Oxidation-promoted synthesis of ferrocenyl planar chiral rhodium(iii) complexes for C–H functionalization catalysis

[Display omitted] 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 f...

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Bibliographic Details
Published in:Mendeleev communications 2021-09, Vol.31 (5), p.620-623
Main Authors: Cabanes, Julien, Odnoroh, Maksym, Duhayon, Carine, Bijani, Christian, Sournia-Saquet, Alix, Polia, Rinaldo, Labande, Agnès
Format: Article
Language:English
Subjects:
catalysis
Chemical Sciences
Coordination chemistry
Ferrocene
N-heterocyclic carbenes
redox active ligands
rhodium
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Summary:[Display omitted] 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.
ISSN:0959-9436
1364-551X
DOI:10.1016/j.mencom.2021.09.010