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Synthesis of 1H‑Indazoles from Imidates and Nitrosobenzenes via Synergistic Rhodium/Copper Catalysis

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posted on 15.04.2016, 16:03 by Qiang Wang, Xingwei Li
Nitrosobenzenes have been used as a convenient aminating reagent for the efficient synthesis of 1H-indazoles via rhodium and copper catalyzed C–H activation and C–N/N–N coupling. The reaction occurred under redox-neutral conditions with high efficiency and functional group tolerance. Moreover, a rhodacyclic imidate complex has been identified as a key intermediate.