Hydrochloric Acid → HCID 178518526, compound

Participants

Reaction Steps

To a mixture of 4-hydroxy-2-mercapto-8-phenylpyrazolo[1,5-a]-1,3,5-triazine (130 mg), 0.25N sodium hydroxide solution (4 ml) and methanol (3 ml) is with stirring added 30% hydrogen peroxide (1 ml) under ice cooling. The mixture is reacted for one hour, and the reaction mixture is adjusted to pH 1-2 with conc. hydrochloric acid. The resulting precipitate is separated by filtration, washed with water and methanol and dried to give the title compound (25.8 mg).

Provenance & Evidence