反应详情

To a mixture of 3-(2,2-diethoxy-ethoxy)-benzoic acid ethyl ester (1.128 g, 4 mmol) and azidotrimethylsilane (0.584 ml, 4.4 mmol) was added SnCl4 (40 μl) at room temperature. After 1 hr, the precipitates were filtered off and the filtrate was evaporated under reduced pressure. The residue was dissolved in methanol, after 10 minutes, solvent was removed under reduced pressure. The residue was purified by a column chromatography (3×20 cm). The product was eluted with 10% petroleum ether (60-80° C.) in DCM. The title compound was obtained as a colourless oil (0.909 g, 81.5%).

1. filtrationthe precipitates were filtered off
2. customthe filtrate was evaporated under reduced pressure
3. dissolutionThe residue was dissolved in methanol, after 10 minutes
4. customsolvent was removed under reduced pressure
5. customThe residue was purified by a column chromatography (3×20 cm)
6. washThe product was eluted with 10% petroleum ether (60-80° C.) in DCM