反应详情

温度

90 °C

To N-(3-iodo-4-methylphenyl)-3-(trifluoromethyl)benzamide (400.0 mg, 0.99 mmol) was added 4,4,5,5-tetramethyl-2-(4-nitrophenyl)-1,3,2-dioxaborolane (270 mg, 1.1 mmol) followed by toluene (8.2 mL), then ethanol (1.15 mL), and K2CO3 (270 mg, 2.0 mmol in 1.1 mL water). The reaction was degassed with N2, then tetrakis(triphenylphosphine)palladium(0) (60 mg, 0.05 mmol) was added. The reaction was degassed again, and then heated at reflux under N2 atmosphere at 90° C. until LCMS and TLC indicated complete reaction, about 16 hours. The reaction was then cooled to ambient temperature, transferred to a separatory funnel and partitioned between water and EtOAc. The phases were separated and the organic phase was washed with water, then saturated aqueous NaCl, dried (MgSO4) and then evaporated to dryness to leave the crude product, which was purified by column chromatography to give the product (379 mg, 95.79%). 1H NMR (400 MHz, CDCl3): δ 8.29 (m, 2H), 8.12 (s, 1H), 8.07 (d, 1H), 7.82 (m, 2H), 7.5-7.7 (m, 5H), 7.33 (d, 1H), 2.26 (s, 3H). MS (EI) m/z=401 (M+H).

1. customThe reaction was degassed with N2
2. customThe reaction was degassed again
3. temperatureheated
4. customreaction, about 16 hours
5. temperatureThe reaction was then cooled to ambient temperature
6. customtransferred to a separatory funnel
7. custompartitioned between water and EtOAc
8. customThe phases were separated
9. washthe organic phase was washed with water
10. dry with materialsaturated aqueous NaCl, dried (MgSO4)
11. customevaporated to dryness
12. customto leave the crude product, which
13. customwas purified by column chromatography