Results 151 to 160 of about 23,347 (229)

Non-destructive assessment of lime and nano-alumina oxide stabilized clay for new material development. [PDF]

open access: yesSci Rep
Fahimi R   +4 more
europepmc   +1 more source

Visible Light‐Induced Transformation of β‐Aryl‐α,β‐Unsaturated Acylsilanes into Indenol Derivatives via Alkenyl Siloxycarbenes

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 12, 17 June 2026.
Visible light activates β‐aryl α,β‐unsaturated acylsilanes to form indenols without catalysts or metals. A stepwise photochemical cascade reorganizes simple precursors through isomerization, rearrangement, and ring formation. The process highlights sustainable reaction design while showcasing the synthetic power of acylsilane photochemistry and the ...
Adrián Álvarez   +4 more
wiley   +1 more source

Advanced ultrasonic characterization of recycled steel fiber-reinforced mortars: Integrating nonlinear parameters for optimal fiber dosage determination. [PDF]

open access: yesSci Prog
Amjad U   +8 more
europepmc   +1 more source

1,1‐Disubstituted Vinylbromides: Versatile Building Blocks for the Synthesis of Nitrogen‐Containing Heterocycles

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 23, 16 June 2026.
1,1‐Disubstituted vinylbromides are key intermediates for constructing nitrogen‐containing heterocycles. This review provides an overview of the synthetic applications of 1,1‐disubstituted vinylbromides and summarizes recent developments in reaction methodologies, mechanistic insights, and the structural diversity of N‐heterocyclic compounds accessible
Anne Westermeyer   +6 more
wiley   +1 more source

Structure‐Based Design, Synthesis, and Evaluation of Novel Ponatinib Derivatives With a Significantly Altered Selectivity Profile

open access: yesChemMedChem, Volume 21, Issue 11, 15 June 2026.
We developed new derivatives of the cancer drug ponatinib, significantly reducing and altering its spectrum of target kinases. Compound 5 retained the efficacy in inhibiting the colony formation of MDA‐MB‐231 cells and acted primarily on B‐Raf and Flt‐1 as its main targets in a kinase panel.
Tobias Betzholz   +7 more
wiley   +1 more source

Enantioselective Tandem Povarov/Urech–Read Reaction for the Synthesis of Dihydroquinoline/Hydantoin Hybrids

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 11, 3 June 2026.
Herein, an organocatalytic asymmetric synthesis of dihydroquinoline/hydantoin hybrids is described. The synthetic protocol involves a tandem reaction comprising a phosphoric acid–catalyzed initial Povarov dimerization of in situ generated imine/enamine mixtures under tautomeric equilibrium, followed by a Urech–Read reaction of the 1,2‐dihydroquinoline ...
Zuriñe Serna‐Burgos   +5 more
wiley   +1 more source

Orientación urbana en la UPV

open access: yes, 2011
La sección de orientación de la UPV organiza la III prueba de la liga provincial de orientación en el Campus de ...
openaire   +2 more sources

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