反应详情

Benzyl bromide (2.53 ml, 21.2 mmol) was added to a mixture of methyl 5-bromo-8-hydroxy-1,6-naphthyridine-7-carboxylate (3.0 g; 10.6 mmol) and cesium carbonate (6.9 g; 21.2 mmol) in DMF (30 ml), under stirring at room temperature. The reaction mixture was stirred at room temperature for 12 hours. Water and ethyl acetate were added. The organic phase was separated, washed with water and with a saturated NaCl solution. The organic phase was dried, filtered and concentrated to dryness. The crude material was purified by flash chromatography column over silica gel (eluting with a gradient hexane-ethyl acetate 10:1 to 2:1).

1. stirringThe reaction mixture was stirred at room temperature for 12 hours
2. customThe organic phase was separated
3. washwashed with water and with a saturated NaCl solution
4. customThe organic phase was dried
5. filtrationfiltered
6. concentrationconcentrated to dryness
7. customThe crude material was purified by flash chromatography column over silica gel (
8. washeluting with a gradient hexane-ethyl acetate 10:1 to 2:1)