反应详情

温度

50 °C

A mixture of 7-benzyloxy-4-chloro-6-methoxy-quinazoline (5 g, 16.67 mmol), cyclopropane-1,1-dicarboxylic acid (3-fluoro-4-hydroxy-phenyl)-amide(4-fluoro-phenyl)-amide (8.3 g, 25 mmol), potassium carbonate (125 mmol, 17.25 g), and dimethylacetamide (125 ml) was heated 50° C. with stirring for 16 h. Reaction mixture was poured onto ice/water (600 ml) and stirred for 30 minutes, and filtered. The solid was dissolved in ethyl acetate and washed with water (1×), brine, and concentrated. The crude was purified on silica get column eluting with 30% acetone in hexanes to yield cyclopropane-1,1-dicarboxylic acid [4-(7-benzyloxy-6-methoxy-quinazolin-4-yloxy)-3-fluoro-phenyl]-amide(4-fluoro-phenyl)-amide (7.5 g, 76%). 1H NMR (CDCl3): 8.64 (1H, br. s), 8.55 (1H, s), 8.33 (1H, br. s), 7.74-7.71 (1H, dd), 7.54 (1H, s), 7.48-7.33 (8H, m), 7.31-7.24 (2H, m), 7.06-7.02 (2H, m), 5.32 (2H, s), 4.06 (3H, s), 1.77-1.74 (2H, m), 1.63-1.61 (2H, m).

1. customReaction mixture
2. additionwas poured onto ice/water (600 ml)
3. stirringstirred for 30 minutes
4. filtrationfiltered
5. dissolutionThe solid was dissolved in ethyl acetate
6. washwashed with water (1×), brine
7. concentrationconcentrated
8. customThe crude was purified on silica
9. customget column
10. washeluting with 30% acetone in hexanes