反应详情

To a stirred solution of (Z)-ethyl 2-bromo-4-(4,4,4-trifluoro-3-(3,4,5-trichlorophenyl)but-1-en-1-yl)benzoate (360 mg, 0.70 mmol) in CH3CN (1.0 mL) was added iodotrimethylsilane (0.28 mL, 2.8 mmol). The reaction mixture was heated to reflux for 20 h, allowed to cool to ambient temperature and partitioned between CH2Cl2 and aq. 10% Na2S2O3. Organic phase was washed once with aq. 10% Na2S2O3 and dried over MgSO4 and concentrated in vacuo. Passing the material through a silica plug with 10% EtOAc in hexanes, followed by 20% MeOH in CH2Cl2) as the eluting solvents afforded the title compound as a yellow foam (143 mg, 42%): mp 54-64° C.; 1H NMR (400 MHz, CDCl3) δ 11.36 (s, 1H), 7.99 (d, J=8.0 Hz, 1H), 7.43 (s, 1H), 7.30 (s, 2H), 7.14 (d, J=7.9 Hz, 1H), 6.85 (d, J=11.4 Hz, 1H), 6.15 (t, J=10.9 Hz, 1H), 4.36-4.09 (m, 1H); 19F NMR (376 MHz, CDCl3) δ −69.30.

1. temperatureThe reaction mixture was heated
2. temperatureto reflux for 20 h
3. custompartitioned between CH2Cl2 and aq. 10% Na2S2O3
4. washOrganic phase was washed once with aq. 10% Na2S2O3
5. dry with materialdried over MgSO4
6. concentrationconcentrated in vacuo