反应详情

A mixture of 4-chlorophenol (94.7 mg, 0.74 mmol), methyl 5-bromo-2,4-difluorobenzoate (Preparation 18, 168 mg, 0.67 mmol), and potassium carbonate (277 mg, 2.01 mmol) in dimethyl sulfoxide (3 mL) was stirred for 16 hours at room temperature under a nitrogen atmosphere. The reaction was diluted with water (30 mL) and extracted with EtOAc (3×20 mL). The combined organic extracts were successively washed with aqueous sodium hydroxide solution (1.0 M, 20 mL), brine (2×30 mL), dried over sodium sulfate, filtered and concentrated in vacuo to afford the title compound as a colourless oil (199 mg, 83%).

1. extractionextracted with EtOAc (3×20 mL)
2. washThe combined organic extracts were successively washed with aqueous sodium hydroxide solution (1.0 M, 20 mL), brine (2×30 mL)
3. dry with materialdried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuo