反应详情

Diethyl azodicarboxylate (557 μl, 3.53 mmol) was added to a solution of 4-(4-fluoro-2-methylindol-5-yloxy)-7-hydroxy-6-methoxyquinazoline (1 g, 2.95 mmol), triphenylphosphine (1.15 g, 4.42 mmol) and 3-bromo-1-propanol (293 ul, 3.24 mmol) in methylene chloride (25 ml). The mixture was stirred at ambient temperature for 1 hour and the residue was purified by column chromatography eluting with increasingly polar mixtures of methylene chloride and methanol. The fractions containing the expected product were combined and evaporated. The residue was triturated under diethyl ether and the solid was filtered, washed with diethyl ether and evaporated to give 7-(3-bromopropoxy)-4-(4-fluoro-2-methylindol-5-yloxy)-6-methoxyquinazoline (1.35 g, 100%).

1. customthe residue was purified by column chromatography
2. washeluting
3. temperaturewith increasingly polar mixtures of methylene chloride and methanol
4. additionThe fractions containing the expected product
5. customevaporated
6. customThe residue was triturated under diethyl ether
7. filtrationthe solid was filtered
8. washwashed with diethyl ether
9. customevaporated