Transfer hydrogenation of carbon dioxide <i>via</i> bicarbonate promoted by bifunctional C–N chelating Cp*Ir complexes
Yasuhiro Sato, Yoshihito Kayaki, Takao Ikariya
Abstract
Metal-ligand cooperative Cp*Ir(iii) complexes derived from primary benzylic amines effectively promote transfer hydrogenation of atmospheric CO2 using 2-propanol at 80 °C. Isotope-labelling experiments strengthen that active Ir species can preferentially reduce bicarbonate congeners formed from CO2. The powerful transfer hydrogenation catalyst exhibits remarkable activity for the conversion of bicarbonates into formate salts with a turnover number up to 3200, even without H2 and CO2.
Topics & Concepts
BicarbonateChemistryFormateBifunctionalChelationCarbon dioxideCarbonateInorganic chemistryCarboxylateMetalCarbon fibersCatalysisOrganic chemistryMaterials scienceComposite numberComposite materialCarbon dioxide utilization in catalysisAsymmetric Hydrogenation and CatalysisCO2 Reduction Techniques and Catalysts