2‐(Alkyl/arylamino)chromone‐3‐carbaldehyde reacts with Meldrum's acid, hippuric acid, 4‐hydroxycoumarin, diethyl malonate, ethyl acetoacetate, or ethyl benzoylacetate to produce 1‐benzopyrano[2,3‐b]pyridine‐2,5‐dione moiety, but ethyl cyanoacetate and malononitrile react differently. J. Heterocyclic Chem., (2010).