| 1. |
From the higher perfluorodicarboxylic acids of the general formula HOOC(CF2)nCOOH, where n is 4,8,12, which are prepared from the products of the telomerization of tetrafluoroethylene with trifluoridchloroiodoethane, difunctional derivatives have been synthesized — acid chlorides, esters, amides, nitriles, and amidines.
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| 2. |
By reduction of the esters of perfluoroadipic, perfluorosebacic, and perfluorododecamethylenedicarboxylic acids with sodium borohydride in the presence of anhydrous aluminium chloride, the corresponding  ,, ,-tetrahydroperfluorodiols with the general formula, HOCH2(CF2)nCH2OH(n=4,8,12) have been obtained.
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