反应详情

温度

80 °C

To 2-bromo-2,2-difluoro-N-(4-fluoro-2-hydroxyphenyl)acetamide (33 g, 116 mmol) in dry toluene was added 1,8-diazabicyclo[5.4.0]undec-7-en (DBU, 17.51 ml, 116 mmol). The resulting mixture was stirred overnight at 80° C. The reaction was quenched in saturated aqueous NH4Cl solution and extracted with ethyl acetate. The combined extracts were washed with brine, dried with Na2SO4 and concentrated to afford 24.94 g of the title compound.

1. customThe reaction was quenched in saturated aqueous NH4Cl solution
2. extractionextracted with ethyl acetate
3. washThe combined extracts were washed with brine
4. dry with materialdried with Na2SO4
5. concentrationconcentrated