Synthesis and Applications of Ferrocene‐Fused Nitrogen Heterocycles

The Front Cover shows the fusion of ferrocene and heterocyclic compounds (exemplified by pyridine). The chemistry of ferrocene-fused nitrogen heterocycles has recently become an exciting field of research. From a synthetic point of view, the transfer to ferrocene of some of the powerful transition-metal-catalyzed methodologies developed for the C−H bond functionalization of benzene derivatives has no doubt contributed to this extraordinary development. Moreover, because of the planar chirality most of these ferrocene-fused systems exhibit, some of them have found interesting applications as organocatalysts in asymmetric catalysis. In this review, we showcase recent advances in the synthesis and applications of this type of fused systems. The cover was designed by Illan López. More information can be found in the Review by L. A. López and co-workers.