Articles with "four component" as a keyword



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Four-Component Reaction for the Synthesis of Indolizines by Copper-Catalyzed Aerobic Oxidative Dehydrogenative Aromatization

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Published in 2017 at "European Journal of Organic Chemistry"

DOI: 10.1002/ejoc.201601272

Abstract: A one-pot, four-component reaction was developed for the synthesis of indolizines from pyridines, α-halide carbonyl compounds, primary amines, and maleic anhydride. The key step in this reaction involved the copper-catalyzed aerobic oxidative aromatization of a… read more here.

Keywords: four component; reaction; synthesis indolizines; component reaction ... See more keywords
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The ground and first excited states of HoS studied by four-component relativistic KR-MCSCF and KRCI

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Published in 2020 at "Theoretical Chemistry Accounts"

DOI: 10.1007/s00214-020-2586-z

Abstract: The X 1 8.5 ground state and the W 1 7.5 first excited state of the HoS molecule are studied by the four-component Kramers-restricted multiconfiguration self-consistent field (KR-MCSCF) method, with an active space of (4 f… read more here.

Keywords: state; first excited; ground; four component ... See more keywords
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Multi-component blends for trapping native and exotic longhorn beetles at potential points-of-entry and in forests

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Published in 2018 at "Journal of Pest Science"

DOI: 10.1007/s10340-018-0997-6

Abstract: The accidental introduction of exotic wood-boring cerambycid beetles represents an ever-increasing threat to forest biosecurity and the economies of many countries. Early detection of such species upon arrival at potential points-of-entry is challenging. Because pheromone… read more here.

Keywords: four component; component; points entry; component blends ... See more keywords
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Four-Component Synthesis of 2-Amino-3-Cyanopyridine Derivatives Catalyzed by Cu@imineZCMNPs as a Novel, Efficient and Simple Nanocatalyst Under Solvent-Free Conditions

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Published in 2018 at "Catalysis Letters"

DOI: 10.1007/s10562-018-2318-3

Abstract: An efficient and convenient method was investigated for synthesis of 2-amino-3-cyanopyridine derivatives via a one-pot four-component reaction of various types of aldehydes, acetophenone, malononitrile, and ammonium acetate in the presence of 10 mg Cu@imineZCMNPs catalyst. The… read more here.

Keywords: four component; microscopy; synthesis amino; amino cyanopyridine ... See more keywords
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Application of four-component dipole shear reflection imaging to interpret the geological structure around a deviated well

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Published in 2019 at "Applied Geophysics"

DOI: 10.1007/s11770-019-0778-x

Abstract: Acoustic reflection imaging in deep water wells is a new application scope for offshore hydrocarbon exploration. Two-dimensional (2D) geological structure images can be obtained away from a one-dimensional (1D) borehole using single-well acoustic reflection imaging.… read more here.

Keywords: four component; reflection imaging; deviated well; structure ... See more keywords
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Facile one-pot synthesis of novel dicyanoanilines fused to dithiane ring via a pseudo-four-component reaction

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Published in 2017 at "Journal of the Iranian Chemical Society"

DOI: 10.1007/s13738-017-1065-5

Abstract: Abstract1,3-Dithian-5-one 1 undergoes a convenient pseudo-four-component combination with different aldehydes 2 and two equivalents of malononitrile 3 in aqueous medium and in the presence of triethylamine. Novel dithian-fused dicyanoanilines 4 are formed efficiently in the… read more here.

Keywords: synthesis novel; four component; facile one; pot synthesis ... See more keywords
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One-pot four-component synthesis of thiazolidin-2-imines using CuI/ZnII dual catalysis: A new class of acetylcholinesterase inhibitors.

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Published in 2019 at "Bioorganic chemistry"

DOI: 10.1016/j.bioorg.2018.12.002

Abstract: An efficient one-pot four-component strategy involving aldehydes, amines, alkynes and isothiocyanates has been developed to access a novel series of thiazolidine-2-imines (5a-x). This process operates under the action of a cooperative catalysis composed of Cu(I)… read more here.

Keywords: four component; catalysis; pot four; one pot ... See more keywords
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Four-component relativistic calculations of electronic excitations in tris-(allyl)-iridium complex: Influence of spin-orbit coupling on the electronic structure and excitation spectrum

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Published in 2019 at "Chemical Physics"

DOI: 10.1016/j.chemphys.2019.04.024

Abstract: Abstract Large-scale four-component relativistic calculations have been carried out for excited states of the tris-(allyl)-iridium complex, Ir(C3H5)3, using the relativistic polarization propagator method. The main focus was on providing insight into the lowest excited states… read more here.

Keywords: excited states; excitation; relativistic calculations; four component ... See more keywords
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Development of a reduced four-component (toluene/n-heptane/iso-octane/ethanol) gasoline surrogate model

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Published in 2019 at "Fuel"

DOI: 10.1016/j.fuel.2019.03.052

Abstract: Abstract The prospect of blending gasoline fuel with ethanol is being investigated as a potential way to improve the knock residence of the base gasoline. However, one of the drawbacks is a lack of proper… read more here.

Keywords: reduced four; ethanol gasoline; model; gasoline ... See more keywords
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One-pot, four-component synthesis of spiroindoloquinazoline derivatives as phospholipase inhibitors

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Published in 2017 at "Tetrahedron"

DOI: 10.1016/j.tet.2017.07.005

Abstract: Abstract An efficient, one-pot, two-step, four-component reaction for the synthesis of spiroindoloquinazoline derivatives in the presence of 1,4-diazabicyclo[2.2.2]octane (DABCO) is described. The syntheses are achieved by the condensation reaction of isatin derivatives, isatoic anhydride, malononitrile… read more here.

Keywords: four component; synthesis spiroindoloquinazoline; spiroindoloquinazoline derivatives; phospholipase inhibitors ... See more keywords
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Nephrotic syndrome following four-component meningococcal B vaccination: Epidemiologic investigation of a surveillance signal.

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Published in 2019 at "Vaccine"

DOI: 10.1016/j.vaccine.2019.07.017

Abstract: BACKGROUND In May 2014, a mass vaccination campaign with four-component meningococcal serogroup B (4CMenB) vaccine was launched in a localized region of Quebec, Canada experiencing high invasive meningococcal B disease endemicity. Active post-marketing surveillance identified… read more here.

Keywords: four component; surveillance; investigation; component meningococcal ... See more keywords