Aryldiazonium salts are widely used in many organic transformations with displacement
of N2 or through addition to the terminal nitrogen. Such aryldiazonium salts can be viewed
as N-based Lewis acids that can react with Lewis bases to synthesize a wide variety
of azo compounds. Additionally, diazonium salts are known to undergo single-electron
transfer and release N2, forming an aryl radical, which results in different reactivity. Herein, we provide
a concise overview of the reactivity of aryldiazonium salts undergoing classical donor-acceptor
reactivity or single-electron transfer.
Key words
diazonium salts - donor–acceptor adducts - N-based Lewis acids - phosphines - carbenes
- radicals