反应详情

To a stirred solution of (5-hydroxy-1,3-phenylene)dimethanol (3.0, 20.0 mmol), sodium carbonate (2.5 g, 29.0 mmol) and sodium iodide (0.45 g, 2.9 mmol) in 60 ml of DMA was added 1-(4-(2-bromoethoxy)phenyl)ethanone (5.0, 20.57 mmol). The mixture was stirred overnight, evaporated and purified on SiO2 chromatography eluted with EtAc/Hexane (4:1 to 5:1) to afford 5.41 g (86%) of the title compound. 1H NMR (CD3OD) 7.99 (ddd, 2H, J=2.8, 4.8, 9.8 Hz), 7.07 (ddd, 2H, J=2.8, 4.7, 9.8 Hz), 6.94 (s, 1H), 6.89 (s, 2H), 4.58 (s, 4H), 4.42 (dd, 2H, J=2.2, 6.1 Hz), 4.37 (m, 2H), 2.55 (s, 3H); 13C NMR 199.55, 164.66, 160.59, 144.72, 132.03, 131.74, 119.16, 115.64, 113.11, 68.36, 67.87, 65.20, 26.53; MS m/z+339.2 (M+Na).

1. customevaporated
2. custompurified on SiO2 chromatography
3. washeluted with EtAc/Hexane (4:1 to 5:1)