Process for the preparation of hexafluorobutane, and intermediat

Details Process for the preparation of hexafluorobutane, and intermediat Process for the preparation of hexafluorobutane, and intermediat

1993-04-15

1994-05-24

Siegel, Alan

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

Organic compounds

Halogen containing

570166, 570175, 570176, C07C 1708, C07C 1908

Patent

active

053150473

ABSTRACT:
1,1,1,4,4,4-Hexafluorobutane is prepared by first reacting 1,1,3,4,4-pentachlorobuta-1,3-diene with hydrogen fluoride in the presence of catalysts at 60.degree. to 180.degree. C. to give 1,1,1,4,4,4-hexafluoro-2-chlorobutane, and converting this to 1,1,1,4,4,4-hexafluorobutane. On working up the product of the first stage of the process, it is possible to isolate novel compounds of formula (I):

REFERENCES:
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patent: 4954666 (1990-09-01), Bielefeldt et al.
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patent: 5146019 (1992-09-01), Bielefeldt et al.
patent: 5171901 (1992-12-01), Gassen et al.
patent: 5210340 (1993-05-01), Bielefeldt et al.
The Journal of Physical Chemistry, vol. 83, No. 20; Oct. 4, 1979; pp. 5-12.

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