Hydrofluoric Acid → 4-Hydroxy-piperidine-1-carboxylic Acid 5-benzoylamino-pyridin-2-yl Ester
反応式
F.[C:2]([NH:10][C:11]1[CH:12]=[CH:13][C:14]([O:17][C:18]([N:20]2[CH2:25][CH2:24][CH:23]([O:26][Si](C(C)(C)C)(C)C)[CH2:22][CH2:21]2)=[O:19])=[N:15][CH:16]=1)(=[O:9])[C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1>C(#N)C>[C:2]([NH:10][C:11]1[CH:12]=[CH:13][C:14]([O:17][C:18]([N:20]2[CH2:21][CH2:22][CH:23]([OH:26])[CH2:24][CH2:25]2)=[O:19])=[N:15][CH:16]=1)(=[O:9])[C:3]1[CH:4]=[CH:5][CH:6]=[CH:7][CH:8]=1参加物
4
実験手順
hydrofluoric acid (min. 40% in water, 0.50 mL) was added to a stirred solution of 4-(tert-butyl-dimethyl-silanyloxy)-piperidine-1-carboxylic acid 5-benzoylamino-pyridin-2-yl ester (364 mg, 0.77 mmol) in acetonitrile. After stirring overnight at room temperature the solvent was evaporated in vacuo. The residue was redissolved in dichloromethane. After addition of triethylamine (1 mL) the solution was filtered over a short pad of silicagel and washed with ethyl acetate:acetone 50:50. Evaporation of the solvent yielded the title compound (180 mg, 68% yield) as a white solid.