Eine allgemeine Umlagerung von Heterocyclen und neue Synthesen des Benzotriazol‐, Benzofurazan‐ und Anthranil‐Systems

Thermal and base-induced rearrangements of furoxanylketones phenylhydrazones

“…As a rule, they are initiated thermally or in the presence of bases; in a number of cases, these reactions are reversible. Similar rearrangements in the series of furoxanes were examined by the case of benzofuroxans [7][8][9] (the Boulton-Katritzky rearrangement). However, of noncondensed furoxan derivatives, only oximes [10][11][12][13] have been shown to undergo mononuclear heterocyclic rearrangements.…”