反应详情

To a solution of 5-Bromo-3-fluoro-2-hydroxy-benzaldehyde (5 g, 22.8 mmol) in DMF (100 ml) is added benzyl bromide (5.7 ml, 48 mmol) and cesium carbonate (11.9 g, 37 mmol). The reaction mixture is stirred at room temperature for 20 hours then diluted with water (150 ml) and extracted with EtOAc (2×150 ml), the organic portions are combined, washed with brine (50 ml), dried over MgSO4 and concentrated in vacuo to give a waxy off-white solid. The solid is stirred in iso-hexanes (30 ml) for 30 minutes, filtered and dried under vacuum to afford the title compound.

1. extractionextracted with EtOAc (2×150 ml)
2. washwashed with brine (50 ml)
3. dry with materialdried over MgSO4
4. concentrationconcentrated in vacuo
5. customto give a waxy off-white solid
6. filtrationfiltered
7. customdried under vacuum