Ammonium formate → Methyl 4-amino-5-carbamoyl-1-(2-ethoxyethyl)-1h-pyrazole-3-carboxylate

Participants

Reaction Steps

Palladium(II) hydroxide (100 mg) was added to a solution of the nitro compound of Step 3 (970 mg, 3.39 mmol) in methanol (20 mL) and the mixture warmed to reflux. Ammonium formate (1.07 g, 16.97 mmol) was added and the reaction mixture stirred at reflux for 2 hours. The catalyst was removed by filtration through Arbocel® and the reaction mixture concentrated in vacuo to yield the title product.

Provenance & Evidence