Water → 1-(2-Phenylcyclopropyl)-3-{6-[4-(2-trifluoromethylbenzoyl)piperazin-1-YL]pyridazin-3-YL}urea

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Reaction Conditions

Reaction Steps

To a solution of [4-(6-aminopyridazin-3-yl)piperazin-1-yl](2-trifluoromethyl-phenyl)methanone (123 mg, 0.35 mmol) in DMF (20.0 mL) was added (2-isocyanatocyclopropyl)benzene (111 mg, 0.7 mmol). The mixture was stirred at 60° C. overnight. After cooling, the mixture was poured into water (120 mL). The white solid, which precipitated, was filtered off and dried in vacuum to give the title product (162 mg) as a white solid in 90% yield. 1H NMR (300 MHz, CDCl3) δ 8.01-7.97, 7.73, 7.60, 7.55, 7.32, 7.22-7.10, 7.06, 4.00-3.95, 3.87-3.86, 3.62-3.52, 3.43-3.41, 3.25-3.22, 2.85-2.82, 2.14-2.10, 0.91-0.86. MS (ES+) m/z 511.2 (M+1).

Provenance & Evidence