反应详情

温度

0 °C

Ethyl (RS)-1-(4-Methoxyphenyl)-3-(3,4-methylene-dioxyphenyl)indene-2-carboxylate. To a solution of ethyl (1RS)-1-hydroxy-1-(4-methoxyphenyl)-3-(3,4-methylenedioxyphenyl)-indene-2-carboxylate (0.80 g, 1.9 mmol) in CH2Cl2 (10 ml) at 0° C. under an argon atmosphere was added triethylsilane (0.28 g, 2.4 mmol), followed by boron trfluoride etherate (1 ml, 8.1 mmol). The resulting solution was stirred at 0° C. for 10 min, and was then partitioned between EtOAc and 3 M HCl. The organic extract was washed with saturated aqueous NaCl and dried (MgSO4). The solvent was removed in vacuo, and the residue was filtered through a pad of silica gel, eluting with CH2Cl2. The title compound (mixture of Δ1 and Δ2 double bond isomers) was obtained as a glassy, yellow solid (0.72 g, 94%).

1. customwas then partitioned between EtOAc and 3 M HCl
2. extractionThe organic extract
3. washwas washed with saturated aqueous NaCl
4. dry with materialdried (MgSO4)
5. customThe solvent was removed in vacuo
6. filtrationthe residue was filtered through a pad of silica gel
7. washeluting with CH2Cl2