Frontispiece: Photoinduced, Direct C(sp2)−H Bond Azo Coupling of Imidazoheteroarenes and Imidazoanilines with Aryl Diazonium Salts Catalyzed by Eosin Y

A sustainable visible‐light‐mediated, eosin Y catalyzed azo coupling of imidazoheteroarenes and ‐anilines with aryl diazonium salts was achieved successfully, under acid‐free conditions. This photoredox direct C(sp2)−H bond azo coupling protocol features high efficiency, good functional group tolera...

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Bibliographic Details
Published in:Chemistry : a European journal 2020-04, Vol.26 (20), p.n/a
Main Authors: Saba, Sumbal, Dos Santos, Caio R., Zavarise, Bruno R., Naujorks, Aline A. S., Franco, Marcelo S., Schneider, Alex R., Scheide, Marcos R., Affeldt, Ricardo F., Rafique, Jamal, Braga, Antonio L.
Format: Article
Language:English
Subjects:
Aniline
Aromatic compounds
aryl diazonium salts
Chemistry
Coupling
diazo
eosin Y-Na2
Functional groups
Heterocyclic compounds
Hydrogen bonds
imidazoheteroarenes
Salts
sustainable chemistry
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Summary:A sustainable visible‐light‐mediated, eosin Y catalyzed azo coupling of imidazoheteroarenes and ‐anilines with aryl diazonium salts was achieved successfully, under acid‐free conditions. This photoredox direct C(sp2)−H bond azo coupling protocol features high efficiency, good functional group tolerance and easy scalability. Important contribution of this transformation involves the mildness of the reaction conditions as well as the potential therapeutic application of the obtained diazo based heterocyclic compounds. More information can be found in the Communication by S. Saba, J. Rafique, A. L. Braga et al. on page 4461 ff.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.202082063