反应详情

A mixture of 20 g. 5-hydroxyindolinone, 80 ml. acetone and 80 ml. ethanol is saturated with gaseous ammonia and heated under reflux for 3 hours. After evaporation, the reaction mixture is filtered off with suction. There are obtained 27.7 g. of the title compound (94% of theory); m.p. 235° C.

1. additionA mixture of 20 g
2. temperatureheated
3. temperatureunder reflux for 3 hours
4. customAfter evaporation
5. filtrationthe reaction mixture is filtered off with suction
6. customThere are obtained 27.7 g