PRESENT-DAY CONDITION OF FLUOROAROMATIC COMPOUNDS PRODUCTION TECHNOLOGY

G.G. Furin ^{a *}, L.E. Deev ^b

^a* Novosibirsk Institute of Organic Chemistry , Russian Academy of Science 630090, Novosibirsk, Ac. Lavrentiev av. 9, e-mail : furin@nioch.nsc.ru

^b  Perm State Agricultural Academy, 614990, Perm, e-mail : deev@permonline.ru

Here we describe effectiveness of interphase transfer catalysts use to obtain polyfluoroaromatic compounds by potassium fluoride influence on polychlorbenzenes. Such catalysts as hexaethylguanidine chloride, tetra-(diethylamino)- phosphonium bromide are involved into stabilization of intermediate s-complex. Catalytic participation of polyethers (tetraethyleneglycole dimethyl ether, 18-crown-6) in fluorodechlorinating process doesn't go beyond increasing of "active"  fluoride-ion concentration. Here we consider the opportunities of mechanic and chemical technology application to synthesize fluoroaromatic compounds by substituting chlorine for fluorine in the solid phase of chloroaromatic compounds and fluorides of alkali, alkali-landed metals and composite mixtures based on them. We also discuss the question regarding synthesizing fluoroaromatic compounds out of commercial chladones (freons) and polyfluorolefines.

Contents

Introduction

1. Hexafluorobenzene synthesis by potassium fluoride influencing hexachlorobenzene in the presence of catalysts.

2. Mechano-chemical obtaining method of hexafluorobenzene.

3. The using of polyhaloidbenzenes fluorination and fluorination products' dehalogenation processes as obtaining method of hexafluorobenzene and other aromatic compounds.

4. Synthesis of fluoroaromatic compounds out of commercial chladones and polyfluorolefines.

Conclusion

References