反应详情

(E)-2-Methoxy-4-styrylpyridine (22.15 g, 104.8 mmol) was dissolved in MeOH (400 mL) and degassed with a nitrogen stream for 10 minutes. Palladium on charcoal (10%, wet, 5 g) was added and the reaction mixture was stirred under an atmosphere of hydrogen for 24 h. The reaction mixture was degassed again, and the catalyst was removed by filtration. Concentration of the filtrate provided the title compound (22 g, 98%) as a green oil: 1H NMR (500 MHz, CDCl3) δ 8.04 (d, J=5.3 Hz, 1H), 7.29-7.24 (m, 2H), 7.21-7.15 (m, 3H), 6.69-6.67 (m, 1H), 6.54 (s, 1H), 3.91 (s, 3H), 2.91-2.89 (m, 2H), 2.87-2.84 (m, 2H).

1. customdegassed with a nitrogen stream for 10 minutes
2. additionPalladium on charcoal (10%, wet, 5 g) was added
3. customThe reaction mixture was degassed again
4. customthe catalyst was removed by filtration