Water → tert-butyl (1RS,2SR)-2-hydroxy-2-[4-(pyridin-2-yloxy)phenyl]-1-[3-(1,1,2,2-tetrafluoroethoxy)benzyl]ethylcarbamate

HRID 1610598Notes

Reaction equation

HRID 1610598 reaction equation
O=C1[N:6]([C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8])[CH:5]([CH2:14][C:15]2[CH:20]=[CH:19][CH:18]=[C:17]([O:21][C:22]([F:27])([F:26])[CH:23]([F:25])[F:24])[CH:16]=2)[CH:4]([C:28]2[CH:33]=[CH:32][C:31]([O:34][C:35]3[CH:40]=[CH:39][CH:38]=[CH:37][N:36]=3)=[CH:30][CH:29]=2)[O:3]1.[OH-].[Na+].O>CO>[OH:3][CH:4]([C:28]1[CH:33]=[CH:32][C:31]([O:34][C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][N:36]=2)=[CH:30][CH:29]=1)[CH:5]([NH:6][C:7](=[O:8])[O:9][C:10]([CH3:13])([CH3:12])[CH3:11])[CH2:14][C:15]1[CH:20]=[CH:19][CH:18]=[C:17]([O:21][C:22]([F:26])([F:27])[CH:23]([F:24])[F:25])[CH:16]=1

Participants

5

Reactant 3

HCID 962WaterHCID 14798Sodium HydroxideHCID 86593275tert-butyl (4RS,5SR)-2-oxo-5-[4-(pyridin-2-yloxy)phenyl]-4-[3-(1,1,2,2-tetrafluoroethoxy)benzyl]-1,3-oxazolidine-3-carboxylate

Product 1

HCID 86593276tert-butyl (1RS,2SR)-2-hydroxy-2-[4-(pyridin-2-yloxy)phenyl]-1-[3-(1,1,2,2-tetrafluoroethoxy)benzyl]ethylcarbamate

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent2×

Procedure

To a solution of tert-butyl (4RS,5SR)-2-oxo-5-[4-(pyridin-2-yloxy)phenyl]-4-[3-(1,1,2,2-tetrafluoroethoxy)benzyl]-1,3-oxazolidine-3-carboxylate (3.00 g, 5.33 mmol) in methanol (20 ml) was added a solution (12.8 ml, 6.4 mmol) of 0.5N sodium hydroxide in methanol, and the mixture was stirred at room temperature for 1 hr. To the reaction solution was added water (100 ml), and the mixture was extracted with ethyl acetate (100 ml×2). The extract was washed with saturated brine, dried (anhydrous magnesium sulfate) and evaporated under reduced pressure. The residue was recrystallized from ethyl acetate-hexane to give the objective substance (2.67 g, 93%).

Workup

  1. extractionthe mixture was extracted with ethyl acetate (100 ml×2)
  2. washThe extract was washed with saturated brine
  3. dry with materialdried (anhydrous magnesium sulfate)
  4. customevaporated under reduced pressure
  5. customThe residue was recrystallized from ethyl acetate-hexane
  6. customto give the objective substance (2.67 g, 93%)

Sources & evidence

ORD record
ord-9a176ab1a23245a598133cdf53322b30
Source dataset
uspto-grants-2006_01
Patent number
US06982348B2

Reaction notes

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