IrIII/NiII-Metallaphotoredox catalysis: the oxidation state modulation mechanism versus the radical mechanism.

IrIII/NiII-Metallaphotoredox catalysis: the oxidation state modulation mechanism versus the radical mechanism. Chem Commun (Camb). 2018 May 17;: Authors: Zhu B, Yan LK, Geng Y, Ren H, Guan W, Su ZM Abstract A novel oxidation state modulation mechanism, merging oxidative quenching (IrIII-*IrIII-IrIV-IrIII) and nickel catalytic (NiII-NiI-NiIII-NiI-NiII) cycles, has been illuminated unambiguously for photoredox-mediated iridium(iii)/nickel(ii) dual catalyzed C-O cross-coupling of aryl bromide and alcohol. Quinuclidine participates in a crucial proton-coupled electron transfer process to accelerate the reaction and regulate C-O coupling selectivity. PMID: 29770395 [PubMed - as supplied by publisher]
Source: Chemical Communications - Category: Chemistry Authors: Tags: Chem Commun (Camb) Source Type: research
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