Results 151 to 160 of about 63,826 (275)

Transition Metal‐Catalyzed Functionalization of Nonallylic Alkenyl Alcohols via Chain‐Walking Strategies

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 9, 5 May 2026.
This minireview outlines recent advances in chain‐walking reactions of nonallylic alkenyl alcohols catalyzed by various transition metals, including palladium, ruthenium, rhodium, iridium, and nickel. Furthermore, the corresponding reaction mechanisms are discussed.
Yong Huang   +5 more
wiley   +1 more source

Novel Homogeneous and Heterogeneous Catalysts for the Synthesis of Formic-Acid Derivatives from CO2

open access: yesCHIMIA, 1997
Recently developed homogeneous and heterogeneous catalysts for the synthesis of N,N-dimethylformamide (DMF) and methyl formate (MF) from carbon dioxide are compared with respect to their catalytic performance.
Oliver Kröcher   +2 more
doaj   +2 more sources

Evaluation of in vitro toxicity of common phytochemicals included in weight loss supplements using 1H NMR spectroscopy

open access: yesFEBS Open Bio, Volume 16, Issue 5, Page 906-920, May 2026.
We investigated the toxicity of 12 active compounds commonly found in herbal weight loss supplements (WLS) using human liver and colon cell models. Epigallocatechin‐3‐gallate was the only compound showing significant toxicity. Metabolic profiling revealed protein degradation, disrupted energy and lipid metabolism suggesting that the inclusion of EGCG ...
Emily C. Davies   +3 more
wiley   +1 more source

Engineering a Synthetic Formatotrophic Yeast With Enhanced Growth Capacity on Formate

open access: yesAdvanced Energy and Sustainability Research, Volume 7, Issue 5, May 2026.
Engineering Yeast for Growth on Formate and Methanol via Serine‐Centered C1 Coupling. By engineering serine metabolism and remodeling the rGly pathway, we rendered yeast growth strictly dependent on formate. This synthetic formatotrophy enables growth on dual‐C1 substrates by channeling formate into the central metabolism via serine deaminases and ...
Shuyuan Guo   +11 more
wiley   +1 more source

Mechanistic Kinetic Modeling of the Selective Methanol Oxidation Based on Christiansen Mathematics

open access: yesChemie Ingenieur Technik, Volume 98, Issue 5, Page 181-190, May 2026.
The article provides a mechanistic description of reaction rates for the selective methanol oxidation to green oxygenates. For this, a detailed reaction mechanism is provided based on catalytic cycles. The catalytic cycles are translated into mechanistic rate expressions using Christiansen mathematics.
Thomas Friederici   +3 more
wiley   +1 more source

CO2 Hydrogenation to Light Olefins and Single Hydrocarbons: Active Sites and Synergy in Oxide–Zeolite Catalysts

open access: yesCarbon Neutralization, Volume 5, Issue 3, May 2026.
This work systematically reviews oxide–zeolite catalysts, summarizing the types of oxide active sites, regulation strategies for zeolites in selective hydrocarbon synthesis, and highlighting the crucial role of oxide–zeolite interactions. ABSTRACT Catalytic CO2 hydrogenation to light olefins and single hydrocarbons represents a crucial pathway for ...
Xiaohong Guo   +5 more
wiley   +1 more source

Photochemistry of (‐)‐Levoglucosenone: Norrish Type I Reaction and Photoinduced Electron Transfer Processes

open access: yesChemPhotoChem, Volume 10, Issue 5, May 2026.
Photochemically excited levoglucosenone (LGO) efficiently undergoes Norrish type I reactions yielding particularly functionalized alkenes. In the presence of tertiary amines, this reaction is quenched by an intermolecular electron transfer. This process leads to addition products with high stereoselectivity.
Mario Andrés Gomez Fernandez   +6 more
wiley   +1 more source

Development of high energy density primary batteries First quarterly report, 22 Jun. - 21 Oct. 1965 [PDF]

open access: yes
Electrode and electrolyte studies for lithium- copper fluoride ...
Abens, S. G., Mahy, T. X., Merz, W. C.
core   +1 more source

Bioactivation and Metabolism of Amino Acid MDMA Prodrugs in Zebrafish Embryos, Human Liver S9, Whole Blood, and Microdosed Human Urine

open access: yesDrug Testing and Analysis, Volume 18, Issue 5, Page 669-677, May 2026.
Bioactivation and metabolism of MDMA prodrugs: MDMA‐Trp, MDMA‐Lys, MDMA‐Gly showed unique urine screening targets only for MDMA‐Trp, while biomarkers for MDMA‐Lys and MDMA‐Gly consisted of MDMA and known MDMA metabolites. Conversion of amino acid prodrugs to MDMA in pHLS9, zebrafish embryos, and humans. ABSTRACT 3,4‐Methylenedioxymethamphetamine (MDMA)
Simon K. Wellenberg   +6 more
wiley   +1 more source

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