Thermal- and photo-induced transformations of N-aryl-N-nitroso-hydroxylamine ammonium salts to azoxy compounds

Article abstract of DOI:10.1016/S0040-4039(97)10405-1

Heating of an ethanolic solution containing N-aryl-N-nitrosohydroxylamine ammonium salts at 78°C produced the desired azoxy compounds in 80-93% yields. Furthermore, irradiation with UV light (κ ≤300 nm) of ethanolic solutions of those ammonium salts at room temperature also provided the desired azoxy compounds in 51-72% yields.