Hydrochloric Acid → HCID 178489312, compound

Participants

Reaction Steps

A mixture of 6-(2-methoxyphenyl)-3-methyl-4,5,6,7-tetrahydroindazol-4-one (0.2 g), aminoguanidine hydrochloride (0.095 g), concentrated hydrochloric acid (0.12 ml), water (0.12 ml) and ethanol (30 ml) was refluxed for 1 hour. Under reduced pressure, the solvent was evaporated, and to the residue was added water. The mixture was washed with ethyl acetate and concentrated under reduced pressure, and the resulting crystals were recrystallized from water-ethanol to give 4-guanidinoimino-6-(2-methoxyphenyl)-3-methyl-4,5,6,7-tetrahydroindazole hydrochloride (Compound 25) (0.3 g) as colorless crystals.

Provenance & Evidence