7-[2,6-Dimethoxy-4-(methoxymethyl)phenyl]-2-ethyl-3-nitropyrazolo[1,5-a]pyridine → 7-[2,6-Dimethoxy-4-(methoxymethyl)phenyl]-2-ethylpyrazolo[1,5-a]pyridine-3-amine

Participants

Reaction Conditions

Reaction Steps

A mixture of 7-[2,6-dimethoxy-4-(methoxymethyl)phenyl]-2-ethyl-3-nitropyrazolo[1,5-a]pyridine (850 mg, 2.3 mmol), 10% palladium-carbon (50% wet, 330 mg) and methanol (19 mL) was stirred for 13 hours at 50° C. under a hydrogen atmosphere at atmospheric pressure. After cooling the reaction mixture to room temperature, the reaction mixture was filtered through celite to remove the catalyst. The solvent of the obtained filtrate was evaporated under reduced pressure to afford 3.45 g of the title compound (84% yield).

Provenance & Evidence