Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 135, Issue 24, Pages 8802-8805Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja4033555
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Funding
- Alexander von Humboldt Foundation
- International NRW Graduate School of Chemistry
- European Research Council (ERC) under the European Community [25936]
- Alfried Krupp von Bohlen und Halbach Foundation
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Substituted 1H-indazoles can be formed from readily available arylimidates and organo azides by Rh-III-catalyzed C-H activation/C-N bond formation and Cu-catalyzed N-N bond formation. For the first time the N-H-imidates are demonstrated to be good directing groups in C-H activation, also capable of undergoing intramolecular N-N bond formation. The process is scalable and green, with O-2 as the terminal oxidant and N-2 and H2O formed as byproducts. Moreover, the products could be transformed to diverse important derivatives.
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