Journal
ACS CATALYSIS
Volume 7, Issue 4, Pages 2810-2814Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.7b00262
Keywords
cobalt catalysis; C-H activation; C-H/N-H cross-coupling; amination; triarylamine
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Funding
- National Natural Science Foundation of China [21502173, 21672192]
- Outstanding Young Talent Research Fund of Zhengzhou University [1521316002]
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As a powerful synthetic tool for the formation of aromatic C-N bonds, the reported transition-metal-catalyzed direct C-H amination has been ineffective for the synthesis of triarylamines for a long time. Herein, an elegant strategy for the preparation of triarylamines was disclosed using inexpensive Co(OAc)(2)center dot 4H(2)O as the catalyst. It is noteworthy that unactivated arenes and simple anilines were employed as the starting materials with good functional group tolerance. In addition, an organometallic Co(III) species was isolated and identified by X-ray crystallography, thus providing some in-depth insights into the mechanism.
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