Potassium Carbonate → HCID 57505726, compound

HRID 1663995Notes

Reaction equation

HRID 1663995 reaction equation
I[C:2]1[CH:3]=[CH:4][C:5]2[N:6]([CH:8]=[C:9]([NH:11][C:12]([CH:14]3[CH2:16][CH2:15]3)=[O:13])[N:10]=2)[N:7]=1.[NH2:17][C:18]1[CH:19]=[CH:20][C:21]([Br:25])=[C:22]([OH:24])[CH:23]=1.C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O.O>[NH2:17][C:18]1[CH:19]=[CH:20][C:21]([Br:25])=[C:22]([CH:23]=1)[O:24][C:2]1[CH:3]=[CH:4][C:5]2[N:6]([CH:8]=[C:9]([NH:11][C:12]([CH:14]3[CH2:16][CH2:15]3)=[O:13])[N:10]=2)[N:7]=1

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 101302845-Amino-2-bromophenolHCID 57386058N-(6-iodoimidazo[1,2-b]pyridazin-2-yl)cyclopropanecarboxamide

Product 1

HCID 57505726HCID 57505726, compoundYield 31%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
140 °C

Procedure

To a solution of N-(6-iodoimidazo[1,2-b]pyridazin-2-yl)cyclopropanecarboxamide (2.2 g, 6.7 mmol) in N,N-dimethylformamide (60 mL) were added 5-amino-2-bromophenol (1.9 g, 10 mmol) and potassium carbonate (1.8 g, 13 mmol), and the mixture was stirred at 140° C. for 12 hr. After cooling the mixture to room temperature, the mixture was diluted with water, and extracted with ethyl acetate. The organic layer was washed with 5% aqueous sodium hydrogencarbonate solution and saturated brine, dried over anhydrous sodium sulfate, and filtrated. The solvent was evaporated under reduced pressure, and the residue was purified by NH silica gel column chromatography (ethyl acetate/hexane=50/50→100/0). The solvent was evaporated under reduced pressure and the obtained solid was washed with diisopropyl ether to give the title compound (0.79 g, 31%) as a yellow powder.

Workup

  1. temperatureAfter cooling the mixture to room temperature
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with 5% aqueous sodium hydrogencarbonate solution and saturated brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltrated
  6. customThe solvent was evaporated under reduced pressure
  7. customthe residue was purified by NH silica gel column chromatography (ethyl acetate/hexane=50/50→100/0)
  8. customThe solvent was evaporated under reduced pressure
  9. washthe obtained solid was washed with diisopropyl ether

Sources & evidence

ORD record
ord-85237ea002de473f9d23279afa4efbc6
Source dataset
uspto-grants-2011_10
Patent number
US08034812B2

Reaction notes

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