Water → 4-Bromo-2-chloro-1-(difluoromethoxy)benzene

Beteiligte Stoffe

Reaktionsschritte

4-Bromo-2-chlorophenol (1.0 g, 4.8 mmol) was dissolved in DMF (35 mL) and water (5 mL) was added followed by sodium chloro(difluoro)acetate (2.0 g, 12 mmol) and cesium carbonate (3.1 g, 9.6 mmol). The mixture was stirred for 15 minutes at room temperature and then heated to 100° C. for 2 hours under nitrogen. The mixture was partitioned between water (50 mL) and TBME (50 mL). The organic phase was separated, washed brine, dried over sodium sulphate, filtered, and concentrated in vacuo. The resulting crude product was purified by silica gel chromatography eluting with 0 to 30% EtOAc in heptane to afford the title compound as colourless oil (0.83 g, 67%).

Herkunft & Nachweise