反应详情

To 4-(6-chloroimidazo[1,2-b]pyridazin-8-ylamino)-N-(1-(4-fluorophenyl)-2-oxo-1,2-dihydropyridin-3-yl)benzamide (0.011 g, 0.023 mmol) from 1a was added trans-1,4-diaminocyclohexane (0.5 g, 57.0 mmol). The mixture was allowed to melt at 160° C. for 12 hours. The melt was then cooled, diluted with water and extracted with dichloromethane. The organic layer was then concentrated in vacuo to give 0.020 g of crude product. Purification was done via preparative HPLC providing 0.006 g of the title compound as a TFA salt. 1H NMR (400 MHz, MeOD) δ ppm 8.56 (1H, dd, J=7.38, 1.78 Hz), 7.92-8.10 (3H, m), 7.88 (1H, d, J=2.03 Hz), 7.42-7.61 (3H, m), 7.39 (1H, dd, J=7.12, 1.53 Hz), 7.30 (2H, t, J=8.65 Hz), 6.77 (1H, s), 6.54 (1H, t, J=7.12 Hz), 3.97 (1H, s), 3.66-3.84 (1H, m), 3.03-3.24 (1H, m), 2.26 (2H, m), 2.00-2.20 (2H, m), 1.44-1.68 (2H, m), 1.22-1.46 (2H, m). LC/MS, m/e 533 (M+1). HPLC Rt, 2.14 min. YMC ODSC18 column (4.6×50 mm). 0%-100% B. Solvent B: (90% MeOH, 10% H2O, 0.1% TFA). Solvent A: (10% MeOH, 90% H2O, 0.1% TFA). Gradient, start % B=0, final % B=100, gradient time 4 min, hold at 100% B 1 min, flow rate 4 mL/min.

1. temperatureThe melt was then cooled
2. extractionextracted with dichloromethane
3. concentrationThe organic layer was then concentrated in vacuo
4. customto give 0.020 g of crude product
5. customPurification