Fifty Years of π‐Conjugated Triazenes

This microreview describes synthetic methodologies, properties, and applications of π‐conjugated triazenes, derived from coupling of different N ‐heterocyclic carbenes (NHCs), following reactions with diverse azides. Recently, promising results have been achieved by utilizing such triazenes in a variety of important organic transformations. These early accomplishments clearly emphasize the great potential of utilizing π‐conjugated triazenes in diverse fields of research. Specifically, synthesis of new organic molecules containing N ‐heterocycles and azide moieties for applications into organic chemistry and material science are highlighted herein. In summary, this microreview encompasses fifty years of π‐conjugated triazenes (1965–2015) chemistry.