Iridium(NHC)-Catalyzed Sustainable Transfer Hydrogenation of CO2 and Inorganic Carbonates

Iridium(NHC)-catalyzed transfer hydrogenation (TH) of CO2 and inorganic carbonates with glycerol were conducted, demonstrating excellent turnover numbers (TONs) frequencies (TOFs) for the formation formate lactate. Regardless carbon sources, TOFs observed (CO2: 10,000 h?1 K2CO3: 10,150 h?1). Iridium catalysts modified triscarbene ligand showed catalytic activity at 200 °C are a suitable choice this transformation which requires high temperature TONs formate. On basis control experiments, mechanism was proposed.