Triethylamine → 2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-Pentadecafluorooctyl trifluoromethanesulfonate

A mixture of 40 g of (pentadecafluoroheptyl)methanol, 11 g. of triethylamine, and 200 ml. of methylene chloride is stirred at -20° C. while a solution of 18 g. of trifluoromethanesulfonyl chloride in 50 ml. of methylene chloride is added. The solution is stirred for one hour at room temperature and then washed with ice-cold 10% hydrochloric acid, saturated aqueous sodium bicarbonate solution, and water; dried over anhydrous magnesium sulfate; and evaporated. The residual brown liquid is distilled to yield the product as a colorless liquid.