Iridium-catalyzed H/D exchange : ligand complexes with improved efficiency and scope

Parmentier, Michael and Hartung, Thomas and Pfaltz, Andreas and Muri, Dieter. (2014) Iridium-catalyzed H/D exchange : ligand complexes with improved efficiency and scope. Chemistry - A European Journal, 20 (36). pp. 11496-11504.

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Official URL: http://edoc.unibas.ch/dok/A6337604

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Hydrogen isotope exchange (HIE) is one of the most attractive tools for the introduction of deuterium or tritium to an organic compound. Herein, iridium complexes with N,P-ligands, highly active catalysts for asymmetric double bond reductions, have been tested for their HIE capabilities. Electron-rich ligands, containing dicyclohexylphosphines or phosphinites, have been identified as excellent ligands for efficient deuterium incorporation. Substrates with strong directing groups, that is, pyridines, ketones, and amides, as well as weak ligating units, such as, nitro, sulfones, and sulfonamides, could be labeled efficiently. With the addition of tris(pentafluorophenyl) borane to the reaction mixture, also highly deactivating nitrile substituents were well tolerated in the reaction. Based on the excellent results obtained with the chiral ThrePhox ligand, a structurally simpler, achiral ligand was developed. The iridium complex containing this ligand, proved to be a powerful catalyst for HIE reactions.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Former Organization Units Chemistry > Synthetische organische Chemie (Pfaltz)
UniBasel Contributors:Pfaltz, Andreas
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:10 Apr 2017 08:42
Deposited On:06 Feb 2015 09:59

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