反应详情

温度

80 °C

A biphasic solution of 6-acetyl-4-chloro-2-cyano-3-methylphenyl trifluoromethanesulfonate (3.07 g, 8.98 mmol) and (3,5-difluorophenyl)boronic acid (1.70 g, 10.8 mmol) in toluene (30 mL)/0.8 M sodium hydrogencarbonate in water (30 mL, 30 mmol) (this was saturated NaHCO3 in water) was degassed with N2. Tetrakis(triphenylphosphine)palladium(0) (0.414 g, 0.359 mmol) was added. The mixture was degassed with N2 for 5 min. and heated at 80° C. for 2 h. After cool to rt, the mixture was diluted with EtOAc. The layers were separated and the aq. layer was extracted with more EtOAc. The combined extracts were washed with brine, dried over Na2SO4, filtered, and concentrated to crude, dark solid. The material was dissolved in CHCl3 and purified on silica gel column, eluting with 0 to 20% of EtOAc in hexanes, to give the desired product (2.71 g, 99%). LCMS calculated for C16H11ClF2NO (M+H)+: m/z=306.0; Found: 306.1.

1. customThe mixture was degassed with N2 for 5 min.
2. temperatureAfter cool to rt
3. additionthe mixture was diluted with EtOAc
4. customThe layers were separated
5. extractionthe aq. layer was extracted with more EtOAc
6. washThe combined extracts were washed with brine
7. dry with materialdried over Na2SO4
8. filtrationfiltered
9. concentrationconcentrated to crude, dark solid
10. dissolutionThe material was dissolved in CHCl3
11. custompurified on silica gel column
12. washeluting with 0 to 20% of EtOAc in hexanes