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DOI: 10.1055/sos-SD-031-01625

Rück-Braun, K.; Dietrich, S.; Kempa, S.; Priewisch, B.Science of Synthesis, (2007311457.

The condensation reactions of aromatic nitroso or nitro compounds with arylamines give access to a broader range of substituted diaryldiazenes than the coupling of diazonium salts. By condensation of arylhydrazines with quinones, hydroxy-substituted diaryldiazenes are available. Another condensation reaction furnishing diaryldiazenes not covered in this section is the reaction of aromatic N-sulfinylamines with aromatic hydroxylamines.[‌202‌]