Sodium Hydroxide → N-{3-[(2-aminoimidazo[1,2-b]pyridazin-6-yl)oxy]phenyl}cyclopropanecarboxamide

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Reaction Steps

A mixture of N-{3-[(2-acetamidoimidazo[1,2-b]pyridazin-6-yl)oxy]phenyl}cyclopropanecarboxamide (465 mg, 1.32 mmol), 4N hydrochloric acid-ethyl acetate solution (10 mL) and methanol (10 mL) was stirred at room temperature for 14 hr. The reaction mixture was neutralized by the addition of 8N aqueous sodium hydroxide solution, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and filtrated. The solvent was evaporated under reduced pressure, and the residue was washed with ethyl acetate/diisopropyl ether to give the title compound (376 mg, 92%) as a pale-green powder.

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