反应详情

温度

60 °C

A suspension of 1-bromo-4-(3-bromopropoxy)benzene (1.85 g, 6.29 mmol), 4,4-difluoropiperidine hydrochloride (1.0 g, 6.34 mmol) and potassium carbonate (2.17 g, 15.7 mmol) in acetonitrile (100 mL) was heated to 60° C. overnight, then concentrated in vacuo. The residue was partitioned between ether and saturated aqueous sodium bicarbonate. The layers were separated; the organic layer was washed with saturated aqueous sodium bicarbonate, water and brine. The organic layer was dried (Na2SO4), filtered and concentrated. Purification by flash column chromatography on an analogix SF40-80g column (hexanes/ethyl acetate=7:3) afforded the title compound as a clear oil (1.07 g, 50%). LCMS m/z 334.3 (M+1). 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 1.90-2.08 (m, 6 H) 2.47-2.64 (m, 6 H) 3.99 (t, J=6.34 Hz, 2 H) 6.75-6.81 (m, 2 H) 7.34-7.40 (m, 2 H).

1. concentrationconcentrated in vacuo
2. customThe residue was partitioned between ether and saturated aqueous sodium bicarbonate
3. customThe layers were separated
4. washthe organic layer was washed with saturated aqueous sodium bicarbonate, water and brine
5. dry with materialThe organic layer was dried (Na2SO4)
6. filtrationfiltered
7. concentrationconcentrated
8. customPurification by flash column chromatography on an analogix SF40-80g column (hexanes/ethyl acetate=7:3)