Hydrazine hydrate (1:1) → HCID 21515529, compound

Participants

Reaction Steps

28.8 g (0.1 mol) of phenylglyoxylic acid methyl ester-2-hexahydrobenzoylhydrazone and 10 g of hydrazine hydrate (0.2 mol) were stirred in 100 ml of pyridine, which had been dried over potassium hydroxide, for 45 minutes at 100°C and the mixture was subsequently cooled. Thereupon, the mixture solidifed to a paste. 100 ml of water were added and the whole was stirred for some hours and the product filtered off. After washing with water and drying, 5.3 g (19.7% of theory) of 3-cyclohexyl-4-amino-6-phenyl-5-H-1,2,4-triazin-5-one were obtained in colorless flakes of melting point 178°-180°C.

Provenance & Evidence