Abstract
AbstractThe chemical behavior of 4,9‐dimethoxy‐5‐oxo‐5H‐furo[3,2‐g]chromene‐6‐carbonitrile (1) was investigated toward some acyclic and cyclic active methylene ketones namely acetylacetone, ethyl acetoacetate, ethyl benzoylacetate, acetoacetanilide, dimedone, indanedione, pyrazolidine‐3,5‐dione and 5‐methyl‐2‐phenyl‐2,4‐dihydro‐3H‐pyrazol‐3‐one, barbituric acid and 1‐allylthiobarbituric acid, and hippuric acid. A variety of novel heteroannulated furochromenopyridines were efficiently synthesized through a cascade reactions between 4,9‐dimethoxy‐5‐oxo‐5H‐furo[3,2‐g]chromene‐6‐carbonitrile (1) and the carbon nucleophilic reagents. Structures of the new products were inferred based on their analytical and spectral data.
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