Potassium Carbonate → HCID 23078405, compound

HRID 228852Notes

Reaction equation

HRID 228852 reaction equation
Br[C:2]1[C:11]([O:12][C:13]2[C:22]3[C:17](=[CH:18][C:19]([O:25][CH3:26])=[C:20]([O:23][CH3:24])[CH:21]=3)[N:16]=[CH:15][CH:14]=2)=[CH:10][C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]=1.[N:27]1[CH:32]=[CH:31][CH:30]=[C:29](B(O)O)[CH:28]=1.C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[CH3:24][O:23][C:20]1[CH:21]=[C:22]2[C:17](=[CH:18][C:19]=1[O:25][CH3:26])[N:16]=[CH:15][CH:14]=[C:13]2[O:12][C:11]1[C:2]([C:29]2[CH:28]=[N:27][CH:32]=[CH:31][CH:30]=2)=[N:3][C:4]2[C:9]([CH:10]=1)=[CH:8][CH:7]=[CH:6][CH:5]=2

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 27343783-Pyridinylboronic acidHCID 23078407HCID 23078407, compound2×

Product 1

HCID 23078405HCID 23078405, compoundYield 33%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

4-(2-Bromo-quinolin-3-yloxy)-6,7-dimethoxy-quinoline (compound 281) (50 mg), tetrakistriphenylphosphine palladium(0) (14 mg), and 3-pyridineboronic acid (42 mg) were suspended in a mixed solvent composed of N,N-dimethylformamide (1 ml) and a 2 N aqueous potassium carbonate solution (1 ml), and the mixture was stirred at 80° C. for 3 hr. The reaction solution was cooled to room temperature, the reaction solution was then filtered, and the solvent was removed from the filtrate by distillation under the reduced pressure. Water was then added to the residue, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was then washed with water and saturated brine and was dried over anhydrous magnesium sulfate. The solvent was removed by distillation under the reduced pressure, and the residue was purified by thin layer chromatography using acetone-chloroform to give the title compound (16 mg, yield 33%).

Workup

  1. filtrationthe reaction solution was then filtered
  2. customthe solvent was removed from the filtrate by distillation under the reduced pressure
  3. additionWater was then added to the residue
  4. extractionthe mixture was extracted with ethyl acetate
  5. washThe ethyl acetate layer was then washed with water and saturated brine
  6. dry with materialwas dried over anhydrous magnesium sulfate
  7. customThe solvent was removed by distillation under the reduced pressure
  8. customthe residue was purified by thin layer chromatography

Sources & evidence

ORD record
ord-ebf70476b95d4f988b566c0a43e35d8e
Source dataset
uspto-grants-2009_07
Patent number
US07560558B2

Reaction notes

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