反应详情

温度

0 °C

A solution of ethyl 6-chloro-5-methylindole-2-carboxylate (1.5 g, 6.3 mmol) in DMF (30 mL) was added dropwise to a stirred suspension of sodium hydride (60%, 0.39 g, 10 mmol) in DMF (20 mL) at room temperature under Ar. The reaction was then cooled to 0° C. and stirred for 45 min then chloroacetonitrile (0.81 mL, 13 mmol) was added in one portion. The reaction was heated to 75° C. and stirred for 1 h. After allowing to cool to room temperature the mixture was poured into water (200 mL) and with ethyl acetate (3×100 mL). The combined organic extracts were washed with brine (1×100 mL), dried (magnesium sulfate), filtered and the solvent removed under vacuum to leave the crude product which was used immediately.

1. temperatureThe reaction was heated to 75° C.
2. stirringstirred for 1 h
3. temperatureto cool to room temperature the mixture
4. washThe combined organic extracts were washed with brine (1×100 mL)
5. dry with materialdried (magnesium sulfate)
6. filtrationfiltered
7. customthe solvent removed under vacuum