Photocatalyst for Visible-Light-Driven Sm(II)-Mediated Reductions
Monika Tomar, Caroline Bosch, Jules Everaert, Rohan Bhimpuria, Anders Thapper, Andreas Orthaber, K. Eszter Borbas
Abstract
Commercially available coumarin 343 in combination with reducible Sm(III) ions catalyzed divalent lanthanide-mediated C═O, C-halogen, P-Cl, and N═N reductions at ambient temperature in aqueous solvent mixtures. The catalyst absorbs visible light efficiently. The active divalent species is formed by photoinduced electron transfer from coumarin 343 to the stable trivalent precursor, and the coumarin could be regenerated by strictly 1 equiv of ascorbic acid.
Topics & Concepts
PhotocatalysisChemistryVisible spectrumPhotochemistryNanotechnologyChemical engineeringCatalysisOptoelectronicsOrganic chemistryMaterials sciencePhysicsEngineeringLanthanide and Transition Metal ComplexesRadioactive element chemistry and processingPolyoxometalates: Synthesis and Applications