Results 21 to 30 of about 2,245,823 (298)
Hf(OTf)4-Catalyzed Three-Component Synthesis of N-Carbamate-Protected β-Amino Ketones
Molecules, 2022 Hafnium(IV) triflate (Hf(OTf)4) has been identified as a potent catalyst for the direct three-component synthesis of β-carbamate ketones. This new method, featuring a low catalyst loading, fast reaction rate, and solvent-free conditions, provided facile ...
Zhen-Zhen Chen +5 more
doaj +1 more source
Benzannulated Bicycles by Three‐Component Aryne Reactions
Angewandte 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
Novel one-pot process for the synthesis of ethyl 2-imino-4-methyl-2,3-dihydrothiazole-5-carboxylates [PDF]
Journal of the Serbian Chemical Society, 2015 A facile one-pot two-step process for the synthesis of ethyl 2-imino-4-methyl-2,3-dihydrothiazole-5-carboxylates via the cyclocondensation of ethyl 2-thiocyanatoacetoacetate with a variety of hydrazine and hydrazide derivatives has been ...
Beyzaei Hamid, Aryan Reza, Moghadas Hadi
doaj +1 more source
Crystal structure of 4-(naphthalen-2-yl)-2-oxo-6-phenyl-1,2-dihydropyridine-3-carbonitrile
Acta Crystallographica Section E: Crystallographic Communications, 2023 The synthesis and crystal structure of the title compound, C22H14N2O, are described. The title compound was synthesized by a three-component one-pot reaction in DMSO involving chalcone, cyanoacetamide and elemental sulfur as catalyst.
Thai Thanh Thu Bui +3 more
doaj +1 more source
Unfolding symmetric Bogdanov-Takens bifurcations for front dynamics in a reaction-diffusion system [PDF]
, 2019 This manuscript extends the analysis of a much studied singularly perturbed three-component reaction-diffusion system for front dynamics in the regime where the essential spectrum is close to the origin.
Chirilus-Bruckner, Martina +3 more
core +3 more sources
Catalytic Asymmetric Three‐Component Acyl‐Strecker Reaction. [PDF]
ChemInform, 2007 AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Pan, S., List, B.
openaire +3 more sources
Beilstein Journal of Organic Chemistry, 2022 Bifunctional thiourea-catalyzed asymmetric [3 + 2] annulation reactions of 2-isothiocyanato-1-indanones with barbiturate-based olefins have been developed to afford chiral dispiro[indene-pyrrolidine-pyrimidine]s.
Jiang-Song Zhai, Da-Ming Du
doaj +1 more source
Saturation of front propagation in a reaction-diffusion process describing plasma damage in porous low-k materials [PDF]
, 2011 We propose a three-component reaction-diffusion system yielding an asymptotic logarithmic time-dependence for a moving interface. This is naturally related to a Stefan-problem for which both one-sided Dirichlet-type and von Neumann-type boundary ...
A. Kolmogorov +9 more
core +4 more sources
Fast reaction limit of a three-component reaction–diffusion system
Journal 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
A Nanovessel-Catalyzed Three-Component Aza-Darzens Reaction [PDF]
Journal of the American Chemical Society, 2020 It has been previously demonstrated that nanovessels can be highly competent catalysts providing high rate accelerations and unique selectivity to the organic transformations which they mediate. However, for supramolecular assemblies to be considered a standard reagent in organic synthesis they must first demonstrate the ability to catalyze ...
Stephen M. Bierschenk +3 more
openaire +4 more sources