Results 41 to 50 of about 3,033,277 (268)

Facile and green synthesis of 3,5-disubstituted isoxazoles using doped nano-sized copper(I) oxide (Cu2O) on melamine–formaldehyde resin as an efficient nano-catalyst under ultrasonic irradiation [PDF]

شیمی کاربردی روز, 2019
In the present research, doped nano-sized copper(I) oxide (Cu2O) on melamine–formaldehyde resin as a heterogeneous and efficient nano-catalyst has been employed for green and mild synthesis of 3,5-disubstituted isoxazoles under ultrasonic irradiation. In
Somayeh Behrouz
doaj   +1 more source

Stereospecific synthesis of syn-alpha-oximinoamides by a three-component reaction of isocyanides, syn-chlorooximes, and carboxylic acids [PDF]

, 2011
A stereospecific multicomponent reaction among isocyanides, nitrile N-oxides and carboxylic acids provides an efficient synthesis of biologically relevant syn \u3b1 ...
Galli, Simona, Mossetti, Riccardo, Pirali, Tracey, Tron, Gian Cesare   +3 more
core   +1 more source

Intramolecular [3 + 2] Cycloaddition Reactions of Unsaturated Nitrile Oxides. A Study from the Perspective of Bond Evolution Theory (BET).

Journal of Physical Chemistry A, 2018
The reaction mechanism of the [3 + 2] intramolecular cycloaddition of 3,3-dimethyl-2-(prop-2-en-1-yloxy) and (prop-2-en-1-ylsulfanyl) nitrile oxides is analyzed using different DFT functionals with the 6-311++G(d,p) basis set.
A. I. Adjieufack, Vincent Liégeois, Ibrahim Ndassa Mboumbouo, Joseph Ketcha Mbadcam, B. Champagne   +4 more
semanticscholar   +1 more source

Unveiling the Different Chemical Reactivity of Diphenyl Nitrilimine and Phenyl Nitrile Oxide in [3+2] Cycloaddition Reactions with (R)-Carvone through the Molecular Electron Density Theory

Molecules, 2020
The [3+2] cycloaddition (32CA) reactions of diphenyl nitrilimine and phenyl nitrile oxide with (R)-carvone have been studied within the Molecular Electron Density Theory (MEDT). Electron localisation function (ELF) analysis of these three-atom-components
Mar Ríos-Gutiérrez, Luis R. Domingo, M’hamed Esseffar, Ali Oubella, My Youssef Ait Itto   +4 more
doaj   +1 more source

Glucose-derived spiro-isoxazolines are anti-hyperglycemic agents against type 2 diabetes through glycogen phosphorylase inhibition [PDF]

, 2016
International audienceGlycogen phosphorylase (GP) is a target for the treatment of hyperglycaemia in the context of type 2 diabetes. This enzyme is responsible for the depolymerization of glycogen into glucose thereby affecting the levels of glucose in ...
Azay-Milhau, Jacqueline, Balzarin, Sophie, Chajistamatiou, Aikaterini S., Chrysina, Evangelia D., Docsa, Tibor, Duret, Cédric, Gergely, Pál, Goyard, David, Kónya, Bálint, Leroy, Jérémy, Maurel, Patrick, Petit, Pierre, Praly, Jean-Pierre, Somsák, László, Tournier, Michel, Tousch, Didier, Vidal, Sébastien   +16 more
core   +2 more sources

Synthesis of highly functionalized β-aminocyclopentanecarboxylate stereoisomers by reductive ring opening reaction of isoxazolines

Beilstein Journal of Organic Chemistry, 2012
A rapid and simple procedure was devised for the synthesis of multifunctionalized cyclic β-amino esters and γ-amino alcohols via the 1,3-dipolar cycloaddition of nitrile oxides to β-aminocyclopentenecarboxylates.
Melinda Nonn, Loránd Kiss, Reijo Sillanpää, Ferenc Fülöp   +3 more
doaj   +1 more source

Isoxazole derivatives as new nitric oxide elicitors in plants

Beilstein Journal of Organic Chemistry, 2017
Several 3,5-disubstituted isoxazoles were obtained in good yields by regiospecific 1,3-dipolar cycloaddition reactions between aromatic nitrile oxides, generated in situ from the corresponding hydroxyimidoyl chlorides, with non-symmetrical activated ...
Anca Oancea, Emilian Georgescu, Florentina Georgescu, Alina Nicolescu, Elena Iulia Oprita, Catalina Tudora, Lucian Vladulescu, Marius-Constantin Vladulescu, Florin Oancea, Calin Deleanu   +9 more
doaj   +1 more source

A Convenient Synthesis of Novel Isoxazolidine and Isoxazole Isoquinolinones Fused Hybrids

Molecules, 2023
Isoxazolidine, isoxazole, and isoquinolinone rings are present in the structure of several natural products and/or pharmaceutically interesting compounds.
Konstantinos A. Ouzounthanasis, Stergios R. Rizos, Alexandros E. Koumbis   +2 more
doaj   +1 more source

Modified and unmodified zinc oxide as coagent in elastomer compounds [PDF]

, 2014
The aim of this work was to study the activity of unmodifi ed and modifi ed ZnO in the peroxide crosslinking of hydrogenated acrylonitrile-butadiene elastomer (HNBR) and ethylene-propylene copolymer (EPM).
Jesionowski, Teofil, Kołodziejczak-Radzimska, Agnieszka, Maciejewska, Magdalena, Zaborski, Marian   +3 more
core   +1 more source

Oxidation of tertiary amine-derivatized surfaces to control protein adhesion [PDF]

, 2013
Selective oxidation of omega-tertiary amine self-assembled thiol monolayers to tertiary amine N-oxides is shown to transform the adhesion of model proteins lysozyme and fibrinogen upon them.
Biggs, Caroline I., Cooper, A. (Amy), Dobrzanska, Dorota A., Dowson, Christopher G., Evans, Stephen D., Fox, David J., Johnson, Benjamin R., Marsh, Andrew, Randev, Rajan, Stec, Helena M., Taylor, Paul C.   +10 more
core   +1 more source