反应详情

温度

175 °C

A mixture of 5-[3-(2-chloro-4-pyrimidinyl)imidazo[1,2-a]pyridin-2-yl]-N-(2,6-difluorophenyl)-2-(ethyloxy)benzamide (Intermediate Example 6) (0.10 g, 0.20 mmol), 2-(methyloxy)-4-{4-[4-(methylsulfonyl)-1-piperazinyl]-1-piperidinyl}aniline (Example 58, Step B) (0.073 g, 0.20 mmol) and para-toluenesulfonic acid (0.090 g, 0.47 mmol) in i-PrOH (5 mL) was heated in a microwave at 175° C. for 25 min. The reaction mixture was concentrated onto silica gel and purified by flash chromatography. Recrystallization from DCM and diethyl ether afforded N-(2,6-difluorophenyl)-2-(ethyloxy)-5-(3-{2-[(2-(methyloxy)-4-{4-[4-(methylsulfonyl)-1-piperazinyl]-1-piperidinyl}phenyl)amino]-4-pyrimidinyl}-imidazo[1,2-a]pyridin-2-yl)benzamide (0.066 g, 40%) as a brown solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 9.76 (s, 1H), 9.37 (br. s., 1H), 8.45 (s, 1H), 8.21 (d, J=5.2 Hz, 1H), 8.06 (d, J=1.5 Hz, 1H), 7.65-7.81 (m, 2H), 7.35-7.50 (m, 3H), 7.28 (d, J=8.6 Hz, 1H), 7.16-7.25 (m, 2H), 6.88-7.02 (m, 1H), 6.69 (d, J=2.3 Hz, 1H), 6.46-6.61 (m, 2H), 4.22-4.33 (m, 2H), 3.81 (s, 3H), 3.71-3.79 (m, 2H), 3.03-3.15 (m, 4H), 2.87 (s, 3H), 2.64-2.73 (m, 2H), 2.58-2.64 (m, 4H), 2.38-2.46 (m, 1H), 1.80-1.89 (m, 2H), 1.50-1.62 (m, 2H), 1.44 (t, J=6.9 Hz, 3H). MS (M+H, ES+) 838.

1. concentrationThe reaction mixture was concentrated onto silica gel
2. custompurified by flash chromatography
3. customRecrystallization from DCM and diethyl ether