Triethylamine → Trifluoromethanesulfonic acid, 2,6-dichloro-4-[[[[3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]phenyl]methyl]amino]carbonyl]phenyl ester

HRID 393031Notes

Reaction equation

HRID 393031 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].[Cl:16][C:17]1[CH:22]=[C:21]([C:23]([NH:25][CH2:26][C:27]2[CH:32]=[CH:31][CH:30]=[C:29]([O:33][Si:34]([C:37]([CH3:40])([CH3:39])[CH3:38])([CH3:36])[CH3:35])[CH:28]=2)=[O:24])[CH:20]=[C:19]([Cl:41])[C:18]=1O.C(N(CC)CC)C>ClCCl>[F:1][C:2]([F:15])([F:14])[S:3]([O:6][C:18]1[C:17]([Cl:16])=[CH:22][C:21]([C:23]([NH:25][CH2:26][C:27]2[CH:32]=[CH:31][CH:30]=[C:29]([O:33][Si:34]([C:37]([CH3:39])([CH3:38])[CH3:40])([CH3:35])[CH3:36])[CH:28]=2)=[O:24])=[CH:20][C:19]=1[Cl:41])(=[O:5])=[O:4]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 67749Trifluoromethanesulfonic anhydrideHCID 226613522,6-Dichloro-4-[[[[3-[[(1,1-dimethylethyl)dimethyl-silyl]oxy]phenyl]methyl]amino]carbonyl]phenol

Product 1

HCID 23560678Trifluoromethanesulfonic acid, 2,6-dichloro-4-[[[[3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]phenyl]methyl]amino]carbonyl]phenyl esterYield 97%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
-70 °C

Procedure

Trifluoromethanesulfonic anhydride (3.55 mL, 21.1 mmol) was added to a cooled (−75° C. ) solution of 2,6-dichloro-4-[[[[3-[[(1,1-dimethylethyl)dimethyl-silyl]oxy]phenyl]methyl]amino]carbonyl]phenol (7.50 g, 17.6 mmol) and triethylamine (9.8 mL, 70.4 mmol) in dry dichloromethane (70 mL). After stirring for 3 h at ˜−70° C., the reaction was quenched with solid ammonium chloride (6 g). The solvent was evaporated and ethyl acetate was added. The solution was washed with 1 N HCl, saturated aqueous sodium bicarbonate and brine. The organic layer was dried (MgSO4), filtered, evaporated and dried under high vacuum to give trifluoromethanesulfonic acid, 2,6-dichloro-4-[[[[3-[[(1,1-dimethylethyl)dimethyl-silyl]oxy]phenyl]methyl]amino]carbonyl]phenyl ester (9.46 g, 97%) as pale orange oil.

Workup

  1. customthe reaction was quenched with solid ammonium chloride (6 g)
  2. customThe solvent was evaporated
  3. additionethyl acetate was added
  4. washThe solution was washed with 1 N HCl, saturated aqueous sodium bicarbonate and brine
  5. dry with materialThe organic layer was dried (MgSO4)
  6. filtrationfiltered
  7. customevaporated
  8. customdried under high vacuum

Sources & evidence

ORD record
ord-9a7809178149432798b995f421657f6f
Source dataset
uspto-grants-2004_10
Patent number
US06803384B2

Reaction notes

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