1,2-Dimethoxyethane → HCID 66672864, compound

HRID 422922Notes

Reaction equation

HRID 422922 reaction equation
[CH3:1][C@@:2]1([CH2:8][CH2:9][C:10]2[N:11]([CH3:16])[C:12](I)=[CH:13][CH:14]=2)[CH2:6][O:5][C:4](=[O:7])[NH:3]1.[CH:17]1([CH2:23][CH2:24][O:25][C:26]2[CH:27]=[C:28](B3OC(C)(C)C(C)(C)O3)[CH:29]=[CH:30][CH:31]=2)[CH2:22][CH2:21][CH2:20][CH2:19][CH2:18]1.C(=O)([O-])[O-].[Cs+].[Cs+].C(COC)OC>O>[CH3:1][C@@:2]1([CH2:8][CH2:9][C:10]2([C:30]3[CH:29]=[CH:28][CH:27]=[C:26]([O:25][CH2:24][CH2:23][CH:17]4[CH2:22][CH2:21][CH2:20][CH2:19][CH2:18]4)[CH:31]=3)[CH2:14][CH:13]=[CH:12][N:11]2[CH3:16])[CH2:6][O:5][C:4](=[O:7])[NH:3]1

Participants

6

Reactant 4

HCID 80711,2-DimethoxyethaneHCID 10796Cesium carbonateHCID 23031433HCID 23031433, compoundHCID 66672962HCID 66672962, compound

Product 1

HCID 66672864HCID 66672864, compoundYield 11%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Conditions

Temperature
80 °C

Procedure

(4R)-4-Methyl-4-[2-(5-iodo-1-methylpyrrol-2-yl)ethyl]-1,3-oxazolidin-2-one (0.3101 g, 0.92 mmol) obtained in Example (40a), 2-[3-(2-cyclohexylethyloxy)phenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (0.4646 g, 1.41 mmol), dichlorobis(triphenylphopsphine)palladium(II) (63.1 mg, 0.09 mmol) and cesium carbonate (0.6006 g, 1.81 mmol) were suspended in a mixed solvent of dimethoxyethane (8 ml) and water (2 ml) and stirred at 80° C. for 6 hours. After cooling, water was added to the reaction mixture, and the resulting mixture was extracted with ethyl acetate. The extract was washed successively with water and saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate. After filtration, the solvent was removed in vacuo, and the residue was purified by chromatography on a silica gel column using a mixed solvent of ethyl acetate and hexane (3:2) as the eluent to afford the crude product. Furthermore, the crude product thus obtained was purified using a preparative reversed phase HPLC column [Inertsil ODS-3 (2.0 cm×25 cm), GL Science, mobile phase: acetonitrile/water (75:25), flow rate: 10 ml/min] to afford the title compound (41.1 mg, yield: 11%).

Workup

  1. temperatureAfter cooling
  2. extractionthe resulting mixture was extracted with ethyl acetate
  3. washThe extract was washed successively with water and saturated aqueous sodium chloride solution
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationAfter filtration
  6. customthe solvent was removed in vacuo
  7. customthe residue was purified by chromatography on a silica gel column
  8. customto afford the crude product
  9. customFurthermore, the crude product thus obtained
  10. customwas purified

Sources & evidence

ORD record
ord-4b529a3fb0724482a23e27bc5cab7a45
Source dataset
uspto-grants-2012_01
Patent number
US08101650B2

Reaction notes

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