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- W4298394806 abstract "While cobalt complexes have already shown their potential for C−H and C−F bond activation of fluoroarenes, their reactivity as metalating agents via Co−H exchange towards these substrates has not been explored. Herein, we report a Co(HMDS)2 [HMDS=N(SiMe3)2] system which, when synergistically enhanced via sodium amide Na(HMDS) mediation, can render chemo- and regioselective cobaltation of a series of fluoroarenes to produce a new class of homoleptic square planar [Na2CoAr4] complexes. Density functional theory calculations elucidate the key roles of the Na/Co counterparts in a stepwise sodiation/cobalt transmetalation process, leading to this novel C−H metalation. Depending on the reaction stoichiometry, this process can occur inter- or intramolecularly, furnishing transient [NaCo(HMDS)2Ar] intermediates which can undergo ligand rearrangement to afford [Na2CoAr4] with concomitant formation of Co(HMDS)2 and [NaCo(HMDS)3]." @default.
- W4298394806 created "2022-10-02" @default.
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- W4298394806 date "2022-11-07" @default.
- W4298394806 modified "2023-09-23" @default.
- W4298394806 title "Building Square Planar Cobalt (II) Complexes via Sodium Mediated Cobaltation of Fluoroarenes" @default.
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- W4298394806 doi "https://doi.org/10.1002/ange.202213246" @default.
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