Process for hydroxyalkylation of fluorinated alcohols
Mono O-hydroxyalkylated derivatives of 1,1-dihydroperfluorinated or 1H,1-alkylperfluorinated alcohols are prepared by reacting the alcohols with alkylene carbonates at a temperature of at least 60° C. in the presence of a one- or two-part catalyst. The catalyst is a nitrogenous base, optionally in combination with a tetraalkylammonium halide. The O-hydroxyalkylated derivatives are useful non-ionic surfactants and emulsifiable compounds for fire extinguishing systems.
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(2008/06/13)
ASYMMETRICAL REDUCTION OF PERFLUOROALKYLATED KETONES, KETOESTERS AND VINYL COMPOUNDS WITH BAKER'S YEAST
Reduction of perfluoroalkylated ketones, ketoesters and vinyl compounds with baker's yeast was studied.The ketones and β-ketoesters were asymmetrically reduced to give optically active perfluoroalkylated carbinols and hydroxyesters, while the vinyl compounds were reduced to perfluoroalkylated alkanes.