反应详情

温度

50 °C

4-Nitrobenzoyl chloride (11.00 g, 0.06 mol) and dry pyridine (9.08 mL, 0.11 mol) were sequentially added to a solution of amine E3 (4.85 g, 0.02 mol) in dry dioxane (200 mL), and the resulting solution heated at ˜50° C. for 5 d. After this time, the reaction mixture was cooled to room temperature, and then basified by addition of aqueous ammonia solution. The resulting suspension was filtered through a pad of Celite to afford amide E4 as an amorphous yellow solid (3.40 g, 41%). 1H NMR [(CD3)2SO]: 2.09 [s, 3H, ArCH3], 5.87 [s, 1H, ArNHAr], 6.08 [br s, 6.08, ArNH2], 7.68 [m, 4H, ArH], 8.18 [d, J=8.80 Hz, 2H, ArH], 8.36 [d, J=8.80 Hz, 2H, ArH], 8.95 [s, 1H, ArH], 10.45 [s, 1H, ArC(O)NHAr]. LCMS (APCI+): 365 (100%).

1. temperatureAfter this time, the reaction mixture was cooled to room temperature
2. filtrationThe resulting suspension was filtered through a pad of Celite