反应详情

温度

75 °C

In a pressure vessel, N-[2-Amino-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-4-methoxybenzamide (116) (170 mg, 0.462 mmol), 1-(4-bromophenyl)ethanone (184 mg, 0.923 mmol), (or any aryl bromide from the tables below), DME (4.6 mL per mmol of 116) and H2O (2.15 mL per mmol of 116) were added. Air was then removed by vacuum and then the vessel was purged with nitrogen. Pd(PPh3)4 (27 mg, 0.023 mmol, 0.05 eq.) and Na2CO3 (147 mg, 1.38 mmol, 3.0 eq.) were then added and oxygen was removed after each addition. The pressure vessel was sealed and the mixture was stirred at 75° C. overnight. The mixture was cooled at room temp., water was added and the mixture was extracted with EtOAc. The combined organic layers were rinsed with brine, dried over MgSO4 and concentrated to give 42 mg (25%) of the title compound 117. 1H NMR (DMSO-d6) (ppm): 9.61 (s, 1H), 7.96 (dd, J=12.8, 8.8 Hz, 4H), 7.70 (d, J=8.8 Hz, 2H), 7.60 (d, J=2.1 Hz, 1H), 7.42 (dd, J=8.4, 2.3 Hz, 1H), 7.04 (d, J=8.8 Hz, 2H), 6.86 (d, J=8.2 Hz, 1H), 5.26 (s, 2H), 3.84 (s, 3H), 2.58 (s, 3H). MS (m/z): 360.41 (calc) 361.1 (MH+) (found).

1. customAir was then removed by vacuum
2. customthe vessel was purged with nitrogen
3. customoxygen was removed
4. additionafter each addition
5. customThe pressure vessel was sealed
6. temperatureThe mixture was cooled at room temp.
7. additionwater was added
8. extractionthe mixture was extracted with EtOAc
9. washThe combined organic layers were rinsed with brine
10. dry with materialdried over MgSO4
11. concentrationconcentrated