反应详情

温度

-15 °C

To a solution of LDA in THF (60 mL) was added methyl 3,4-methylenedioxyphenylacetate (2 g, 10.3 mmol) at -78° C. and the solution was warmed to -15° C. for 45 min. MeI (4.39 g, 30.9 mmol) was added and the reaction was warmed to room temperature for 16 h. The reaction mixture was then poured to a separatory funnel containing NH4Cl (80 mL) and the product was extracted with EtOAc (2×150 mL) and dried over Na2SO4. The crude product obtained by removal of the solvent was purified by flash chromatography to give the product as a colorless solid (1.36 g , 63%). 1H NMR (CDCl3) 6.75 (m, 3H), 5.95 (s 2H), 3.67 (s, 3H), 3.66 (m, 1H), 1.46 (d, J=7.4, 3H).

1. temperaturethe reaction was warmed to room temperature for 16 h
2. additionThe reaction mixture was then poured to a separatory funnel
3. extractionthe product was extracted with EtOAc (2×150 mL)
4. dry with materialdried over Na2SO4
5. customThe crude product obtained by removal of the solvent
6. customwas purified by flash chromatography