Recycling of Rare Earth Elements: From E-Waste to Stereoselective Catalytic Reactions.

ABSTRACT: Raw mixtures of Rare Earths Elements, REE, recovered by E-waste, were used as catalysts to promote the (stereoselective) synthesis of highly valuable compounds. Y₂O₃, the major species that is recovered by the E-waste, can be easily converted into the catalytically active Y(OTf)₃ that is able to efficiently promote the Michael addition of indoles to benzylidene malonates and the stereoselective Diels-Alder cycloaddition between cyclopentadiene and 4-(S)-3 acryloyl 4-tert-butyl 2-oxazolidinone. Additionally, the raw mixtures were immobilissed onto silica and used to construct packed reactors, resulting in values for Productivity and Space-Time Yields that were significantly higher than those of the corresponding batch conversions. Notably, the prepared cartr

SUBMITTER: Donato E 

PROVIDER: S-EPMC11789994 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature