1,3-dimethyl-N-{3-[(5-nitropyridin-2-yl)oxy]phenyl}-1H-pyrazole-5-carboxamide → N-{3-[(5-aminopyridin-2-yl)oxy]phenyl}-1,3-dimethyl-1H-pyrazole-5-carboxamide

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반응 단계

To a solution of 1,3-dimethyl-N-{3-[(5-nitropyridin-2-yl)oxy]phenyl}-1H-pyrazole-5-carboxamide (2.26 g, 6.40 mmol) in methanol (20 mL) was added palladium carbon (50% water-containing product, 200 mg), and the mixture was stirred under a hydrogen atmosphere at room temperature for 5 hr. The reaction mixture was filtered through celite, and the filtrate was concentrated under reduced pressure. The residue was collected by filtration and washed with ethyl acetate-hexane to give the title compound (1.77 g, 86%) as a white solid.

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