反应详情

温度

0 °C

Combine 1-(3,4,5-trimethoxybenzyl)-3-(phenylmethyl)-3-(2-(t-butyldimethylsilyloxy)ethyl)-2-oxopyrrolidine (1.0 g, 1.95 mmol) and tetrahydrofuran (5 mL). Cool to 0° C. using a ice bath. Add a solution of tetrabutylammonium fluoride (3.90 mL, 1 M in THF, 3.90 mmol). After the addition is complete, warm to ambient temperature. After 1.5 hours, add aqueous 1 M hydrochloric acid solution (20 mL). Extract three times with ethyl acetate. Dry the combined organic layers over Na2SO4, filter, and concentrate in vacuo to obtain a residue. Chromatograph the residue on silica gel eluting with 1/1 ethyl acetate/hexane to give the title compound: Rf=0.27 (silica gel, 1/1 ethyl acetate/hexane).

1. additionAfter the addition
2. temperaturewarm to ambient temperature
3. extractionExtract three times with ethyl acetate
4. dry with materialDry the combined organic layers over Na2SO4
5. filtrationfilter
6. concentrationconcentrate in vacuo
7. customto obtain a residue