Transition-Metal-Free Catalysis for the Reductive ­Functionalization of CO2 with Amines

摘要: Reductive functionalization of CO2 with amines and a reductant, which combines both reduction C–N bond formation in one pot to produce versatile chemicals energy-storage materials such as formamides, aminals, methylamines that are usually derived from petroleum feedstock, would be appealing promising. Herein, we give brief review on recent developments the titled chemistry by employing transition-metal-free catalysis, can catalogued below according diversified energy content products, is being consistent 2-, 4-, 6-electron CO2, respectively. Notably, hierarchical afford at least two for example, formamides methylamines, could realized same catalyst through tuning hydrosilane type, reaction temperature, or pressure. Finally, opportunities challenges reductive also highlighted. 1 Introduction 2 2-Electron Reduction Formamide 3 6-Electron Methylamine 4 4-Electron Aminal 5 Hierarchical Amines 6 Conclusion