3-Amino-5-methylisoxazole → 5-Acetyl-2-ethyl-4-[(5-methylisoxazol-3-yl)amino]-6-phenylpyridazin-3(2H)-one

Participants

Reaction Steps

To a stirred solution of 80 mg (0.278 mmol) of 5-acetyl-2-ethyl nitro-6-phenylpyridazin-3(2H)-one (Dal Piaz, V et al., J. Med. Chem. 1997, 40, 1417) in ethanol (4 mL), 3-amino-5-methylisoxazol (96 mg, 0.978 mmol) was added. The resulting mixture was stirred, at room temperature for four days and the final product was collected by filtration and washed with diethylether to yield the title compound (35 mg, 37.2% yield).

Provenance & Evidence