反应详情

温度

145 °C

To a mixture of (6-(butylamino)imidazo[1,2-b]pyridazin-3-yl)boronic acid (47 mg, 0.2 mmol), tert-butyl 5-bromoisoindoline-2-carboxylate (47 mg, 0.16 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (7 mg, 0.01 mmol) and tripotassium phosphate (41 mg, 0.3 mmol) was added 3:1 acetonitrile/water (3 mL). The resulting mixture was heated at 145° C. (microwave) for 800 s. The reaction was then filtered and concentrated. The residue was dissolved in methanol, and then filtered again. The filtration was finally purified by preparative HPLC (neutral) to afford tert-butyl 5-(6-(butylamino)imidazo[1,2-b]pyridazin-3-yl)isoindoline-2-carboxylate (43 mg, 66% yield) as a white solid: 1H NMR (METHANOL-d4) δ: 8.15 (d, J=10.9 Hz, 1H), 8.00-8.08 (m, 1H), 7.75 (s, 1H), 7.59 (d, J=9.6 Hz, 1H), 7.35 (t, J=9.1 Hz, 1H), 6.68 (d, J=9.9 Hz, 1H), 4.69 (br. s., 4H), 3.37 (d, J=7.3 Hz, 2H), 1.65-1.78 (m, 2H), 1.56 (s, 9H), 1.45-1.53 (m, 2H), 1.02 (td, J=7.3, 2.3 Hz, 3H); LRMS (ESI) m/e 408.3 [(M+H)+, calcd for C23H30N5O2 408.2].

1. filtrationThe reaction was then filtered
2. concentrationconcentrated
3. dissolutionThe residue was dissolved in methanol
4. filtrationfiltered again
5. filtrationThe filtration
6. customwas finally purified by preparative HPLC (neutral)