反应详情

温度

-78 °C

Combine 3-phenylpropionitrile (2.0 g, 15.25 mmol) and tetrahydrofuran (15 mL). Cool to −78° C. using a dry-ice/acetone bath. Add a solution of lithium bis(trimethylsilyl)amide (16.0 mL, 1 M in THF, 16.0 mmol). After 1 hour, add 2-(t-butyldimethylsilyloxy)ethyl iodide (4.58 g, 16.0 mmol). After the addition of 2-(t-butyldimethylsilyloxy)ethyl iodide is complete, warm slowly to ambient temperature over about 7 hours. Add water and extract twice 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 5% ethyl acetate/hexane to give the title compound: Rf=0.50 (silica gel, 10% ethyl acetate/hexane).

1. temperaturewarm slowly to ambient temperature over about 7 hours
2. extractionAdd water and extract twice with ethyl acetate
3. dry with materialDry the combined organic layers over Na2SO4
4. filtrationfilter
5. concentrationconcentrate in vacuo
6. customto obtain a residue