反应详情

Into a Parr hydrogenation bottle was added 2-BOC-hydrazino-5-nitropyridine (1 equivalent), 1(7% palladium on charcoal (0.3 gm Pd/gm of pyridine) and ethanol (100 ml/gm of pyridine). The reaction was hydrogenated at 50 psi H2 for 2 hours at room temperature on a Parr hydrogenator. The reaction mixture was filtered through a filter cell plug and rinsed with ethanol. The yellow green solution was concentrated under reduced pressure to give a pale yellow solid. The product was recrystallized from ethanol; yield 81.64%; m.p. 140°-142°. IR (KBr): 3360, 3200, 2980, 1650, 1635, 1580, 1490, 1390, 1360, 1300, 1260, 1160, 1020, 880, 860, 830, 750, 590, 530 cm-1.

1. filtrationThe reaction mixture was filtered through a filter cell plug
2. washrinsed with ethanol
3. concentrationThe yellow green solution was concentrated under reduced pressure
4. customto give a pale yellow solid
5. customThe product was recrystallized from ethanol