Results 71 to 80 of about 4,881 (175)

Exploring quinolinone–chalcones: Synthesis, antioxidant potential and industrial applications in biofuels

Biofuels, Bioproducts and Biorefining, Volume 19, Issue 6, Page 1765-1783, November/December 2025.
Abstract Biofuels undergo oxidative degradation, which reduces their storage stability and efficiency, hindering their large‐scale adoption and integration into the global energy matrix. To address this issue, we synthesized and characterized four novel quinolinone–chalcone derivatives (substituted with Br, Cl, OCH3 and OCH2CH3) as potential ...
Vitor S. Duarte, Renata Layse G. de Paula, Leonardo R. Almeida, Giulio D. C. D’Oliveira, Caridad N. Pérez, Jean M. F. Custódio, Valter H. Carvalho‐Silva, Andrea Lombardi, Hamilton B. Napolitano   +8 more
wiley   +1 more source

Thioxanthone: A Benchmark Photocatalyst for Organic Synthesis

ChemCatChem, Volume 17, Issue 16, August 18, 2025.
Thioxanthone is a highly versatile and effective organocatalyst for photochemical applications, with its low‐toxicity, metal‐free structure driving growing interest in sustainable photocatalysis. Building on our previous 2021 review, this update covers advances from 2021–2025 in thioxanthone‐based synthetic organic photochemistry – excluding ...
Vera P. Demertzidou, Elpida Skolia, Christoforos G. Kokotos   +2 more
wiley   +1 more source

Synthesis of Some Novel Chalcone and 3,5‐Disubstituted Pyrazoline Derivatives: Evaluation of Their α‐Amylase and α‐Glucosidase Inhibitory Activities In Vitro and In Silico [PDF]

Arch Pharm (Weinheim)
A novel pyrazoline derivative (P2) was synthesized and demonstrated potent α‐glucosidase inhibition (IC50 = 2.10 µM), significantly surpassing acarbose and highlighting its promise as an effective oral antidiabetic agent. ABSTRACT This study reports the synthesis of some novel chalcone (C1–C3) and 3,5‐disubstituted pyrazoline derivatives (P1–P3 ...
Erbay F, Akatin M, Demir F, Kahriman N, Colak A, Ertunga N, Küçük M.   +6 more
europepmc   +2 more sources

Effect of Water‐Repellent Treatment of Heating Surface on a Leidenfrost Droplet

Chemical Engineering &Technology, Volume 48, Issue 8, August 2025.
This study examined Leidenfrost droplet flow on heated surfaces with and without water‐repellent treatment. PIV showed that internal flow velocity rose with temperature and was higher on treated surfaces due to earlier vapor film formation. The results indicate that water‐repellent treatment lowers the Leidenfrost temperature and enhances droplet ...
Kenta Kotera, Ippo Ota, Hayato Masuda, Yoshiyuki Komoda, Naoto Ohmura   +4 more
wiley   +1 more source

Synthesis and Biological Evaluation of Some New Chalcones Containing 2,5-Dimethylfuran Moiety

E-Journal of Chemistry, 2011
A series of new chalcones (3a-g) were prepared by Claisen-Schmidt condensation of 3-acetyl-2,5-dimethylfuran with various substituted aromatic aldehydes in presence of aqueous solution of potassium hydroxide and ethanol at room temperature.
S. Sridhar, S. C. Dinda, Y. Rajendra Prasad   +2 more
doaj   +1 more source

Synthesis and Antimicrobial Activity of Some Novel Chalcones of 2-Hydroxy -1-Acetonapthone and 3-Acetyl Coumarin

E-Journal of Chemistry, 2006
Five novel chalcones were synthesised by condensing 2-hydroxy-1-acetonaphthone with aldehyde derivatives in dilute ethanolic potassium hydroxide solution at room temperature according to Claisen-Schmidt condensation and another five novel chalcones were ...
Y. Rajendra Prasad, P. Ravi Kumar, Ch. Asha Deepti, M. Venkata Ramana   +3 more
doaj   +1 more source

Original enzyme-catalyzed synthesis of chalcones: Utilization of hydrolase promiscuity [PDF]

Journal of the Serbian Chemical Society, 2016
E-chalcone was obtained with very high stereoselectivity for the first time by an enzyme-catalyzed Claisen-Schmidt condensation between benzaldehyde and acetophenone.
Mitrev Yavor N., Mehandzhiyski Aleksander Y., Batovska Daniela I., Liese Andreas, Galunsky Boris   +4 more
doaj   +1 more source

A Highly Efficient Method for Synthesis of Bisarylmethylidenes of Cyclic Ketones in [BMIm]Cl/NaOH System as New and Recyclable Catalyst [PDF]

, 2014
An ionic liquid 1-Butyl-3-methylimidazoliumchloride[BMIm]Cl/sodium hydroxide system, was employed as a catalyst for the fast and one-pot crossed aldol-condensation of various aromatic aldehydes and cyclic ketones, to produce a variety of substituted α,α'-
Javad Eslami, Mohammad M. Mojtahedi, Shahrzad Javanshir   +2 more
core   +1 more source

Structure−Activity Relationships of New 1‐Aryl‐1H‐Indole Derivatives as SARS‐CoV‐2 Nsp13 Inhibitors

ChemMedChem, Volume 20, Issue 14, July 18, 2025.
SARS‐CoV‐2 nsp13 is a promising target to develop effective antivirals. Pursuing the studies, new indolyl derivatives to deepen SARs are designed. The newly synthesized N‐aryl indoles are active vs both nsp13‐associated activities. They exert antiviral activity vs SARS‐CoV‐2 infected cells with no cytotoxicity.
Valentina Noemi Madia, Roberta Emmolo, Elisa Patacchini, Donatella Amatore, Stefania Maloccu, Davide Ialongo, Aurora Albano, Giuseppe Ruggieri, Emanuele Cara, Laura Zarbo, Antonella Messore, Riccardo De Santis, Alessandra Amoroso, Florigio Lista, Francesca Esposito, Enzo Tramontano, Angela Corona, Roberto Di Santo, Roberta Costi   +18 more
wiley   +1 more source

Skeletal Rearrangements of Amides via Breaking Inert Bonds

Chemistry – A European Journal, Volume 31, Issue 25, May 5, 2025.
This review highlights advances in amide skeletal rearrangement reactions over the past two decades, categorized by the initial bond cleavages: C─N bond cleavage, C─C bond cleavage, and C═O bond activation. It summarizes emerging strategies, mechanistic insights, and synthetic applications, providing a focused perspective on recent developments in this
Rui Zhang, Guangbin Dong
wiley   +1 more source