Novel derivatives of hexafluoropropene dimer and process for pre

Details Novel derivatives of hexafluoropropene dimer and process for pre Novel derivatives of hexafluoropropene dimer and process for pre

1979-10-15

1981-05-12

Trousof, Natalie

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

Organic compounds

Carboxylic acid esters

560223, 560237, 560 64, 560 66, 560185, 560197, 560262, 560266, 2604109R, 2604109N, C07C 6704, C07C 6954, C07C 6978

Patent

active

042673607

ABSTRACT:
Derivatives of hexafluoropropene dimer expressed by the following general formula ##STR1## in which R.sub.f represents (CF.sub.3).sub.2 C.dbd.C(CF.sub.2 CF.sub.3) or (CF.sub.3).sub.2 CH--CF(CF.sub.2 CF.sub.3) and R represents a hydrocarbon residue of a carboxylic acid having one free site capable of reacting with the dimer. A process for preparing the derivatives is also disclosed in which the dimer is contacted with the carboxylic acid in an inert solvent in the presence of a catalyst. Metal, amine or ammonium salts of the acid may be also used for the reaction, in which case the reaction is feasible in the absence of a catalyst.

REFERENCES:
patent: 3419602 (1968-12-01), Pittman et al.
patent: 3823171 (1974-07-01), Pittman et al.
Ishikawa, Nobuo et al., Bulletin of the Chemical Society of Japan, vol. 49 (2), pp. 502-505, (1976).
Yanagida, Shozo et al., Tetrahedron Letters, (27), pp. 2337-2340, (1977).
Yanagida, Shozo et al., Tetrahedron Letters, (33), pp. 2893-2894, (1977).
Martini, Thomas et al., J. Fluorine Chemistry (1976), pp. 535-540.

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