Trifluoromethanesulfonic acid → N-trifluoroacetyl-2-iodo-4-chlorophenethylamine

HRID 967280Notes

Reaction equation

HRID 967280 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

Reactant 3

HCID 62406Trifluoromethanesulfonic acidHCID 10883201Bis(pyridine)iodonium tetrafluoroborateHCID 22292794n-Trifluoroacetyl-4-chlorophenethylamine

Product 1

HCID 22292821N-trifluoroacetyl-2-iodo-4-chlorophenethylamineYield 38.9%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

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

  1. concentrationThe product mixture was concentrated
  2. dissolutiondissolved in EtOAc (100 mL)
  3. washwashed twice with 5% aqueous sodium bisulfite (50 mL), twice with saturated aqueous NaHCO3, (50 mL) once with brine (50 mL)
  4. dry with materialdried with Na2SO4
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-8f37cbdff63d4417b78e2802b6931b93
Source dataset
uspto-grants-2005_10
Patent number
US06953787B2

Reaction notes

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