Acetic Anhydride → HCID 22916761, compound

Participants

Reaction Steps

Formic acid (2.09 ml) was added to acetic anhydride (4.17 ml) at room temperature and the mixture was stirred for 30 minutes at the same temperature. 5-Carbamoylamino-1-(2-hydroxyethyl)pyrazole (3.76 g) was added thereto under stirring and ice-cooling. The mixture was stirred for 2 hours at room temperature. The reaction mixture was evaporated in vacuo and diisopropyl ether was added thereto to give 5-carbamoylamino-1-(2-formyloxyethyl)pyrazole (4.15 g).

Provenance & Evidence