Ethanol, reaction products with ammonia, distn. residues → 2-(2-Ethyl-8,9-dihydrofuro[3,2-c]pyrazolo[1,5-a]pyridin-1-yl)propan-1-amine

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Reaction Steps

A mixture of 2-(2-ethyl-8,9-dihydrofuro[3,2-c]pyrazolo[1,5-a]pyridin-1-yl)propanenitrile (185 mg, 0.767 mmol), Raney cobalt (1.9 g) and 2M ammonia/ethanol solution (15 mL) was stirred at room temperature for 12 hr under a hydrogen atmosphere, and further stirred at 40° C. for 3 hr. The catalyst was filtered through celite, and the filtrate was concentrated under reduced pressure to give the title compound (185 mg, yield 98%).

Provenance & Evidence