反应详情

In the same way as described for Compound 178, step 4 using (5-bromo-imidazo[1,2-a]pyrazin-8-yl)-[4-(2-morpholin-4-yl-ethoxy)-phenyl]-amine (113 mg, 0.27 mmol), 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (105 mg, 0.541 mmol), 1.5M Na2CO3 (1.44 mL, 2.14 mmol), and Pd(PPh3)4 (0.78 g, 0.67 mmol) in dioxane (4.3 mL). Purification by silica gel column chromatography eluting with 96:4 DCM:NH3 (7M in MeOH) followed by trituration with diethyl ether, affords the title compound as a free base (0.071 g, 65%). LCMS: Rt 1.59 min (100%), m/z (APCI) 406 (M+H)+; 1H-NMR (400 MHz, d6-DMSO) δ (ppm) 2.40-2.60 (4H, m), 2.70-2.73 (2H, t), 3.61-3.63 (4H, m), 4.10 (2H, m), 6.94-6.97 (2H, d), 7.58 (1H, s), 7.74 (1H, s), 7.97 (2H, d), 8.06 (1H, s), 8.13 (1H, s), 8.41 (1H, s), 9.45 (1H, s), 13.41 (1H, br s).

1. customPurification by silica gel column chromatography
2. washeluting with 96:4 DCM