反应详情

K2CO3 (1.50 g, 11.05 mmol), isopropylamine (0.65 mL, 11.05 mmol) and iodide 3 (2.50 g, 5.83 mmol) in dry THF (15 mL) were heated at 66° C. in a sealed tube under an argon atmosphere. After 12 h, water (5 mL) was added to the reaction mixture which was then extracted with EtOAc (3×50 mL). The combined organic extracts were dried over MgSO4 and concentrated under reduced pressure to afford 4 as a colorless liquid (1.90 g, 92%) sufficiently pure it was used without further purification. TLC: MeOH/CH2Cl2 (1:4), Rf˜0.30; 1H NMR (400 MHz) δ 7.65-7.67 (m, 4H), 7.30-7.40 (m, 6H), 3.65 (t, J=6.4 Hz, 2H), 2.70-2.82 (m, 1H), 2.55 (t, J=7.3 Hz, 2H), 1.50-1.64 (m, 2H), 1.32-1.50 (m, 4H), 1.05 (d, J=5.8 Hz, 3H), 1.04 (s, 9H); 13C NMR (100 MHz) δ 135.68, 134.21, 129.63, 127.70, 63.95, 48.81, 47.64, 32.60, 30.27, 27.0, 23.76, 23.15, 19.34.

1. extractionwas then extracted with EtOAc (3×50 mL)
2. dry with materialThe combined organic extracts were dried over MgSO4
3. concentrationconcentrated under reduced pressure