Journal of the Serbian Chemical Society (Jan 2011)
An ultrasound-promoted green approach for the synthesis of 3-(indol-3-yl)-3-hydroxyindolin-2-ones catalyzed by Fe(III)
Abstract
Ferric chloride hexahydrate was used as a recyclable homogeneous catalyst in aqueous media for the synthesis of 3-(indol-3-yl)-3-hydroxyindolin-2-ones under sonication. It was found that the employed conditions afford the products smoothly in good to excellent yields.
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