1-Hydroxybenzotriazole → N-[5-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)-2-fluorophenyl]-1-methyl-1H-imidazole-2-carboxamide

HRID 1668040Notes

Reaction equation

HRID 1668040 reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]([CH:21]=[CH:22][C:23]=1[F:24])[O:5][C:6]1[CH:7]=[CH:8][C:9]2[N:10]([CH:12]=[C:13]([NH:15][C:16]([CH:18]3[CH2:20][CH2:19]3)=[O:17])[N:14]=2)[N:11]=1.[CH3:25][N:26]1[CH:30]=[CH:29][N:28]=[C:27]1[C:31](O)=[O:32].Cl.C(N=C=NCCCN(C)C)C.ON1C2C=CC=CC=2N=N1.C(=O)([O-])O.[Na+]>CN(C)C=O>[CH:18]1([C:16]([NH:15][C:13]2[N:14]=[C:9]3[CH:8]=[CH:7][C:6]([O:5][C:4]4[CH:21]=[CH:22][C:23]([F:24])=[C:2]([NH:1][C:31]([C:27]5[N:26]([CH3:25])[CH:30]=[CH:29][N:28]=5)=[O:32])[CH:3]=4)=[N:11][N:10]3[CH:12]=2)=[O:17])[CH2:20][CH2:19]1

Participants

7

Reactant 5

HCID 757711-HydroxybenzotriazoleHCID 516892Sodium BicarbonateHCID 5576781-methyl-1H-imidazole-2-carboxylic acidHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 57505446N-[6-(3-amino-4-fluorophenoxy)imidazo[1,2-b]pyridazin-2-yl]cyclopropanecarboxamide

Product 1

HCID 57505591N-[5-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)-2-fluorophenyl]-1-methyl-1H-imidazole-2-carboxamideYield 12%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of N-[6-(3-amino-4-fluorophenoxy)imidazo[1,2-b]pyridazin-2-yl]cyclopropanecarboxamide (200 mg, 0.61 mmol) in N,N-dimethylformamide (4.0 mL) were added 1-methyl-1H-imidazole-2-carboxylic acid (154 mg, 1.22 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (351 mg, 1.83 mmol) and 1-hydroxybenzotriazole (248 mg, 1.83 mmol), and the mixture was stirred at room temperature for 16 hr. Saturated aqueous sodium hydrogencarbonate solution was added to the reaction mixture, and the mixture was extracted with ethyl acetate/tetrahydrofuran, washed with saturated brine, dried over anhydrous sodium sulfate, and filtrated. The solvent was evaporated under reduced pressure, and the obtained residue was purified by silica gel column chromatography (ethyl acetate alone) to give the title compound (31 mg, 12%) as a white powder.

Workup

  1. extractionthe mixture was extracted with ethyl acetate/tetrahydrofuran
  2. washwashed with saturated brine
  3. dry with materialdried over anhydrous sodium sulfate
  4. filtrationfiltrated
  5. customThe solvent was evaporated under reduced pressure
  6. customthe obtained residue was purified by silica gel column chromatography (ethyl acetate alone)

Sources & evidence

ORD record
ord-8950f7d282fe4a649e0b181c8dfc6268
Source dataset
uspto-grants-2011_10
Patent number
US08044049B2

Reaction notes

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