Magnetic Field‐Driven Efficient Generation of Aryl Radical from Aryl Diazonium Salts †

Comprehensive Summary The development of sustainable and green methods for the generation and utillzation of aryl radicals remains a challenge for organic chemists. In recent years, redox reaction has harnessed light or mechanical energy to enable the formation of aryl radicals. Herein, we report a magnetoredox system for aryl radical generation, in which electromagnetic induction drives electron transfer from aryl diazonium salts using a rotating magnetic field and metal rods. This system facilitates the facile arylation of N ‐arylacrylamides, activated alkenes, B 2 Pin 2 , and disulfides with aryl diazonium salts without the need for catalysts or organic additives. Furthermore, this magnetoredox method enables one‐pot, practical arylation using readily available aniline derivatives, affording the corresponging borylated and thiolated products in good yields. Mechanistic investigations indicate that the magnetoredox arylations proceed through single‐electron transfer (SET) events driven by electromagnetic reduction. This approach exhibts broad substrate scope and mild conditions, offering an attractive and powerful strategy for divergent synthesis of aromatic compounds through multifaceted regulation of magnetic intensity, rotation frequency, and rod size.