Potassium Carbonate → 4-(4-Chloro-2-fluoroanilino)-6-methoxy-7-[2-(2-oxo-1,2-dihydro-1-pyridyl)ethoxy]quinazoline

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Reaction Conditions

Reaction Steps

A mixture of 4-(4-chloro-2-fluoroanilino)-7-hydroxy-6-methoxyquinazoline (300 mg, 0.94 mmol), (prepared as described for the starting material in Example 15), 1-(2-chloroethyl)-1,2-dihydro-2-pyridone (175 mg, 1.1 mmol), (J. Am. Chem. Soc. 1951, 73, 3635), and potassium carbonate (260 mg, 1.9 mmol) in DMF (30 ml) was heated at 80° C. for 3 hours, allowed to cool to ambient temperature and stirred for a further 18 hours. The mixture was diluted with water and extracted with ethyl acetate. The extract was washed with water, dried (MgSO4) and the solvent removed by evaporation. The residue was purified by column chromatography eluting with methylene chloride/methanol/triethylamine mixtures (100/0/0 increasing to 70/30/0.5) to give 4-(4-chloro-2-fluoroanilino)-6-methoxy-7-[2-(2-oxo-1,2-dihydro-1-pyridyl)ethoxy]quinazoline (50 mg, 12%). m.p. 209-211 ° C. 1H NMR Spectrum: (DMSOd6) 3.94(s, 3H); 4.35(t, 2H); 4.41 (t, 2H); 6.22(dd, 1H); 6.40(d, 1H); 7.14(s, 1H); 7.35(dd, 1H); 7.42(ddd, 1H); 7.5-7.6(m, 2H); 7.70(d, 1H); 7.80(s, 1H); 8.35(s, 1H); 9.53(s, 1H) MS-ESI: 441 [MH]+

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