Article
Chemistry, Inorganic & Nuclear
Jannis Barrera, Haleh H. Haeri, Julian Heinrich, Matthias Stein, Dariush Hinderberger, Nora Kulak
Summary: Cu(ii) complexes with ATCUN peptide ligands were investigated for their ROS generation and oxidative DNA degradation abilities. However, the biological activity of most ATCUN complexes such as Cu-GGH (Gly-Gly-His) is low. Tuning the redox chemistry by incorporating N-heteroaromatics reinstates ROS production, leading to efficient DNA cleavage.
DALTON TRANSACTIONS
(2023)
Review
Chemistry, Organic
Ramachandran Gunasekar, Ross L. Goodyear, Ilaria Proietti Silvestri, Jianliang Xiao
Summary: The enantioselective and diastereoselective hydrogenation of N-heteroaromatic compounds is an efficient strategy for the synthesis of chirally enriched cyclic heterocycles. Recent advances have allowed for good to excellent enantioselectivity in the hydrogenation of various N-heteroaromatic compounds. This review provides an analysis of the recent developments in this field and highlights the importance of these molecules in drug discovery.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2022)
Review
Chemistry, Inorganic & Nuclear
Moushakhi Ghosh, Shabana Khan
Summary: This article highlights the recent developments in silylene-coinage metal chemistry, focusing on synthetic approaches, unusual properties, and catalytic efficiency of these complexes. Further research is needed to explore the potential of silylene-coinage metal complexes in various chemical reactions.
DALTON TRANSACTIONS
(2021)
Review
Chemistry, Applied
Silvia Valverde, Ana M. Ares, J. Stephen Elmore, Jose Bernal
Summary: This article provides an overview of the analytical methodologies used in recent years (2015-2021) to determine various constituents in honey, especially those with health-promoting effects and nutritional value. The main compounds analyzed in honey include phenolic compounds, sugars, and amino acids. The preferred analytical technique for determining honey constituents is high-performance liquid chromatography, while dilution with water or a buffer is the preferred option for sample treatment.
Review
Materials Science, Multidisciplinary
Bing Li, Zhizheng Li, Le Zhou, Huacheng Zhang, Jie Han
Summary: By fully considering its hydrophobic/electron-rich cavity, planar chirality, as well as rigid chemical structures, pillar[n]arene has the capacity to contribute to molecular recognition, self-assembly, and the formation of advanced hierarchical materials in photocatalysis. This review discusses and summarizes the recent progress in pillar[n]arene-based photocatalysis, highlighting its diverse roles as a phase transfer catalyst, a homogeneous catalyst, and a building block/reactive site in enhancing the water-solubility of substrates, catalyzing selective reactions, and fabricating hierarchical (hybrid) heterogeneous catalysts.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Kazuma Kikuchi, Hiroaki Imoto, Kensuke Naka
Summary: Various 1D-coordination polymers with dinuclear rhombic {Cu2X2} cores (X = Br, I) were synthesized using triphenylarsine (AsPh3) and six types of bidentate N-heteroaromatic co-ligands via spontaneous evaporation. These coordination polymers exhibited strong emission at 298 K (quantum yield: up to 0.60), with emission color dependent on the N-heteroaromatic co-ligand. Their emission efficiencies were higher than the discrete complexes reported previously and showed higher resistance to mechanical stimuli.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Organic
Chaohuang Chen, Gerald Kehr, Gerhard Erker
Summary: Negatively charged borataalkenes and neutral boraalkenes are isolable organoelement compounds containing BC double bonds. The use of strongly electron withdrawing fluoroaryl substituents at boron greatly facilitates their preparation. The presence of fluoroaryl groups on boranes enhances the acidity of a-CH, promoting the formation of borataalkenes through deprotonation. Synthetic routes involving B-H borenium cations with fluoroaryl groups have been developed to produce reactive boraalkenes. Both borataalkenes and boraalkenes can serve as p-ligands in organometallic and coordination chemistry.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Zuzanna Wrzeszcz, Renata Siedlecka
Summary: This study presents a multi-step synthesis of a series of chiral oxazoline substituted pyridine N-oxides compounds, and tests their catalytic properties in allylation and nitroaldol reactions. Various synthetic pathways were designed and potential stability issues were discussed.
Article
Chemistry, Multidisciplinary
Kseniia Titenkova, Alexander D. Shuvaev, Fedor E. Teslenko, Egor S. Zhilin, Leonid L. Fershtat
Summary: Electrochemical synthesis is being used to create new strategies for the assembly of complex organic molecules. However, forming N-N bonds electrochemically is still challenging due to the electronegativity of nitrogen and side reactions. In this study, a green electrochemical approach was presented to selectively form N-N bonds using oximinohydrazones. The resulting 1,2,3-triazole 1-oxides possess thermally stability and show promise for the development of functional organic materials and pharmaceutical ingredients.
Review
Chemistry, Inorganic & Nuclear
Lothar Weber, Falk Ebeler, Rajendra S. Ghadwal
Summary: Dipnictenes, molecules with a double bond between two Group 15 elements, have made remarkable progress in recent years. The introduction of new ligand systems and non-carbon donor substituents has led to the discovery of numerous dipnictenes with diverse properties. Stable N-heterocyclic carbenes and other singlet carbenes have also been utilized in the synthesis of related unsaturated species. A comprehensive understanding of the structure, bonding, and reactivity of dipnictenes and the influence of substituents on their properties is crucial for advancements in the field.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Zhuan Duan, Claire M. M. Young, Jiayun Zhu, Alexandra M. Z. Slawin, AnnMarie C. C. O'Donoghue, Andrew D. D. Smith
Summary: This study investigates the effect of NHC and heteroaromatic aldehyde structure on the reaction rate and equilibrium constants. The results show that structural variations significantly affect the kinetic parameters of adduct formation, decay to starting materials, and onward reaction to BI. The study also describes the isolation and characterization of tetrahedral adducts formed during the addition of N-aryl triazolium derived NHCs into heteroaromatic aldehydes.
Article
Chemistry, Inorganic & Nuclear
Cary R. Stennett, Philip P. Power
Summary: The reactions involving different metal complexes led to the formation of a variety of metal amide compounds with diverse structures and properties, including polymers of titanium and cobalt, as well as dimers of manganese and iron. The role of elemental bromine in these reactions was studied, revealing its impact on ligand activation and the formation process of metal complexes.
INORGANIC CHEMISTRY
(2021)
Review
Chemistry, Analytical
Myriam Diaz-Alvarez, Esther Turiel, Antonio Martin-Esteban
Summary: Molecular imprinting technology is a established technique for tailor-made polymers with predetermined selectivity, which are considered excellent materials for sample preparation. However, there are some shortcomings in the use of molecularly imprinted polymers in sample preparation, such as binding sites heterogeneity and slow diffusion mass transfer. This review provides an overview of recent advances and trends in molecularly imprinted polymers-based extraction, with a focus on strategies to improve mass transfer and selective recognition in aqueous media, as well as a green perspective on the preparation of molecularly imprinted polymers.
JOURNAL OF SEPARATION SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Alexey Y. Timoshkin
Summary: This article highlights new developments in the field of Lewis acidity, focusing on novel Lewis acids and Lewis superacids of group 2, 13, 14, and 15 elements. It emphasizes the general nature of Lewis acidity phenomena and their vital role in different areas of chemistry. The basic principles of Donor-Acceptor (DA) interactions are presented to underscore the importance of Lewis acidity from weak intermolecular interactions to strong DA complexes. Recent advances in the synthesis and characterization of novel Lewis acids and Lewis superacids of group 2, 13, 14, and 15 elements are discussed.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Multidisciplinary Sciences
Brian N. Long, Maria J. Beltran-Leiva, Cristian Celis-Barros, Joseph M. Sperling, Todd N. Poe, Ryan E. Baumbach, Cory J. Windorff, Thomas E. Albrecht-Schonzart
Summary: Variations in bonding and coordination environment in trivalent lanthanides and actinides can significantly affect their electronic structure and properties. A study reported a dinuclear organometallic americium complex with unexpectedly ionic Am-N bonding and enhanced covalency in the Am-C bonds compared to its neodymium analogue.
NATURE COMMUNICATIONS
(2022)