Hydrazine hydrate (1:1) → 5-amino-3-((4-isopropylphenyl)amino)-1H-pyrazole-4-carboxamide

Participants

Reaction Conditions

Reaction Steps

2-cyano-3-((4-isopropylphenyl)amino)-3-(methylthio)acrylamide (1.360 g) was suspended in 15 mL of ethanol and hydrazine hydrate (360 μL, 1.5 eq.) was added drop wise to the reaction. Reaction was then heated at 75° C. until the starting material was no longer present and confirmed via HPLC. Once starting material was absent (18 hrs), reaction was brought to room temperature and filtered to obtain 5-amino-3-((4-isopropylphenyl)amino)-1H-pyrazole-4-carboxamide as an off white to yellow powder. The product was allowed to dry under vacuum for 1 hr (850 mg, 66% yield).

Provenance & Evidence