Results 171 to 180 of about 218,279 (284)

Nitrogen‐Doped Mesoporous Carbon Loaded With Zn Single Atoms as a Catalyst for the Synthesis of 2,4(5)‐Diarylimidazoles

open access: yesChemistryOpen, Volume 15, Issue 11, November 2026.
A zinc single‐atom catalyst anchored on nitrogen‐doped mesoporous carbon (Zn@NMC) was synthesized via an evaporation‐induced self‐assembly method and applied in the one‐pot synthesis of 2,4(5)‐diarylimidazoles. The catalyst was fully characterized using FT‐IR, XRD, SEM, EDX, BET, and TGA analyses.
Maryam Shojaei‐Asl, Mohsen Moradian
wiley   +1 more source

1,4‐Brook Rearrangement of β‐Silyl Allylic Alcohols: Trisubstituted Alkenes by Copper‐Mediated Stereoretentive ipso‐Substitution Reactions

open access: yesAngewandte Chemie, Volume 138, Issue 44, 26 October 2026.
To fully leverage the power of the ruthenium‐catalyzed trans‐hydrosilylation of propargyl alcohols, it was necessary to develop a practical and robust method for the activation of those products that carry the silyl group distal to the hydroxy substituent.
Paul Haf‐Moths   +2 more
wiley   +2 more sources

A Tale of Two Heterocycles: How Oxygen and Sulfur Shape Divergent Kemp Reactivity

open access: yesJournal of Physical Organic Chemistry, Volume 39, Issue 11, November 2026.
Like benzisoxazoles, benzisothiazoles also undergo Kemp elimination, with rates accelerated by aprotic polar solvents and electron‐withdrawing groups. Oxygen‐containing heterocycles exhibit more localized negative charges than sulfur analogs, resulting in a more pronounced catalytic response to these environmental factors. ABSTRACT The Kemp elimination
Ella R. Jennings   +5 more
wiley   +1 more source

Novel aprotic polar solvents for facile Baylis-Hillman reaction

open access: yesARKIVOC, 2004
Palakodety Radha Krishna   +2 more
doaj   +1 more source

Challenges and Perspectives for an Extended Use of the Dye‐Sensitized Solar Cells

open access: yesSolar RRL, Volume 10, Issue 20, 28 October 2026.
DSSC is a photoelectrochemical technology that will support the energy transition. DSSCs initiated the building‐integrated photovoltaics sector and are now proposed in agrivoltaics, archaeophotovoltaics and as indoor solution for powering the Internet of Things. The wavelength selectivity for photoconversion renders DSSCs unique in photovoltaics ambit.
Danilo Dini   +6 more
wiley   +1 more source

Solvent-dependent Sensitization and Photophysical Behavior of Ir<sup>III</sup>-Eu<sup>III</sup> Bimetallic Complexes. [PDF]

open access: yesJ Fluoresc
Canisares FSM   +7 more
europepmc   +1 more source

Selective N‐Functionalization of Pyrazoles

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 40, 27 October 2026.
This review traces the evolution of regioselective N‐functionalization strategies for pyrazoles, a key class of nitrogen heterocycles widely used in medicinal chemistry. Due to rapid tautomerism, N‐functionalization often lacks selectivity, leading to poor and unpredictable regioisomeric outcomes.
Lucas Popek   +2 more
wiley   +1 more source

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