Perfluoro α,ω-diolefins and some of their reactions
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By the telomerization of tetrafluoroethylene with 1,2-dichlorotrifluoroiodoethane a series of dichloropolyfluoroiodoalkanes CF2ClCFCl(CF2CF2)nI (n=1 2m,3, and 4) were prepared.
Under the action of zinc the resulting dichloropolyfluoroiodoalkanes were converted into the corresponding tetrachloropolyfluoroalkanes and further into perfluoro α,ω-diolefons CF2=CF(CF2)nCF=CF2 (n=2, 3, 4, and 6).
Oxidation of the perfluoro α.ω-diolefins gave perfluoro dicarboxylic acids HOOC(CF2CF2nCOOH (n=2, 3, 4, and 6).
By the heterophase condensation of perfluoroadipoyl and of perfluorosebacoyl chloride with 1,6-hexanediamine, fluorinated polyamides were prepared.
KeywordsOxidation Chloride Zinc Dicarboxylic Acid Tetrafluoroethylene
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