N-Acetylimidazolidinone → HCID 71252603, compound

Participants

Reaction Steps

Using (6-chloropyridazin-3-yl)[4-(5-cyclopropyl-3-methylpyridin-2-yl)piperazin-1-yl]methanone (179 mg) described in Preparation Example 233 and 1-acetylimidazolidin-2-one (64 mg) and by the reaction and treatment in the same manner as in Example 511, 1-acetyl-3-{6-[4-(5-cyclopropyl-3-methylpyridin-2-yl)piperazine-1-carbonyl]pyridazin-3-yl}imidazolidin-2-one was obtained as a crude product (170 mg). Methanol (1.2 mL) and 1N aqueous sodium hydroxide solution (0.57 mL) were added to the obtained crude product (170 mg) of 1-acetyl-3-{6-[4-(5-cyclopropyl-3-methylpyridin-2-yl)piperazine-1-carbonyl]pyridazin-3-yl}imidazolidin-2-one, and the mixture was stirred at 40° C. for 1 hr. After cooling, water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The solvent was evaporated, and the residue was purified by column chromatography (ethyl acetate:methanol) to give the title compound (48 mg).

Provenance & Evidence