Trifluoromethanesulfonic acid → N-trifluoroacetyl-2-iodo-4-chlorophenethylamine
Reaction equation
[F:1][C:2]([F:16])([F:15])[C:3]([NH:5][CH2:6][CH2:7][C:8]1[CH:13]=[CH:12][C:11]([Cl:14])=[CH:10][CH:9]=1)=[O:4].[B-](F)(F)(F)F.C1C=CN=CC=1.C1C=CN=CC=1.[IH2+:34].C(S(O)(=O)=O)(F)(F)F>ClCCl>[F:16][C:2]([F:1])([F:15])[C:3]([NH:5][CH2:6][CH2:7][C:8]1[CH:13]=[CH:12][C:11]([Cl:14])=[CH:10][C:9]=1[I:34])=[O:4]Participants
5
Conditions
- Temperature
- 20 °C
Procedure
A solution of N-trifluoroacetyl-4-chlorophenethylamine (1.6 g, 6.4 mmol) in dichloromethane (20 mL) was treated with bis(pyridine)iodonium(I)tetrafluoroborate (2.6 g, 7.0 mmol), CF3SO3H (2.1 g, 14.1 mmol) and stirred overnight at 20° C. The product mixture was concentrated, dissolved in EtOAc (100 mL), washed twice with 5% aqueous sodium bisulfite (50 mL), twice with saturated aqueous NaHCO3, (50 mL) once with brine (50 mL), dried with Na2SO4 and concentrated to give 0.94 g of a clear oil. MS calculated for C10H8ClF3INO+H: 378, observed: 378.
Workup
- concentrationThe product mixture was concentrated
- dissolutiondissolved in EtOAc (100 mL)
- washwashed twice with 5% aqueous sodium bisulfite (50 mL), twice with saturated aqueous NaHCO3, (50 mL) once with brine (50 mL)
- dry with materialdried with Na2SO4
- concentrationconcentrated
Sources & evidence
- ORD record
- ord-2249604238754123822a8dbc9e2b27c8
- Source dataset
- uspto-grants-2013_10
- Patent number
- US08546378B2
Reaction notes
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