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A facile and efficient synthesis of 5-arylidene 2,4-thiazolidinedione catalyzed by acidic ionic liquid | Abstract
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Abstract

A facile and efficient synthesis of 5-arylidene 2,4-thiazolidinedione catalyzed by acidic ionic liquid

Author(s): K. F. Shelke, S. S. Idhole, A. D. Badara and J. B. Devhade

An efficient synthesis of 5-arylidine 2,4-thiazolidinediones by the Knoevenagel condensation of aromatic aldehydes with 2,4-thiazolidinedione using 1-benzyl-3-methylimidazolium dihydrogen phosphate ([bnmim]H2PO4) acidic ionic liquid at 70°C. This method gives remarkable advantages such as simple procedure, reactions at mild condition, much faster (50-90 min) reactions, excellent yield of products and the ionic liquid was successfully reused for four cycles without significant loss of activity.