反应详情

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.

1. customwas evaporated in vacuo
2. dissolutionThe residue was redissolved in dichloromethane
3. additionAfter addition of triethylamine (1 mL) the solution
4. filtrationwas filtered over a short pad of silicagel
5. washwashed with ethyl acetate:acetone 50:50
6. customEvaporation of the solvent