Abstract
Background: Solvent-free reaction for the synthesis of thiobarbituric acids (TBAs) by the reaction of 1,3-disubstituted thioureas and malonyl chloride using Amberlyst-15 as a green catalyst has been reported. Recyclability of the catalyst was possible up to five runs without loss of catalytic activity.
Conclusion: The simple workup, isolation without column, excellent yields, is main advantages of present protocol.Keywords: Thioureas, malonyl chloride, thiobarbituric acid, recyclability, amberlyst-15, plausible mechanism.
Graphical Abstract
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