HCID 136348805, compound → HCID 59707161, compound

Participants

Reaction Steps

Heat at reflux for 1 hour 3-{1-[(2-fluoro-phenyl)-hydrazono]-ethyl}-4-hydroxy-6-methyl-pyran-2-one (0.045 g, 0.163 mmol) in acetic acid (0.3 ml). Add heptane (3 ml) and evaporate the mixture to dryness to give 1-[1-(2-fluoro-phenyl)-3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-4-yl]-butane-1,3-dione (0.045 g, 0.163 mmol). Use this material for the next step without further purification.

Provenance & Evidence