Results 191 to 200 of about 1,382,192 (301)

Spin‐Polarized Interfaces Redirect CO2 Reduction From CO to Formate

Angewandte Chemie, EarlyView.
The chiral electrocatalyst exploits the CISS effect to establish a spin‐polarized interface that selectively promotes formate production during CO2 reduction while effectively suppressing the competing hydrogen evolution. ABSTRACT Achieving high product selectivity in electrocatalytic carbon dioxide reduction (CO2RR) remains a critical challenge due to
Fan He, Xingxu Yan, Xiaoqing Pan, Yong Yan, Jing Gu   +4 more
wiley   +1 more source

Oxygen isotope composition of Mesoproterozoic (~1360 Ma) seawater constrained by clumped isotopes of North China limestones. [PDF]

Sci Adv
Li P, Hao F, He S, Chai H, Jiao Y, Gao Y, Zou H.   +6 more
europepmc   +1 more source

Using plant physiological stable oxygen isotope models to counter food fraud. [PDF]

Sci Rep, 2021
Cueni F, Nelson DB, Boner M, Kahmen A.
europepmc   +1 more source

Janus Reactivity of a Mononuclear Non‐Heme Iron(III)‐Peroxo Complex Toward Indole Oxidation

Angewandte Chemie, EarlyView.
The iron(III)‐peroxo complex [FeIII(O2)(12‐TMC)]+ exhibits bifurcating pathways in indole oxidation. N─H indoles undergo N─H H‐atom abstraction, supported by a KIE of 5.2 for N─H/N–D 2,3‐dimethylindoles, whereas N‐methylindoles react via electrophilic addition of the iron‐peroxo group to the C2–C3 double bond of the indole ring, forming iron ...
Wenjuan Zhu, Peng Wu, Binju Wang, Kallol Ray, Wonwoo Nam   +4 more
wiley   +1 more source

Strontium and oxygen isotope analysis reveals changing connections to place and group membership in the world's earliest village societies. [PDF]

Sci Rep
Plug JH, Blevins KE, Abbès F, Akkermans PMMG, Bach Gómez AM, Chambrade ML, Chamel B, Coqueugniot E, Molist M, Orange M, van der Plicht J, Galata S, Nowell G, Montgomery J, Pearson J, Fernández-Domínguez E.   +15 more
europepmc   +1 more source

Dissolved oxygen isotope modelling refines metabolic state estimates of stream ecosystems with different land use background. [PDF]

Sci Rep, 2022
Piatka DR, Venkiteswaran JJ, Uniyal B, Kaule R, Gilfedder B, Barth JAC.   +5 more
europepmc   +1 more source

Water‐Derived Radical Species Initiate Six‐Electron Oxidation of Cyclic Ketones in Microdroplets

Angewandte Chemie, EarlyView.
Spontaneous six‐electron oxidation of cyclic ketones to yield dicarboxylic acids/keto acids is achieved in ethanol microdroplets containing about 2% water under ambient conditions without any metal salts, acids, or oxidants. Mechanistic studies show that trace amounts of water and molecular oxygen serve as active oxidants in this transformation ...
Muhammad Mujahid Ali, Manish Jana, William LeFever, Robert Graham Cooks   +3 more
wiley   +1 more source

Correction for Sharp et al., Extreme triple oxygen isotope fractionation in <i>Equisetum</i>. [PDF]

Proc Natl Acad Sci U S A
europepmc   +1 more source

Room-Temperature Framework Oxygen Isotope Exchange during Interaction of Water with Hydrophilic Pure-Silica Zeolites Studied Using Nuclear Magnetic resonance Spectroscopy and Neutron Diffraction. [PDF]

J Am Chem Soc
Kelly NL, Stanzione MG, Brako-Amoafo D, Lawrence GB, Rice CM, Wheatley PS, Keys JM, Heard CJ, Fischer HE, Gibbs AS, Ashbrook SE, Morris RE.   +11 more
europepmc   +1 more source

Highly Enantio‐ and Diastereoselective Synthesis of Tetrahydrofuran Frameworks via Chiral Lewis Acid‐Catalyzed Formal [3+2] Cycloaddition of Allylsilanes

Angewandte Chemie, Volume 138, Issue 39, 21 September 2026.
The first catalytic asymmetric formal [3+2] cycloaddition of allylsilanes delivers cis‐2,5‐disubstituted tetrahydrofuran‐3‐ones that serve as versatile intermediates for the synthesis of diverse bioactive scaffolds. ABSTRACT A formal [3+2] cycloaddition via cyclization/1,2‐hydride shift initiated by nucleophilic attack of allylsilanes has been ...
Hosung Lee, Dong Kyu Kim, Pingshan Xin, Jin Won Lee, Terim Seo, Do Hyun Ryu   +5 more
wiley   +1 more source