Potassium Carbonate → ethyl 1-[(2Z)-2-amino-2-hydroxyiminoethyl]pyrazole-4-carboxylate

Participants

Reaction Steps

The compound (1.6 g) obtained in Example 1a was suspended in ethanol (20 mL), and potassium carbonate (10.4 g) and hydroxylamine hydrochloride (5.2 g) were added. The reaction mixture was heated under reflux for 12 hr, and the insoluble material was removed by filtration. The solvent was evaporated under reduced pressure from the obtained filtrate to give the title compound as a bister solid.

Provenance & Evidence