Journal
ADVANCED SYNTHESIS & CATALYSIS
Volume 362, Issue 18, Pages 3857-3863Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.202000438
Keywords
Hydrogen Isotope Exchange; Deuterium; Iridium Catalysis; N-Heterocyclic Carbenes; Weakly Coordinating Anions
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Funding
- Fonds der Chemischen Industrie (FCI)
- Deutsche Forschungsgemeinschaft (DFG) [TA 189/9-2]
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A series of neutral iridium(I) complexes of the general type [(WCA-NHC)]IrL(COD)] (COD=1,5-cyclooctadiene; L=phosphine, pyridine), bearing anionic N-heterocyclic carbenes (WCA-NHC) with a weakly coordinating anionic (WCA) borate moiety, were prepared by addition of phosphines and pyridine to [(WCA-NHC)]Ir(COD)], in which the available coordination site is stabilized by intramolecular metal-arene interaction (pi-face donation). The solvent and substrate scope of the neutral complexes as catalysts for H/D exchange was investigated, revealing their suitability for promoting efficient deuteration in nonpolar solvents such as cyclohexane.
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