反应详情

65.5 g (0.474 mol) of powdered potassium carbonate was added to a solution of 28.9 g (0.143 mol) of (6-nitro-1H-indol-3,yl)-acetonitrile (13) from Step C above in 230 ml of dimethylformamide at room temperature. The suspension was stirred for 40 minutes then 25.48 g (0.179 mol) of methyl iodide was added dropwise over 65 minutes. After stirring at room temperature over night the reaction mixture was cooled and poured into a total of 600 ml of water. The precipitate was filtered, washed with a little water and dried on phosphor anhydride until reaching constant weight. The procedure yielded 30.4 g (95.4%) of (1-methyl-6-nitro-1H-indol-3-yl)acetonitrile (14), which was used without further purification.

1. stirringAfter stirring at room temperature over night the reaction mixture
2. temperaturewas cooled
3. filtrationThe precipitate was filtered
4. washwashed with a little water
5. dry with materialdried on phosphor anhydride