Acetic Acid → HCID 14838482, compound

Participants

Reaction Steps

The title pyrazole of Example 3 (6.3 g) was heated on a steam bath in a mixture of aqueous HBr (48%, 200 ml) and glacial acetic acid (25 ml) for 6 hours. The reaction mixture was cooled, poured into water, neutralised with sodium bicarbonate, extracted with ethyl acetate, washed with brine, dried and evaporated to give after chromatography the title compound, 1.0 g, mp 114°-116° (from cyclohexane/ethyl acetate).

Provenance & Evidence