An efficient synthesis of 3-indolyl-3-hydroxy oxindoles and 3,3-di(indolyl)indolin-2-ones catalyzed by sulfonated β-CD as a supramolecular catalyst in water
Graphical abstract
Keywords
Sulfonated-β-cyclodextrin
3,3-Di(indolyl)indolin-2-ones
Recyclable catalyst
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