反应详情

A solution of aqueous 2N NaOH (2.00 ml) is added to a stirred solution of methyl 3-[[6-(4-hydroxy-1-piperidyl)-3-methyl-pyridine-2-carbonyl]amino]-2,4-dimethyl-benzoate (0.21 g, 0.52 mmol) in THF:MeOH (3 ml:1 ml). After 16 h at ambient temperature, the organic solvent is removed under reduced pressure and the residue is diluted with water, acidified to pH 6 with aqueous 1N HCl, and extracted with ethyl acetate (2×20 ml). The organic layers are combined and dried over anhydrous sodium sulfate. The solvent is removed under reduced pressure and the resulting precipitate is triturated with pentane and filtered to afford the title compound as a white solid (0.082 g, 39%). Mass spectrum (m/z): 384.2 (M+1).

1. customthe organic solvent is removed under reduced pressure
2. additionthe residue is diluted with water
3. extractionextracted with ethyl acetate (2×20 ml)
4. dry with materialdried over anhydrous sodium sulfate
5. customThe solvent is removed under reduced pressure
6. customthe resulting precipitate is triturated with pentane
7. filtrationfiltered