反应详情

To a well-stirred ice-bath-chilled solution of the racemic mixture of Step C (650 mg, 2.0 mmol) in anhydrous tetrahydrofuran (10 ml), a solution of lithium aluminum hydride in tetrahydrofuran (6.11 ml of a 1.0M solution, 6.11 mmol of lithium aluminum hydride) was added dropwise over 5 minutes. The reaction mixture was then stirred for 24 hours at ambient temperature before being ice-bath-chilled and cautiously quenched with 15% aqueous sodium hydroxide (2 ml). Anhydrous sodium sulfate was added to dry the mixture, which was then filtered. The filtrate was concentrated in vacuo to afford the title compound as a colorless oil in quantitative yield.

1. temperaturebath-chilled
2. customcautiously quenched with 15% aqueous sodium hydroxide (2 ml)
3. additionAnhydrous sodium sulfate was added
4. customto dry the mixture, which
5. filtrationwas then filtered
6. concentrationThe filtrate was concentrated in vacuo