6-(5-Fluoro-2-methylphenyl)-1-(3-fluoro-2-nitrophenyl)-6-methyl-4-trifluoromethylhept-1-yn-4-ol → 1-(2-Amino-3-fluorophenyl)-6-(5-fluoro-2-methylphenyl)-6-methyl-4-trifluoromethylhept-1-yn-4-ol

Participants

Reaction Conditions

Reaction Steps

A stirred solution of 6-(5-fluoro-2-methylphenyl)-1-(3-fluoro-2-nitrophenyl)-6-methyl-4-trifluoromethylhept-1-yn-4-ol (1.05 g, 2.4 mmol) in 6 mL of absolute ethanol and 2 mL of glacial acetic acid was treated with iron powder (800 mg, 14.3 mmol). The resulting mixture was heated at 80° C. for 2 hours, cooled to room temperature, diluted with diethyl ether, filtered through a pad of CELITE® filter aid, and concentrated in vacuo. The residue was dissolved in diethyl ether, treated with anhydrous potassium carbonate, filtered, and concentrated in vacuo to give 900 mg of 1-(2-amino-3-fluorophenyl)-6-(5-fluoro-2-methylphenyl)-6-methyl-4-trifluoromethylhept-1-yn-4-ol as a light brownish oil (92% yield), which was used without purification.

Provenance & Evidence