Potassium Carbonate → HCID 136052408, compound

HRID 1889554Notes

Reaction equation

HRID 1889554 reaction equation
[C:1]1([CH2:7][CH2:8][N:9]2[C:18](=[O:19])[C:17]3[C:12](=[CH:13][CH:14]=[C:15]([CH:20]=[CH2:21])[CH:16]=3)[NH:11][C:10]2=[O:22])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.Br[CH2:24][C:25]1[CH:30]=[CH:29][C:28]([C:31]2[CH:36]=[CH:35][CH:34]=[CH:33][C:32]=2[C:37]2[N:41]=[C:40](C(Cl)(Cl)Cl)[O:39][N:38]=2)=[CH:27][CH:26]=1.C(=O)([O-])[O-:47].[K+].[K+]>C(#N)C>[O:47]=[C:40]1[O:39][N:38]=[C:37]([C:32]2[CH:33]=[CH:34][CH:35]=[CH:36][C:31]=2[C:28]2[CH:29]=[CH:30][C:25]([CH2:24][N:11]3[C:12]4[C:17](=[CH:16][C:15]([CH:20]=[CH2:21])=[CH:14][CH:13]=4)[C:18](=[O:19])[N:9]([CH2:8][CH2:7][C:1]4[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=4)[C:10]3=[O:22])=[CH:26][CH:27]=2)[NH:41]1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 15290996HCID 15290996, compoundHCID 59351564HCID 59351564, compound

Product 1

HCID 136052408HCID 136052408, compoundYield 57.9%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
50 °C

Procedure

A mixture of 3-(2-phenylethyl)-6-vinylquinazoline-2,4(1H,3H)-dione (0.40 g), 3-[4′-(bromomethyl)biphenyl-2-yl]-5-(trichloromethyl)-1,2,4-oxadiazole (0.65 g), potassium carbonate (0.38 g) and acetonitrile (16 mL) was stirred at 50° C. for 2 hr. Insoluble material was filtered off, and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography and dissolved in tetrahydrofuran (4 mL) and acetone (4 mL). 1N Aqueous sodium hydroxide solution (4 mL) was added, and the mixture was stirred at room temperature for 1 hr. The reaction mixture was adjusted to pH 4 with water and 1N hydrochloric acid, and extracted with chloroform. The obtained chloroform layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography to give the title compound as a colorless solid (0.43 g, 57%).

Workup

  1. filtrationInsoluble material was filtered off
  2. customthe solvent was evaporated under reduced pressure
  3. customThe obtained residue was purified by silica gel column chromatography
  4. dissolutiondissolved in tetrahydrofuran (4 mL)
  5. addition1N Aqueous sodium hydroxide solution (4 mL) was added
  6. stirringthe mixture was stirred at room temperature for 1 hr
  7. extractionextracted with chloroform
  8. washThe obtained chloroform layer was washed with saturated brine
  9. dry with materialdried over anhydrous magnesium sulfate
  10. customThe solvent was evaporated under reduced pressure
  11. customThe obtained residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-4979777d7a3144e9a4491ca9d72906f6
Source dataset
uspto-grants-2013_08
Patent number
US08501750B2

Reaction notes

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