Abstract:
The chemical oxidation of rhodium(i) complexes [Rh(L)(COD)][BF4], where L is a ferrocenyl phosphine/N-heterocyclic carbene ligand, with 2 equiv. of a triaryl-aminium salt [(4-BrC6H4)3N][BF4] in acetonitrile gave planar chiral, air-stable [Rh(L–H)(MeCN)3][BF4]2 complexes where the ferrocene (C5H4CH2ImR or C5H4CH2BImCH2Mes) ring has been C–H activated at the position 2 in good to excellent yields. An important reactivity difference between our complexes and the ubiquitous [Cp*Rh(MeCN)3]X2 complex has been observed in the Grignard-type arylation of 4-nitrobenzaldehyde.
Keywords:
rhodium, N-heterocyclic carbenes, Ferrocene, redox active ligands, catalysis.
Citation:
J. Cabanes, M. Odnoroh, C. Duhayon, Ch. Bijani, A. Sournia-Saquet, R. Poli, A. Labande, “Oxidation-promoted synthesis of ferrocenyl planar chiral rhodium(iii) complexes for C–H functionalization catalysis”, Mendeleev Commun., 31:5 (2021), 620–623
Linking options:
https://www.mathnet.ru/eng/mendc1002
https://www.mathnet.ru/eng/mendc/v31/i5/p620
This publication is cited in the following 2 articles:
Petr Štěpnička, “Forever young: the first seventy years of ferrocene”, Dalton Trans., 51:21 (2022), 8085
K. E. Shepelenko, K. A. Nikolaeva, M. A. Shevchenko, Yu. N. Tkachenko, M. E. Minyaev, V. M. Chernyshev, “Ruthenium complexes with chelating carboxylate-NHC ligands as efficient catalysts for C–H arylation in water”, Mendeleev Commun., 32:2 (2022), 205–207
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