反应详情

温度

85 °C

A mixture of 3,4-difluorophenol (2 g, 15.37 mmol), 3-chloro-2-methylpropene (1.66 mL, 16.91 mmol), and potassium carbonate (3.2 g, 23.06 mmol) in DMF (10 mL) was stirred at 85° C. for 6 h. The mixture was filtered and the filtrate was evaporated to dryness. The residue was purified by flash column chromatography eluting with hexanes-EtOAc (2:1) to provide 1,2-difluoro-4-(2-methylallyloxy)benzene (731) (1.78 g, 63%). 1H NMR (400 MHz, CDCl3) δ 7.05 (q, J=9.5 Hz, 1H), 6.76-6.71 (m, 1H), 6.63-6.60 (m, 1H), 5.07 (s, 1H), 5.00 (s, 1H), 4.38 (s, 2H), 1.82 (s, 3H).

1. filtrationThe mixture was filtered
2. customthe filtrate was evaporated to dryness
3. customThe residue was purified by flash column chromatography
4. washeluting with hexanes-EtOAc (2:1)