Results 31 to 40 of about 5,957 (202)
Molecules, 2013 Enantioseparation is largely based on the formation of transitional complexes, the solvation species, the stationary phase configurations or the diastereomeric complexes formed by analytes and the chiral stationary phase.
Hong-Xun Guo, Steven Wu, Jingshun Sun
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Molecules, 2023 The enantioselective potential of two macrocyclic glycopeptide-based chiral stationary phases for analysis of 28 structurally diverse biologically active compounds such as derivatives of pyrovalerone, ketamine, cathinone, and other representatives of ...
Denisa Folprechtová +3 more
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Journal of Pharmaceutical Analysis, 2012 The enantiomers separation of thirteen drugs collected in Ch.P2010 was performed on chiral stationary phase of cellulose ramification (chiralpak OD and chiralpak OJ) by high performance liquid chromatographic (HPLC) methods, which included ibuprofen (C1),
Ying Zhou +7 more
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Angewandte Chemie, EarlyView.We report on a suitable approach to predict the chirality “strength” and efficacy of chirality transfer from chiral nanoshape solutes to an achiral discotic nematic (ND) liquid crystal solvent. Highly efficacious chirality transfer based on shape commensurability between nanoshape solute (in the form of gold nanodiscs, GNDs) and a ND solvent was ...
Gourab Acharjee +10 more
wiley +2 more sources
The Separation of Cannabinoids on Sub-2 µm Immobilized Polysaccharide Chiral Stationary Phases
Pharmaceuticals, 2021 The increased use and applicability of Cannabis and Cannabis-derived products has skyrocketed over the last 5 years. With more and more governing bodies moving toward medical and recreational legalization, the need for robust and reliable analytical ...
Takafumi Onishi, Weston J. Umstead
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Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations
Angewandte Chemie, EarlyView.Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera +2 more
wiley +2 more sources
Angewandte Chemie, EarlyView.A catalytic network embedding a formal rearrangement enables the first catalytic enantioselective multicomponent reaction (MCR) of sulfur ylides. In the presence of a bulky chiral phosphoric acid, the reaction combines sulfoxonium ylides, aldehydes and thiols, and affords synthetically versatile β‐hydroxy‐α‐sulfanyl carbonyl compounds in ...
Nicolò Santarelli +10 more
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Green Analytical ChemistryA novel chiral monolithic nano-column was developed for the enantioseparation of chiral drugs by nano-liquid chromatography (nano-LC). The monolithic capillary with 50 µm i.d. was first prepared by an in-situ polymerization using butyl methacrylate (BuMA)
Cemil Aydoğan
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Aldol Reactions of Axially Chiral 5-Methyl-2-(o-aryl)imino-3-(o-aryl)-thiazolidine-4-ones
Molecules, 2016 Axially chiral 5-methyl-2-(o-aryl)imino-3-(o-aryl)-thiazolidine-4-ones have been subjected to aldol reactions with benzaldehyde to produce secondary carbinols which have been found to be separable by HPLC on a chiral stationary phase.
Sule Erol Gunal, Ilknur Dogan
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Asymmetric Iron‐Catalyzed Vicinal C(sp3)─H Diamination of Carboxylic Acids
Angewandte Chemie, EarlyView.An iron‐catalyzed vicinal α,β‐C(sp3)─H diamination of readily available carboxylic acids furnishes chiral α,β‐diamino acids in a single pot with high regio‐, diastereo‐, and enantioselectivity (up to >20:1 dr and >99% ee). ABSTRACT The direct construction of chiral 1,2‐diamines through the stereoselective functionalization of two vicinal C(sp3)─H bonds
Bing Zhou +5 more
wiley +2 more sources