反应详情

温度

-78 °C

To a suspension of LDA (2.6 g, 24.3 mmol) in THF (30 mL) at −78° C. was slowly added methyl tetrahydrofuran-2-carboxylate (3.0 g, 23.0 mmol). The resulting mixture was stirred at −78° C. for 20 minutes, and TMS chloride (2.6 g, 24.3 mmol) was slowly added. The reaction was stirred for 1 hour at −78° C. and then warmed to room temperature for 2 hours. The reaction mixture was concentrated under reduced pressure, avoiding contact with water. Hexanes (20 mL) was then added, and the mixture was passed through a short plug of celite, eluting with hexanes (10 mL). The solution was then concentrated, affording the crude product in good purity.

1. stirringThe reaction was stirred for 1 hour at −78° C.
2. temperaturewarmed to room temperature for 2 hours
3. concentrationThe reaction mixture was concentrated under reduced pressure
4. additionHexanes (20 mL) was then added
5. washeluting with hexanes (10 mL)
6. concentrationThe solution was then concentrated