Hydrazine hydrate (1:1) → HCID 178434194, compound

Participants

Reaction Steps

A solution of 5-(3-chlorothiophen-2-yl)-2-(1-hydroxyethylidene)-cyclohexane-1,3-dione (2.2 g) and hydrazine hydrate (0.45 g) in ethanol (60 ml) was refluxed for 2 hours. Under reduced pressure, the solvent was evaporated, and the residue was recrystallized from ethyl acetate-hexane to give colorless crystals of 6-(3-chlorothiophen-2-yl)-3-methyl-4,5,6,7-tetrahydroindazol-4-one (1.3 g).

Provenance & Evidence