Results 51 to 60 of about 2,229,508 (201)

One-pot multicomponent nitro-Mannich reaction using a heterogeneous catalyst under solvent-free conditions [PDF]

, 2018
An environmentally-friendly, one-pot multicomponent reaction of various aldehydes, amines and nitroalkanes for the synthesis of β-nitroamines is here described.
Bosica, Giovanna, Zammit, Ramon
core   +2 more sources

Synthesis of polyaromatic derivatives of indenopyrrole and investigation of their absorption and emission behaviors

Results in Chemistry
In this work, new derivatives of 2-methyl-dihydroxyindenopyrrole were synthesized using a three-component reaction between polycyclic aromatic amine (1-aminopyrene or 1-aminonaphthalene), ninhydrin and a β-dicarbonyl in the presence of Lewis acid ...
Maedeh Zolfalizadeh, Zarrin Ghasemi, Somayeh Rashtabad Jadidi, Forough Nasuhipur   +3 more
doaj   +1 more source

A Facile Synthesis of Polysubstituted Pyrroles by One-Pot Three-Component Reaction

E-Journal of Chemistry, 2012
A new and efficient one-pot synthesis of polysubstituted pyrrole derivatives by three-component reaction between dialkyl acetylenedicarboxylates, triphenylphosphine, 2-aminopyridin derivatives in the presence of arylglyoxals is described.
Hossein Anaraki-Ardakani, Maziar Noei, Mina Karbalaei-Harofteh, Shahab Zomorodbakhsh   +3 more
doaj   +1 more source

Some cyano-substituted spiro-linked pyrazolines and pyrrolidines with antimicrobial activity [PDF]

Известия Саратовского университета. Новая серия: Серия Химия. Биология. Экология
This work summarizes one-pot synthetic approaches to spiro-fused (di)azoles, which are promising in terms of studying biological activity. Proposed approaches involve condensation reactions of (hetero)cyclic ketones, methylene active moieties, and N ...
Meshcheryakova, Anna A., Borisova, Svetlana Vasilievna, Konstantinova, Ekaterina A., Vidlatskaya, Daria V., Burygin, Gennady L., Sorokin, Vitaly Viktorovich   +5 more
doaj   +1 more source

Efficient sodium selenate-catalyzed synthesis of 3,4-dihydro-2(1H)-pyrimidinones and –thiones under solvent-free conditions

Bulletin of the Chemical Society of Ethiopia, 2009
Sodium selenate efficiently catalyzes the three-component Biginelli reaction of an aldehyde, a,β-keto ester and urea or thiourea under solvent-free conditions to afford the corresponding 3,4-dihydropyrimidin-2(1H)-ones or –thiones in excellent yields.
Rahim Hekmatshoar, Maryam Heidari, Majid M. Heravi, Bita Baghernejad   +3 more
doaj  

Crystal structure of 3-benzyl-2-[(E)-2-(furan-2-yl)ethenyl]-2,3-dihydroquinazolin-4(1H)-one and 3-benzyl-2-[(E)-2-(thiophen-2-yl)ethenyl]-2,3-dihydroquinazolin-4(1H)-one from synchrotron X-ray diffraction

Acta Crystallographica Section E: Crystallographic Communications, 2018
The chiral title compounds, C21H18N2O2, (I), and C21H18N2OS, (II) – products of the three-component reaction between benzylamine, isatoic anhydride and furyl- or thienyl-acrolein – are isostructural and form isomorphous racemic crystals.
Flavien A. A. Toze, Vladimir P. Zaytsev, Lala V. Chervyakova, Elisaveta A. Kvyatkovskaya, Pavel V. Dorovatovskii, Victor N. Khrustalev   +5 more
doaj   +1 more source

Salicylic Acid-catalyzed Three-component Synthesis of 1-Amido/thioamidoalkyl-2-naphthols Under Solvent-free Conditions

Orbital: The Electronic Journal of Chemistry, 2019
A simple, efficient, and green procedure for the solvent-free synthesis of 1-amido/thioamidoalkyl-2-naphthols by one-pot stirring of starting reactants at 100 °C has been introduced.
Hassan Darbandi, Hamzeh Kiyani
doaj   +3 more sources

Universality classes in nonequilibrium lattice systems [PDF]

, 2002
This work is designed to overview our present knowledge about universality classes occurring in nonequilibrium systems defined on regular lattices.
Odor, Geza
core   +3 more sources

Silver-catalyzed synthesis of β-fluorovinylphosphonates by phosphonofluorination of aromatic alkynes

Beilstein Journal of Organic Chemistry, 2020
A silver-catalyzed three-component reaction involving alkynes, Selectfluor®, and diethyl phosphite was employed for the one-pot formation of C(sp2)–F and C(sp2)–P bonds to provide an efficient access to β-fluorovinylphosphonates in a highly regio- and ...
Yajing Zhang, Qingshan Tian, Guozhu Zhang, Dayong Zhang   +3 more
doaj   +1 more source

A hunter-gatherer-farmer population model: Lie symmetries, exact solutions and their interpretation

, 2014
The Lie symmetry classification of the known three-component reaction-diffusion system modelling the spread of an initially localized population of farmers into a region occupied by hunter-gatherers is derived.
Anna Niemcunowicz-Janica (457677), Anna Szpakowicz (457672), Ewa Waszkiewicz (457674), Grzegorz Opolski (117217), Karol Adam Kaminski (457681), Marek Kiliszek (117207), Maria Franaszczyk (236545), Małgorzata Skawronska (457676), Rafal Ploski (348433), Sławomir Dobrzycki (457679), Witold Pepinski (457673), Włodzimierz Jerzy Musial (457680)   +11 more
core   +4 more sources