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1. Photoinduced, Direct C(sp 2 )−H Bond Azo Coupling of Imidazoheteroarenes and Imidazoanilines with Aryl Diazonium Salts Catalyzed by Eosin Y

Author

Caio R. Dos Santos, Bruno R. Zavarise, Sumbal Saba, Alex R. Schneider, Marcos R. Scheide, Marcelo S. Franco, Antonio L. Braga, Ricardo F. Affeldt, Aline A. S. Naujorks, and Jamal Rafique

Subjects
Eosin, 010405 organic chemistry, Hydrogen bond, Aryl, Organic Chemistry, General Chemistry, Azo coupling, 010402 general chemistry, 01 natural sciences, Catalysis, 0104 chemical sciences, chemistry.chemical_compound, Aniline, chemistry, Polymer chemistry, Diazo, Eosin Y
Abstract

Herein, a greener approach to the eosin Y-Na2 catalyzed, C(sp2 )-H bond azo coupling of imidazoheteroarene with aryl diazonium salts is described, under acid free conditions. This direct photoredox process resulted in the corresponding azo products in good to excellent yields. Besides, this new approach could also be applicable to anilines, which is a poorly reactive substrate by other methods. The main features of this reaction are that it provides high yields and is gram-scalable and applicable to biologically relevant imidazoheteroarenes and -anilines.

Published
2020
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3. Photoinduced, Direct C(sp

Author

Sumbal, Saba, Caio R, Dos Santos, Bruno R, Zavarise, Aline A S, Naujorks, Marcelo S, Franco, Alex R, Schneider, Marcos R, Scheide, Ricardo F, Affeldt, Jamal, Rafique, and Antonio L, Braga

Abstract

Herein, a greener approach to the eosin Y-Na

Published
2019

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