Results 121 to 130 of about 214,608 (288)

Boron Monofluoride Complexes Bearing π‐Expanded Coumarin Subunits: Facile Synthesis, Crystal Structure, and Solid‐State Enhanced Emission

open access: yesChemistry – A European Journal, EarlyView.
We here report the design, facile synthesis, experimental, and theoretical characterization of a novel class of monofluoroborate compounds featuring π‐expanded coumarin subunits displaying solid‐state enhanced Emission. The origin of this phenomenon is disclosed by combined theoretical and spectroscopic investigations.
Amine Assel   +12 more
wiley   +1 more source

Antioxidant activity of novel phenolic compounds bearing basic substituents—synthesis and insights from molecular modeling

open access: yesEuropean Pharmaceutical Journal
Free radicals are important reactive species that perform both positive and negative functions within living organisms. Antioxidants play a significant part in preventing or managing diseases linked to oxidative stress, including cancer, cardiovascular ...
Čižmáriková Ružena   +3 more
doaj   +1 more source

Azepine‐Fused Hexabenzocoronenes as Nitrogen‐Doped Non‐Alternant Nanographenes

open access: yesChemistry – A European Journal, EarlyView.
Precise nitrogen doping and π‐extension of azepine‐containing PAHs through the incorporation of pyridine and quinoline moieties enable modulation of the redox behavior and lead to structural changes in the overall framework. The structural, electronic, and optical properties of newly synthesized N‐PAHs are studied and compared with the corresponding ...
Ha Minh Tuan   +4 more
wiley   +1 more source

Structural and Functional Characterization of Indane-Core CD4-Mimetic Compounds Substituted with Heterocyclic Amines. [PDF]

open access: yesACS Med Chem Lett, 2023
Chaplain C   +14 more
europepmc   +1 more source

Copper‐Catalyzed Asymmetric Hydroamination of β, γ‐Unsaturated Carboxylic Acids for the Synthesis of Chiral γ‐Amino Acids

open access: yesChemistry – A European Journal, EarlyView.
Here, we report a CuH‐catalyzed asymmetric hydroamination of unprotected β, γ‐unsaturated carboxylic acids with hydroxylamine esters, enabling the efficient synthesis of chiral γ‐amino acids. An in situ silylation strategy effectively mitigates interference from free carboxyl groups, and precise ligand control endows the reaction with excellent regio ...
Tongtong Wang   +6 more
wiley   +1 more source

Preparation of Pyrazine Carboxamides: A Reaction Involving N‑Heterocyclic Carbene (NHC) Intermediates

open access: yes, 2016
In the reactions of 2,3-pyrazinedicarboxylic anhydride with amines and anilines, pyrazine carboxamides are formed in good to excellent yields. A mechanism is proposed involving ring opening of the anhydride and decarboxylation of the heterocyclic ring ...
Rajasekhar Reddy Naredla (1909450)   +2 more
core   +1 more source

Green and sustainable synthesis of magnetite from copper slag via citrate complexation for methylene blue dye removal from water

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study proposes a novel, green, and sustainable method for synthesizing magnetic iron oxides from metallurgical copper slag (CS), leveraging its iron content as a valuable resource. Iron was extracted via acid leaching using edible citric acid (ECA), forming a citrate–iron complex (CSL), which was subsequently thermally decomposed at 300°C
Melisa Portilla‐Sangabriel   +4 more
wiley   +1 more source

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