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DOI: 10.1055/sos-SD-031-01625

Rück-Braun, K.; Dietrich, S.; Kempa, S.; Priewisch, B.Science of Synthesis, (2007311452.

Several routes can be taken toward compounds with more than one diazene moiety. Additional azo groups can be present in diazonium salts and/or coupling components or a bis- or polydiazonium salt might be used. An additional amino group in either part of a diazene can be further diazotized and coupled. In these coupling reactions, the observations made in the sections above essentially apply. Furthermore, coupling of diazonium ions with arene-containing oligomers or polymers and polymerization of diazonium salts or diazene-containing monomers can lead to polyazo compounds. Owing to the complexity of the structures involved and the similarity to monocoupling reactions, this section only exemplifies these approaches. Reactions with coupling components containing aryldiazene moieties are covered in Section

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