Trifluoromethanesulfonic anhydride → 5-(Trifluoromethyl)dibenzothiophenium trifluoromethanesulfonate
Reaktionsgleichung
[F:1][C:2]([F:18])([F:17])[S:3]([C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][C:6]=1[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1)=O.[F:19][C:20]([F:33])([F:32])[S:21]([O:24]S(C(F)(F)F)(=O)=O)(=[O:23])=[O:22]>ClC(Cl)(F)C(Cl)(F)F>[F:19][C:20]([F:33])([F:32])[S:21]([O-:24])(=[O:23])=[O:22].[F:1][C:2]([F:18])([F:17])[S+:3]1[C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][C:11]=2[C:6]2[CH:7]=[CH:8][CH:9]=[CH:10][C:5]1=2Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
To a solution of 4.05 g (15 mmol) of 2-(trifluoromethylsulfinyl)biphenyl in 30 ml of 1,1,2-trichloro -1,2,2-trifluoroethane was added 2.52 ml (15 mmol) of trifluoromethanesulfonic anhydride, and the mixture was stirred at room temperature for 2 days. The white precipitate formed in the reaction system was collected by filtration to give 4.51 g (74.8%) of S-(trifluoromethyl)dibenzothiophenium trifluoromethanesulfonate. The properties of the product are shown in Table 1.