反应详情

To a solution of 2-amino-5-phenyl-pyridin-3-ol (2.04 g, 10.95 mmol) in THF (anhydrous, 30 mL) was added NaH (1.31 g, 32.85 mmol) slowly. The mixture was stirred under nitrogen for 20 minutes, and then trityl chloride (3.66 g, 13.14 mmol) was added. The reaction was stirred at room temperature for over night under nitrogen. The solvent was evaporated, and the residue was dissolved in dichloromethane, washed with water, and dried over Na2SO4. After filtration and condensation, the crude product was purified on a silica gel column eluting with EtOAc-Hexane (1:10) to provide 5-phenyl-2-(trityl-amino)-pyridin-3-ol (1.09 g, 23% yield). MS m/z 427 [M+1].

1. stirringThe reaction was stirred at room temperature for over night under nitrogen
2. customThe solvent was evaporated
3. dissolutionthe residue was dissolved in dichloromethane
4. washwashed with water
5. dry with materialdried over Na2SO4
6. filtrationAfter filtration and condensation
7. customthe crude product was purified on a silica gel column
8. washeluting with EtOAc-Hexane (1:10)