反应详情

2-(3-pyridyl)phenyl benzyl ether (6.67 g, 25.52 mmol) was dissolved in MeOH (100 mL). Argon was bubbled through this solution for 10 min to remove oxygen. Then Pd/C (350 mg 5 w %) was added, and the reaction mixture was put into the Parr-reactor and shaken for 16 hr under a hydrogen atmosphere at 80 psi. After the hydrogenation, the mixture was filtered over diatomaceous earth, and the colourless solution was evaporated to dryness. The crude product was recrystallized from 2-propanol to yield a white crystalline material (3.54 g, 79%). M.p.=185° C. 1H-NMR (CDCl3/MeOD):δ=8.76 (d, 1H), 8.43 (dd, 1H), 8.02 (dt, 1H), 7.39 (m, 1H), 7.21-7.29 (m, 2H), 6.95 (m, 2H).

1. customArgon was bubbled through this solution for 10 min
2. customto remove oxygen
3. additionThen Pd/C (350 mg 5 w %) was added
4. filtrationAfter the hydrogenation, the mixture was filtered over diatomaceous earth
5. customthe colourless solution was evaporated to dryness
6. customThe crude product was recrystallized from 2-propanol