A mixture of 4-(3-hydroxyprop-2-en-1-yl)pyridine (180 mg, 1.3 mmol) and thionyl chloride (0.3 ml) in toluene (10 ml) was stirred at room temperature for 2 hours. The volatiles were removed by evaporation to give crude 4-(3-chloroprop-2-en-1-yl)pyridine hydrochloride (180 mg, 0.94 mmol)) This product was added to a mixture of 4-(4-chloro-2-fluoroanilino)-7-hydroxy-6-methoxyquinazoline (500 mg, 1.6 mmol) and potassium carbonate (500 mg, 4.9 mmol) in DMF (20 ml) and the mixture stirred at 100° C. for 1 hour. The reaction mixture was allowed to cool and partitioned between ethyl acetate and water. The organic layer was separated, washed with water and brine, dried (MgSO4) and the solvent removed by evaporation. The residue was purified by column chromatography eluting with methylene chloride/methanol (100/0 increasing to 95/5) and then by reverse phase (C18) HPLC eluting with methanol/water (30/70 increasing to 50/50) to give 4-(4-chloro-2-fluoroanilino)-6-methoxy-7-(3-(pyrid-4-yl)prop-2-en-1-yloxy)quinazoline (15 mg, 4%).
