反应详情

To a solution of 7-[4-(4-butyl-phenylethynyl)-benzylamino]-2,2-dimethyl-benzo[1,3]-dioxin-4-one (1.16 g, 2.64 mmol) in DMSO (32 mL) was added sodium hydride (159 mg, 3.96 mmol, 55-65% in oil) and the resulting mixture was stirred 2 min at rt, then 1-bromohexane (559 μl, 3.96 mmol) was added. The red solution was stirred at rt for 2 hrs. The reaction mixture was poured in EtOAc (70 mL) and washed with an aqueous solution of HCl (2×30 mL, 0.1N) and water (6×30 mL). The organic layer was dried over MgSO4 and the solvents were removed under reduced pressure. The crude mixture was purified by flash chromatography on silicagel (c-Hex/EtOAc (6/1)) to give 795 mg (56%) of the title compound as a yellow oil. HPLC, Rt: 6.4 min (purity: 98.3%). M+(ESI): 524.5. 1H NMR (CDCl3) δ: 7.71 (d, J=8.7 Hz, 1H), 7.47 (d, J=8.3 Hz, 2H), 7.41 (d, J=7.9 Hz, 2H), 7.13 (m, 4H), 6.36 (m, 1H), 6.04 (m, 1H), 4.58 (s, 2H), 3.40 (t, J=7.7 Hz, 2H), 2.61 (t, J=7.7 Hz, 2H), 1.76-1.48 (m, 8H), 1.42-1.20 (m, 10H), 0.95-0.82 (m, 6H).

1. stirringThe red solution was stirred at rt for 2 hrs
2. washwashed with an aqueous solution of HCl (2×30 mL, 0.1N) and water (6×30 mL)
3. dry with materialThe organic layer was dried over MgSO4
4. customthe solvents were removed under reduced pressure
5. customThe crude mixture was purified by flash chromatography on silicagel (c-Hex/EtOAc (6/1))