反应详情

温度

50 °C

To a mixture of 3-(8-(6-(2-methylpyrrolidin-1-yl)pyridin-2-ylamino)imidazo[1,2-b]pyridazin-6-yl)phenol (40 mg, 0.1 mmol) and K2CO3 (28 mg, 0.2 mmol) in DMF (5 mL) was added 2-(diethylamino)ethyl methanesulfonate (30 mg, 0.15 mmol). The mixture was heated at 50° C. for 15 h. After cooling, the mixture was poured into water and extracted with EtOAc (3×10 mL). The combined organic layers were washed with brine, dried over MgSO4, filtrated and concentrated. The residue was purified by chromatography (silica, EtOAc) to give 6-(3-(2-(diethylamino)ethoxy)phenyl)-N-(6-(2-methylpyrrolidin-1-yl)pyridin-2-yl)imidazo[1,2-b]pyridazin-8-amine (18 mg, 37%). 1H NMR (300 MHz, CDCl3): δ 8.64 (s, 1H), 8.04 (s, 1H), 7.93 (s, 1H), 7.59-7.53 (m, 3H), 7.45-7.36 (m, 2H), 7.28 (s, 1H), 7.04 (d, 1H, J=8.4 Hz), 6.23 (d, 1H, J=8.1 Hz), 6.04 (d, 1H, J=8.4 Hz), 4.29-4.15 (m, 3H), 3.68 (brs, 1H), 3.52-3.49 (m, 1H), 2.97-2.93 (m, 2H), 2.72-2.65 (m, 4 h), 2.15-2.04 (m, 3H), 1.77 (brs, 3H), 1.26 (d, 3H, J=6.3 Hz), 1.11 (t, 6H, J=7.1 Hz). LC/MS: 486 [M+H]+, tR=1.48 min. HPLC: 95.50% at 214 nm, 96.62% at 254 nm, tR=5.45 min.

1. temperatureAfter cooling
2. extractionextracted with EtOAc (3×10 mL)
3. washThe combined organic layers were washed with brine
4. dry with materialdried over MgSO4
5. filtrationfiltrated
6. concentrationconcentrated
7. customThe residue was purified by chromatography (silica, EtOAc)