反应详情

6-Bromo-4-chloroquinoline (1.0 G, 4.1 mmol), morpholine (0.468 g, 5.3 mmol) and K2CO3 (1.0 G, 7.2 mmol) in NMP (5 mL) were heated at 100° C. for 12 h. The reaction mixture was cooled to room temperature, diluted with water (20 mL) and the product was extracted into EtOAc/hexanes (140 mL/60 mL). The organic layer was washed with water (75 mL) and brine (20 mL) successively, dried over MgSO4 and filtered. The filtrate was concentrated and purified by flash column chromatography (Combiflash® companion System® with RediSep® silica gel column 40 g and 30-70% EtOAC/hexanes as an eluting solvent]. The product fractions were concentrated to provide 4-(6-bromoquinolin-4-yl)morpholine (700 mg) as a white solid. 1H NMR (300 MHz, DMSO-d6) δ 8.73 (d, J=5.0 Hz, 1H), 8.13 (d, J=2.2 Hz, 1H), 7.90 (d, J=8.9 Hz, 1H), 7.81 (dd, J=9.0, 2.2 Hz, 1H), 7.06 (d, J=5.0 Hz, 1H), 3.87-3.84 (m, 4H), 3.18-3.02 (m, 4H).

1. extractionthe product was extracted into EtOAc/hexanes (140 mL/60 mL)
2. washThe organic layer was washed with water (75 mL) and brine (20 mL) successively
3. dry with materialdried over MgSO4
4. filtrationfiltered
5. concentrationThe filtrate was concentrated
6. custompurified by flash column chromatography (Combiflash® companion System® with RediSep® silica gel column 40 g and 30-70% EtOAC/hexanes as an eluting solvent]
7. concentrationThe product fractions were concentrated