Ethyl isocyanate → HCID 57749114, compound

HRID 1874405Notes

Reaction equation

HRID 1874405 reaction equation
[NH2:1][C:2]1[N:3]=[C:4]2[CH:9]=[CH:8][C:7]([O:10][C:11]3[CH:12]=[CH:13][C:14]([F:27])=[C:15]([NH:17][C:18]([C:20]4[N:24]([CH3:25])[N:23]=[C:22]([CH3:26])[CH:21]=4)=[O:19])[CH:16]=3)=[CH:6][N:5]2[CH:28]=1.[CH2:29]([N:31]=[C:32]=[O:33])[CH3:30]>O1CCCC1.O>[CH2:29]([NH:31][C:32]([NH:1][C:2]1[N:3]=[C:4]2[CH:9]=[CH:8][C:7]([O:10][C:11]3[CH:12]=[CH:13][C:14]([F:27])=[C:15]([NH:17][C:18]([C:20]4[N:24]([CH3:25])[N:23]=[C:22]([CH3:26])[CH:21]=4)=[O:19])[CH:16]=3)=[CH:6][N:5]2[CH:28]=1)=[O:33])[CH3:30]

Participants

5

Reactant 2

HCID 8022Ethyl isocyanateHCID 57749303HCID 57749303, compound

Product 1

HCID 57749114HCID 57749114, compoundYield 25.3%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of N-{5-[(2-aminoimidazo[1,2-a]pyridin-6-yl) oxy]-2-fluorophenyl}-1,3-dimethyl-1H-pyrazole-5-carboxamide (70.0 mg, 0.184 mmol) in tetrahydrofuran (3 mL) was added ethyl isocyanate (17.5 μL, 0.221 mmol), and the mixture was stirred at room temperature for 15 hr. The reaction mixture was diluted with water and extracted with ethyl acetate. The organic layer was washed with water and saturated brine, dried over anhydrous magnesium sulfate and filtrated. The filtrate was concentrated under reduced pressure, and the residue was purified by column chromatography (NH silica gel, ethyl acetate) and recrystallized from ethyl acetate-ethanol to give the title compound (21.0 mg, 25%) as a white solid.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with water and saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. filtrationfiltrated
  5. concentrationThe filtrate was concentrated under reduced pressure
  6. customthe residue was purified by column chromatography (NH silica gel, ethyl acetate)
  7. customrecrystallized from ethyl acetate-ethanol

Sources & evidence

ORD record
ord-d62fd1dd37054d1abc84c8a5dfedff5e
Source dataset
uspto-grants-2012_11
Patent number
US08304557B2

Reaction notes

Loading…