Tetrahydrofuran → 1,3-dimethyl-N-{2-methyl-5-[(2-{[(2-methylcyclopropyl)carbonyl]amino}imidazo[1,2-b]pyridazin-6-yl)oxy]phenyl}-1H-pyrazole-5-carboxamide

Participants

Reaction Steps

In the same manner as in Example 279 and using 2-methylcyclopropanecarboxylic acid (97 mg, 0.97 mmol), tetrahydrofuran (1.5 mL), N,N-dimethylformamide (1 drop), oxalyl chloride (83 μL, 0.97 mmol), N-{5-[(2-aminoimidazo[1,2-b]pyridazin-6-yl)oxy]-2-methylphenyl}-1,3-dimethyl-1H-pyrazole-5-carboxamide hydrochloride (200 mg, 0.48 mmol) and N,N-dimethylacetamide (5 mL) as starting materials, the title compound (155 mg, 70%) was obtained as a white solid.

Provenance & Evidence