反应详情

温度

65 °C

To a solution of 4-methyl-5-phenyl-4H-1,2,4-triazole-3-carbaldehyde, 36, (0.41 g, 2.20 mmol) in 1,2-dichloroethane (4 mL) was added tert-butyl 4-(5,6,7,8-tetrahydroquinolin-8-ylamino)butylcarbamate, 3, (0.76 g, 2.40 mmol), sodium triacetoxyborohydride (0.84 g, 3.95 mmol), and AcOH (10 drops). The reaction mixture was heated to 65° C. and stirred for 18 h. The reaction mixture was cooled to room temperature and poured into saturated aqueous NaHCO3 (15 mL) and extracted with ethyl acetate (2×10 mL). The combined organic phases were washed with brine then dried over MgSO4, filtered, and concentrated in vacuo. The crude material was purified by silica gel chromatography (0-5% methanol/dichloromethane) to yield 37: 1H NMR (400 MHz, CDCl3) δ 8.40, (d, J=5.2 Hz, 1H), 7.60-7.57 (m, 2H), 7.48-7.44, (m, 3H), 7.31, (d, J=7.2 Hz, 1H), 7.0, (dd, J=8.0, 5.2 Hz, 1H), 5.01, (bs, 1H), 4.20-3.92, (m, 3H), 3.20-2.60, (m, 6H), 2.20-1.85, (m, 4H), 1.75-1.30 (m, 13H); ESI+ MS: m/z (rel intensity) 491 (100, M+H).

1. temperatureThe reaction mixture was cooled to room temperature
2. extractionextracted with ethyl acetate (2×10 mL)
3. washThe combined organic phases were washed with brine
4. dry with materialthen dried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. customThe crude material was purified by silica gel chromatography (0-5% methanol/dichloromethane)