期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 26, 期 20, 页码 4461-4466出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201905308
关键词
aniline; aryl diazonium salts; diazo; eosin Y-Na-2; imidazoheteroarenes; sustainable chemistry
资金
- CAPES [001]
- CNPq [433896/2018-3]
- CERSusChem GSK/FAPESP [2014/50249-8]
- INCT-Catalise
- FAPESC-Pronex
- CNPq
Herein, a greener approach to the eosin Y-Na-2 catalyzed, C(sp(2))-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.
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