Synthesis of perfluoroalkyl bromides

Details Synthesis of perfluoroalkyl bromides Synthesis of perfluoroalkyl bromides

1988-06-28

1990-03-27

Evans, J. E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

570137, C07C 1722, C07C 1908

Patent

active

049122690

ABSTRACT:
The invention relates to the preparation of perfluoroalkyl bromides or bromoperfluoroalkanes, CnF.sub.2n+1 -Br (n=1 to 20).
Gaseous hydrogen bromide is reacted with a perfluoroalkanesulphonyl chloride, C.sub.n F.sub.2n+1 -SO.sub.2 Cl, in the presence of a catalyst consisting of a tertiary amine or phosphine or a quaternary ammonium or phosphonium salt, at a temperature ranging from 80.degree. to 200.degree. C.

REFERENCES:
patent: 2554219 (1951-05-01), Simons et al.
patent: 3456024 (1969-07-01), Loree
Kirk-Othmer, Encyclopedia of Chemical Technology, vol. 9, 2nd Ed.

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