反应详情

In the same way as described for Compound 85, step 1, using 2-fluoropyridine-4-boronic acid (0.047 g, 0.337 mmol), 5-bromo-imidazo[1,2-a]pyrazin-8-yl)-4-morpholin-4-yl-phenylamine (0.105 g, 0.281 mmol), Pd(PPh3)4 (32 mg, 0.0281 mmol) and NaOtBu (0.108 g, 1.12 mmol) in N,N-dimethylformamide/water (7 mL). The residue is chromatographed on silica gel, eluting with DCM followed by 95:5 DCM:NH3 (7M in MeOH), and the fractions containing the desired product are combined and evaporated to afford the title compound containing some side products. Additional purification by reverse phase prep HPLC affords the title compound as a yellow solid (18 mg, 16%). LCMS: Rt 1.99 min (98%), m/z (APCI) 416 (M+H)+; 1H-NMR (400 MHz, d6-DMSO) δ (ppm) 3.09-3.13 (10H, m), 3.78 (4H, m), 6.89 (2H, m), 6.97 (2H, d), 7.59 (1H, s), 7.72 (1H, s), 7.93 (2H, d), 8.09 (1H, s), 8.12 (1H, d), 9.60 (1H, s).

1. customThe residue is chromatographed on silica gel
2. washeluting with DCM
3. additionNH3 (7M in MeOH), and the fractions containing the desired product
4. customevaporated