Articles with "lewis acids" as a keyword



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Effects of Lewis Acids on Photoredox Catalysis

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Published in 2017 at "Asian Journal of Organic Chemistry"

DOI: 10.1002/ajoc.201600576

Abstract: The reactivity of organic photoredox catalysts in oxidation reactions is enhanced by the addition of Lewis acids, which bind to the catalyst to increase its oxidizing ability. Redox-inactive metal ions, such as Sc3+, also act… read more here.

Keywords: effects lewis; chemistry; lewis acids; acids photoredox ... See more keywords
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From Conventional Lewis Acids to Heterogeneous Montmorillonite K10: Eco-Friendly Plant-Based Catalysts Used as Green Lewis Acids.

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Published in 2018 at "ChemSusChem"

DOI: 10.1002/cssc.201702435

Abstract: The concept of green chemistry began in the USA in the 1990s. Since the publication of the 12 principles of this concept, many reactions in organic chemistry have been developed, and chemical products have been… read more here.

Keywords: conventional lewis; acids heterogeneous; chemistry; montmorillonite k10 ... See more keywords
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Aluminabenzene‐based Lewis superacids and weakly coordinating anions

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Published in 2023 at "Journal of Computational Chemistry"

DOI: 10.1002/jcc.27104

Abstract: Quantum‐chemical calculations were used to describe both the acidity of aluminabenzene‐based Lewis acids and stability of aluminabenzene‐based anions. Aluminabenzene itself was found to exhibit greater acidity than antimony pentaflouride, and thus can be qualified as… read more here.

Keywords: lewis superacids; lewis acids; aluminabenzene based; anions aluminabenzene ... See more keywords
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Metalate‐Mediated Functionalization of P4 by Trapping Anionic [Cp*Fe(CO)2(η1‐P4)]− with Lewis Acids

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Published in 2017 at "ChemistryOpen"

DOI: 10.1002/open.201700027

Abstract: Abstract The development of selective functionalization strategies of white phosphorus (P4) is important to avoid the current chlorinated intermediates. The use of transition metals (TMs) could lead to catalytic procedures, but these are severely hampered… read more here.

Keywords: metalate mediated; mediated functionalization; lewis acids; functionalization trapping ... See more keywords
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Preparation of nanocellulose by hydrolysis catalysedusing salts with different Fe valency

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Published in 2020 at "Journal of Nanoparticle Research"

DOI: 10.1007/s11051-020-04928-1

Abstract: The production of cellulose nanocrystals (CNCs) from vegetable fibres and residues has been intensely investigated due to the properties of high crystallinity and specific surface area of these nanofillers. The most common method of obtaining… read more here.

Keywords: hydrolysis; nanocellulose hydrolysis; preparation nanocellulose; lewis acids ... See more keywords
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The effects of mild Lewis acids-catalyzed ethanol pretreatment on the structural variations of lignin and cellulose conversion in balsa wood.

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Published in 2021 at "International journal of biological macromolecules"

DOI: 10.1016/j.ijbiomac.2021.05.091

Abstract: Ethanol organosolv pretreatment is a green and effective deconstruction process for main components in lignocellulose biomass. Herein, balsa wood was firstly subjected to a modified ethanol/water solution (EWS) pretreatment with different Lewis acids catalysts (AlCl3,… read more here.

Keywords: catalyzed pretreatment; mild lewis; balsa wood; lewis acids ... See more keywords
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Lewis Acids and Electron-Withdrawing Ligands Accelerate CO Coordination to Dinuclear CuI Compounds.

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Published in 2023 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.3c01003

Abstract: A series of dinuclear molecular copper complexes were prepared and used to model the binding and Lewis acid stabilization of CO in heterogeneous copper CO2 reduction electrocatalysts. Experimental studies (including measurement of rate and equilibrium… read more here.

Keywords: electron withdrawing; lewis acids; withdrawing ligands; coordination ... See more keywords
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Effect of Lewis Acids on the Structure and Reactivity of a Mononuclear Hydroxomanganese(III) Complex.

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Published in 2020 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.9b02980

Abstract: The addition of Sc(OTf)3 and Al(OTf)3 to the mononuclear MnIII-hydroxo complex [MnIII(OH)(dpaq)]+ (1) gives rise to new intermediates with spectroscopic properties and chemical reactivity distinct from those of [MnIII(OH)(dpaq)]+. The electronic absorption spectra of [MnIII(OH)(dpaq)]+… read more here.

Keywords: sciii aliii; dpaq; effect lewis; mniii ... See more keywords
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Synthesis of Linear Poly(oxazolidin-2-one)s by Cooperative Catalysis Based on N-Heterocyclic Carbenes and Simple Lewis Acids

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Published in 2019 at "Macromolecules"

DOI: 10.1021/acs.macromol.8b02403

Abstract: The synthesis of isocyanurate-free, linear poly(oxazolidin-2-one)s starting from diepoxides and aromatic as well as aliphatic diisocyanates is reported. N-Heterocyclic carbenes (NHCs), liberated in situ from thermally labile CO2 adducts, in combination with Lewis acids of… read more here.

Keywords: heterocyclic carbenes; oxazolidin one; synthesis; lewis acids ... See more keywords
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Fluoride complexation by bidentate silicon Lewis acids.

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Published in 2017 at "Dalton transactions"

DOI: 10.1039/c6dt04608h

Abstract: Diethynyldiphenylsilane (1) and divinyldiphenylsilane (2) were functionalized by hydrosilylation reactions with HSiMe2Cl, HSiMeCl2 and HSiCl3. Fluorination of the resulting compounds generates bidentate open-chain Lewis acids of increasing acidity. All semi-flexible [Ph2Si(CH[double bond, length as m-dash]CHSiFnMe3-n)2… read more here.

Keywords: complexation bidentate; spectroscopy; lewis acids; bidentate ... See more keywords
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Synthesis of bi- and tetradentate poly-Lewis acids by hydroalumination of poly-alkynyl-anthracene derivatives.

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Published in 2022 at "Dalton transactions"

DOI: 10.1039/d2dt02118h

Abstract: Photo-dimers of 1,5-diethynylanthracene and 1,5-bis[(trimethylsilyl)ethynyl]anthracene, obtained by UV radiation of the monomers, were treated with the bulky aluminium hydride [(SiMe3)2HC]2AlH in hydroalumination reactions. Hydroalumination of the tetraethynyl-substituted anthracene photo-dimers (syn and anti) led to fourfold… read more here.

Keywords: poly lewis; lewis acids; hydroalumination; poly ... See more keywords