Water → 3-[(2E)-3-(4-tert-butylphenyl)-3-(5-chloro-6-methoxypyridin-2-yl)prop-2-en-1-yl]-1,3-oxazolidin-2-one

HRID 70698Notes

Reaction equation

HRID 70698 reaction equation
[H-].[Na+].[O:3]1[CH2:7][CH2:6][NH:5][C:4]1=[O:8].Br[CH2:10]/[CH:11]=[C:12](/[C:23]1[N:28]=[C:27]([O:29][CH3:30])[C:26]([Cl:31])=[CH:25][CH:24]=1)\[C:13]1[CH:18]=[CH:17][C:16]([C:19]([CH3:22])([CH3:21])[CH3:20])=[CH:15][CH:14]=1.O>O1CCCC1>[C:19]([C:16]1[CH:15]=[CH:14][C:13](/[C:12](/[C:23]2[CH:24]=[CH:25][C:26]([Cl:31])=[C:27]([O:29][CH3:30])[N:28]=2)=[CH:11]\[CH2:10][N:5]2[CH2:6][CH2:7][O:3][C:4]2=[O:8])=[CH:18][CH:17]=1)([CH3:20])([CH3:21])[CH3:22]

Participants

6

Reactant 4

HCID 962WaterHCID 24758Sodium hydrideHCID 739492-OxazolidinoneHCID 584528146-[(1E)-3-Bromo-1-(4-tert-butylphenyl)prop-1-en-1-yl]-3-chloro-2-methoxypyridine

Product 1

HCID 673984323-[(2E)-3-(4-tert-butylphenyl)-3-(5-chloro-6-methoxypyridin-2-yl)prop-2-en-1-yl]-1,3-oxazolidin-2-oneYield 98%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

A suspension of sodium hydride (purity: 60%, 60 mg) in tetrahydrofuran (1.0 mL) was added to a solution of 2-oxazolidinone (153 mg) in tetrahydrofuran (1.0 mL) under ice-cooling, and the mixture was stirred at room temperature for 30 minutes. 6-[(1E)-3-Bromo-1-(4-tert-butylphenyl)prop-1-en-1-yl]-3-chloro-2-methoxypyridine obtained in Reference Example 4-5 (303 mg) was added thereto, and the mixture was stirred at room temperature for 20 hours. Water was added to the reaction solution, followed by extraction with ethyl acetate. The organic layer was washed with brine and dried over sodium sulfate. After filtration, the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=9:1→3:2) to give 3-[(2E)-3-(4-tert-butylphenyl)-3-(5-chloro-6-methoxypyridin-2-yl)prop-2-en-1-yl]-1,3-oxazolidin-2-one as a light brown powder (298 mg, 98%).

Workup

  1. temperaturecooling
  2. additionwas added
  3. stirringthe mixture was stirred at room temperature for 20 hours
  4. extractionfollowed by extraction with ethyl acetate
  5. washThe organic layer was washed with brine
  6. dry with materialdried over sodium sulfate
  7. filtrationAfter filtration
  8. customthe solvent was evaporated under reduced pressure
  9. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=9:1→3:2)

Sources & evidence

ORD record
ord-ef25cd31208345898a90839280f8c46e
Source dataset
uspto-grants-2014_09
Patent number
US08822503B2

Reaction notes

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