A tandem process of multiple C–H activation and intermolecular highly meta-selective C–H amination between amidines and alkynes has been developed. Mechanistic studies demonstrate that the reaction is proposed to proceed through two different Rh(I)–Rh(III) catalytic cycles, wherein Rhodium-complex I and Rhodacycle intermediate II were isolated for the first time.
F. Xu, Y. Song, W. Zhu, C. Liu, Y. Lu and M. Du, Chem. Commun., 2020, 56, 11227 DOI: 10.1039/D0CC04885B
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