Among the various substituents that can be grafted onto an aromatic framework, which of the followin — Haloalkanes and Haloarenes Chemistry Question

💡 Solution & Explanation

The Sandmeyer reaction is specifically defined by the use of $Cu(I)$ salts to introduce a group. It is the premier method for synthesizing aryl chlorides (using $CuCl/HCl$), aryl bromides (using $CuBr/HBr$), and importantly, aryl nitriles (using $CuCN/KCN$). Introducing a hydroxyl group merely requires warming the diazonium solution with water. Introducing an iodine atom simply requires adding $KI$ (no copper catalyst needed). Introducing a fluorine atom strictly requires the Balz-Schiemann process using $HBF_4$.