A new route to perfluorinated vinyl ether monomers: synthesis of perfluoro(alkoxyalkanoyl) fluorides from non-fluorinated compounds

A new synthetic procedure for the preparation of various perfluoro(alkoxyal kanoyl) fluorides, which are precursors to perfluorinated vinyl ether monom ers, from non-fluorinated alkoxyalcohols has been developed. Available perf luoro(alkoxyalkanoyl) fluorides such as perfluoro(2-propoxypropionyl) fluor ide, so-called BFPO dimer, can be multiplied by the use of the hydrocarbon counterpart alcohols and fluorine gas as raw materials. In the case that th e desired perfluoro(alkoxyalkanoyl) fluoride is not readily available, it c an be obtained from its hydrocarbon counterpart alcohol and an available pe rfluoroacyl fluoride. (C) 2001 Elsevier Science B.V. All rights reserved.