Water → N-{6-[(4-aminophenyl)thio]imidazo[1,2-b]pyridazin-2-yl}cyclopropanecarboxamide

HRID 2391294Notes

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][CH:15]3C)=[O:13])[N:10]=2)[N:7]=1.C(=O)([O-])[O-].[K+].[K+].[NH2:24][C:25]1[CH:30]=[CH:29][C:28]([SH:31])=[CH:27][CH:26]=1.O>CN(C)C=O>[NH2:24][C:25]1[CH:30]=[CH:29][C:28]([S:31][C:2]2[CH:3]=[CH:4][C:5]3[N:6]([CH:8]=[C:9]([NH:11][C:12]([CH:14]4[CH2:15][CH2:16]4)=[O:13])[N:10]=3)[N:7]=2)=[CH:27][CH:26]=1

Participants

Conditions

Temperature: 80 °C

Procedure

To a solution of N-(6-iodoimidazo[1,2-b]pyridazin-2-yl)-2-methylcyclopropanecarboxamide (2.0 g, 6.10 mmol) in N,N-dimethylformamide (20.0 mL) were added potassium carbonate (1.27 g, 9.14 mmol) and 4-aminothiophenol (0.92 g, 7.31 mmol), and the mixture was stirred at 80° C. for 4 hr. After cooling the mixture to room temperature, water was added to the reaction mixture, and the mixture was extracted with ethyl acetate/tetrahydrofuran, washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was collected by filtration and washed with ethyl acetate to give the title compound (1.53 g, 77%) as brown crystals.

Workup

temperatureAfter cooling the mixture to room temperature
extractionthe mixture was extracted with ethyl acetate/tetrahydrofuran
washwashed with saturated brine
dry with materialdried over anhydrous magnesium sulfate
customThe solvent was evaporated under reduced pressure
filtrationthe residue was collected by filtration
washwashed with ethyl acetate

Sources & evidence

ORD record: ord-9d848b7d6fca461f9f4b4c97128a2586
Source dataset: uspto-grants-2012_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08273741B2

Reaction notes

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