Sodium hydride → HCID 66716634, compound

HRID 1028527Notes

Reaction equation

HRID 1028527 reaction equation
[H-].[Na+].[CH2:3]([C@H:10]1[CH2:14][O:13][C:12](=[O:15])[NH:11]1)[C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1.Br[CH2:17][C:18]1[CH:23]=[C:22]([C:24]([F:27])([F:26])[F:25])[CH:21]=[CH:20][C:19]=1[I:28]>C1COCC1>[CH2:3]([C@H:10]1[CH2:14][O:13][C:12](=[O:15])[N:11]1[CH2:17][C:18]1[CH:23]=[C:22]([C:24]([F:25])([F:27])[F:26])[CH:21]=[CH:20][C:19]=1[I:28])[C:4]1[CH:5]=[CH:6][CH:7]=[CH:8][CH:9]=1

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 736225(S)-4-Benzyl-2-oxazolidinoneHCID 184515342-(Bromomethyl)-1-iodo-4-(trifluoromethyl)benzene

Product 1

HCID 66716634HCID 66716634, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent3×

Procedure

A stirred suspension of sodium hydride (60% in oil, 27 mg, 0.68 mmol) in THF (3 mL) was treated at 0° C. with (S)-4-benzyl-2-oxazolidinone (49 mg, 0.27 mmol) dissolved in THF (1 mL), under an atmosphere of N2. The reaction was stirred for 20 min and a solution of 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene (100 mg, 0.27 mmol) in THF (1 mL) was added dropwise. The reaction was stirred at room temperature for 18 h. The reaction was quenched with H2O (1 mL) and partitioned between EtOAc (80 mL) and H2O (25 mL). The aqueous phase was re-extracted with EtOAc (2×20 mL) and the combined organic extracts were washed with brine (30 mL), dried (MgSO4) and concentrated in vacuo to give the crude product. This was purified by flash silica-gel chromatography (0-30% EtOAc in hexanes gradient) to afford (4S)-4-benzyl-3-[2-iodo-5-(trifluoromethyl)benzyl]1,3-oxazolidin-2-one. Rf=0.45 (15% EtOAc/hexanes). LCMS 462 (M+1)+. 1H NMR (CDCl3, 500 MHz) δ 8.04 (d, J=8.2 Hz, 1H), 7.54 (br s, 1H), 7.33-7.27 (m, 5H), 7.11-7.10 (m, 2H), 7.32 (m, 1H), 4.80 (d, J=16.0 Hz, 1H), 4.49 (d, J=16.1 Hz), 4.28 (t, J=8.7 Hz, 1H), 4.25 (t, J=9.1, 4.8 Hz, 1H), 3.94 (m, 1H), 3.16 (dd, J=13.5, 4.8 Hz, 1H), 2.73 (dd, J=9.1, 4.4 Hz, 1H).

Workup

  1. stirringThe reaction was stirred at room temperature for 18 h
  2. customThe reaction was quenched with H2O (1 mL)
  3. custompartitioned between EtOAc (80 mL) and H2O (25 mL)
  4. extractionThe aqueous phase was re-extracted with EtOAc (2×20 mL)
  5. washthe combined organic extracts were washed with brine (30 mL)
  6. dry with materialdried (MgSO4)
  7. concentrationconcentrated in vacuo
  8. customto give the crude product
  9. customThis was purified by flash silica-gel chromatography (0-30% EtOAc in hexanes gradient)

Sources & evidence

ORD record
ord-8eb6637b143a451c87b0b83d781b4bf3
Source dataset
uspto-grants-2014_05
Patent number
US08735435B2

Reaction notes

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