A new catalytic application of a keggin acid in the synthesis of symmetrical bis(indolyl)alkanes
Abstract
Silicotungstic acid, H4SiW12O40, an important Keggin heteropoly acid, efficiently catalysed the reaction of indoles with aryl aldehydes in ethyl acetate solution at room temperature to furnish symmetrical bis(indolyl)alkanes expeditiously.
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