Organic Letters · 2009 · 144 citations · 0 references
Asymmetric EpoxidationInorganic ChemistryChemical EngineeringChiral Tetradentate NEngineeringNovel SeriesAlkene MetathesisNovel OrganocatalystsManganese ComplexesOrganic ChemistryOrganometallic CatalysisCatalysisChemistryAsymmetric CatalysisEnantioselective Synthesis
A novel series of chiral tetradentate N(4) ligands together with their manganese complexes have been designed and synthesized. With 1 mol % manganese catalyst loading, the enantioselective epoxidation of olefins proceeds with nearly full conversion and enantiomeric excess values of up to 89 % for the first time.