Journal
ACS OMEGA
Volume 3, Issue 4, Pages 4027-4034Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.8b00239
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Funding
- JSPS KAKENHI [JP16H01035, JP16H04119]
- JSPS
- PAN under the Research Cooperative Program [AJ179063(29-9111-t11)]
- Izumi Science and Technology Foundation
- Toyota Physical and Chemical Research Institute
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The interesting redox properties and reactivity of metalloporphycene have been studied for decades; however, the detailed experimental investigation on the reactivity and reaction mechanism under inert condition combined with theoretical calculations had not been performed so far. In this study, the novel reactivity of the reduced form of the cobalt porphycene with alkyl halides to form cobalt-carbon (Co-C) bonds was revealed. Under electrochemical reductive conditions, not the central cobalt, but the ligand was reduced and reacted with alkyl halides to afford the cobalt-alkyl complexes under N-2 atmosphere in a glovebox. The reaction mechanism was clarified by the combination of experimental and theoretical studies that the porphycene ligand works as a noninnocent ligand and allows the S(N)2-type Co-C bond formation. This result provides us the possibility of the reaction triggered by the reduction of ligand with macrocyclic pi-conjugated system, not by the reduction of metal.
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