Reaction Steps
To 3-[3-(2-chloro-4-pyrimidinyl)imidazo[1,2-a]pyridin-2-yl]-N-(2,6-difluorophenyl)benzamide (Intermediate Example 1) (100 mg, 0.217 mmol) and (5-methyl-2-(ethyloxy)-4-{4-[2-(methylsulfonyl)ethyl]-1-piperazinyl}phenyl)amine (Example 248, Step B) (100 mg, 0.293 mmol) in trifluoroethanol (5 mL) was added p-toluene sulfonic acid (100 mg, 0.526 mmol), and the vial was sealed and heated to 80° C. overnight. The reaction was then cooled to rt and silica was added. The solvent was removed on a rotovap and the product purified on a 12 g ISCO column. Desired fractions were combined and rotovaped down. The resulting foam was dissolved in DCM and ether was added to provide the title compound (25 mg, 0.032 mmol, 15%) as a yellow solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 10.19 (s, 1H), 9.36 (d, J=7.5 Hz, 1H), 8.33 (s, 1H), 8.31 (s, 1H), 8.23 (d, J=5.1 Hz, 1H), 8.01 (d, J=7.8 Hz, 1H), 7.78 (d, J=7.9 Hz, 1H), 7.71 (d, J=9.0 Hz, 1H), 7.60-7.51 (m, 2H), 7.48-7.32 (m, 2H), 7.17 (t, J=8.1 Hz, 2H), 6.95 (t, J=6.3 Hz, 1H), 6.71 (s, 1H), 6.50 (d, J=5.1 Hz, 1H), 4.03 (q, J=7.2 Hz, 2H), 3.36-3.24 (m, 2H), 3.03 (s, 3H), 2.86-2.79 (m, 4H), 2.74 (t, J=7.0 Hz, 2H), 2.64-2.50 (m, 4H), 2.10 (s, 3H), 1.22 (t, J=7.0 Hz, 3H). MS (ESI) m/z=384 [M+2H]+2.
