Tetrabutylammonium Fluoride → Methyl 4-[[5-(4-hydroxy-1-piperidyl)-2-(trifluoromethyl)benzoyl]amino]-3,5-dimethyl-benzoate

Participants

Reaction Steps

To a solution of methyl 4-[[5-[4-[tert-butyl(dimethyl)silyl]oxy-1-piperidyl]-2-(trifluoromethyl)benzoyl]amino]-3,5-dimethyl-benzoate (0.10 g, 177.08 moles) in THF (4 ml) is added Bu4NF 1.0 M in THF (1.0 ml) at 0° C. The reaction mixture is gradually warmed to ambient temperature. After 6 hours, the reaction mixture is diluted with ice-water and extracted with ethyl acetate. The organic layers are combined, dried over sodium sulfate, filtered, and concentrated under reduced pressure to give a residue. The residue is purified by flash chromatography (silica gel) over a gradient using 40-60% ethyl acetate in hexanes to afford the title compound as a light yellow solid (0.06 g, 81.5%). Mass spectrum (m/z): 451.2 (M+1).

Provenance & Evidence