反应详情

2.0 M LDA in heptane/THF/ethylbenzene (6.0 mL, 12 mmol) was slowly added to a solution of ethyl (4-bromophenyl)acetate (2.43 g, 10.0 mmol) in THF (20 mL) at −78° C. and then the mixture was stirred for 30 min. Methyl iodide (0.93 mL, 15 mmol) was added at −78° C. and then the reaction was stirred for an additional 30 min. Saturated NH4Cl aq. was added to quench the reaction. The mixture was extracted with ethyl acetate. The combined organic layers were washed with water and brine, dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by flash chromatography on a silica gel column with ethyl acetate in hexane (0-10%) to afford the desired product (2.0 g).

1. stirringthe reaction was stirred for an additional 30 min
2. customto quench
3. customthe reaction
4. extractionThe mixture was extracted with ethyl acetate
5. washThe combined organic layers were washed with water and brine
6. dry with materialdried over Na2SO4
7. filtrationfiltered
8. concentrationconcentrated under reduced pressure
9. customThe residue was purified by flash chromatography on a silica gel column with ethyl acetate in hexane (0-10%)