2.7-Diazapyrene (4), which was recently synthesized (21 for the first time and by a theoretically interesting route, together with its bis(N-methy1)quaternary salt ( 5 ) were required for a study of the redox behavior of quaternary polynuclear heteroaromatic compounds [I]. We now report a synthesis giving good yields of both compounds.
Es wird die oxydative Kupplung der Hydrazone I–VII1), die sich vom Pyrazol, Imidazol, 1.2.4‐Triazol, Tetrazol sowie vom 1.2.4‐ und 1.3.4‐Thiodiazol ableiten, mit 1‐Hydroxy‐naphthoesäure‐(2)‐anilid und 4‐Acetamino‐diphenylamin beschrieben. Die Spektren der entstehenden Farbstoffe werden diskutiert.
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