Process for coupling telomers of chlorotrifluoroethylene

Details Process for coupling telomers of chlorotrifluoroethylene Process for coupling telomers of chlorotrifluoroethylene

1983-06-09

1988-07-26

Evans, J. E.

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

Organic compounds

Halogen containing

570135, 570134, 570175, C07C 1704, C07C 1726, C07C 1900, C07C 2118

Patent

active

047602082

ABSTRACT:
A process for coupling two low molecular weight telomers of chlorotrifluoroethylene comprises reacting the telomers in a solvent with an amount of iron sufficient to form a coupled olefin. The olefin can then be fluorinated using a suitable fluorinating agent, such as chlorine trifluoride, to form a saturated product. Preferably, the solvent for the coupling reaction is acetonitrile, and the reaction is conducted under reflux conditions. A small amount of FeCl.sub.2 can optionally be added to the reaction mixture as an initiator for the reaction.

REFERENCES:
patent: 2705229 (1955-03-01), Davis et al.
patent: 2739960 (1956-03-01), Dittman
patent: 2788375 (1957-04-01), Ehrenfeld
patent: 2875253 (1959-02-01), Barnhart
patent: 3046304 (1962-07-01), Haszeldine
patent: 3308175 (1967-03-01), Barr
patent: 3843734 (1974-10-01), Trebillon

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