Triethylamine → HCID 69426394, compound

Participants

Reaction Steps

A mixture of 3-[5-(4-fluorophenyl)-3-oxo-pentanoyl]-benzonitrile (1.0 g, 3.39 mmol), ethyl hydrazine oxalate (763 mg, 5.08 mmol) and Et3N (709 □L, 5.08 mmol) in EtOH (50 mL) was heated at reflux for 3 hours. The solvent was removed under reduced pressure and the residue was partitioned between EtOAc (100 mL) and H2O (50 mL). The organics were separated, washed with brine (50 mL), concentrated under reduced pressure, and the residue purified by column chromatography on silica eluting with 40% EtOAc/iso-hexanes to yield first 3-{1-ethyl-5-[2-(4-fluorophenyl)-ethyl]-1H-pyrazol-3-yl}-benzonitrile (280 mg, 26%) (by-product) and then 3-{1-ethyl-3-[2-(4-fluorophenyl)-ethyl]-1H-pyrazol-5-yl}-benzonitrile (380 mg, 35%).

Provenance & Evidence