反应详情

温度

0 °C

To a cooled (0° C.) stirred mixture of ethyl 5-(benzyloxy)-6-((tert-butoxycarbonyl)amino)nicotinate (1.2 g, 0.0032 mol) in EtOH:water (1:1, 12 mL), was added LiOH (154 mg, 0.0064 mol, Aldrich). The reaction mixture was stirred for 2 h at room temperature. After completion of the reaction (monitored by TLC, 100% EtOAc), the reaction mixture was quenched with 1N HCl at 0° C. temperature and extracted with EtOAc (2 mL×3). The combined organic layers were dried over anhydrous sodium sulfate and concentrated under reduced pressure to give the title compound. 1H NMR (400 MHz, DMSO-d6) δ: 13.24 (s, 1H), 9.18 (s, 1H), 8.45 (d, J=1.2 Hz, 1H), 7.80 (d, J=1.5, Hz, 1H), 7.53 (d, J=5.4 Hz, 2H), 7.41-7.34 (m, 2H), 5.24 (s, 2H), 1.38 (s, 9H).

1. stirringThe reaction mixture was stirred for 2 h at room temperature
2. customthe reaction mixture was quenched with 1N HCl at 0° C. temperature
3. extractionextracted with EtOAc (2 mL×3)
4. dry with materialThe combined organic layers were dried over anhydrous sodium sulfate
5. concentrationconcentrated under reduced pressure