反应详情

温度

80 °C

To a stirring degassed solution of N,N-diethyl-4-bromo-2-(trifluoromethoxy)benzamide (2768 mg, 8.2 mmol), bis(pinacolato)diboron (2281 mg, 9.0 mmol), and potassium acetate (2402 mg, 24.5 mmol) in dry DMF (60 mL) was added palladium(II) acetate (55 mg, 0.25 mmol). The reaction was heated to 80° C. for 2 h and then cooled to room temp. The reaction was quenched with water and extracted with EtOAc (3×75 mL). The organic layers were combined, dried over Na2SO4, and conc. in vacuo to a brown oil. The oil was dissolved in THF (40 mL) and acetic acid (2.0 mL) and treated with hydrogen peroxide (8 mL). The reaction was stirred for 15 min and then quenched with st. aq. NaHSO3. The reaction was extracted with EtOAc (3×40 mL). The organic layers were combined, dried over Na2SO4, and conc. in vacuo to a brown oil. The oil was purified by flash chromatography (silica gel, 20-70% EtOAc in hexanes) to give 1876 mg of the desired product as a white solid. MS (ESI) 278 (M+H).

1. temperaturecooled to room temp
2. customThe reaction was quenched with water
3. extractionextracted with EtOAc (3×75 mL)
4. dry with materialdried over Na2SO4
5. dissolutionThe oil was dissolved in THF (40 mL)
6. additionacetic acid (2.0 mL) and treated with hydrogen peroxide (8 mL)
7. customquenched with st
8. extractionThe reaction was extracted with EtOAc (3×40 mL)
9. dry with materialdried over Na2SO4
10. customThe oil was purified by flash chromatography (silica gel, 20-70% EtOAc in hexanes)