ChemInform Abstract: 2-Oxindole Acts as a Synthon of 2-Aminobenzoyl Anion in the K2CO3-Catalyzed Reaction with Enones: Preparation of 1,4-Diketones Bearing an Amino Group and Their Further Transformations.
The potassium carbonate-catalyzed reaction of oxindoles with enones proceeds under the assistance of atmospheric oxygen via a cascade Michael addition/oxidation/ring cleavage process.