The Synthesis Of Fluoroaromatics

The fluoroaromatics are widely used in the medicine, pesticide and dye. The synthesis of the fluoroaromatics is highly regarded, especially how to apply it to the fact production .The Balz-Schiemann is the method of synthesizing the fluoroaromatics. However, reaction for the limitation of the method it is only used in the lab and seldom used in the fact.The paper discloses a process for diazotization fluorination of aromatic primary amines utilizing sodium nitrite and anhydrous hydrofluoride to produce the corresponding diazonium fluoride which is decomposed, usually by heat, to make the desired fluoroaromatics .The improvement of the present method is the introduction of NH4+ions, tertiary amine in the solution of HE The stucture of the aromatic primary amines is affected to synthese the corresponding fluoroaromatics with the new method.