Reaction equation
[F:1][C:2]([F:21])([F:20])[C:3]([F:19])([F:18])[S:4]([O:7]S(C(F)(F)C(F)(F)F)(=O)=O)(=[O:6])=[O:5].F[C:23](F)(F)C(F)(F)S(O)(=O)=O.C(=O)(OC)OC>>[F:1][C:2]([F:21])([F:20])[C:3]([F:19])([F:18])[S:4]([O:7][CH3:23])(=[O:6])=[O:5]Participants
4
Procedure
5.74 g (15.0 mmol) of pentafluoroethanesulfonic anhydride and 0.31 g (1.55 mmol) of pentafluoroethanesulfonic acid are initially introduced in a 10 ml round-necked flask. 1.35 g (15.0 mmol) of dimethyl carbonate are added at room temperature with constant stirring and reflux cooling. The solution is stirred for one hour at a temperature of 60° C. and subsequently for a further 3 hours at 110° C. After distillation, 5.41 g of methyl pentafluoroethanesulfonate are isolated (boiling range: 114–115° C., yield: 84.1%).
Workup
- temperaturereflux
- temperaturecooling
- stirringThe solution is stirred for one hour at a temperature of 60° C. and subsequently for a further 3 hours at 110° C
- distillationAfter distillation, 5.41 g of methyl pentafluoroethanesulfonate
- customare isolated (boiling range: 114–115° C., yield: 84.1%)
Sources & evidence
- ORD record
- ord-8b47c9918eef431b95489edd655f8465
- Source dataset
- uspto-grants-2006_08
- Patent number
- US07084290B2
Linked notes
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