反应详情

To a stirred solution of 6-chloro-3-chloromethyl-4-methoxy-pyridazine (58 mg, 0.3 mmol) and 2-(3-chloro-2,6-difluoro-phenyl)-imidazole (65 mg, 0.3 mmol) in DMF (6 mL) is added NaH (60% suspension in mineral oil, 14 mg). The mixture is stirred at room temperature overnight. The solvent is removed in vacuo and water (5 mL) and EtOAc (8 mL) is added. The layers are separated and the aqueous layer is extracted with EtOAc (8 mL). The combined extracts is washed with brine (8 mL) and dried (Na2SO4) and evaporated. Preparative TLC purification (5% MeOH in CH2Cl2) of the residue provides the title compound as a light yellow oil. H1 NMR δ (CDCl3) 7.48–7.56 (m, 1H), 7.15–7.20 (m, 2H), 7.02 (t, 1H, J=8.4 Hz), 6.87 (s, 1H), 5.27 (s, 2H), 3.764 (s, 3H).

1. customThe solvent is removed in vacuo and water (5 mL) and EtOAc (8 mL)
2. additionis added
3. customThe layers are separated
4. extractionthe aqueous layer is extracted with EtOAc (8 mL)
5. washThe combined extracts is washed with brine (8 mL)
6. dry with materialdried (Na2SO4)
7. customevaporated
8. customPreparative TLC purification (5% MeOH in CH2Cl2) of the residue