Dimethylformamide → N-(5-{[2-(acetylamino)imidazo[1,2-b]pyridazin-6-yl]oxy}-2-fluorophenyl)-3-ethyl-1-methyl-1H-pyrazole-5-carboxamide

Participants

Reaction Steps

Using 3-ethyl-1-methyl-1H-pyrazole-5-carboxylic acid (215 mg, 1.39 mmol), tetrahydrofuran (4.5 mL), N,N-dimethylformamide (30 μL, 0.39 mmol), oxalyl chloride (122 μL, 1.39 mmol), N-[6-(3-amino-4-fluorophenoxy)imidazo[1,2-b]pyridazin-2-yl]acetamide (300 mg, 1.00 mmol) and N,N-dimethylacetamide (6.0 mL), and in the same manner as in Example 238, the title compound (219 mg, 50%) was obtained as a white powder.

Provenance & Evidence