Sodium Hydroxide → HCID 23706982, compound

Participants

Reaction Steps

A mixture of 2-oxo-7-anilinoindoline (3 g.), sodium hydroxide (1.07 g.), dioxane (10 ml.) and water (50 ml.) was refluxed under heating for 22 hours with stirring. After cooling, the reaction mixture was filtered, and the filtrate was evaporated under reduced pressure. The residue was dissolved in ethanol under heating and filtered. The filtrate was evaporated under reduced pressure and the oily residue was crystallized with ethyl acetate, collected by filtration, washed with ethyl acetate and dried to give powdery crystals of the captioned compound (1.8 g.). mp 195° to 200° C.

Provenance & Evidence