反应详情

To a solution of ethyl 4-(benzyloxy)-8-methoxy-3-methylquinoline-2-carboxylate (1.95 g) in toluene (30 mL) was added dropwise a solution of diisobutylaluminum hydride in toluene (0.99M, 6.1 mL) at room temperature under nitrogen flow, followed by stirring. After 1 hour and 2 hours, a solution of diisobutylaluminum hydride in toluene (0.99M, each 6.1 mL) was added thereto, followed by stirring for 3 hours. Water was added to the reaction mixture to stop the reaction, and then anhydrous sodium sulfate was added thereto, followed by stirring. Insolubles were removed by filtration through Celite. The filtrate was concentrated under reduced pressure, and then the residue was purified by silica gel column chromatography (eluent: hexane/ethyl acetate=50/50˜ethyl acetate, then chloroform˜chloroform/methanol=95/5) to obtain [4-(benzyloxy)-8-methoxy-3-methylquinolin-2-yl]methanol (551 mg).

1. stirringby stirring for 3 hours
2. customthe reaction
3. stirringby stirring
4. customInsolubles were removed by filtration through Celite
5. concentrationThe filtrate was concentrated under reduced pressure
6. customthe residue was purified by silica gel column chromatography (eluent