反应详情

温度

130 °C

5-[3-(2-chloro-4-pyrimidinyl)imidazo[1,2-a]pyridin-2-yl]-N-(2,6-difluorophenyl)-2-(ethyloxy)benzamide (Intermediate Example 6) (150 mg, 0.3 mmol), 2-(ethyloxy)-4-{4-[2-(methylsulfonyl)ethyl]-1-piperazinyl}aniline (Example 143, step C) (87 mg, 0.27 mmol), and p-toluenesulfonic acid (135 mg, 0.71 mmol) were weighed into a 20 mL vial. 10 mL of iPrOH was added and the mixture was heated to 130° C. for 72 h. The mixture was transferred to a 50 mL round bottom and neutralized with 5 mL of 0.5 N sodium methoxide. The solvent was rotovaped down. The residue was taken up in 10 mL of DCM. 1 g of silica gel was added. The solvent was rotovaped down and the pre-adsorbed solids were purified by flash chromatography to give the title compound (121 mg, 0.15 mmol, 57%). 1H NMR (400 MHz, DMSO-d6) δ ppm 9.73 (s, 1H), 9.31 (s, 1H), 8.35 (s, 1H), 8.21 (d, J=5.31 Hz, 1H), 8.03 (d, J=2.01 Hz, 1H), 7.73 (dd, J=8.70, 2.11 Hz, 1H), 7.68 (d, J=8.97 Hz, 1H), 7.39-7.47 (m, 2H), 7.32-7.39 (m, 1H), 7.24 (d, J=8.79 Hz, 1H), 7.18 (t, J=8.06 Hz, 2H), 6.92 (t, J=7.05 Hz, 1H), 6.66 (d, J=2.38 Hz, 1H), 6.53 (d, J=5.31 Hz, 1H), 6.44-6.49 (m, 1H), 4.24 (q, J=6.90 Hz, 2H), 4.05 (q, J=6.96 Hz, 2H), 3.30-3.34 (m, 2H), 3.08-3.14 (m, 4H), 3.02 (s, 3H), 2.74 (t, J=6.87 Hz, 2H), 2.54-2.59 (m, 4H), 1.41 (t, J=6.87 Hz, 3H), 1.23 (t, J=6.96 Hz, 3H). MS (ESI): 797 [M+H]+.

1. addition1 g of silica gel was added
2. customthe pre-adsorbed solids were purified by flash chromatography