Methyl iodide → (4S,5S)-4-methyl5-phenyl-3-[(S)-2-(2-methoxyphenyl)propionyl]2-oxazolidinone

HRID 567149Notes

Reaction equation

HRID 567149 reaction equation
[CH3:1][C@H:2]1[C@H:6]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)[O:5][C:4](=[O:13])[N:3]1[C:14](=[O:24])[CH2:15][C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=1[O:22][CH3:23].[CH3:25]I>O1CCCC1.C(OCC)(=O)C>[CH3:1][C@H:2]1[C@H:6]([C:7]2[CH:8]=[CH:9][CH:10]=[CH:11][CH:12]=2)[O:5][C:4](=[O:13])[N:3]1[C:14](=[O:24])[C@H:15]([C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=1[O:22][CH3:23])[CH3:25]

Participants

5

Reactant 2

HCID 6328Methyl iodideHCID 57297643(4S,5S)-4-methyl5-Phenyl-3-(2-methoxyphenylacetyl)-2-oxazolidinone

Product 1

HCID 54310187(4S,5S)-4-methyl5-phenyl-3-[(S)-2-(2-methoxyphenyl)propionyl]2-oxazolidinone

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

19.1 g of sodium 1,1,1,3,3,3-hexamethyldisilazanate are added to a solution, cooled to −50° C., of 10 g of (4S,5S)-4-methyl-5-phenyl-3-[(2-methoxyphenyl)acetyl]oxazolidin-2-one in 150 cm3 of tetrahydrofuran, the mixture is stirred for 45 minutes at this temperature and then 7.72 cm3 of methyl iodide are added. The reaction mixture is then stirred for 15 hours at room temperature, then diluted with ethyl acetate, washed with 50 cm3 of water and then with 50 cm3 of a saturated aqueous sodium chloride solution, dried over magnesium sulphate and concentrated to dryness under reduced pressure (2.7 kPa). The residue obtained is crystallized from isopropyl ether, filtered off and dried. There are obtained 4.2 g of (4S,5S)-4-methyl-5-phenyl-3-[(S)-2-(2-methoxyphenyl)propionyl]oxazolidin-2-one in the form of a white solid.

Workup

  1. stirringThe reaction mixture is then stirred for 15 hours at room temperature
  2. washwashed with 50 cm3 of water
  3. dry with materialwith 50 cm3 of a saturated aqueous sodium chloride solution, dried over magnesium sulphate
  4. concentrationconcentrated to dryness under reduced pressure (2.7 kPa)
  5. customThe residue obtained
  6. customis crystallized from isopropyl ether
  7. filtrationfiltered off
  8. customdried

Sources & evidence

ORD record
ord-d1fafe17e0a64965b13f9a1cb501722d
Source dataset
uspto-grants-2001_01
Patent number
US06177450B1

Reaction notes

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