反应详情

温度

0 °C

5-Methoxy-4-methyl-1H-indole (10 g, 62.0 mmol) is dissolved in DCM (400 mL) and cooled to 0° C. BBr3 (155 mL, 155 mmol) is added dropwise over 1 hour and the black mixture is allowed to warm to room temperature overnight (17 hours). The reaction is poured over a mixture of ice and sodium bicarbonate (aq) solution and extracted with ethyl acetate (1.5 L) and concentrated to a black oil. The oil is absorbed onto silica and separated via FCC (0-50% ethyl acetate:heptanes) to obtain the title compound as a solid. MS (ESI) m/z 148.23 (M+1).

1. temperatureto warm to room temperature overnight (17 hours)
2. extractionextracted with ethyl acetate (1.5 L)
3. concentrationconcentrated to a black oil
4. customThe oil is absorbed onto silica
5. customseparated via FCC (0-50% ethyl acetate:heptanes)