反应详情

1-Chloro-N,N,2-trimethylprop-1-en-1-amine (Ghosez's reagent, 7.85 mL, 59.3 mmol) was added drop-wise to a solution of C5 (9.30 g, 19.8 mmol) in dichloromethane (200 mL). After 1 hour at room temperature, the reaction mixture was partitioned between dichloromethane and saturated aqueous sodium bicarbonate solution. The organic layer was washed with saturated aqueous sodium chloride solution, dried over sodium sulfate, filtered, and concentrated in vacuo. Silica gel chromatography (Gradient: 0% to 100% ethyl acetate in heptane) provided the product as a solid. Yield: 6.90 g, 15.2 mmol, 77%. LCMS m/z 452.1, 454.1 [M+H]+. 1H NMR (400 MHz, CDCl3) δ 13.69 (br s, 1H), 8.38-8.43 (m, 2H), 7.64-7.70 (m, 1H), 7.54-7.60 (m, 2H), 7.34 (s, 1H), 4.45 (d, J=12.5 Hz, 1H), 3.93 (d, J=12.5 Hz, 1H), 3.74-3.83 (m, 1H), 3.28-3.36 (m, 1H), 3.23 (dd, J=13.5, 4.0 Hz, 1H), 2.77 (dd, J=13.5, 2.8 Hz, 1H), 1.66-1.82 (m, 2H), 1.32 (d, J=6.2 Hz, 3H).

1. customthe reaction mixture was partitioned between dichloromethane and saturated aqueous sodium bicarbonate solution
2. washThe organic layer was washed with saturated aqueous sodium chloride solution
3. dry with materialdried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuo