Vinylidene fluoride → HCID 12559149, compound

Participants

Reaction Conditions

Reaction Steps

A metal tube containing 2-oxopentafluoropropanesulfonic acid (23.8 g, 0.10 mol) was cooled below -40° C. and vinylidene fluoride (1,1-difluoroethene) (13 g, 0.20 mol) was added. The mixture was shaken and warmed to 25° C. where it was kept for 4 hours. Distillation of the liquid product gave 20.4 g (0.07 mol, 70%) of 1,1-difluoroethyl 2-oxopentafluoropropanesulfonate, bp 62°-63° C. (50 mm Hg): λmax l (CCl4) 5.54 (C=O), 6.96 (SO2O) and 7.5-9 μm (CF, SO2); 1H NMR, δ2.06 ppm (t J=14.3 Hz) CH3 ; 19F NMR, -58.3 (q J=14.3 Hz, each member t J=7.1 Hz) 2F, OCF2, -75.0 (t J=8.0 Hz) 3F, CF3 and -106.1 ppm (q J= 8.0 Hz, each member t J=7.1 Hz) 2F, CF2SO2.

Provenance & Evidence