反应详情

3-butyryl-4-(2-methylphenylamino)-8-hydroxyquinoline (2.40 g, 7.5 mmol) and potassium t-butoxide (1.22 g, 10 mmol) were dissolved in tetrahydrofuran (40 ml), 2-(2-chloroethoxy)ethanol (1.58 ml, 15 mmol) added, and the mixture heated at reflux for 18 hours. The solvent was evaporated, the residue taken up in dichloromethane, washed with water and brine, dried and evaporated. Chromatography (silica gel, 3-5% methanol in dichloromethane) and recrystallisation from ethyl acetate gave 3-butyryl-4-(2-methylphenylamino)-8-(2-(2-hydroxyethoxy)ethoxy)quinoline (1.77 g, 60%), m.p. 144°-146°.

1. temperaturethe mixture heated
2. temperatureat reflux for 18 hours
3. customThe solvent was evaporated
4. washwashed with water and brine
5. customdried
6. customevaporated
7. customChromatography (silica gel, 3-5% methanol in dichloromethane) and recrystallisation from ethyl acetate