Article
Chemistry, Multidisciplinary
Gandrath Dayaker, William Erb, Madani Hedidi, Floris Chevallier, Marielle Blot, Philippe C. Gros, Goran Hilmersson, Thierry Roisnel, Vincent Dorcet, Ghenia Bentabed-Ababsa, Florence Mongin
Summary: The enantioselective deprotometalation of alkyl ferrocenecarboxylates using mixed lithium-zinc or lithium-cadmium bases was investigated in this study. Different chiral lithium alkyl-amidozincates showed varied performance in producing enantiomerically enriched derivatives. The reaction with cadmium instead of zinc did not take place, suggesting the different reactivity of the two metal species.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Organic
Stephen H. Dempsey, Alex Lovstedt, Steven R. Kass
Summary: A range of electrostatically enhanced 3- and 4-pyridylboratesalt catalysts are reported, which show significant improvement compared to an activated noncharged neutral control compound. Their nucleophilicity and catalytic performance are evaluated in different reactions, along with three methods for rapidly evaluating their basicity. The charge differences between the anion and its protonated zwitterionic conjugate acid are also assessed, as well as the highest occupied molecular orbitals of the anions.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Guohuang Kang, Geng Zhong, Jiabin Ma, Rui Yin, Kangning Cai, Tianqi Jia, Xiaolong Ren, Kuang Yu, Peiwu Qin, Zhen Chen, Feiyu Kang, Yidan Cao
Summary: In this study, an EC-free carbonate-based electrolyte was developed to enable the high-voltage and low-temperature application of Ni-rich cathodes. The EC-free system has low viscosity, weakly solvated structure, and high interfacial stability with both the cathode and the anode.
Article
Chemistry, Multidisciplinary
Anthony N. Cauley, Melda Sezen-Edmonds, Eric M. Simmons, Cullen L. Cavallaro
Summary: Visible light photocatalysis enables access to complex molecules. High-throughput experimentation was used to systematically investigate nickel-mediated photocatalytic cross-coupling, resulting in the selection of catalysts, bases, and solvents for the production of chemical libraries. These optimized conditions showed general applicability, robustness, and broad functional group tolerance.
REACTION CHEMISTRY & ENGINEERING
(2021)
Review
Chemistry, Inorganic & Nuclear
Helgard G. Raubenheimer, Selwyn F. Mapolie
Summary: This article highlights recent developments in the thermodynamic approach for analyzing trends in acid and base strength variation. It discusses the use of thermodynamic cycles to interpret acid and base strength ranking, focusing on two series each of bases and acids. Unique functions for electronegativity and charge density indicators are used to evaluate these cycles, with solvent effects being considered by including dehydration and hydration changes in extended free energy cycles.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Ane Garcia-Urricelqui, Abel de Cozar, Antonia Mielgo, Claudio Palomo
Summary: This study demonstrates that the chemistry of alpha-amino aldehydes can be expanded by conducting direct alpha-alkylation reactions with nitroolefins, leading to the generation of densely functionalized products with high diastereo- and enantioselectivity, containing up to two, quaternary and tertiary, vicinal stereocenters. The proposed mechanism suggests that intramolecular hydrogen bonding between the NH group and the carbonyl oxygen atom in the starting alpha-amino aldehyde is crucial for reaction stereocontrol.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Justyna Polaczek, Grazyna Stochel, Rudi van Eldik
Summary: The study focuses on the impact of air pollution particulate matter on physiological processes, particularly examining how different nanoparticles affect the rate of nitrosylcobalamin formation without altering the nature of the final product.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Engineering, Environmental
Xuejing Xiao, Ruixue Guo, Yumeng Qi, Junyan Wei, Nannan Wu, Shengnan Zhang, Ruijuan Qu
Summary: TiO2 nanospheres prepared by the sol-gel method were found to efficiently catalyze the photo-degradation of 1-butyl-2,3-dimethylimidazolium bromide salt ([BMMIm]Br) under simulated solar irradiation through the main attack of hydroxyl radicals ( OH). The introduction of alkali and alkaline earth metal ions enhanced the formation of OH, leading to increased degradation efficiency. The removal efficiency of [BMMIm](+) remained high in real waters. Different reactions, such as hydroxyl substitution, bond breaking, direct oxidation, and ring opening, were observed during the photocatalytic degradation process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
