反应详情

To a solution of 7-oxaspiro[3.5]nonan-6-one (0.67 g) in tetrahedrofuran (3 mL) cooled at −78° C. was added 1M diisobutylaluminum hydride/tetrahydrofuran (1.0 mL) dropwise over 5 minutes. The reaction solution was stirred at that temperature for 1.5 hours. Water (40 μL) was added to the reaction solution. After allowing the temperature to rise to room temperature, a 15% aqueous sodium hydroxide solution (40 μL) and water (120 μL) were successively added to the solution. After stirring the solution at room temperature for 10 minutes, diethyl ether (2 mL) and anhydrous magnesium sulfate (0.17 g) were added. The solution was stirred for additional 30 minutes. The reaction solution was then filtered with Celite. The filtrate was concentrated under reduced pressure to give the title compound (230 mg).

1. customto rise to room temperature
2. stirringAfter stirring the solution at room temperature for 10 minutes
3. stirringThe solution was stirred for additional 30 minutes
4. filtrationThe reaction solution was then filtered with Celite
5. concentrationThe filtrate was concentrated under reduced pressure