反应详情

To a solution of (4-methanesulfonyl-phenylethynyl)-trimethyl-silane (20.7 g , 82.0 mmol) in tetrahydrofuran (450 mL) was added tetrabutylammonium fluoride hydrate (8.80 g, 27.3 mmol). An immediate color change from yellow to red was observed. After 5 minutes, the reaction was complete, and the solvent was removed in vacuo. Water was added, and the resulting mixture was then extracted three times with ethyl acetate. The combined organic layers were washed with water and brine, dried over magnesium sulfate, filtered, and concentrated. The residue was suspended in dichloromethane, and the insoluble material was filtered off. The filtrate was concentrated to give the crude product. Flash chromatography (RediSep® Flash column, 230-400 mesh, 0-25% ethyl acetate in hexane) afforded 1-ethynyl-4-methanesulfonyl-benzene (10.7 g, 72% yield) as a yellow solid.

1. customthe solvent was removed in vacuo
2. additionWater was added
3. extractionthe resulting mixture was then extracted three times with ethyl acetate
4. washThe combined organic layers were washed with water and brine
5. dry with materialdried over magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated
8. filtrationthe insoluble material was filtered off
9. concentrationThe filtrate was concentrated
10. customto give the crude product