Reaction #502063

Reaction equation

Perfluorobutane-1,4-disulfonic acid potassium salt

triphenylsulfonium bromide

Chloroform

→

bis(triphenylsulfonium) perfluorobutane-1,4-disulfonate

Solvents

water

Conditions

Workup

1. 1
   WashThe chloroform layer was washed several times with water
2. 2
   Dryingdried over anhydrous sodium sulfate
3. 3
   Filtrationfiltered
4. 4
   Otherthe filtrate evaporated to an oil stage
5. 5
   workup.ADDITIONEther was added to the oil
6. 6
   workup.STIRRINGthe mixture was stirred vigorously
7. 7
   OtherA white precipitate formed
8. 8
   FiltrationThe mixture was filtered
9. 9
   Otherrecovered precipitate
10. 10
    Otherwas dried under vacuum
11. 11
    Otherresulting in a white powder

Procedure

Perfluorobutane-1,4-disulfonic acid potassium salt (2.5 g) was added to a solution of triphenylsulfonium bromide (3.5 g) in 150 ml of water. Chloroform (150 ml) was added and stirred for 5 hours. The chloroform layer was washed several times with water, dried over anhydrous sodium sulfate, filtered, and the filtrate evaporated to an oil stage. Ether was added to the oil and the mixture was stirred vigorously. A white precipitate formed. The mixture was filtered and recovered precipitate was dried under vacuum, resulting in a white powder; mp 155° C.

Source