Results 211 to 220 of about 107,082 (295)

Isotopic Fractionation and Kinetic Isotope Effects of a Purified Bacterial Nitric Oxide Reductase (NOR). [PDF]

Biochemistry
Rivett ED, Finders CM, Haslun JA, Gandhi H, Kahle M, Ädelroth P, Ostrom PH, Ostrom NE, Hegg EL.   +8 more
europepmc   +1 more source

A Michaelis‐Arbuzov‐Type Pathway to a Protected 2ʹ‐Deoxy‐2ʹ‐Selenomethyl‐Adenosine‐3ʹ,5ʹ‐Phosphoroselenolate Guanosine Dinucleotide for Use in Modified m7G Cap Synthesis

Chemistry – A European Journal, EarlyView.
Here we report a synthesis of the dinucleotide 4 for a projected future total synthesis of the m7G cap 1. Highlights of the route include: 1) a 3ʹ‐H‐phosphonate/5ʹ‐selenocyanate Michaelis‐Arbuzov coupling to forge the 3ʹ,5ʹ‐phosphoroselenolate; 2) an Amosova reductive selenomethylation to install the 2ʹ‐SeMe; 3) a solid CPR II 5ʹ‐O‐phosphitylation; and
K. Lawrence E. Hale, Helen O. McCarthy, Mark G. McLaughlin   +2 more
wiley   +1 more source

Kinetics and Mechanism of Enantioselective Cu-Catalyzed Alcohol Silylation. [PDF]

J Am Chem Soc
Helou de Oliveira PH, Seliger J, Rao S, Lloyd-Jones GC, Wang G, Oestreich M.   +5 more
europepmc   +1 more source

Ion–Molecule Reaction Products as Probes and Precursors for Preparative Mass Spectrometry

Chemistry – A European Journal, EarlyView.
Ion–molecule reactions in the gas phase of mass spectrometers are important for preparative mass spectrometry because they (1) provide knowledge about the intrinsic reactivity of ions, helping to predict and control their reactivity at interfaces, and (2) generate new complex ions that can be mass selected and deposited on surfaces.
Markus Rohdenburg, Sebastian Kawa, Kay‐Antonio Behrend, Harald Knorke, Jonas Warneke   +4 more
wiley   +1 more source

How electronic and steric effects in acceptor alcohols shape S_N1- and S_N2-type glycosylation reactions. [PDF]

Chem Sci
Hoogers D, van de Vrande KNA, van der Meij D, Remmerswaal WA, Tugny C, van der Marel GA, Codée JDC.   +6 more
europepmc   +1 more source

Photocatalytic Degradation of PFOA with Porous Lanthanoid Perovskites Nano Catalyst

Chemie Ingenieur Technik, EarlyView.
Photocatalytic degradation of PFOA was studied using nickel‐ and lanthanide‐doped perovskites under UV–VIS irradiation. Catalyst characterization confirmed successful doping, with Ni/NdMnO3 showing the highest photocatalytic efficiency. Degradation occurred via C–C bond cleavage, forming transformation products PFHpA and PFHxA.
Julia Schowarte, Ramona Riedel, Muddasar Safdar, Sven Helle, Thomas Fischer, Harvey Arellano‐García   +5 more
wiley   +1 more source

Dual-Isotope (δ²H, δ¹⁸O) and Bioelement (δ¹³C, δ¹⁵N) Fingerprints Reveal Atmospheric and Edaphic Drought Controls in Sauvignon Blanc (Orlești, Romania). [PDF]

Plants (Basel)
Miricioiu MG, Botoran OR, Costinel D, Făurescu I, Ionete RE.   +4 more
europepmc   +1 more source

Linear and Two‐Dimensional Infrared Spectroscopy of the Multifunctional Vibrational Probe, 3‐(4‐Azidophenyl) Propiolonitrile. Deperturbing a Fermi Triad by Isotopic Substitution

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Linear infrared spectroscopy combined with isotope labeling and density functional theory unravels the origin of a Fermi triad in a multifunctional vibrational chromophore. Ultrafast 2DIR‐spectroscopy reports directly on the dynamics and the intramolecular vibrational energy flow pathways in the isotopically deperturbed system. Abstract Infrared probes
Claudia Gräve, Jörg Lindner, Stefan Flesch, Luis I. Domenianni, Peter Vöhringer   +4 more
wiley   +1 more source

Single GAF Domain Phytochrome Exhibits a pH‐Dependent Shunt on the Millisecond Timescale

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
During their light‐induced photocycle, phytochromes can engage in a thermal reversion back to the initially excited state, denoted as a shunt. This study investigates a pH‐dependent shunt transition in the Pfr state of the All2699g1 phytochrome from Nostoc punctiforme using UV/Vis laser flash photolysis and kinetic modeling. The findings suggest a keto‐
Florian Trunk, Lisa Köhler, Tobias Fischer, Wolfgang Gärtner, Chen Song, Chavdar Slavov, Josef Wachtveitl   +6 more
wiley   +1 more source

Mechanistic and Kinetic Insights into the Acylation Reaction of Hepatitis C Virus NS3/NS4A Serine Protease with NS4B/5A Substrate. [PDF]

Biomolecules
Martínez-González JÁ, Salazar-Sanchez N, Larriva-Hormigos M, Martínez R, González M.   +4 more
europepmc   +1 more source