1-(2-ethoxyethyl)-3-ethyl-4-nitro-1H-pyrazole-5-carboxamide → 4-amino-1-(2-ethoxyethyl)-3-ethyl-1H-pyrazole-5-carboxamide

Participants

Reaction Steps

1-(2-ethoxyethyl)-3-ethyl-4-nitro-1H-pyrazole-5-carboxamide from step 1 (15.0 g, 58 mmol), 5% Platinum-on-carbon (0.75 g), and isopropyl acetate (150 mL) were combined and the mixture was stirred under 80 psi of hydrogen for about 50 hours. The mixture was then filtered through celite, the celite was rinsed with acetonitrile, and the filtrate was concentrated. The material eventually crystallized to give 13.7 g as a hydrate of the title compound.

Provenance & Evidence