Results 131 to 140 of about 691,764 (293)

Rapid Enantiomeric Excess Measurements of Enantioisotopomers by Molecular Rotational Resonance Spectroscopy. [PDF]

Org Process Res Dev, 2023
Sonstrom RE, Vang ZP, Scolati HN, Neill JL, Pate BH, Clark JR.   +5 more
europepmc   +1 more source

Silent Partners in the Mill: Unveiling the Role of Additives in Mechanochemical Synthesis

Chemistry – A European Journal, EarlyView.
Mechanochemistry offers a sustainable, solvent‐free alternative to traditional synthesis, often enhanced by additives in a process known as additive‐assisted grinding. This review discusses how various additives, including liquids, ionic solids, and advanced materials like ionic liquids and piezoelectric compounds, improve reaction efficiency ...
Johanna Breinsperger, Nika Podlesnik, Francesco Mele, Michael Schnürch   +3 more
wiley   +1 more source

Transannular O‐Heterocyclization Reactions of Cyclododeca‐1,5,9‐triene Derivatives: A New Concept for the Preparation of Key Intermediates for Total Syntheses of Annonaceous Acetogenins

Helvetica Chimica Acta, EarlyView.
Four stereogenic centers are formed diastereoselectively in one step from a cyclic (E,E)‐1,5‐diene system using an electrophilic addition reaction. Subsequent ozonolytic cleavage of the intact Z‐double bond, followed by intramolecular nucleophilic substitution, yields an octahydroterfurandione with a threo,cis,threo configuration, an arrangement found ...
Holger Schimanski, André Streiter, Micheline May, Oliver Mimkes, Johannes van Kempen, Constantin Daniliuc, Günter Haufe   +6 more
wiley   +1 more source

Asymmetric transformation of achiral gold nanoclusters with negative nonlinear dependence between chiroptical activity and enantiomeric excess. [PDF]

Nat Commun, 2023
Liu C, Zhao Y, Zhang TS, Tao CB, Fei W, Zhang S, Li MB.   +6 more
europepmc   +1 more source

Reaction-noise induced homochirality

, 2006
Starting from the chemical master equation, we employ field theoretic techniques to derive Langevin-type equations that exactly describe the stochastic dynamics of the Frank chiral amplification model with spatial diffusion.
Amit, Avalos, Avalos, Avetisov, Buhse, David Hochberg, Doi, Epstein, Frank, Gutman, Hochberg, Howard, Kondepudi, María-Paz Zorzano, Mason, Peliti, Rivera Islas, Todorović, Täuber   +18 more
core   +1 more source

Molecular imprinting for neurology: Materials, applications, and limitations

Ibrain, EarlyView.
Molecularly imprinted materials: diagnostic, therapeutic and research applications in neurology. Molecularly imprinted materials offer high specificity and affinity for target molecules in neurological applications. This review highlights their synthesis, characterisation, and use in diagnostics, research and therapeutics.
Xiaohan Ma, Yingqi Ma, Claudia Marino, Alessandro Poma   +3 more
wiley   +1 more source

Life's Chirality From Prebiotic Environments

, 2012
A key open question in the study of life is the origin of biomolecular homochirality: almost every life-form on Earth has exclusively levorotary amino acids and dextrorotary sugars. Will the same handedness be preferred if life is found elsewhere?
Gleiser, Marcelo, Walker, Sara Imari
core   +1 more source

CHIRAL TAGGING OF VERBENONE WITH 3-BUTYN-2-OL FOR ESTABLISHING ABSOLUTE CONFIGURATION AND DETERMINING ENANTIOMERIC EXCESS [PDF]

, 2017
Kevin Mayer, G.S. Grubbs, F. E. Marshall, Galen Sedo, Brooks H. Pate, Channing West, Taylor Smart, Martin Holdren, Luca Evangelisti   +8 more
openalex   +1 more source

Enhancing Crystallinity of Electrospun Polylactic Acid Fibers: Insights into Formation Mechanisms and Property Modulation–A Review

Macromolecular Materials and Engineering, EarlyView.
Controlled processing, nucleating agents, and monitored post‐treatments improve electrospun PLA nanofiber crystallinity. Additionally, stereocomplexation of PLLA and PDLA further enhances this property. Together, these strategies enable scalable, sustainable fabrication of high‐performance PLA nanofibers, expanding their applicability across industrial,
Kardo Khalid Abdullah, Kolos Molnár
wiley   +1 more source

Determination of Enantiomeric Excess and Diastereomeric Excess via Optical Methods. Application to α-methyl-β-hydroxy-carboxylic acids. [PDF]

Org Chem Front, 2023
Moor SR, Howard JR, Herrera BT, McVeigh MS, Marini F, Keatinge-Clay AT, Anslyn EV.   +6 more
europepmc   +1 more source