Cationic Titanocene(III) Complexes for Catalysis in Single-Electron Steps

By exploiting solvent and anion effects, [Cp2Ti]+ complexes for atom‐economical catalysis in single‐electron steps were developed and applied for the first time. These complexes constitute remarkably stable and active catalysts for radical arylations. The reaction kinetics and catalyst composition w...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2015-06, Vol.54 (24), p.7003-7006
Main Authors: Gansäuer, Andreas, Hildebrandt, Sven, Michelmann, Antonius, Dahmen, Tobias, von Laufenberg, Daniel, Kube, Christian, Fianu, Godfred D., Flowers II, Robert A.
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Cationic
cyclic voltammetry
electron transfer
Electrons
homogeneous catalysis
Infrared radiation
radical reactions
Radicals
Solvents
Spectroscopy
titanium
Tuning
Voltammetry
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Summary:By exploiting solvent and anion effects, [Cp2Ti]+ complexes for atom‐economical catalysis in single‐electron steps were developed and applied for the first time. These complexes constitute remarkably stable and active catalysts for radical arylations. The reaction kinetics and catalyst composition were studied by cyclic voltammetry and in situ IR spectroscopy. Much simpler surrogate: [Cp2Ti]+ is a stable and active catalyst for radical arylation proceeding through catalysis in single‐electron steps. Its use renders ring substitution for redox tuning obsolete.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201501955