Electrochemical Borylation of Aryldiazonium Salts: A Catalyst‐Free Approach to CB Bond Formation

This study presents an electrochemical strategy for the synthesis of arylboronates from aryldiazonium salts and bis(pinacolato)diboron (B 2 pin 2 ). The transformation is achieved via constant‐current electrolysis in an undivided cell, without requiring external oxidants or reductants, metal catalysts, acid/base additives, or any additional promoters. Notably, the method exhibits excellent functional‐group tolerance, accommodating a wide range of structurally diverse substrates and delivering the target arylboronates in moderate to good yields, with most exceeding 70%.