反应详情

To a solution of 2-[1-(tert-butoxycarbonyl)piperidin-4-yl]-4,6-bis(4-fluorophenyl)-5-(4-pyridyl)pyrazolo[3,4-b]pyridine (0.62 g, 1.1 mmol, obtained in example 20) in CH2Cl2 (19 mL) under argon atmosphere and cooled to 0° C., trifluoroacetic acid (1.8 mL) was added. It was stirred at room temperature for 2.5 h. The solvent was evaporated. The residue was dissolved in CHCl3 and washed with 1 N NaOH and brine. The organic phase was dried over Na2SO4 and concentrated to dryness, to afford 319 mg of the title compound (yield: 62%).

1. customThe solvent was evaporated
2. dissolutionThe residue was dissolved in CHCl3
3. washwashed with 1 N NaOH and brine
4. dry with materialThe organic phase was dried over Na2SO4
5. concentrationconcentrated to dryness