |