反应详情

4-Methoxybenzo(b)furan-2-carboxylic acid (44.0 g) and propargylamine (12 g) were dissolved in dimethylformamide (200 ml), and WSC (48.0 g), HOBt (43.0 g) and triethylamine (50 ml) were added thereto at room temperature. The mixture was stirred for 4 hr. The reaction mixture was poured into ice water and extracted with ethyl acetate. The organic layer was washed with saturated aqueous solution of ammonium chloride, dried over anhydrous sodium sulfate and concentrated under reduced pressure to give the title compound as yellow crystals (45.0 g).

1. customat room temperature
2. extractionextracted with ethyl acetate
3. washThe organic layer was washed with saturated aqueous solution of ammonium chloride
4. dry with materialdried over anhydrous sodium sulfate
5. concentrationconcentrated under reduced pressure