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An efficient and convenient method for the synthesis of bis(4H‐chromene‐3‐carbonitrile) derivatives by one‐pot, multicomponent reaction of bis‐aldehydes, malononitrile, and dimedone in the presence of a catalytic amount of piperidine is reported. Bis(2‐benzylidene‐1H‐indene)‐1,3‐(2H)‐dione derivatives were obtained as the main products as a result of reaction of the bis(arylidenemalononitriles) with indandione. The anti‐influenza H5N1 virus activities of the newly prepared bis‐chromene derivatives are also investigated.

An efficient and convenient route for the synthesis of novel bis dihydropyrano[3,2‐c]chromenes is reported. The synthetic pathway involves one‐pot, multicomponent reaction of bis‐aldehydes, malononitrile, and 4‐hydroxycoumarin in the presence of pyridine or acetic acid/sodium acetate. A stepwise approach for the synthesis of the target compounds was also investigated. The anticancer activity of the synthesized products against MCF7, HEPG2, and A549 cell lines was assessed. Attempts to detect the molecular action of 6g, docking simulation was done using DHFR PDB:ID (1DLS). The study revealed that compound 6g was strongly fit into the active sites of the target protein through six bindings, and hence, it was considered as promising inhibitor for cancer proliferation.

Heterocycles represent the largest diversity of organic compounds with signifcant chemical, biomedical, and industrial applications. They exist in numerous natural products, dyes, and as scaffolds in diverse drugs and related pharmaceutically active substances. Substantial attention has been paid to develop various elegant methods to synthesize heterocycles. Among different strategies, Michael and Hantzsch reactions are considered as effective approaches for construction of heterocycles and their corresponding fused derivatives. This review covers this area especially in the last 10 years. The heterocyclic systems reported in this review are classified according to the kind of the heterocyclic systems.

Different methods for the synthesis of pyridine derivatives as well as the chemical reactivity profiles and structures of these substances are reviewed. The utility of these compounds as precursors is emphasized in the synthesis of many heterocycles that are pharmacologically active organic compounds and agrochemicals. This review results from a literature survey containing some synthetic methods and applications of pyridine derivatives.