13921-68-1Relevant articles and documents
Studies on the Reactivity of Azoxybenzenes. Part 12. αβ-Interconversion of para-Monosubstituted Azoxybenzenes in the Wallach Rearrangement
Yamamoto, Jiro,Aimi, Hironori,Masuda, Yasuko,Sumida, Takashi,Umezo, Masahiro,Matuura, Teruo
, p. 1565 - 1568 (2007/10/02)
Under the reaction conditions for the Wallach rearrangement, 4-methyl-ONN-(1α), 4-methyl-NNO-(1β), 4-nitro-ONN-(2α), and 4-nitro-NNO-azoxybenzene (2β) were found to undergo αβ-interconversion, while 4-bromo-ONN-(3α) and 4-bromo-NNO-azoxybenzene (3β) do not.The αβ-interconversion occurs with both mono- and di-protonated forms of the azoxybenzenes.