反应详情

温度

65 °C

To a flask containing 5-bromo-2-[8-(1-ethyl-propyl)-2,6-dimethyl-imidazo[1,2-b]pyridazin-3-yl]-thiophene-3-carbonitrile (0.25 g, 0.62 mmol) and PdCl2(dppf) (0.023 g, 0.031 mmol) is added a solution of 0.5 M 2-thiazolylzinc bromide (6.0 mL, 3.10 mmol). The solution is heated at 65° C. overnight, diluted with EtOAc (30 mL), washed with sat. NH4Cl (2×25 mL), dried over MgSO4, filtered and concentrated. The residue is purified by ISCO column chromatography (15%-20% EtOAc/hexane gradient) furnish the title compound (0.16 g, 0.39 mmol, 64%). 1H NMR (CDCl3) δ 0.88 (t, J=7.5 Hz, 6H), 1.75-1.93 (m, 4H), 2.58 (s, 3H), 2.66 (s, 3H), 3.25-3.35 (m, 1H), 6.78 (s, 1H), 7.38 (d, J=3.5 Hz, 1H), 7.70 (s, 1H), 7.84 (d, J=3.5 Hz, 1H). LC/MS (m/z): calcd. for C21H21N5S2 (M+H)+: 408.6; found: 408.1.

1. washwashed with sat. NH4Cl (2×25 mL)
2. dry with materialdried over MgSO4
3. filtrationfiltered
4. concentrationconcentrated
5. customThe residue is purified by ISCO column chromatography (15%-20% EtOAc/hexane gradient)