| 摘要 |
A process for the preparation of perfluoropolyetheracyl fluorides of formula (I) F3C(CF2)2-O-[CF(CF3)CF2-O-]nCF(CF3)COF (I) in which n is an integer from 0-60, wherein hexafluoropropylene oxide is oligomerized in the presence of CsF and a polyethylene glycol dimethyl ether and the reaction mixture thus formed is reacted with at least one of the halogen compounds HCl, HBr, BCl3, PCl3, SCl2 and RmSiCl4-m, where m=0, 1, 2 or 3 and R=C1-C3-alkyl or phenyl, dissolved in an aprotic solvent.
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