反应详情

温度

60 °C

To a solution of 4-(3-acetoxy-4-methylanilino)-7-hydroxy-6-methoxyquinazoline hydrochloride (375 mg, 1 mmol) in DMF (16 ml ) were added at ambient temperature potassium carbonate (415 mg, 3 mmol) and 4-(bromomethyl)pyridine hydrobromide (J.Org.Chem. 1958, 23, 575, 278 mg, 1.1 mmol). The reaction mixture was heated at 60° C. for 2 hours. The mixture was evaporated and the residue was partitioned between ethyl acetate and water. The organic layer was washed with a saturated aqueous sodium chloride solution, dried (MgSO4) and evaporated. The residue was purified by column flash chromatography, eluting with methylene chloride/methanol (95/5) to give 4-(3-acetoxy-4-methylanilino)-6-methoxy-7-(4-pyridylmethoxy)quinazoline (93 mg, 22%). m.p. 201-202° C. 1H NMR Spectrum: (DMSOd6) 2.12(s, 3H); 2.34(s, 3H); 4.02(s, 3H); 5.40(s, 2H); 7.27(s, 1H); 7.30(d, 1H); 7.51(d, 2H); 7.62(s, 1H); 7.65(d, 1H); 7.91(s, 1H); 8.47(s, 1H); 8.63(d, 2H); 9.53(s, 1H) MS−ESI: 453 [MNa]+, 431 [MH]+

1. customThe mixture was evaporated
2. customthe residue was partitioned between ethyl acetate and water
3. washThe organic layer was washed with a saturated aqueous sodium chloride solution
4. dry with materialdried (MgSO4)
5. customevaporated
6. customThe residue was purified by column flash chromatography
7. washeluting with methylene chloride/methanol (95/5)