Abstract
Site-selective mono-cross-coupling reactions involving dichloro- or dibromo(hetero)aryl substrates are utilized to prepare substituted monochloro- or monobromo(hetero)arenes, which are used as drug components and synthetic precursors. In these reactions, selectivity toward the preferred reaction site of a dihalo(hetero)arene can vary depending on the ancillary ligand of the transition metal catalyst. This review summarizes the examples of ligand-controlled site-selective cross-coupling reactions, specifically those mediated by Pd complexes.
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