Abstract
Potassium sodium tartrate (KNaC4H4O6·4H2O) was applied as an efficient catalyst for the one-pot, three-component condensation reactions consisting of aromatic aldehydes, malononitrile, and 4-hydroxycoumarin/dimedone/α-naphthol/thiobarbituric acid in aqueous ethanol. Use of nontoxic reaction components, short reaction times, environmental, easy work-up, and high yields are some important advantages of this method.
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