反应详情

温度

100 °C

[3-(2-Chloro-4-pyrimidinyl)imidazo[1,2-a]pyridin-2-yl]-N-(2,6-difluorophenyl)-2-(ethyloxy)benzamide (Intermediate Example 6) (100 mg, 0.2 mmol), 2-(methyloxy)-4-[4-(methylsulfonyl)-1-piperazinyl]aniline (51 mg, 0.18 mmol), and p-toluenesulfonicacid (90 mg, 0.47 mmol) were weighed into a 20 mL vial. 1 mL of trifluoroethanol was added and the mixture was heated to 100° C. for 72 h. 2 mL of 2 N ammonia in MeOH was added. The solvent was rotovaped down. The residue was taken up in 3 mL of DCM. 1 g of silica gel was added. The solvent was rotovaped down and the pre-absorbed solids were purified by flash chromatography to give the title compound (75 mg, 0.099 mmol, 56%). 1H NMR (400 MHz, DMSO-d6) δ ppm 9.74 (s, 1H), 9.37 (s, 1H), 8.48 (s, 1H), 8.21 (d, J=5.13 Hz, 1H), 8.04 (d, J=1.83 Hz, 1H), 7.74 (dd, J=8.61, 2.38 Hz, 1H), 7.69 (d, J=8.80 Hz, 1H), 7.42-7.49 (m, 2H), 7.34-7.40 (m, 1H), 7.26 (d, J=8.80 Hz, 1H), 7.19 (t, J=8.07 Hz, 2H), 6.96 (t, J=7.15 Hz, 1H), 6.73 (d, J=2.57 Hz, 1H), 6.50-6.56 (m, 2H), 4.26 (q, J=6.97 Hz, 2H), 3.81 (s, 3H), 3.25 (br. s., 8H), 2.92 (s, 3H), 1.43 (t, J=6.97 Hz, 3H); MS (ESI): 755 [M+H]+.

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