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Updated: Mar 16, 2026

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Asymmetric dimerization of aniline-ruthenium-dioxolene complex driven by stepwise PCET.
T Kikuchi1, K Kobayashi, K Tsuge
1Institute for Integrated Cell-Material Sciences, Kyoto University, 105 Jibu-cho, Fushimi-ku, Kyoto 612-8374, ACT Kyoto #507, Japan. koji.tanaka@icems.kyoto-u.ac.jp.
Base-assisted oxidation of an aniline-ruthenium-quinone complex generates an anilinyl radical-ruthenium-semiquinone. Further oxidation leads to selective intermolecular C-N bond formation via coupling at the anilinyl ligand
Area of Science:
- Organometallic Chemistry
- Organic Synthesis
- Catalysis
Background:
- Ruthenium complexes are versatile catalysts in organic synthesis.
- Aniline and quinone derivatives are important organic building blocks.
- Controlled oxidation is key to selective bond formation.
Purpose of the Study:
- To investigate the base-assisted oxidation of an aniline-ruthenium-quinone complex.
- To explore the formation of radical intermediates.
- To achieve selective intermolecular C-N bond formation.
Main Methods:
- Synthesis of an aniline-ruthenium-quinone complex.
- Controlled base-assisted oxidation reactions.
- Spectroscopic characterization of intermediates and products.
Main Results:
- The oxidation generated an anilinyl radical-ruthenium-semiquinone species.
- Further oxidation promoted intermolecular coupling.
- Selective C-N bond formation occurred at the para-position of the anilinyl ligand.
Conclusions:
- Base-assisted oxidation provides a route to radical intermediates in Ru complexes.
- This method enables selective intermolecular C-N coupling.
- The study demonstrates a novel synthetic strategy for functionalized anilines.
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