Results 31 to 40 of about 2,239,326 (300)

Benzannulated Bicycles by Three‐Component Aryne Reactions

open access: yesAngewandte Chemie International Edition, 2011
Triple crown: A pair of three-component coupling reactions between arynes, isocyanides, and either activated alkynes or phenyl esters generates unusual iminoindenones or phenoxy iminoisobenzofurans (see scheme), the latter of which may be advanced to o-ketobenzamides by performing direct hydrolysis.
Allan, Kevin M.   +2 more
openaire   +3 more sources

Multicomponent Reaction Discovery: Three-Component Synthesis of Spirooxindoles [PDF]

open access: yesOrganic Letters, 2010
The Lewis acid-catalyzed, three-component reaction of isatin and two 1,3-dicarbonyl compounds is reported. Reactions proceed with high efficiency under mild reaction conditions and with good functional group tolerance to afford spirooxindole pyranochromenedione derivatives.
Bo, Liang   +3 more
openaire   +2 more sources

N-methylimidazole mediated synthesis of aryl alkyl ethers under microwave irradiation and solvent free conditions [PDF]

open access: yesJournal of the Serbian Chemical Society, 2015
Microwave-assisted three-component reaction has been established for the synthesis of aryl alkyl ethers. The reaction was carried out under solvent free conditions in the presence of N-methylimidazole and dialkylacetylenedicarboxylate to furnish
Djahaniani Hoorieh   +2 more
doaj   +1 more source

Early contingentnegative variation of the EEG and attentional flexibility are reduced in hypotension [PDF]

open access: yes, 2002
This study explored the question as to whether hypotension is related to decreased attentional performance and reduced cortical activation. A total of 50 females aged 19 44 years participated in the study. Attentional performance was assessed using three
Duschek, Stefan   +4 more
core   +1 more source

Microwave-assisted Synthesis of Acridine-1,8(2H,5H)-diones via a One-pot, Three Component Reaction [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2017
A new and improved protocol for the synthesis, in good to excellent yields, of acridine-1,8(2H,5H)-diones is described, involving a one-pot, three component reaction of dimedone, arylglyoxals, and ammonium acetate in water under microwave irradiation.
Ahmad Poursattar Marjani   +3 more
doaj  

Time-delayed feedback control of breathing localized structures in a three-component reaction-diffusion system

open access: yes, 2014
We investigate the dynamics of a single breathing localized structure in a three-component reaction-diffusion system subjected to the time-delayed feedback.
Gurevich, Svetlana V.
core   +1 more source

Study of relativistic bound state wave functions in quasielastic (e,e'p) reactions [PDF]

open access: yes, 1998
The unpolarized response functions of the quasielastic $^{16}O(e,e^\prime p)^{15}N$ reaction are calculated for three different types of relativistic bound state wave functions.
Boersma   +33 more
core   +2 more sources

Cyanoacetamide MCR (III): Three-Component Gewald Reactions Revisited [PDF]

open access: yesJournal of Combinatorial Chemistry, 2009
Cyanoacetic acid derivatives are the starting materials for a plethora of multicomponent reaction (MCR) scaffolds. Here we describe valuable general protocols for the synthesis of arrays of 2-aminothiophene-3-carboxamides from cyanoacetamides, aldehydes or ketones, and sulfur via a Gewald-3CR variation.
Kan, Wang   +2 more
openaire   +2 more sources

A Novel Indium-Catalyzed Three-Component Reaction: General and Efficient One-Pot Synthesis of Substituted Pyrroles [PDF]

open access: yes, 2011
A convenient and general approach towards the synthesis of substituted pyrroles from propargylic acetates, silyl enol ethers, and primary amines was described. This novel transformation was catalyzed by indium trichloride in a one-pot synthesis, and high
Hao, Lu   +4 more
core   +1 more source

Fast reaction limit of a three-component reaction–diffusion system

open access: yesJournal of Mathematical Analysis and Applications, 2011
The authors consider a three-component reaction-diffusion system with a reaction rate parameter, and investigate its singular limit as the reaction rate tends to infinity. The limit problem is given by a free boundary problem, which possesses three regions separated by the free boundaries.
Murakawa, H., Ninomiya, H.
openaire   +1 more source

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