Theophylline Hydrogen Sulfate: A green and efficient catalyst for synthesis of 3,3-bis(1H-indol-3-yl)indolin-2-one derivatives
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DOI: 10.1080/00397911.2023.2205594
Abstract: Abstract A new green protocol for the synthesis of 3,3-bis(1H-indol-3-yl)indolin-2-one derivatives by reacting isatin with indole in the presence of Theophylline Hydrogen Sulfate as a new solid acid, a highly effective and reusable catalyst. This… read more here.
Keywords: bis indol; catalyst; indolin one; one derivatives ... See more keywords