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A facile synthesis of 5-arylidene barbituric/thiobarbituric acid derivatives catalyzed by NaOH/fly ash

Lakshman S.Gadekar, Machhindra K.Lande

A newroute to obtain 5-arylidene barbituric/thiobarbituric acid derivatives is reported using a fly ash. It was modified by fusion with NaOH and characterized byXRD, FT-IR spectroscopy. It has been found thatmodified fly ash shows efficient catalytic property in the synthesis of 5-arylidene barbituric/thiobarbituric acid derivatives by Knoevenagel condensation of aromatic aldehydes with barbituric/thiobarbituric acid in aqueous medium. The method is simple, high yielding and cost efficient.