反应详情

温度

0 °C

6-Hydroxybenzothiophene (22, 8.55 g, 56.9 mmol) and imidazole (4.65 g, 68.3 mmol) were dissolved in dichloromethane (120 mL) and TBDMS-Cl (9.73 g, 62.6 mmol) dissolved in dichloromethane (50 mL) was slowly added at 0° C. The reaction mixture was agitated at 0° C. for 1 hour. After adding water and transferring the resulting solution to a separatory funnel, the dichloromethane layer was separated. The remaining organic compound was extracted three times with dichloromethane. After removing water using sodium sulfate, the solvent was removed under reduced pressure. Column chromatography yielded 6-(t-butyldimethylsilyloxy)benzothiophene (23, 13.6 g, 90%) as a liquid.

1. additionwas slowly added at 0° C
2. customthe dichloromethane layer was separated
3. extractionThe remaining organic compound was extracted three times with dichloromethane
4. customAfter removing water
5. customthe solvent was removed under reduced pressure