反应详情

To a solution of ethyl 3-(2-fluoro-4-{[4-({5-(2-phenylethyl)-3-[4-(trifluoromethyl)phenyl]-1H-pyrazol-1-yl}methyl)benzyl]amino}phenyl)propanoate in ethanol (10 mL) and tetrahydrofuran (10 mL) was added 1 M aqueous sodium hydroxide solution (4 mL), and the mixture was stirred at room temperature for 2 hr. The reaction mixture was poured into water, and the mixture was weakly acidified with 10% aqueous citric acid solution and extracted with ethyl acetate. The ethyl acetate layer was dried using a Presep Dehydration tube (manufactured by Wako Pure Chemical Industries, Ltd.), and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (20%-80% ethyl acetate/hexane) to give the title compound (620 mg, yield 51%, 2 steps) as a yellow oil.

1. extractionextracted with ethyl acetate
2. dry with materialThe ethyl acetate layer was dried
3. concentrationconcentrated under reduced pressure
4. customThe residue was purified by silica gel column chromatography (20%-80% ethyl acetate/hexane)