反应详情

To a mixture of 4-methyl-2-[(pyridine-4-carbonyl)amino]thiazole-5-carboxylic acid (0.40 g, 1.50 mmol) and 4-methylmorpholine (0.25 mL, 2.20 mmol) in tetrahydrofuran (50 mL) was added 2-chloro-4,6-dimethoxy-1,3,5-triazine (0.32 g, 1.80 mmol). The resulting mixture was stirred at ambient temperature for 4 h, and then benzylamine (0.2 mL, 1.80 mmol) was added. The reaction mixture was stirred at room temperature for 47 h and then concentrated. Purification of the residue by column chromatography afforded the title compound in 45% yield (0.24 g); m.p. 171-172° C.; 1H NMR (DMSO-d6, 300 MHz) δ 13.15 (s, 1H), 8.78-8.63 (m, 3H), 7.94 (dd, J=1.5, 4.5 Hz, 2H), 7.32-7.17 (m, 5H), 4.38 (d, J=6.0 Hz, 2H), 2.51 (s, 3H); 13C NMR (DMSO-d6, 75 MHz) δ 162.0, 150.9, 140.0, 139.5, 128.7, 127.7, 127.2, 122.2, 114.3, 43.1, 17.1; MS (ES+) m/z 353.3 (M+1).

1. stirringThe reaction mixture was stirred at room temperature for 47 h
2. concentrationconcentrated
3. customPurification of the residue by column chromatography