Results 61 to 70 of about 10,075 (214)

Visualization of enantiorecognition by excited-state conformation modulation

Nature Communications
Chiral purity is crucial in life sciences, emphasizing the importance of precise enantiomeric identification and the development of analytical techniques.
Zizhao Huang, Ying Hu, Jie Sun, Zhenyi He, Tao Jiang, He Tian, Xiang Ma   +6 more
doaj   +1 more source

Chiral and Molecular Recognition through Protonation between Aromatic Amino Acids and Tripeptides Probed by Collision-Activated Dissociation in the Gas Phase

Molecules, 2018
Chiral and molecular recognition through protonation was investigated through the collision-activated dissociation (CAD) of protonated noncovalent complexes of aromatic amino acid enantiomers with l-alanine- and l-serine-containing tripeptides using a ...
Akimasa Fujihara, Hikaru Inoue, Masanobu Sogi, Michiko Tajiri, Yoshinao Wada   +4 more
doaj   +1 more source

CALB Immobilized onto Magnetic Nanoparticles for Efficient Kinetic Resolution of Racemic Secondary Alcohols: Long-Term Stability and Reusability

Molecules, 2019
In this study, an immobilization strategy for magnetic cross-linking enzyme aggregates of lipase B from Candida antarctica (CALB) was developed and investigated. Magnetic particles were prepared by conventional co-precipitation.
Xiu Xing, Jun-Qi Jia, Jing-Fan Zhang, Zi-Wen Zhou, Jun Li, Na Wang, Xiao-Qi Yu   +6 more
doaj   +1 more source

Generation of amine dehydrogenases with increased catalytic performance and substrate scope from ε-deaminating L-Lysine dehydrogenase

Nature Communications, 2019
Amine dehydrogenases (AmDHs) catalyse the conversion of ketones into amines. Here, the authors created AmDH variants, the best of which showing a substrate-dependent stereo-switchable selectivity, affording either S- or R-configured amine products with ...
Vasilis Tseliou, Tanja Knaus, Marcelo F. Masman, Maria L. Corrado, Francesco G. Mutti   +4 more
doaj   +1 more source

The roles of side chains in Y6‐series non‐fullerene acceptors for high‐performance organic solar cells

Bulletin of the Korean Chemical Society, EarlyView.
The development of organic solar cells (OSCs) has been driven by structural modifications of Y6‐series non‐fullerene acceptors. In particular, side‐chain engineering regulates solubility, molecular packing, and energy levels, enabling efficiencies to increase from 15.7% to over 20%.
Peddaboodi Gopikrishna, Bomi Kim, Jongnam Park, BongSoo Kim   +3 more
wiley   +1 more source

Shedding Light on Synthetic Autocatalysis: From Conventional Closed‐Shell Chemistries to Overlooked Open‐Shell Occurrences

Chemistry – A European Journal, EarlyView.
Why add another catalyst when the product itself holds the power to catalyze its own formation? Autocatalysis in synthetic chemistry enhances reaction efficiency and uncovers novel catalytic behavior across both closed‐shell and open‐shell systems, expanding reactivity and enabling innovative design strategies.
Jaspreet Kaur, Joshua P. Barham
wiley   +1 more source

Biotransformations of Substituted Phenylethanols and Acetophenones by Environmental Bacteria

Food Technology and Biotechnology, 2008
Whole cells of hydrocarbon-degrading bacteria, isolated from polluted sediments in the Santos Estuary (Baixada Santista, São Paulo, Brazil), were able to catalyse oxidoreduction reactions with various substituted phenylethanols and acetophenones as ...
Edna Kagohara, Vivian Helena Pellizari, João Valdir Comasseto, Leandro Helgueira Andrade, André Luiz Meleiro Porto   +4 more
doaj  

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

Chemistry – A European Journal, EarlyView.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis, Kyriakos D. Nikopoulos, Ioannis N. Lykakis   +2 more
wiley   +1 more source

The Asymmetric Self‐Replicative Alkylation of N‐Arylaldimines Using Organolithium Reagents

Chemistry – A European Journal, EarlyView.
Here, we report a new asymmetric autoinductive reaction; the addition of nBuLi to N‐arylaldimines to form chiral lithium amides. The reaction proceeds with full conversion and complete transfer of chirality, representing the first example of an asymmetric autoinductive reaction with organolithium reagents.
Anka Hagelschuer, Paco Visser, Ben L. Feringa   +2 more
wiley   +1 more source

Effect of enantiomeric excess on the phase behavior of antiferroelectric liquid crystals

Physical Review E, 2011
Null transmission ellipsometry and resonant x-ray diffraction are employed to study the effect of enantiomeric excess (EE) on the phase behavior of antiferroelectric liquid crystal 10OTBBB1M7. Phase sequence, layer spacing, and pitch of the helical structures of the smectic-C(α)* and smectic-C* phases are studied as a function of temperature and EE ...
LiDong, Pan, B K, McCoy, Shun, Wang, Z Q, Liu, S T, Wang, R, Pindak, C C, Huang   +6 more
openaire   +3 more sources