Catalytic Cross-Coupling Reactions

Catalytic cross-coupling reactions are a class of chemical transformations in which two molecular fragments are joined together to form a new carbon–carbon bond, typically with the help of a transition metal catalyst such as palladium or nickel. Because the ability to connect carbon atoms in precise, controlled ways is fundamental to building complex organic molecules, these reactions have become indispensable in pharmaceutical synthesis, materials science, and agrochemistry. The 2010 Nobel Prize in Chemistry recognized the Suzuki-Miyaura, Heck, and Negishi reactions as landmark achievements, yet researchers continue to push the boundaries by developing cheaper and more earth-abundant catalysts, expanding the range of compatible chemical partners, and designing heterogeneous systems that are easier to recover and reuse. Active open questions include how to achieve broader substrate generality with nickel catalysis, how to minimize toxic byproducts from aryl halide precursors, and how mechanistic insight at the atomic scale can guide the rational design of next-generation catalysts.

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Keywords

Palladium-CatalyzedCross-Coupling ReactionsTransition Metal CatalysisOrganic SynthesisC-C Bond FormationHomogeneous and Heterogeneous Catalysis