Triethylamine → N-[5-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)-2-methylphenyl]-2-methyl-1,3-thiazole-4-carboxamide

HRID 1668073Notes

Reaction equation

HRID 1668073 reaction equation
[CH3:1][C:2]1[S:3][CH:4]=[C:5]([C:7]([OH:9])=O)[N:6]=1.[NH2:10][C:11]1[CH:12]=[C:13]([CH:30]=[CH:31][C:32]=1[CH3:33])[O:14][C:15]1[CH:16]=[CH:17][C:18]2[N:19]([CH:21]=[C:22]([NH:24][C:25]([CH:27]3[CH2:29][CH2:28]3)=[O:26])[N:23]=2)[N:20]=1.ON1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C.C(N(CC)CC)C>CN(C)C=O>[CH:27]1([C:25]([NH:24][C:22]2[N:23]=[C:18]3[CH:17]=[CH:16][C:15]([O:14][C:13]4[CH:30]=[CH:31][C:32]([CH3:33])=[C:11]([NH:10][C:7]([C:5]5[N:6]=[C:2]([CH3:1])[S:3][CH:4]=5)=[O:9])[CH:12]=4)=[N:20][N:19]3[CH:21]=2)=[O:26])[CH2:28][CH2:29]1

Participants

7

Reactant 5

HCID 8471TriethylamineHCID 757711-HydroxybenzotriazoleHCID 2847282-Methyl-1,3-thiazole-4-carboxylic acidHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 57505476N-[6-(3-amino-4-methylphenoxy)imidazo[1,2-b]pyridazin-2-yl]cyclopropanecarboxamide

Product 1

HCID 57505621N-[5-({2-[(cyclopropylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)-2-methylphenyl]-2-methyl-1,3-thiazole-4-carboxamideYield 62%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of 2-methyl-1,3-thiazole-4-carboxylic acid (120 mg, 0.84 mmol), N-[6-(3-amino-4-methylphenoxy)imidazo[1,2-b]pyridazin-2-yl]cyclopropanecarboxamide (210 mg, 0.65 mmol), 1-hydroxybenzotriazole (110 mg, 0.84 mmol), 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (160 mg, 0.84 mmol), triethylamine (85 mg, 0.84 mmol) and N,N-dimethylformamide (5 mL) was stirred at room temperature for 16 hr. The solvent was evaporated under reduced pressure, ethyl acetate/tetrahydrofuran and water were added to the residue, and the aqueous layer was extracted with ethyl acetate/tetrahydrofuran (×4). Combined organic layer was washed with saturated brine, dried over anhydrous sodium sulfate, and filtrated. The filtrate was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate/hexane=40/60→100/0) to give the title compound (180 mg, 62%) as a white solid.

Workup

  1. customThe solvent was evaporated under reduced pressure, ethyl acetate/tetrahydrofuran and water
  2. additionwere added to the residue
  3. extractionthe aqueous layer was extracted with ethyl acetate/tetrahydrofuran (×4)
  4. washCombined organic layer was washed with saturated brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. filtrationfiltrated
  7. concentrationThe filtrate was concentrated under reduced pressure
  8. customthe residue was purified by silica gel column chromatography (ethyl acetate/hexane=40/60→100/0)

Sources & evidence

ORD record
ord-62bdcb35d72d4837a1669ab5c0e7697a
Source dataset
uspto-grants-2011_10
Patent number
US08044049B2

Reaction notes

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