反应详情

Oxalyl chloride (0.4 ml, 2.2 mmol) was added to a suspension of 7-(3-carboxypropoxy)-4-(4-chloro-2-fluoroanilino)-6-methoxyquinazoline (260 mg, 0.64 mmol), (prepared as described for the starting material in Example 42), in methylene chloride (25 ml) followed by 1 drop of DMF. The mixture was stirred at ambient temperature for 2.5 hours and the volatiles were removed by evaporation. A solution of pyrrolidine (0.13 ml, 2.1 mmol) in N,N-dimethylacetamide (8 ml) was added to the solid residue and the mixture was stirred at ambient temperature for 2 hours. The volatiles were removed by evaporation and the residue was purified by column chromatography eluting with methylene chloride/methanol/aqueous ammonia (100/8/1). The purified product was triturated with acetone, collected by filtration and dried to give 4-(4-chloro-2-fluoroanilino)-6-methoxy-7-(3-pyrrolidin-1-ylcarbonylpropoxy)quinazoline (206 mg, 70%).

1. custom(prepared
2. customthe volatiles were removed by evaporation
3. stirringthe mixture was stirred at ambient temperature for 2 hours
4. customThe volatiles were removed by evaporation
5. customthe residue was purified by column chromatography
6. washeluting with methylene chloride/methanol/aqueous ammonia (100/8/1)
7. customThe purified product was triturated with acetone
8. filtrationcollected by filtration
9. customdried