Hydrochloric Acid → 4-Bromo-2,6-dimethylphenyl trifluoromethanesulfonate

HRID 2220623Notes

Reaction equation

HRID 2220623 reaction equation
[F:1][C:2]([F:15])([F:14])[S:3]([O:6]S(C(F)(F)F)(=O)=O)(=[O:5])=[O:4].[Br:16][C:17]1[CH:22]=[C:21]([CH3:23])[C:20](O)=[C:19]([CH3:25])[CH:18]=1.N1C=CC=CC=1.Cl>C(Cl)Cl.C(OCC)(=O)C>[F:1][C:2]([F:15])([F:14])[S:3]([O:6][C:20]1[C:21]([CH3:23])=[CH:22][C:17]([Br:16])=[CH:18][C:19]=1[CH3:25])(=[O:5])=[O:4]

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 1049PyridineHCID 169194-Bromo-2,6-dimethylphenolHCID 67749Trifluoromethanesulfonic anhydride

Product 1

HCID 231343334-Bromo-2,6-dimethylphenyl trifluoromethanesulfonate

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

Trifluoromethanesulfonic anhydride (1.004 mL) was added to an ice-cooled mixture of 4-bromo-2,6-dimethylphenol (1.00 g) and pyridine (0.482 mL) in methylene chloride (5 mL) with stirring. After being stirred for 10 minutes, the reaction mixture was poured into a mixture of 1 mol/L hydrochloric acid and ethyl acetate. The organic layer was separated, washed with water and brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (eluent: diethyl ether/n-hexane=1/20) to afford 4-bromo-2,6-dimethylphenyl trifluoromethanesulfonate (1.439 g).

Workup

  1. temperaturecooled
  2. stirringAfter being stirred for 10 minutes
  3. customThe organic layer was separated
  4. washwashed with water and brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customThe solvent was evaporated under reduced pressure
  7. customthe residue was purified by silica gel column chromatography (eluent: diethyl ether/n-hexane=1/20)

Sources & evidence

ORD record
ord-31181d6510d442a09db40694d9f917d6
Source dataset
uspto-grants-2008_08
Patent number
US07417169B2

Reaction notes

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