Iron‐Catalysed Borylation of Arenediazonium Salts to Give Access to Arylboron Derivatives via Aryl(amino)boranes at Room Temperature

Abstract Complementary to previously described Miyaura borylation methods, a new access to boron derivatives via aryl(amino)boranes is described. Direct coupling between aryldiazonium salts and diisopropylaminoborane is catalysed by 0.1% ferrocene leading to the formation of a carbon‐boron bond. The obtained aryl(amino)boranes could eventually then be transformed into boronic acids, boronates or borates.