Hydrochloric Acid → 6-(3,5-difluorophenyl)-2-{3-[5-(1-piperidin-4-yl-1H-pyrazol-4-yl)oxazol-2-yl]benzyl}-2H-pyridazin-3-one hydrochloride

Participants

Reaction Steps

A solution of 90.4 mg (0.147 mmol) of tert-butyl 4-[4-(2-{3-[3-(3,5-difluorophenyl)-6-oxo-6H-pyridazin-1-ylmethyl]phenyl}oxazol-5-yl)pyrazol-1-yl]piperidine-1-carboxylate in a mixture of 0.22 ml of 4 N hydrogen chloride in dioxane and 0.23 ml of methanol is stirred at room temperature for 16 hours. The solution is evaporated and dried in vacuo, giving 6-(3,5-difluorophenyl)-2-{3-[5-(1-piperidin-4-yl-1H-pyrazol-4-yl)oxazol-2-yl]benzyl}-2H-pyridazin-3-one hydrochloride as colourless crystals; ESI 515.

Provenance & Evidence