Introduction
Organic azides are widely used and versatile building blocks. Their fluorinated derivatives however have been very rare and their stability and reactivity has not been studied. In recent years we have described the synthesis of a library of new organic fluorinated azides from azidotrifluoromethane to more complex ones, demonstrated their superior stability compared to nonfluorinated azides and studied their unique reactivity in cycloadditions, annulations, protonation, or nitrene formation. Thus, fluorinated azides are no longer chemical curiosities but useful reagents in the synthesis of novel nitrogen heterocycles, enamides, imidoyl halides, ketenimines, and other structures with potential applications in life science and material chemistry.