反应详情

To a one-neck-flask charged with 2-acetylfuran (5.51 g, 50 mmol) in DMF (40 ml) at 0° C., was added N-Bromosuccinimide (9.79 g, 55.0 mmol) portionwise with stirring. The reaction mixture was stirred at rt overnight. The reaction mixture was poured into water (400 mL), extracted with ether (150 mL×3). The combined organic layers was dried, concentrated and purified on a silica gel column (Hexanes:EtOAc=4:1) to afford a white solid GC-4-89 (3 g, 31.7%). 1H-NMR (400 MHz, CDCl3) δ: 7.12 (d, J=3.6 Hz, 1H), 6.49 (d, J=3.2 Hz, 1H), 2.46 (s, 3H)

1. stirringThe reaction mixture was stirred at rt overnight
2. extractionextracted with ether (150 mL×3)
3. customThe combined organic layers was dried
4. concentrationconcentrated
5. custompurified on a silica gel column (Hexanes:EtOAc=4:1)
6. customto afford a white solid GC-4-89 (3 g, 31.7%)