Search results for "Chiral column chromatography"

showing 2 items of 22 documents

Chiroptical inversion of a planar chiral redox-switchable rotaxane.

2019

Reversible redox-switching of a planar chiral [2]rotaxane with a tetrathiafulvalene-bearing crown ether macrocycle generates a complete sign reversal of the main band in the ECD spectrum, as shown by experiment and rationalised by DFT calculations.

chemistry.chemical_classificationMaterials scienceRotaxane010405 organic chemistryGeneral Chemistry547Planar chirality010402 general chemistryElectrochemistry01 natural sciences0104 chemical sciencesChiral column chromatographyCrystallographychemistry.chemical_compoundChemistry500 Naturwissenschaften und Mathematik::540 Chemie::547 Organische Chemieredox-switchablechemistryElectronic effectrotaxanechiroptical inversionEnantiomermakromolekyylitTetrathiafulvaleneCrown etherChemical science
researchProduct

Characterization of the synthetic cannabinoid MDMB-CHMCZCA

2016

The synthetic cannabinoid MDMB-CHMCZCA was characterized by various spectroscopic techniques including NMR spectroscopy and tandem mass spectrometry. The synthetic sample was found to be of S-configuration by VCD spectroscopy and comparison of the data with DFT calculations, while ECD spectroscopy was found to be inconclusive in this case. The enantiomeric purity of samples from test purchases and police seizures was assessed by a self-developed chiral HPLC method.

medicine.medical_treatmentNPS010402 general chemistryTandem mass spectrometry01 natural sciencesFull Research Paperlcsh:QD241-441lcsh:Organic chemistrymedicinelcsh:Sciencechiral HPLCSpectroscopyChromatographyChemistry010401 analytical chemistryOrganic ChemistryNuclear magnetic resonance spectroscopy0104 chemical sciencesCharacterization (materials science)Chiral column chromatographyChemistryVCD spectroscopyECD spectroscopylcsh:QCannabinoidEnantiomersynthetic cannabinoidsBeilstein Journal of Organic Chemistry
researchProduct