The reaction of alcoholates with esters of perfluoroalkylethanoic acid
(I) and 3-perfluoroalkyl-3-fluoro-propenoic acid (II) has been studie
d. Formation of ethers of the enol ester III or the acetal IV depends
on the stoichiometric conditions used. The formation of the products p
roceeds via a Michael-type addition and elimination of fluoride ions f
rom the enolate formed as an intermediate.