Determination of Enantiomeric Excess by Optofluidic Microlaser near Exceptional Point [PDF]
Advanced Science, 2023 Enantiomeric excess (ee) is an essential indicator of chiral drug purification in the pharmaceutical industry. However, to date the ee determination of unknown concentration enantiomers generally involves two separate techniques for chirality and ...
Zhiyang Xu +6 more
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Inducing transient enantiomeric excess in a molecular quantum racemic mixture with microwave fields [PDF]
Nature Communications, 2023 There is growing interest in controlling and manipulating molecules using external field. Here the authors demonstrate microwave induced transient enantiomeric excess in a state-selective benzyl alcohol using microwave six-wave mixing.
Wenhao Sun +5 more
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Prebiotic formation of enantiomeric excess D-amino acids on natural pyrite [PDF]
Nature CommunicationsD-amino acids, found in excess in a minority of organisms and crucial for marine invertebrates, contrast with the more common L-amino acids in most life forms.
Ruiqi Li +5 more
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Green Multi-Platform Solution for the Quantification of Levodopa Enantiomeric Excess in Solid-State Mixtures for Pharmacological Formulations [PDF]
Molecules, 2021 The aim of the present work was to develop a green multi-platform methodology for the quantification of l-DOPA in solid-state mixtures by means of MIR and NIR spectroscopy.
Alessandra Biancolillo +3 more
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Amplification of enantiomeric excess by dynamic inversion of enantiomers in deracemization of Au38 clusters [PDF]
Nature Communications, 2020 Symmetry breaking and amplification processes play a fundamental role in nature and technology. Here, the authors show that the interplay between racemization and ligand exchange leads to amplification of enantiomeric excess of intrinsically chiral metal
Yanan Wang +2 more
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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.
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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
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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
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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
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2D Ising Model for Enantiomer Adsorption on Achiral Surfaces: L- and D-Aspartic Acid on Cu(111)
Entropy, 2022 The 2D Ising model is well-formulated to address problems in adsorption thermodynamics. It is particularly well-suited to describing the adsorption isotherms predicting the surface enantiomeric excess, ees, observed during competitive co-adsorption of ...
Soham Dutta, Andrew J. Gellman
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