Phenylhydrazine → Mci-186

Participants

Reaction Steps

Into 50 ml of ethanol, 13.0 g of ethyl acetoacetate and 10.8 g of phenylhydrazine were added, and the mixture was refluxed under stirring for 3 hours. After left to cool, the precipitated crystals were filtered and recrystallized from ethanol to obtain 11.3 g of 3-methyl-1-phenyl-2-pyrazolin-5-one (Compound No. 1) as colorless crystals.

Provenance & Evidence