A Lewis-Acid Monopolar Gate Dielectric for All-Inkjet-Printed Highly Bias-Stress Stable Organic Transistors
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DOI: 10.1002/aelm.201700029
Abstract: A Lewis-acid monopolar polymer with both hydrophobicity and lipophilicity is used as the gate dielectric for all-inkjet-printed organic thin-film transistors. The hydrophobicity of this polymer prevents water molecules from migrating and being trapped in the… read more here.
Keywords: gate dielectric; inkjet printed; acid monopolar; lewis acid ... See more keywords
Catalytic Oxidation of Alkynes into 1,2‐Diketone Derivatives by Using a PdII/Lewis‐Acid Catalyst
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DOI: 10.1002/ajoc.201700556
Abstract: A novel synthetic method for alkyne oxidation by Pd(II)/LA (LA: Lewis acid) catalyst is described, which gives an efficient access to 1,2-diketones using dimethyl sulfoxide (DMSO) as the oxidant. Under the optimized reaction conditions, this… read more here.
Keywords: diketone derivatives; lewis acid; oxidation; acid catalyst ... See more keywords
Incorporating Lanthanum into Mesoporous Silica Foam Enhances Enzyme Immobilization and the Activity of Penicillin G Acylase Due to Lewis Acid‐Base Interactions
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DOI: 10.1002/cbic.201900753
Abstract: Penicillin G acylase (PGA) has been immobilized on a lanthanum‐incorporated mesostructured cellular foam (La‐MCF) support by using the interaction between the strong Lewis acid sites on the surface of La‐MCF and the free amino groups… read more here.
Keywords: pga mcf; penicillin acylase; lewis acid; activity ... See more keywords
Influence of Metal Doping on the Lewis Acid Catalyzed Production of Butadiene from Ethanol Studied by using Modulated Operando Diffuse Reflectance Infrared Fourier Transform Spectroscopy and Mass Spectrometry
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DOI: 10.1002/cctc.201700698
Abstract: As a result of the increasing gap between the supply and demand of butadiene, the catalytic coupling of ethanol has regained the attention of the scientific and industrial community as an “on‐purpose” production route to… read more here.
Keywords: lewis acid; butadiene; operando diffuse; spectroscopy ... See more keywords
Nickel‐Catalyzed Hydrophosphonylation and Hydrogenation of Aromatic Nitriles Assisted by Lewis Acid
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DOI: 10.1002/cctc.201801989
Abstract: In this paper, we describe the catalytic hydrophosphonylation of several aromatic nitriles used to synthesize α‐aminophosphonates (α‐APs) using commercially available trialkyl phosphites (P(OR)3, R=Et, iPr, Bu,) and simple and inexpensive nickel chloride (NiCl2.6H2O) as the… read more here.
Keywords: aromatic nitriles; lewis acid; hydrophosphonylation hydrogenation; catalyzed hydrophosphonylation ... See more keywords
Eco‐Mn Ecocatalysts: Toolbox for Sustainable and Green Lewis Acid Catalysis and Oxidation Reactions
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DOI: 10.1002/cctc.201901845
Abstract: Phytoextraction is one of the most promising phytotechnologies used to restore natural environments degraded by mining activities. In New Caledonia, a few plant species, which belong to the Grevillea genus, have the ability to extract… read more here.
Keywords: lewis acid; acid catalysis; ecocatalysts toolbox; eco ecocatalysts ... See more keywords
Lewis Acid Catalyzed [3+3] Annulation of Donor–Acceptor Cyclopropanes with γ-Hydroxyenones: Access to Highly Functionalized Tetrahydropyrans
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DOI: 10.1002/ejoc.201601305
Abstract: Donor–acceptor cyclopropanes were engaged in a [3+3]-annulation reaction with γ-hydroxyenones. Sc(OTf)3 was found to be the best catalyst, and 2,4,4,5-tetrasubstituted tetrahydropyran products were obtained in good yields under mild reaction conditions. The generality of the… read more here.
Keywords: annulation; acceptor cyclopropanes; lewis acid; donor acceptor ... See more keywords
Simultaneous Generation and Subsequent Cycloaddition of ortho‐Quinonemethides and Cyclic Enecarbamates Promoted by a Gold/Lewis Acid Catalytic System
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DOI: 10.1002/ejoc.201800679
Abstract: A new catalytic reaction to synthesize structurally complex hexahydrochromeno[2,3-b]pyrrole derivatives from simple 3butynamine and 2-(hydroxymethyl)phenol derivatives is described. The process is promoted by a dual catalytic system formed by a gold complex and a Lewis… read more here.
Keywords: simultaneous generation; lewis acid; cycloaddition; catalytic system ... See more keywords
Rational Optimization of Lewis-Acid Catalysts for the Direct Amination of Alcohols, Part 1 - Activity Descriptors for Metal Triflates and Triflimides
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DOI: 10.1002/ejoc.202000229
Abstract: Herein we report a comparison of Lewis acidity indicators (affinity scales, electronegativity, Fukui functions, global electrophilicity index) with a new in silico Beckett-Childs descriptor based on the build-up of partial charge, computed by DFT, on… read more here.
Keywords: lewis acid; rational optimization; acid catalysts; optimization lewis ... See more keywords
A computational investigation of the selectivity and mechanism of the Lewis acid catalyzed oxa‐Diels–Alder cycloaddition of substituted diene with benzaldehyde
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Computational Chemistry"
DOI: 10.1002/jcc.26547
Abstract: The selectivity and the mechanism of the uncatalyzed and AlCl3 catalyzed hetero‐Diels–Alder reaction (HDR) between ([E]‐4‐methylpenta‐2,4‐dienyloxy)(tert‐butyl)dimethylsilane 1 and benzaldehyde 2 have been studied using density functional theory at the MPWB1K/6‐31G(d) level of theory. The uncatalyzed… read more here.
Keywords: lewis acid; diels alder; mechanism; diene benzaldehyde ... See more keywords
Lewis acid stabilized group 13–15 element analogs of ethylene
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DOI: 10.1002/jcc.26867
Abstract: Stabilization of hydrogen‐substituted group 13–15 compounds H2EE′H2 (E = B, Al, Ga; E′ = P, As, Sb) by Lewis acids is considered at B3LYP/def2‐TZVP, B3LYP‐D3/def2‐TZVP and M06‐2X/def2‐TZVP levels of theory. It is shown, that for… read more here.
Keywords: group element; stabilized group; def2 tzvp; acid stabilized ... See more keywords