Determination of Enantiomeric Excess by Solid-Phase Extraction Using a Chiral Metal-Organic Framework as Sorbent. [PDF]
Molecules, 2018 Zhang JH +7 more
europepmc +3 more sources
Accurate Determination of Enantiomeric Excess Using Raman Optical Activity [PDF]
Symmetry, 2022 The optical purity of a chiral sample is of particular importance to the analytical chemistry and pharmaceutical industries. In recent years, the vibrational optical activity (VOA) has become established as a sensitive and nondestructive technique for the analysis of chiral molecules in solution. However, the relatively limited accuracy in the range of
Pavel Michal +5 more
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A Racemic Naphthyl-Coumarin-Based Probe for Quantitative Enantiomeric Excess Analysis of Amino Acids and Enantioselective Sensing of Amines and Amino Alcohols. [PDF]
ChemistryOpen, 2022 Li JY +8 more
europepmc +2 more sources
High Throughput Enzymatic Enantiomeric Excess: Quick-ee
Journal of the Brazilian Chemical Society, 2014 High throughput techniques to evaluate enantiomeric excess (ee) and enantiomeric ratio (E) of enzymatic reactions are fast and efficient tools that can be applied large quantities of enzymes, microorganisms and clones. The Quick-ee technique proposed in this study produces the ee and conversion values separately.
Maria Lima +4 more
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A note on the Noyori model for chiral amplification in the aminoalcohol-catalyzed reaction of aldehydes with dialkylzinc [PDF]
Journal of the Serbian Chemical Society, 1999 The Noyori model of chiral amplification in the alkylation of aldehydes by means of dialkylzinc, catalyzed by chiral aminoalcohols, is further elaborated.
Gutman Ivan
doaj +3 more sources
Importance of molecular symmetry for enantiomeric excess recognition by NMR [PDF]
Chemical Communications, 2022 Porphyrins with an exposed inner core N–H system respond to a chiral guest with exceptionally sensitive enantiomeric excess detection.
Karolis Norvaiša +5 more
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ENANTIOMERIC EXCESS MEASUREMENTS USING MICROWAVE THREE-WAVE MIXING [PDF]
Proceedings of the 73rd International Symposium on Molecular Spectroscopy, 2018 Martin Holdren +9 more
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Determination of Enantiomeric Excess in Confined Aprotic Solvent. [PDF]
ACS ElectrochemThe validation of the stereochemical purity of synthesized compounds is a requisite for the fine-chemical industry, particularly in the production of enantiopure drug compounds. However, most methodologies employed in the determination of enantiopurity require carefully chosen chiral GC or HPLC columns, increasing associated cost, analysis time, and ...
Farrell EB +5 more
europepmc +2 more sources
Enantiomeric excess by magnetic circular dichroism in Archaean atmosphere. [PDF]
Sci Rep, 2017 AbstractEvolution of homochirality requires an initial enantiomeric excess (EE) between right and left-handed biomolecules. We show that magnetic circular dichroism (MCD) of sun’s ultraviolet C light by oxygen in Archaean earth’s anoxic atmosphere followed by chirally selective damage of biomolecules due to circular dichroism (CD) can generate EE of ...
Sharma A.
europepmc +4 more sources
Scientific Reports, 2021 Numerous terpenes present in essential oils (EOs) display one or more chiral centers. Within the same genus the enantiomeric ratio of these compounds can be different. Thus, the determination of enantiomers is a valuable tool to evaluate authenticity and
Martina Allenspach +3 more
doaj +1 more source