Remote Diazenylation of Fluorinated Alkyl Iodides via 1,5-HAT.

Herein, we demonstrated a site-selective diazenylation of fluorinated alkyl iodides via 1,5-hydrogen atom transfer using diazonium salts, in combination with iron metal and ferrocene as an inexpensive catalytic system. The reactions proceeded under mild conditions with high regioselectivity, thereby enabling the efficient synthesis of a diverse range of azo compounds that have been difficult to access by traditional synthetic methods.