Recent Progress in the Construction of C−N Bonds via Metal‐Free Radical C(sp3)−H Functionalization

Abstract Nitrogen‐containing compounds widely exist in pharmaceuticals and multifunctional materials. Thus, the development of C−N bond formation reactions is of great importance in synthetic chemistry. Since 2014, obvious progress has been made in the construction of C−N bonds via metal‐free radical C( sp 3 )−H functionalization, which is one of the major protocols due to its high reaction activity and mild conditions. To the best of our knowledge, there are still no exclusive reviews about the formation of C−N bonds through metal‐free radical C( sp 3 )−H functionalization. This review aims to highlight the recent advances in this area since 2014, according to the type of the nitrogen source (amines, amides, sulfonamides, azoles, azides and other nitrogen sources). The paper is focused on discussions about the reaction mechanisms and selected examples of substrates have also been listed. magnified image