反应详情

温度

80 °C

To a 0° C. solution of N,N-dimethylformamide (1.9 mL, 24.97 mmol) in a three-neck flask equipped with a condenser was added POCl3 (0.65 mL, 6.94 mmol) dropwise via syringe with stirring. When the heat of the reaction subsided, 2-phenylfuran (1.0 g, 6.94 mmol) was added. The reaction was warmed to 80° C. and stirred overnight. The solution was cooled to room temperature and then neutralized to pH 8 with aqueous saturated sodium acetate. The mixture was extracted with ether (3×30 mL), dried over MgSO4, filtered and evaporated. Chromatography (silica gel, 20% ether/hexanes) yielded 1.0 g (83%) of 5-phenyl-2-furaldehyde.

1. temperatureWhen the heat of the reaction
2. stirringstirred overnight
3. temperatureThe solution was cooled to room temperature
4. extractionThe mixture was extracted with ether (3×30 mL)
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. customevaporated