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Ruthenium Phenoxo Complexes: An Isolobal Ligand to Cp with Improved Properties

Title Ruthenium Phenoxo Complexes: An Isolobal Ligand to Cp with Improved Properties
Authors Tim Schulte, Zikuan Wang, Chen-Chen Li, Aboubakr Hamad, Felix Waldbach, Julius Pampel, Roland Petzold, Markus Leutzsch, Fritz Bahns, Tobias Ritter
Magazine Journal of the American Chemical Society
Date 05/31/2024
DOI https://doi.org/10.1021/jacs.4c02088
Introduction The activation of π-arene bonds is largely contingent on catalysts that facilitate arene exchanges. Cyclopentadiene (Cp)-derived catalysts, despite their prevalent use, suffer from low arene exchange rates. This study presents the synthesis, characterisation, and catalytic application of Ru(II) complexes with phenoxo ligands, serving as isolobal substitutes for Cp. These phenoxo complexes demonstrate arene exchange rates markedly greater than conventional Cp complexes. Selecting suitable counterions can further enhance these rates. Kinetic and computational studies provide insights into the arene exchange mechanism. The effectiveness of these catalytic systems is showcased through S NAr reactions involving fluorobenzene and alcohols, inclusive of previously unsuitable secondary alcohols. Additionally, the catalytic thermal decarboxylation of phenylacetic acids is explored.
Quote Tim Schulte, Zikuan Wang and Chen-Chen Li et al. Ruthenium Phenoxo Complexes: An Isolobal Ligand to Cp with Improved Properties. J. Am. Chem. Soc. 2024. Vol. 146(23):15825-15832. DOI: 10.1021/jacs.4c02088
Element Ruthenium (Ru)
Materials Chemical Compounds
Industry Chemical & Pharmacy
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