反应详情

164 a) A suspension of o-Nitrobenzylbromide (5.71 g, 26.4 mmol) and sodium methanesulfinate (4.0 g, 40.0 mmol) in ethanol (70 mL) was stirred at room temperature for 18 hours. The volatiles were evaporated under reduced pressure. To the residue was added water (50 mL) and stirred for 30 minutes. The suspension was filtered, rinsed with water and air dried. 1-Methanesulfonylmethyl-2-nitro-benzene was isolated as a yellow solid (5.36 g, 94%). MP=115-117° C. 1H NMR (400 MHz, CDCl3, δ, ppm): 8.10 (d, J=8.1 Hz, 1H), 7.74-7.65 (m, 2H), 7.62-7.58 (m, 1H), 4.80 (s, 2H), 2.91 (s, 3H). 164 b) 2-Methanesulfonylmethyl-phenylamine was prepared from 1-methanesulfonylmethyl-2-nitro-benzene (1.0 g, 4.6 mmol) in a manner analogous to Example 111a. Product isolated as an off-white solid (0.84 g, 98%). 1H NMR (400 MHz, CDCl3, δ, ppm): 7.20 (t, J=7.5 Hz, 1H), 7.09 (d, J=7.5 Hz, 1H), 6.86-6.76 (m, 2H), 4.30 (s, 2H), 4.28 (br s, 2H), 2.87 (s, 3H). MS=186 (MH)+. 164 c) (2-Chloro-[1,2,4]triazolo[1,5-a]pyridin-8-yl)-(2-methanesulfonylmethyl-phenyl)-amine was prepared from 8-bromo-2-chloro-[1,2,4]triazolo[1,5-a]pyridine (500.0 mg, 2.151 mmol) and 2-methanesulfonylmethyl-phenylamine (440.0 mg, 2.375 mmol) in a manner analogous to Example 2d. Product isolated as a tan solid (0.62 g, 51%). 1H NMR (400 MHz, CDCl3, δ, ppm): 8.02 (d, J=5.9 Hz, 1H), 7.71 (s, 1H), 7.53 (d, J=8.3 Hz, 1H), 7.47-7.41 (m, 3H), 6.89-6.81 (m, 2H), 4.41 (s, 2H), 2.93 (s, 3H). MS=337, 339 (MH)+. 164 d) N(8)-(2-Methanesulfonylmethyl-phenyl)-N(2)-[4-(4-methyl-piperazin-1-yl)-phenyl]-[1,2,4]triazolo[1,5-a]pyridine-2,8-diamine was prepare from (2-chloro-[1,2,4]triazolo[1,5-a]pyridin-8-yl)-(2-methanesulfonylmethyl-phenyl)-amine (75.0 mg, 0.223 mmol) and 4-(4-Methyl-piperazin-1-yl)-phenylamine (47.0 mg, 0.246 mmol) with 2,2′-bis-dicyclohexylphosphanyl-biphenyl (25.0 mg, 0.0457 mmol) as the ligand in a manner analogous to Example 2d. Product isolated as a brown foam (0.013 g, 12%). 1H NMR (400 MHz, CDCl3, δ, ppm): 7.96 (d, J=6.8 Hz, 1H), 7.70 (s, 1H), 7.56 (d, J=8.2 Hz, 1H), 7.51 (d, J=8.8 Hz, 2H), 7.43-7.37 (m, 2H), 7.18 (t, J=7.4 Hz, 1H), 6.96 (d, J=8.8 Hz, 2H), 6.83 (d, J=7.8 Hz, 1H), 6.70 (s, 1H), 6.67 (t, J=7.1 Hz, 1H), 4.45 (s, 2H), 3.18-3.13 (m, 4H), 2.94 (s, 3H), 2.62-2.57 (m, 4H), 2.36 (s, 3H). MS=492 (MH)+.