Coumarins (2-oxo-2H-1-benzopyrans) is an important class of potentially bioactive natural and unnatural O-heterocycles, and researchers screened them as building blocks in a plethora of organic transformations in the recent past. Coumarins, thus, offered the basic structural motifs of many potent drug candidates, including anticoagulants, antibiotics, antioxidants, anticancer drugs, antituberculosis drugs, anti-inflammatories, and many more. Coumarin derivatives are used as additives in foods and cosmetics, fragrances and perfumes, and agrochemicals. Such molecules find extensive applications also as fluorescent sensors, optical brighteners, fluorescent transthyretin folding sensors, and molecular photonic devices. In organic synthesis, the overall feasibility for synthesizing and/or functionalizing numerous valuable organic motifs largely depends upon the success of carbon-carbon and/or carbon-heteroatom bond formation. In recent times, the direct C-H bond functionalization has attracted a great deal of attention as an advantageous technique in modern synthetic chemistry for constructing carbon-carbon and carbon-heteroatom bonds. Under this purview and as part of our ongoing green chemistry research, we also screened such a potently bioactive coumarin moiety as the building block to design and synthesize various functionalized coumarin derivatives of biological relevance. In this meeting, a few selected synthetic drives in functionalizing courmains to access novel series of heterocycles under the green chemistry approach developed in our laboratory in very recent times will be presented.

Green-inspired synthetic drives with coumarins: a retrospection of our sincere efforts

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27th CRSI National Symposium in Chemistry

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