Results 91 to 100 of about 9,953 (212)

One-pot three-component synthesis of quinoxaline and phenazine ring systems using Fischer carbene complexes

open access: yesBeilstein Journal of Organic Chemistry, 2010
One-pot three-component coupling of o-alkynylheteroaryl carbonyl derivatives with Fischer carbene complexes and dienophiles leading to the synthesis of quinoxaline and phenazine ring systems has been investigated. This involves the generation of furo[3,4-
Priyabrata Roy, Binay Krishna Ghorai
doaj   +1 more source

Foodborne Carcinogens: Formation Pathways, Health Risks, and Cutting‐Edge Physical and Chemical Prevention Strategies

open access: yeseFood, Volume 7, Issue 3, June 2026.
This review highlights the formation of foodborne carcinogens during processing and evaluates different mitigation strategies, including natural antioxidants and modern cooking techniques, to reduce associated cancer risks and enhance food safety. ABSTRACT Food processing methods, though vital for improving food safety, taste, and shelf life, can ...
Naglaa S. Ashmawy   +4 more
wiley   +1 more source

Rechargeable organic–air redox flow batteries [PDF]

open access: yes, 2018
A rechargeable organic–air flow battery based on aqueous electrolytes is proposed and tests are conducted in a divided cell with a three-electrode configuration. Quinoxaline is used as the negative redox couple due to its low electrode potential of c.a. −
Aili, D.   +4 more
core   +1 more source

ChemBang: Expanding the Chemical Space Around Small Molecules

open access: yesMolecular Informatics, Volume 45, Issue 5, May 2026.
Schematic diagram of the underlying concepts behind ChemBang and the molecular generation process from a seed molecular structure by applying the three main categories of chemical transformations, namely, interchange of small substituents, replacement of ring systems, and scaffold enlargement by additional ring systems.
Diana Montes‐Grajales   +3 more
wiley   +1 more source

Silyl Rearrangements in Gold‐Catalyzed Transformations

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 15, 22 April 2026.
The synergy between the exceptional ability of gold catalysts to activate unsaturated substrates and the inherent tendency of organosilicon reagents to undergo silyl‐group rearrangements has unlocked a range of novel transformations, enabling access to otherwise challenging molecular architectures.
Patricia García‐Martínez   +1 more
wiley   +1 more source

Quinoxaline polymers and copolymers derived from 1, 4-BIS(1'-napthalenyloxayl) benzene [PDF]

open access: yes
A route for the synthesis of a new monomer, 1,4-bis(1'-naphthalenyl)-oxayl benzene, was devised, and six polymers and copolymers were prepared from this monomer, 1,4-bis(phenyloaxaly)benzene, 3,3'-diaminobenzidine and 3,3',4,4'-tetraaminobenzophenone ...
Loszewski, R. C., Port, W. S.
core   +1 more source

Dipicolylamine styryldiazine derivatives: Synthesis and photophysical studies

open access: yes, 2015
International audienceDifferent D-π-A push-pull mols. in which dipicolylamine (DPA) is used as the donor group, different diazines as the acceptor groups, and styryl as the π-conjugated spacer have been synthesized in a straightforward manner by aldol ...
Achelle, Sylvain   +3 more
core   +3 more sources

The p110 delta structure: mechanisms for selectivity and potency of new PI(3)K inhibitors. [PDF]

open access: yes, 2010
Deregulation of the phosphoinositide-3-OH kinase (PI(3)K) pathway has been implicated in numerous pathologies including cancer, diabetes, thrombosis, rheumatoid arthritis and asthma.
Alex Berndt   +16 more
core   +2 more sources

Bay‐functionalized [7]Helicene Bilayer Nanographenes

open access: yesAdvanced Optical Materials, Volume 14, Issue 13, 3 April 2026.
Bay‐functionalized [7]helical bilayer nanographenes are synthesized via a scalable, modular strategy enabling late‐stage diversification. Tailored methoxy, diketone, and phenazine substitutions precisely tune redox, photophysical, and chiroptical properties, delivering strong electronic circular dichroism and bright circularly polarized luminescence ...
Anmol Thanai   +9 more
wiley   +1 more source

WL, I-E and EIS Studies on the Corrosion Behaviour of Mild Steel by 7-substituted 3-methylquinoxalin-2(1H)-ones and thiones in Hydrochloric Acid Medium

open access: yesInternational Journal of Electrochemical Science, 2012
The present study examines the use of some 7-R-3-methylquinoxalin-2(1H)-ones and thiones, namely 3-methylquinoxalin-2(1H)-one (Q=O), 3-methylquinoxalin-2(1H)-thione (Q=S), 7-chloro-3- methylquinoxalin-2(1H)-one (Cl-Q=O) and 7-chloro-3-methylquinoxalin-2 ...
K. Benbouya   +7 more
doaj   +1 more source

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