Water → HCID 135848012, compound

Participants

Reaction Steps

To a stirred solution of 1-(4-[[tert-butyl(dimethyl)silyl]oxy]-3-ethylphenyl)-4,4,4-trifluoro-1,3-butanedione (749 mg, 2.0 mmol) in ethanol (25 ml) was added (2-fluoro-4-methylsulfonylphenyl)hydrazine hydrochloride (530 mg, 2.2 mmol), and the mixture was heated at reflux temperature for 16 hours. The reaction mixture was cooled down to room temperature, and poured into water. The whole was extracted with ethyl acetate. The organic layer was washed with brine, dried over MgSO4, and concentrated in vacuo. The residue was dissolved in THF (5 ml). Tetrabutylammonium fluoride (1.0 M solution in THF; 2.5 ml, 2.5 mmol) was added, and the mixture was stirred for 1 hour. Then, the reaction mixture was poured into water. The whole was extracted with ethyl acetate. The organic layer was washed with brine, dried over MgSO4, and concentrated in vacuo. The residue was purified by flash chromatography eluting with ethyl acetate-hexane (1:2) to give title compound (140 mg, 16% yield).

Provenance & Evidence