BX ₃ -Mediated Directed Electrophilic Borylation: Advances, Applications, and Mechanistic Insights

) under mild conditions. We highlight the chelation-assisted activation of both C-H and C-C bonds facilitated by tailored directing groups, encompassing substrates based on indoles, pyrroles, amides, phosphines, enamides, and cyclopropanes.The Account is structured to guide readers through the conceptual development, substrate scope, limitations, and mechanistic foundations of these directed electrophilic transformations. Mechanistic insights, derived from integrated experimental and computational studies, are presented to clarify key intermediates and reaction pathways that govern the selectivity and reactivity. In the concluding section, we acknowledge significant contributions from other research groups, outline persisting challenges, and suggest future directions essential for advancing the field─with the aim of inspiring further research and innovation.