Recent advances in haloarene synthesis by aryne reactions

<h2>Abstract</h2> Recent advances in haloarene synthesis by diverse transformations of aryne intermediates are summarized in this review. Regioselective reactions of 3-haloaryne intermediates have enabled the efficient synthesis of a wide variety of haloarenes, facilitated by structural distortion induced by the electron-withdrawing nature of halogen substituents. In addition, numerous halogenation-based transformations of aryne intermediates have been developed for the construction of highly functionalized haloarenes. These innovative aryne-based strategies offer access to structurally unique aromatic compounds, highlighting the pivotal role of halogens in modern synthetic chemistry. As a result, emerging synthetic methods involving aryne intermediates have proven valuable in various research fields, including materials chemistry and pharmaceutical sciences.