The review highlights the origin, development, mechanistic insights and recent applications of Cu-catalyzed Sonogashira coupling reactions.

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Copper-catalyzed cross-coupling reactions offer a powerful tool for the formation of carbonheteroatom bonds. Copper catalysis has an indisputable advantage over the other catalytic systems due to its low cost and the use of readily accessible and stable ligands. Among the various copper-catalyzed coupling reactions, C-S bond forming reactions have gained much attention due to its applications in the synthesis of molecules having biological and pharmaceutical impact. This review illustrates the current strategies and applications of Cucatalyzed C-S cross coupling reactions.

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Enantioselective zinc-catalyzed aldol reactions provide an efficient route for the construction of a wide range of carbon–carbon bond-formation, which are described here.