反应详情

185 a) To a solution of N-{2-[(2-chloro-[1,2,4]triazolo[1,5-a]pyridin-8-ylamino)-methyl]-phenyl}-N-methyl-methanesulfonamide (250.0 mg, 0.6834 mmol) in acetonitrile (1 mL, 20 mmol) at room temperature was added sodium hydride, 60% disp. in mineral oil (33.0 mg, 0.825 mmol) followed by iodomethane (46.80 uL, 0.7517 mmol). The mixture was stirred at room temperature for 2 hours then additional iodomethane (10 uL) was added and the mixture was stirred at room temperature overnight. The mixture was quenched with water (20 mL) and extracted with dichloromethane (3×20 mL). The combined organic layers were dried over magnesium sulfate, filtered and evaporated to a tan resin. The recovered material was purified via chromatography using an ISCO automated purification apparatus (silica gel column 24 g 20%→80% ethyl acetate:hexane solvent gradient). N-(2-{[(2-Chloro-[1,2,4]triazolo[1,5-a]pyridin-8-yl)-methyl-amino}-methyl]-phenyl)-N-methyl-methanesulfonamide was isolated as tan foam (0.207 g, 80%). 1H NMR (400 MHz, CDCl3, δ, ppm): 7.96 (d, J=6.6 Hz, 1H), 7.35-7.27 (m, 4H), 6.89-6.84 (m, 1H), 6.54 (d, J=8.0 Hz, 1H), 5.54-5.40 (br m, 1H), 5.06-4.90 (br m, 1H), 3.32 (s, 3H), 3.24 (s, 3H), 3.01 (s, 3H). MS=380, 382 (MH)+. 185 b) N-Methyl-N-{2-[(methyl-{2-[4-(4-methyl-piperazin-1-yl)-phenylamino]-[1,2,4]triazolo[1,5-a]pyridin-8-yl}-amino)-methyl]-phenyl}-methanesulfonamide was prepared from N-(2-{[(2-chloro-[1,2,4]triazolo[1,5-a]pyridin-8-yl)-methyl-amino]-methyl}-phenyl)-N-methyl-methanesulfonamide (75.0 mg, 0.197 mmol) and 4-(4-methyl-piperazin-1-yl)-phenylamine (42.0 mg, 0.220 mmol) with 2,2′-bis-dicyclohexylphosphanyl-biphenyl (18.0 mg, 0.0329 mmol) as the ligand in a manner analogous to Example 2d. Product isolated as a tan foam (0.023 g, 21%). 7.94 (d, J=6.6 Hz, 1H), 7.56-7.51 (m, 1H), 7.40 (d, J=8.1 Hz, 2H), 7.35-7.28 (m, 3H), 6.88 (d, J=8.1 Hz, 2H), 6.70 (t, J=7.3 Hz, 1H), 6.57-6.50 (m, 2H), 5.35-5.23 (m, 1H), 5.12-5.00 (m, 1H), 3.23 (s, 3H), 3.15-3.10 (m, 4H), 3.07 (s, 3H), 2.99 (s, 3H), 2.63-2.58 (m, 4H), 2.36 (s, 3H). MS=535 (MH)+.