反应详情

温度

0 °C

K-t-BuO (2.32 g, 20.6 mmol) was added to a stirred solution of tryptophol (1.7 g, 10.6 mmol) in dioxane (30 mL) at 0° C. (ice-bath). After being stirred for 10 min at 0° C. and 10 min at room temperature, the mixture was chilled to 0° C. (ice-bath) and 2,6-dichloropyrazine (1.37 g, 9.17 mmol) was added. The yellowish reaction mixture was stirred at 0° C. for 30 min and for a further 20 min at room temperature. The mixture was diluted with dichloromethane, filtered, and concentrated in vacuo to furnish a brownish oil. This material was purified by chromatography on silica gel (14×5 cm) using n-hexane/ethyl acetate (75:25). This furnished 1.38 g (55%) of the title compound as a beige solid. Purity >90% by 1H NMR in CDCl3.

1. additionwas added
2. customThe yellowish reaction mixture
3. stirringwas stirred at 0° C. for 30 min and for a further 20 min at room temperature
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customto furnish a brownish oil
7. customThis material was purified by chromatography on silica gel (14×5 cm)