Heptafluorobutyric acid → Triphenylsulfonium heptafluorobutanoate

Participants

Reaction Steps

In aqueous methanol solution were dissolved 20.6 g (50 mmol) of the resulting triphenylsulfonium trifluoromethanesulfonate, and passed through an activated strong base type anion exchange resin (Amberlite IRA-900 by Organo Corp.). To the elutant solution was added 24.8 g (60 mmol) of heptafluorobutyric acid and allowed reacting with stirring at room temperature for 1 hour. After completion of the reaction, the solvent was removed and the residue was dissolved in 200 ml methylene chloride, washed with water 3 times and concentrated under reduced pressure to give 28.4 g (yield: 84%) of triphenylsulfonium heptafluorobutanoate as a white crystal.

Provenance & Evidence