反应详情

To a solution of 1-(4-fluoro-3-methoxyphenyl)-2-phenylethanol (23.7 g, 40.6 mmol) in acetone (240 mL) was added Jones reagent (64 mL) at rt. The reaction mixture was stirred overnight, quenched by the addition of isopropanol and diluted with EtOAc. The organic portion was washed with 1 N HCl (2×), dried over Na2SO4, filtered and concentrated under reduced pressure to yield the 1-(4-fluoro-3-methoxyphenyl)-2-phenylethanone (15 g, 66% yield). LCMS: RT=3.250 min [M+H] 245.1 (Phenomenex Luna C18 column, 4.6×50 mm eluting with 10-90% MeOH/H2O over 4 minutes containing 0.1% NH4OAc; 4 mL/min, monitoring at 220 nm); 1H NMR (500 MHz, CDCl3) δ ppm 7.62 (dd, J=8, 1 Hz, 1H), 7.60-7.55 (m, 1H), 7.35-7.29 (m, 2H), 7.26-7.23 (m, 3H), 7.10 (dd, J=10, 8 Hz, 1H), 4.24 (s, 2H), 3.89 (s, 3H).

1. customquenched by the addition of isopropanol
2. additiondiluted with EtOAc
3. washThe organic portion was washed with 1 N HCl (2×)
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure