Article
Chemistry, Multidisciplinary
Chunsong Xie, Song Wu, Runmei Zhang
Summary: Here, a mild and transition-metal-free SN2' reaction of Morita-Baylis-Hillman adducts with isocyanoacetates is reported. This reaction proceeds in a stereo- and regiospecific manner, tolerating various functionalities and providing transformable alpha-allylated isocyanoacetates with high efficiency. Preliminary studies on the asymmetric version of this reaction demonstrate ZnEt2/chiral amino alcohol combinations as an effective asymmetric catalytic system, yielding enantioenriched alpha-allylated isocyanoacetate with a chiral quaternary carbon in high yield.
Article
Chemistry, Applied
Wail Al Zoubi, Bassem Assfour, Abdul Wahab Allaf, Stefano Leoni, Jee-Hyun Kang, Young Gun Ko
Summary: A novel one-pot interfacial plasma-discharge-driven (IP-D) synthesis strategy is developed to fabricate stable high-entropy-alloy (HEA) nanoparticles with ultrasmall size on a porous support surface. Multiple metallic elements are successfully incorporated into the HEA nanoparticles using an electric field, and the nanoparticles are attached to a porous magnesium oxide surface via rapid cooling. The CuAgNiFe catalyst shows excellent catalytic performance and consistent activity, outperforming conventional photocatalysts.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Review
Polymer Science
Bryan T. Tuten, Christopher Barner-Kowollik
Summary: This concise overview provides insights into the use of heavier main group elements in multicomponent reactions and polymer chemistry, focusing on the properties of Group 13, Group 14, Group 15, and Group 16 elements. It briefly explores elements that participate in the reaction mechanism and remain in the macromolecular structure. State-of-the-art work in developing these reactions is highlighted, aiming to inspire other polymer chemists to explore different parts of the periodic table.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Review
Polymer Science
In-Hwan Lee, Ki-Taek Bang, Hee-Seong Yang, Tae-Lim Choi
Summary: Diversification of polymer structures is crucial for unique applications, and diversity-oriented polymerization (DOP) using multicomponent polymerization (MCP) has emerged as an efficient strategy. Cu-catalyzed MCP (Cu-MCP) has overcome previous challenges in MCP, paving the way for diverse and complex polymer structures. Future research will focus on the advancement and optimization of Cu-MCP for innovative polymer applications.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Philip J. Chevis, Chi Bong Eric Chao, Christopher Richardson, Christopher Hyland, Richmond Lee, Stephen G. Pyne
Summary: The crotylation reactions of chiral α-F, α-OBz and α-OH aldehydes were carried out under Petasis-borono-Mannich conditions using (E)- or (Z)-crotylboronates and primary amines. The reactions resulted in γ-addition products with high diastereoselectivity and enantioselectivity. The stereochemical outcomes of the reactions could be explained using transition state models and were supported by DFT calculations. Representative products were transformed into highly functionalized 1,2,3,6-tetrahydropyridines and 3H-oxazolo[3,4-a]pyridine-3-ones, which are valuable scaffolds in synthesis.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Chemistry, Medicinal
Pedro Brandao, Carolina Marques, Anthony J. Burke, Marta Pineiro
Summary: Oxindole derivatives are known for their vast biological activities in Medicinal Chemistry. Recent studies on the preparation of oxindole derivatives using isatin-based multicomponent reactions have advanced the generation of druglike libraries with wide scaffold diversity.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2021)
Article
Polymer Science
Burcu Alkan, Ozgun Daglar, Serter Luleburgaz, Begum Gungor, Ufuk Saim Gunay, Gurkan Hizal, Umit Tunca, Hakan Durmaz
Summary: A novel one-pot cascade reaction was proposed for the synthesis and simultaneous modification of polyesters, utilizing the Passerini three-component reaction. The study emphasized the significance of temperature in achieving high molecular weight polymers and efficient reactions.
Review
Chemistry, Multidisciplinary
Manfred T. Reetz, Marc Garcia-Borras
Summary: Decades of research by biochemists, organic chemists, and protein engineers have uncovered the potential existence of fleeting chiral intermediates in enzyme-catalyzed reactions, a phenomenon that has been overlooked. By systematically analyzing key questions and categorizing these intermediates, researchers hope to attract attention and explore a new research field in enzymology.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Bruno Hessel Silva, Claudia Zlotea, Gavin Vaughan, Yannick Champion, Walter Jose Botta, Guilherme Zepon
Summary: Ti-V-Nb-Cr alloys were studied for their hydrogen storage properties using laboratory and synchrotron X-ray diffraction, Pair Distribution Function (PDF) analyses, Transmission Electron Microscopy (TEM), and thermo-desorption analyses (TDS). The results revealed a multi-step hydrogenation process in the alloy, which can be described by models with random atomic distribution. This research is of great significance for developing efficient hydrogen storage materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Computer Science, Cybernetics
Erik Stolterman, Jordan Beck
Summary: This paper investigates the contribution of a configurational theory to the discourse of HCI and proposes a configurational theory suitable for HCI research. It emphasizes the core object of study in HCI and discusses the potential benefits of a configurational theory for researchers.
INTERNATIONAL JOURNAL OF HUMAN-COMPUTER INTERACTION
(2022)
Article
Chemistry, Physical
Ruihua Pu, Ziyu Wang, Ruixue Zhu, Jiaming Jiang, Tsu-Chien Weng, Yifan Huang, Weimin Liu
Summary: Phototherapy is an effective and safe method for reducing high levels of ZZ-BR in the serum of newborns. This study used various spectroscopic techniques and quantum chemical calculations to investigate the primary configurational isomerization dynamics of ZZ-BR in organic solvents. The results showed that upon photoexcitation, ultrafast configurational isomerization occurred, followed by intramolecular hydrogen-bond distortion and large-scale rotation of the two dipyrrinone halves of the ZZ-BR isomer in a few picoseconds. Most of the population returned back to ZZ-BR, while a small amount converted into stable BR isomers via structural isomerization.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Ruihua Pu, Ziyu Wang, Ruixue Zhu, Jiaming Jiang, Tsu-Chien Weng, Yifan Huang, Weimin Liu
Summary: Phototherapy is an effective and safe method for reducing high levels of ZZ-BR in newborns' serum. The process involves photoinduced configurational and structural isomerization, which generates excretable isomers. However, the exact mechanism of ZZ-BR photoinduced isomerization is still not well understood.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Andrzej Grzechnik, Wilson A. Crichton, Dmitrii Druzhbin, Michal Fecik, Ralf P. Stoffel, Sophia Brauksiepe, Simon Steinberg, Richard Dronskowski, B. Viliam Hakala, Karen Friese
Summary: This study investigated the chemical reactions and phase stabilities in the Si-Te system at high pressures using experimental and theoretical methods. The results revealed the formation of cubic and rhombohedrally distorted clathrates with a wide range of compositions, as well as the occurrence of a hexagonal phase. Additionally, it was found that Si2Te3 decomposes into multiple phases under high-pressure and high-temperature conditions. Only the clathrate structure remains stable at atmospheric conditions regardless of the starting compositions.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xuefeng Yang, Xue Jin, Lili Zhou, Pengfei Duan, Yaxun Fan, Yilin Wang
Summary: By constructing chiral spherical micelles, hydrophilic and hydrophobic emitters can be endowed with CPL activity in the aqueous phase, while the cavities of the micelles can effectively modulate the excited state chirality of dynamic chemical reactions, enabling color-adjustable CPL emission.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Business
Li-Fei Chen, Donna Larissa Khuangga
Summary: Corporate social responsibility (CSR) is crucial for organizations aiming to achieve sustainable development and competitive advantage by influencing employee attitudes. Internal and external CSR initiatives promote self-focused and other-focused justice, respectively, shaping positive employee behaviors. High CSR perceptions lead to high perceived justice among employees who attach high importance to justice, and the combination of high perception of internal CSR, external CSR, and organizational justice predicts positive employee outcomes.
CORPORATE SOCIAL RESPONSIBILITY AND ENVIRONMENTAL MANAGEMENT
(2021)
