1538-06-3Relevant articles and documents
Synthesis of α,ω-dimethoxyfluoropolyethers: Reaction mechanism and kinetics
Avataneo,De Patto,Galimberti,Marchionni
, p. 633 - 639 (2005)
A new class of hydrofluoropolyethers, the α,ω- dimethoxyfluoropolyethers (DM-FPEs), characterized by the copolymeric structure CH3O(CF2CF2O)n(CF2O) mCH3 has been recently developed. The synthesis of DM-FPEs here described, has been carried out via a new synthetic route which consists of the reaction of a perfluoropolyether diacyl fluoride with methyl fluoroformate in the presence of a metal fluoride. The reaction products are DM-FPEs and carbon dioxide. Several reaction conditions has been tested varying type of solvent, temperature, type and amount of metal fluoride. The best results were obtained using tetraglyme as solvent and CsF as metal fluoride.