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How Important is the Inert Matrix of Supported Enantiomeric Catalysts? Reversal of Topicity with Two Polystyrene Backbones
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EngineeringOrganic ChemistryChemistrySupported Enantiomeric CatalystsChemical EngineeringNovel OrganocatalystsOrganometallic CatalysisHomogeneous CatalysisStereoselective SynthesisPolymer ChemistryMaterials ScienceCross-coupling ReactionInert MatrixCatalysisStereochemical OutcomePolymeric BackboneAsymmetric CatalysisEnantioselective SynthesisPolystyrene BackbonesMonolithic Ti-taddolate Catalysts
Monolithic Ti-TADDOLate catalysts (see picture) prepared by polymerization or grafting show a long-term stability (several months). The polymeric backbone can play a central role in determining the stereochemical outcome of the Diels – Alder reaction between cyclopentadiene and 3-crotonoyl-1,3-oxazolin-2-one.