1: 1-iodoheptadecafluorooctane With ethylmagnesium bromide in diethyl ether T=-78 - -40°C; 0.5 h; Inert atmosphere; 2: ethylene glycol cyclic sulfate With N,N'-dimethyl-N,N'-propyleneurea in diethyl ether T=-78 - -40°C; Inert atmosphere; 3: With water; potassium carbonate T=50°C; 3 h;

hydrogenchloride; water T=70°C; pH=0 - 1; 25 h;