反应详情

温度

100 °C

4-(2-Fluoropyridin-3-yl)-6-methyl-1,3,5-triazin-2-amine (0.100 g, 0.49 mmol), 5-amino-2-ethoxypyridine (Combi-Blocks, Inc., San Diego, Calif.), 1,4-dioxane (0.75 mL, 8.8 mmol), (Aldrich, St. Louis, Mo.) and 2 N aqueous HCl (0.24 mL, 0.49mmol) were added to a 50 mL round-bottomed flask. The suspension was stirred at 100° C. overnight. The crude product was adsorbed onto a plug of silica gel and purified by chromatography through a RediSep®, Teledyne ISCO, Lincoln, Nebr., pre-packed silica gel column (40 g), eluting with a gradient of 5% to 20% methanol in dichloromethane to give 4-(2-(6-ethoxypyridin-3-ylamino)pyridin-3-yl)-6-methyl-1,3,5-triazin-2-amine LCMS (API-ES) m/z 324 (M+H)+. 1H NMR (400 MHz, d6-DMSO) δ 11.80 (br. s., 1H); 8.83 (br. s., 1H); 8.27 (d, J=4.11 Hz, 1H); 8.26 (d, J=4.11 Hz, 1H); 8.11 (br. s., 1H); 7.82 (dd, J=2.93, 1.56 Hz, 1H); 8.81 (d, J=4.11 Hz, 1H); 6.92 (br. s., 1H); 6.86 (d, J=9.39 Hz, 1H); 4.28-4.37 (m, 2H); 2.44 (br. s., 3H); 1.33 (t, J=7.04 Hz, 3H).

1. custompurified by chromatography through a RediSep®, Teledyne ISCO, Lincoln, Nebr
2. wash, pre-packed silica gel column (40 g), eluting with a gradient of 5% to 20% methanol in dichloromethane