1,2,3,4 Tetrakis-(perfluoroalkyl)-1,3-butadienes

Details 1,2,3,4 Tetrakis-(perfluoroalkyl)-1,3-butadienes 1,2,3,4 Tetrakis-(perfluoroalkyl)-1,3-butadienes

1975-01-28

1976-09-28

Horwitz, D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2606531T, 2606531R, 424351, C07C 2120

Patent

active

039831795

ABSTRACT:
A polyfluorinated butadiene having the formula ##EQU1## wherein n and m are integers from 1 to 10 and n=m or n.noteq.m, is prepared by reductive coupling, exemplarily with copper, of the corresponding 1,2-bis(perfluoroalkyl)iodoethylene having the formula CF.sub.3 (CF.sub.2).sub.n CH = CI--(CF.sub.2).sub.m CF.sub.3. This iodoethylene is conveniently prepared by a simple addition reaction between a perfluoroalkyl iodide and a perfluoroalkyl acetylene. The perfluoralkylated butadienes are useful as transporters of dissolved gas, particularly of oxygen as in blood substitutes.

REFERENCES:
patent: 3145222 (1964-08-01), Brace
patent: 3218303 (1965-11-01), Anderson et al.
patent: 3317618 (1967-05-01), Haszeldine
Leedham et al., J. Chem. Soc. 1954, pp. 1634-1638.

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