反应详情

In accordance with the process of Example 1, sodium fluoride, diethyleneglycol dimethyl ether and perfluoro-γ-butyrolactone were charged in the autoclave, and the mixture of ethanol and diethyleneglycol dimethyl ether (2.5/1 by volume of the solvent/ethanol) was continuously fed with stirring at 6° to 10° C. until providing 1.1 molar ratio of ethanol perfluoro-γ-butyrolactone. The reaction was ceased at this ratio.