反应详情

To a solution of methyl 3-[[6-[3-[[tert-butyl(dimethyl)silyl]oxymethyl]-1-piperidyl]-3-methyl-pyridine-2-carbonyl]amino]-2,4-dimethyl-benzoate (0.20 g, 0.38 mmol) in THF (4 ml) is added Bu4NF 1.0 M in THF (1.5 ml) at 0° C. The reaction mixture is gradually warmed to ambient temperature. After 8 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. The resulting residue is purified by flash chromatography (neutral alumina) over a gradient using 50% ethyl acetate in hexane to afford the title compound as a white solid (0.18 g, 115%). Mass spectrum (m/z): 412.2 (M+1).

1. extractionextracted with ethyl acetate
2. dry with materialdried over sodium sulfate
3. filtrationfiltered
4. concentrationconcentrated under reduced pressure
5. customThe resulting residue is purified by flash chromatography (neutral alumina) over a gradient