反应详情

温度

80 °C

A stirred suspension of 13A.HCl (5.12 g, 24.65 mmol) in acetonitrile (75 mL) was treated with K2CO3 (13.63 g, 99 mmol) and (bromomethyl)benzene (7.32 mL, 61.6 mmol). The resulting suspension was stirred at 80° C. overnight. Upon cooling, the solid was filtered off and filtrate was concentrated. The residue was purified by Isco silica column (80 g) eluted with ethyl acetate-hexane: 0%-20%. Concentration of the appropriate fractions provided 13B (7.92 g, 91% yield) as a colorless oil. MS (ES): m/z=352.2 [M+H]+. 1H NMR (400 MHz, CDCl3) δ ppm 7.08-7.34 (m, 10H); 4.01 (q, 2H, J=7.1 Hz); 3.55 (s, 4H); 2.40-2.49 (m, 1H); 2.06-2.14 (m, 1H); 1.86-2.00 (m, 2H); 1.24-1.38 (m, 2H); 1.18 (t, 3H, J=7.1 Hz).

1. temperatureUpon cooling
2. filtrationthe solid was filtered off
3. concentrationfiltrate was concentrated
4. customThe residue was purified by Isco silica column (80 g)
5. washeluted with ethyl acetate-hexane