Sodium Nitrite → HCID 54509475, compound

Participants

Reaction Steps

A solution of sodium nitrite (0.19 g) in 5 ml of water was added dropwise to a stirred solution of 1-methyl-5-sulfamoylpyrazole-4-carbohydrazide (0.55 g) in 8 ml of 1M hydrochloric acid at 0° C. The resulting mixture was stirred for 15 min and then filtered. The filter cake was washed with water and dried in vacuum to give 0.29 g (47%) of the title compound as a crystalline solid. The product was pure according to TLC (ethyl acetate) and was used immediately for the next step.

Provenance & Evidence