Tungstic acid catalysed Knoevenagel condensation: Synthesis of 5-arylidene -2, 4-thiazolidinediones
Keywords:
5-Arylidene-2, 4-thiazolidinedione, heterogeneous, Tungstic acid, Knoevenagel condensation.Abstract
The Knoevenagel condensation between aromatic aldehyde and 2,4-thiazolidinedione catalysed by solid acid catalyst, tungstic acid is presented. Tungstic acid is heterogeneous, cheaper and reusable catalyst. The resulting products 5-arylidene-2, 4-thiazolidinediones are highly useful for precursors of hypoglycaemic agent.
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