Results 91 to 100 of about 29,062 (270)

α,β‐Alkylation Reactions Catalyzed by Ruthenium Triphenylphosphine Complexes Bearing Substituted Pyridine–Quinoline Based Ligands

European Journal of Inorganic Chemistry, EarlyView.
A series of new air‐stable ruthenium(II) bis‐triphenylphosphine complexes comprising substituted pyridine–quinoline ligands have been developed via a one‐pot procedure. The new complexes successfully serve as scaffolds to promote catalytic CC bond formation, more precisely the α‐alkylation of ketones with primary alcohols, via the borrowing hydrogen ...
Nikolaos Zacharopoulos, Panagiotis‐Georgios Kanellopoulos, Evangelos Bakeas, Antigoni Cheilari, Gregor Schnakenburg, Athanassios Chrissanthopoulos, Athanassios Philippopoulos   +6 more
wiley   +1 more source

Ethyl 1′′-benzyl-1′-methyl-2′′-oxodispiro[indeno[1,2-b]quinoxaline-11,3′-pyrrolidine-2′,3′′-indoline]-4′-carboxylate

Acta Crystallographica Section E, 2013
In the title compound, C36H30N4O3, the quinoxaline–indene system is roughly planar, with a maximum deviation from the mean plane of 0.218 Å for the C atom shared with the central pyrrolidine ring.
Piskala Subburaman Kannan, Srinu Lanka, Sathiah Thennarasu, Elumalai Govindan, Arunachalathevar SubbiahPandi   +4 more
doaj   +1 more source

Polyphenylquinoxalines via Aromatic Nucleophilic Displacement [PDF]

Polyphenylquinoxalines are produced by an aromatic nucleophilic displacement reaction involving an activated aromatic dihalide with an appropriate quinoxaline monomer. Polyphenylquinoxalines are high temperature thermoplastics used as adhesives, coatings,
Connell, John W., Hergenrother, Paul M.
core   +1 more source

Electrochemical Hydrogenation of N‐Heterocycles and Related Substrates: A Mini‐Review

Electrochemical Science Advances, EarlyView.
ABSTRACT Catalytic hydrogenation refers to the (often) metal‐mediated addition of dihydrogen (H2) equivalents to unsaturated compounds to form new element‐hydrogen bonds. This conceptually simple reaction is ubiquitous in the production of a vast number of essential chemicals.
Esteban Garcia‐Torres, David E. Herbert   +1 more
wiley   +1 more source

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

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

Synthesis and biological evaluation of novel substituted pyrrolo[1,2-a]quinoxaline derivatives as inhibitors of the human protein kinase CK2 [PDF]

, 2013
Herein we describe the synthesis and properties of substituted phenylaminopyrrolo[1,2-a]quinoxaline-carboxylic acid derivatives as a novel class of potent inhibitors of the human protein kinase CK2.
Alvarez, Lautaro Damian, Baratin, Sophie, Bollacke, Andre, Desplat, Vanessa, Guillon, Jean, Joachim, Jose, Le Borgne, Marc, Marchivie, Mathieu, Moreau, Stéphane, Pecci, Adali, Pinaud, Noël, Rimbault, Charlotte, Roche, Séverine, Savrimoutou, Solène   +13 more
core   +2 more sources

Food Toxicology and Safety: Evaluating Dietary Risks and Functional Ingredients

Food Bioengineering, EarlyView.
The pyramid's foundation reminds us that true health begins with daily habits—engage in 30–60 min of physical activity, nurture social connections and secure 7–9 h of restorative sleep each night to support metabolism, mood regulation, and hormonal balance—while continuously hydrating with 8–12 glasses of water and unsweetened herbal infusions (green ...
Sujaritha Jayaraj, Lavanya Kothandan, Vijay Babu Murugan, Saravana Kumar Prakash, Vandhana Vijayakumar, Elizabeth Rani   +5 more
wiley   +1 more source

The effect of bambermycin, carbadox, chlortetracycline and olaquindox on antibiotic resistance in intestinal coliforms: a new animal model [PDF]

, 1984
Groups of germ-free mice kept in isolators and associated with faecal microflora from piglets were continuously given either water or a solution of one of the following: chlortetracycline (20 micrograms/ml), carbadox (50 micrograms/ml), olaquindox (50 ...
Corpet, Denis E.
core   +1 more source

Synthesis of quinoxaline 1,4-di-N-oxide derivatives on solid support using room temperature and microwave-assisted solvent-free procedures [PDF]

, 2011
We describe the synthesis of 12 new ethyl and methyl quinoxaline-7-carboxylate 1,4-di-N-oxide derivatives on solid supports with room temperature and microwave-assisted solvent-free procedures.
Bocanegra-Garcia, V. (Virgilio), Gomez-Caro, L.C. (Lilia C.), Monge, A. (Antonio), Rivera, G. (Gildardo), Sanchez-Sanchez, M. (Mario)   +4 more
core   +1 more source

Glial Versus Neuronal Na+/K+‐ATPase in Activity‐Evoked K+ Clearance and Their Sensitivity to Elevated Extracellular K+

Glia, EarlyView.
The glial Na+ pump regulates [K+]o during neuronal activity, and the neuronal version restores [K+]o to baseline. Spreading depression‐related rise of K+ does not cause SD propagation via suppression of Na+/K+‐ATPase or glutamate transport. ABSTRACT Neuronal activity in the central nervous system is associated with a [K+]o transient that is swiftly ...
Brian Skriver Nielsen, Brian Roland Larsen, Afnan Bilal Ghazal, Adriana Katz, K. C. Brennan, Steven J. D. Karlish, Nanna MacAulay   +6 more
wiley   +1 more source