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31.25.1.1.8.4 Method 4: Palladium-Catalyzed Cross-Coupling Reactions

DOI: 10.1055/sos-SD-031-01625

Rück-Braun, K.; Dietrich, S.; Kempa, S.; Priewisch, B.Science of Synthesis, (2007311499.

Palladium-catalyzed cross-coupling reactions of bromo- and iododiaryldiazenes allow CC bond formation at the aromatic rings of diaryldiazenes. Heck reactions of bromo-functionalized diaryldiazenes with styrenes using palladium(II) acetate as a catalyst in the presence of triphenylphosphine and triethylamine as a base at 100110°C afford (arylvinyl)diaryldiazenes 212 in fair to good yields (Scheme 107).[‌443‌] The reaction may also be conducted in pure triethylamine.

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