29 research outputs found
Preparation of C2-Symmetric Biaryl Bisiminium Salts and Their Use as Organocatalysts for Asymmetric Epoxidation
Get PDFTwo C2-symmetric bisiminium salt species containing biphenylazepinium units and derived from two chiral diamines were prepared and tested as organocatalysts for asymmetric epoxidation
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Cyclic sulfoxides as chiral auxiliaries in organic synthesis
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In situ generation of o-Iodoxybenzoic acid (IBX) in the presence of tetraphenylphosphonium monoperoxysulfate (TPPP) for the conversion of primary alcohols into the corresponding aldehydes
No full textA Rapid and Highly Diastereoselective Synthesis of Enantiomerically Pure (4R,5R)- and (4S,5S)- iso-cytoxazone
Get PDFA three-step protocol for the highly diastereoselective (>98%) synthesis of both (4R,5R)- and (4S,5S)-isocytoxazone from d- or l-tyrosine is reported. The diastereoselection was confirmed by X-ray crystallography. This synthesis is currently the highest yielding approach towards these enantiomerically pure biologically active oxazolidinones
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Applications of chiral sulfoxides as stereocontrol elements in organic synthesis
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The preparation and first application of a polymer-supported "Evans" oxazolidinone
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