Organic & Biomolecular Chemistry · 2010 · 46 citations · 62 references
Chemical EngineeringEngineeringQuaternary Stereogenic CentersQuaternary StereocentersOrganic ChemistryEffective ConstructionBranched AldehydesCatalysisChiral Proline-derived AmideChemistryStereoselective SynthesisAsymmetric CatalysisSynthetic ChemistryEnantioselective SynthesisBiomolecular Engineering
A highly efficient enantioselective α-amination of branched aldehydes with azadicarboxylates promoted by chiral proline-derived amide thiourea bifunctional catalysts was developed for the first time, affording the adducts bearing quaternary stereogenic centers with excellent yields (up to 99%) and enantioselectivities (up to 97% ee).
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Johan Franzén, Mauro Marigo, Doris Fielenbach et al. · Journal of the American Chemical Society · 2005 · 630 citations
Chemical Engineering, Alpha-diarylprolinol Silyl Ethers, Direct α-Functionalization +12