0000000000480663

AUTHOR

Volker Bo¨hmer

showing 2 related works from this author

One-step synthesis of resorcarene dimers composed of two tetra-benzoxazine units

1998

Abstract The condensation of resorcarene 1 with ethylenediamine and an excess of formaldehyde gives, under high dilution conditions, in up to 15% yield the octa-benzoxazine dimer 2 in which two molecules of 1 are connected by four bridges. The structure of 2 has been confirmed by 1 H NMR spectra and MALDI-TOF mass spectra and by hydrolysis of the oxazine rings yielding the secondary amine 3 .

biologyDimerOrganic ChemistryEthylenediamineResorcinarenebiology.organism_classificationBiochemistrychemistry.chemical_compoundchemistryDrug DiscoveryPolymer chemistryMass spectrumProton NMROrganic chemistryTetraMoleculeAmine gas treatingTetrahedron Letters
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Resolution of inherently chiral resorcarene derivatives by enantioselective HPLC

1999

Abstract The HPLC enantiomeric resolution of five inherently chiral tetrabenzoxazine derivatives of resorcarenes has been achieved by HPLC using Whelk-Ol and in one case Chiralpak AD as stationary phases. Enantiomeric separation was only observed in a very narrow range of mobile phase compositions. On-column enantiomeric interconversion of a racemic compound with a typical plateau-like elution profile was observed using a Chiralpak AD column

ChromatographyResolution (mass spectrometry)ElutionChemistryOrganic ChemistryDrug DiscoveryNarrow rangeChiralpak ADEnantiomerResorcinareneBiochemistryEnantioselective hplcHigh-performance liquid chromatographyTetrahedron Letters
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