Study of the Wallach rearrangement in the phenylazoxypyridine series. Differing reactivity of α- and β-azoxy isomers
Abstract
The rearrangement of 4-(phenyl-β-azoxy)pyridine to 4-hydroxyphenylazopyridine has been investigated in H2SO4 media under conditions where the α-azoxy isomer is virtually unreactive; a mechanism involving a tricationic reaction intermediate is proposed