Results 51 to 60 of about 10,626 (204)

Synthesis of Anthraquinones by Iridium-Catalyzed [2 + 2 + 2] Cycloaddition of a 1,2-Bis(propiolyl)benzene Derivative with Alkynes

open access: yesInorganics, 2019
[2 + 2 + 2] cycloaddition of a 1,2-bis(propiolyl)benzene derivative with terminal and internal alkynes takes place in the presence of [Ir(cod)Cl]2 (cod = 1,5-cyclooctadiene) combined with bis(diphenylphosphino)ethane (DPPE) to give anthraquinones in 42 ...
Takahiro Sawano   +2 more
doaj   +1 more source

Synthesis and Optical Properties of Diboron Complexes of 1,4-Anthraquinone Derivatives. [PDF]

open access: yesChemistry
1,4‐Diboron complexes exhibit near‐infrared fluorescence, in contrast to non‐emissive 1,5‐diboron analogues. Fluorescence quantum yields decrease with increasing electron‐donating substituents, attributed to enhanced nonradiative decay via intramolecular PeT.
Kubota Y   +10 more
europepmc   +2 more sources

Enzymatic Electrosynthesis for Sustainable CO2 Conversion: Advancing Circular Carbon Economy

open access: yesCarbon Energy, EarlyView.
Enzymatic electrosynthesis (EES) offers molecular precision in synthesizing value‐added products from CO2. We highlight its distinct edge over alternative enzyme‐hybrid systems and analyze electron transfer pathways. Key strategies to overcome electron transfer bottlenecks and expand product diversity are addressed, and also data‐driven approaches for ...
Yan Xie   +7 more
wiley   +1 more source

Characterization of the Interaction of Known G‐quadruplex Ligands With a Minimal i‐Motif Structure

open access: yesChemistry – A European Journal, EarlyView.
The destabilization of a minimal i‐Motif (iM) structure by TMPyP4 is driven by ligand recognition of one terminal iM structural domain. ABSTRACT Peculiar genomic regions are prone to evolve transiently from double‐helix DNA to noncanonical secondary structures in response to physiological stress.
Davide Auricchio   +3 more
wiley   +1 more source

Silver‐Mediated Deuterium Labelling of Quinones and Related Compounds by Hydrogen Isotope Exchange With D2O

open access: yesChemistry – A European Journal, EarlyView.
A new silver‐catalyzed H/D exchange reaction was developed for the labelling of quinones and related compounds. Both homogeneous and heterogeneous catalytic processes were implemented using heavy water as a simple deuterium source. The corresponding deuterated compounds were obtained with high isotopic enrichment through a practical method that opens ...
Joyce C. de Oliveira   +7 more
wiley   +1 more source

A Naphthalene Monoimide Meisenheimer Complex as Strong Organic Hydride Donor for Metal‐Free CO2 Reduction

open access: yesChemistry – A European Journal, EarlyView.
A Meisenheimer complex derived from two‐fold reduction and protonation of naphthalene monoamide has been identified as a strong organic hydride donor which is able to reduce CO2. ABSTRACT Selective CO2 reduction to formate is challenging due to similar thermodynamics for the reaction to other products such as carbon monoxide and molecular hydrogen ...
C. Jasslie Nielsen   +5 more
wiley   +1 more source

Estudo químico de duas plantas medicinais da amazônia: Philodendron scabrum k. Krause (araceae) e Vatairea guianensis aubl. (fabaceae) Chemical study of two Amazonian medicinal plants: Philodendron scabrum K. Krause (Araceae) and Vatairea guianensis Aubl. (Fabaceae)

open access: yesActa Amazonica, 2011
Este trabalho relata o estudo químico de duas plantas medicinais da Amazônia: Philodendron scabrum K. krause (Araceae) e Vatairea guianensis Aubl. (Fabaceae). As composições dos óleos essenciais dos cipós de P. scabrum e dos frutos de V.
Ivonei Ottobelli   +6 more
doaj   +1 more source

Decolorization of Disperse Dyes in Textile Polyester Recycling Using Activated Carbon

open access: yesChemie Ingenieur Technik, EarlyView.
Decolorization of disperse dyes from disodium terephthalate solutions is examined using two activated carbons with varying pore structures and surface properties. The potential impact of pore size distribution and surface charge on the adsorption process is assessed to support optimized adsorbent selection.
Charlotte Lücking   +2 more
wiley   +1 more source

Plants-occurring Anthraquinones as Photosensitive Compounds for Photodynamic Method: A Critical Overview

open access: yesFrontiers in Bioscience-Landmark
The review focuses on the recent knowledge on natural anthraquinones (AQs) of plant origin and their potential for application in an exclusive medicinal curative and palliative method named photodynamic therapy (PDT).
Vanya Mantareva   +3 more
doaj   +1 more source

Boosting Built‐In Electric Field via Asymmetric Architecture for Synergistic Production of H2O2 and Benzaldehyde

open access: yesEcoEnergy, EarlyView.
Asymmetric architecture was built for synergistic production of H2O2 and benzaldehyde. The reaction mechanism involves the synergistic utilization of electrons and holes, which jointly enables efficient oxygen activation to support the simultaneous production of two high‐value products.
Han Wang   +7 more
wiley   +1 more source

Home - About - Disclaimer - Privacy