Cesium carbonate → HCID 136026723, compound

HRID 1718248Notes

Reaction equation

HRID 1718248 reaction equation
[CH2:1]([C:8]1[C:9](=[O:18])[NH:10][C:11]([S:15][CH2:16][CH3:17])=[N:12][C:13]=1[CH3:14])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Br[CH2:20][C:21]1[CH:26]=[CH:25][C:24]([C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][C:28]=2[C:33]2[N:37]=[C:36](C(Cl)(Cl)Cl)[O:35][N:34]=2)=[CH:23][CH:22]=1.C(=O)([O-])[O-:43].[Cs+].[Cs+]>CN(C)C=O.C(OCC)(=O)C>[CH2:1]([C:8]1[C:9](=[O:18])[N:10]([CH2:20][C:21]2[CH:26]=[CH:25][C:24]([C:27]3[CH:32]=[CH:31][CH:30]=[CH:29][C:28]=3[C:33]3[NH:37][C:36](=[O:43])[O:35][N:34]=3)=[CH:23][CH:22]=2)[C:11]([S:15][CH2:16][CH3:17])=[N:12][C:13]=1[CH3:14])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 15290996HCID 15290996, compoundHCID 135460826HCID 135460826, compound

Product 1

HCID 136026723HCID 136026723, compoundYield 6%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 5-benzyl-2-(ethylthio)-6-methylpyrimidin-4(3H)-one (0.22 g) and 3-[4′-(bromomethyl)biphenyl-2-yl]-5-(trichloromethyl)-1,2,4-oxadiazole (0.44 g) in N,N-dimethylformamide (5 mL) was added cesium carbonate (0.36 g), and the mixture was stirred for 12 hr. The reaction mixture was diluted with ethyl acetate, washed with 1 M hydrochloric acid and saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The residue was dissolved in tetrahydrofuran-ethanol (1:1, 4 mL), 1 M sodium hydroxide (2 mL) was added and the mixture was stirred for 30 min. The reaction mixture was weakly acidified with 1 M hydrochloric acid and extracted with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography to give the title compound (0.025 g, 6%) as a colorless solid.

Workup

  1. washwashed with 1 M hydrochloric acid and saturated brine
  2. dry with materialdried over anhydrous sodium sulfate
  3. customThe solvent was evaporated under reduced pressure
  4. dissolutionThe residue was dissolved in tetrahydrofuran-ethanol (1:1, 4 mL)
  5. addition1 M sodium hydroxide (2 mL) was added
  6. stirringthe mixture was stirred for 30 min
  7. extractionextracted with ethyl acetate
  8. washThe organic layer was washed with saturated brine
  9. dry with materialdried over anhydrous sodium sulfate
  10. customThe solvent was evaporated under reduced pressure
  11. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-013d545bc1cc4291af4a9e1fd2fc108b
Source dataset
uspto-grants-2010_09
Patent number
US07803940B2

Reaction notes

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