Shafida Abd

Despite their known utility, universal synthetic methods to access organic 1,2-disubstituted diazenes (─N═N─) are scarce, in contrast to the numerous reactions available for the formation of alkenes. 1,2-Diaryldiazenes, also referred to as azo compounds, are found in a myriad of molecules from pharmaceuticals (1) to photoresponsive materials (2) including dyes, pigments, photochemical switches, and chemosensors (Scheme 1A) and are accessed through azo couplings and related reactions.