1-phenyl-2-(trifluoromethylsulfinyl)benzene

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 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. The white precipitate formed in the reaction system was collected by filtration

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 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. The white precipitate formed in the reaction system was collected by filtration

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Under ice cooling, 7.77g (31.5 mmol) of m-chloroperbenzoic acid was added little by little to a solution of 7.63 g (30 mmol) of 2-(trifluoromethylthio)biphenyl in 20 ml of methylene chloride with stirring. The mixture was stirred overnight at room temperature. The precipitate in the reaction mixture was removed by filtration, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:10) to give 7.93 g (97.8%) of 2-(trifluoromethylsulfinyl)biphenyl. The properties of the product were as shown below. The mixture was stirred overnight at room temperature The precipitate in the reaction mixture was removed by filtration the filtrate was concentrated under reduced pressure The residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:10)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Under ice cooling, 7.77g (31.5 mmol) of m-chloroperbenzoic acid was added little by little to a solution of 7.63 g (30 mmol) of 2-(trifluoromethylthio)biphenyl in 20 ml of methylene chloride with stirring. The mixture was stirred overnight at room temperature. The precipitate in the reaction mixture was removed by filtration, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:10) to give 7.93 g (97.8%) of 2-(trifluoromethylsulfinyl)biphenyl. The properties of the product were as shown below. The mixture was stirred overnight at room temperature The precipitate in the reaction mixture was removed by filtration the filtrate was concentrated under reduced pressure The residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:10)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 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. The white precipitate formed in the reaction system was collected by filtration

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Under ice cooling, 7.77g (31.5 mmol) of m-chloroperbenzoic acid was added little by little to a solution of 7.63 g (30 mmol) of 2-(trifluoromethylthio)biphenyl in 20 ml of methylene chloride with stirring. The mixture was stirred overnight at room temperature. The precipitate in the reaction mixture was removed by filtration, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:10) to give 7.93 g (97.8%) of 2-(trifluoromethylsulfinyl)biphenyl. The properties of the product were as shown below. The mixture was stirred overnight at room temperature The precipitate in the reaction mixture was removed by filtration the filtrate was concentrated under reduced pressure The residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:10)