Results 31 to 40 of about 1,162 (178)

Cycloaddition of Benzyne with Alkoxy-Substituted Pyrroline-N-oxides­: Unexpected Rearrangement to an N-Phenylpyrrole

open access: yesSynOpen, 2018
Reaction of enantiopure 3,4-dialkoxy-pyrroline N-oxides with benzyne affords the expected tetrahydrobenzo[d]pyrrolo[1,2-b]isoxazoles along with an unexpected 2,3-disubstitued-N-phenyl-pyrrole derived from an unprecedented rearrangement of the adduct of ...
Franca M. Cordero   +3 more
doaj   +1 more source

Crystal structure of (2R*,3aR*)-2-phenylsulfonyl-2,3,3a,4,5,6-hexahydropyrrolo[1,2-b]isoxazole

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2017
The title compound, C12H15NO3S, was prepared by 1,3-dipolar cycloaddition of 3,4-dihydro-2H-pyrrole 1-oxide and phenyl vinyl sulfone. In the molecule, both fused five-membered rings display a twisted conformation.
Yaiza Hernández   +4 more
doaj   +1 more source

Synthesis and Biological Activity Study of Co and Cr Complexes with α-(2-Salsayl)-N-phenyl Nitrone and Oxide Nanoparticles

open access: yesIndonesian Journal of Chemistry, 2023
This paper describes the synthesis of two complexes from the ligand α-(2-Salsayl)-N-phenyl nitrone with CoCl2 and CrCl2. The ligand was characterized by several spectroscopic techniques (ultraviolet/visible (UV/Vis), nuclear magnetic resonance (1H-NMR ...
Dhamiaa Abdul-Shaheed Issa   +2 more
doaj   +1 more source

5,5,7,7-Tetrametyl-6,7-dihydro-5H-dibenzo[c,e]azepine

open access: yesMolbank, 2023
5,5,7,7-Tetrametyl-6,7-dihydro-5H-dibenzo[c,e]azepine has been synthesized as a possible pro-chiral (or tropos) unit for the construction of a chiral catalyst and as a molecular chirality sensor for the absolute configuration assignment by chiroptical ...
Roberto Bisaccia   +3 more
doaj   +1 more source

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

open access: yesAdvanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen   +9 more
wiley   +1 more source

Strain Release of 1‐Azabicyclo[1.1.0]butanes as a Gateway to Highly Functionalized Azetidines: New Strategies and Structural Motifs

open access: yesChemistry – A European Journal, EarlyView.
Over the past decade, the interest in azetidines has continuously risen, by virtue of their highly appealing pharmaceutical properties. Monocyclic, spirocyclic, and bridged azetidines can be accessed by leveraging 1‐azabicyclo[1.1.0]butanes as precursors.
Yuri Gelato   +3 more
wiley   +1 more source

Crystal structure and Hirshfeld surface analysis of N-[(Z)-(2-hydroxyphenyl)methylidene]aniline N-oxide

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2021
The conformation of the title compound, C13H11NO2, is partially determined by a strong, intramolecular O—H...O hydrogen bond. The crystal packing consists of strongly corrugated layers parallel to the ac plane and associated through C—H...π(ring ...
Shaaban K. Mohamed   +5 more
doaj   +1 more source

Synthesis and characterization of amphiphilic nitroxide 1,1,3,3–tetraethylisoindoline–2–oxyl–5–sodium sulfonate (TEIOSNa)

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract The synthesis and characterization of an amphiphilic nitroxide to be used as a controlling agent in a nitroxide‐mediated living radical polymerization in aqueous dispersion media is presented. In the first stage of nitroxide synthesis (phthalimide protection), two reaction methods were employed: traditional and microwave.
Enrique García‐Leal   +3 more
wiley   +1 more source

From Mn(II)3 to Mn(IV)3: Controlled Multielectron Oxidation and Hydrocarbon Oxygenation Within a 7‐Dipy Trinuclear Scaffold

open access: yesJournal of the Chinese Chemical Society, EarlyView.
A trinuclear manganese complex supported by the 7‐Dipy scaffold undergoes controlled multielectron oxidation from Mn(II)3 to high‐valent Mn(IV)3 states. Spectroscopic signatures, including 16‐line and geff ≈ 5 EPR features, reveal stepwise redox accumulation. The oxidized Mn3 cluster mediates efficient oxygen‐atom transfer to strong CH bonds, enabling
Yu‐Hsuan Chen, Peter Ping‐Yu Chen
wiley   +1 more source

Burn‐in‐Loss‐Free Organic Solar Cells With Over 2000 h of Thermal Stability Through Nitrone‐Based Interface Passivation

open access: yesSmall, EarlyView.
A nitrone‐based molecular passivation strategy enhances the thermal stability of MoOx‐based inverted organic solar cells. The polar N+–O− group of N‐tert‐butyl‐α‐phenylnitrone passivates under‐coordinated molybdenum sites, suppressing oxygen vacancy formation and MoOx diffusion into the bulk heterojunction.
Sanseong Lee   +16 more
wiley   +1 more source

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