Abstract
An efficient route for the Knoevenagel condensation of aromatic aldehydes with barbituric acids and 2-thiobarbituric acids in the presence of polyvinyl pyrrolidone (PVP) stabilized Ni nanoparticles in ethylene glycol has been reported. A range of biologically important arylidene barbiturates were obtained in high yields (82–97%) in a very short reaction time. A novel and highly efficient PVP-stabilized Ni nanoparticles catalyzed synthesis of arylidene barbiturates and arylidene 2-thiobarbiturates has been described.
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