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

Participants

Reaction Steps

In the same manner as in Example 259 and using 1-methyl-1H-pyrazole-5-carboxylic acid (100 mg, 0.79 mmol), tetrahydrofuran (5 mL), N,N-dimethylformamide (1 drop), oxalyl chloride (89 μL, 1.0 mmol), N-[6-(3-amino-4-fluorophenoxy)imidazo[1,2-b]pyridazin-2-yl]cyclopropanecarboxamide (200 mg, 0.61 mmol) and N,N-dimethylacetamide (7 mL) as starting materials, the title compound (180 mg, 68%) was obtained as a white solid. melting point 253° C.

Provenance & Evidence