反应详情

In a 1 L round-bottomed flask 1,3-diiodobenzene (26.43 g, 80 mmol), 1H-benzo[d]imidazole (20.82 g, 176 mmol), and 1,10-phenanthroline (5.77 g, 32.0 mmol), CuI (3.05 g, 16 mmol), and cesium carbonate (120 g, 369 mmol) were combined in anhydrous DMF (350 mL) to give a brown suspension. The reaction was purged with N2 for 20 minutes and then heated to reflux for 24 hours. The reaction mixture was passed thought a plug of silica gel (5% MeOH in DCM) to obtain the crude product. The crude product was subjected to silica gel chromatography (SiO2, 400 g, 2% MeOH to 5% MeOH in DCM) to ultimately obtain the final product (12.66 g, 51%).

1. customto give a brown suspension
2. customThe reaction was purged with N2 for 20 minutes
3. temperatureheated
4. temperatureto reflux for 24 hours
5. customto obtain the crude product