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Showing 1 to 20 of 20 for “"anisole"”.
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Catalyst preparation and evaluation for synthesis of anisole by phenol aklylation
Includes bibliographical references.
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The Partial Pressure of Hydrogen Chloride Above its Solutions in BB Dichloroethyl Ether and Anisole and the Calculation of the Heat and Entropy of Solution
Early attempts to explain phenomena associated with some solutions, such as electrical conductance, were handicaped by the overemphasis of the Arrhenius theory as well as by a lack of data concerning non-aqueous solutions. However the Debye-Huckel theory of interionic attraction inspired such …
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Friedel-crafts acylation reactions using heterogeneous catalysts stimulated by microwave radiation
… activities for the acylation of toluene and anisole were studied there was found to be a correlation between the Brønsted acidity and the catalytic activity. The reactivity of the catalysts is dependant upon both the concentration and the chain length of the carboxylic acid. An optimum chain …
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Acid catalysed alkylation of diphenyl ether with methanol over shape-selective zeolites
… primarily o- and p-cresol, with significant anisole formation at lower temperatures (≈ 200°C). m-Cresol is, however, formed with significant selectivity over strongly acidic catalysts or at higher temperatures (typically 300°C and more). To date, only one industrial process is known which is …
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Advances in synthetic, structural and reaction chemistry of zinc and zincate complexes containing alkyl and/or amido ligands
… in situ sidereactions with toluene, ferrocene or anisole generated [{(TMEDA)Na[OC(NC4H8)CHPh]}2], 14, [(TMEDA)(Boc-NC4H8)Na{(η2-C5H4)Fe(C5H5)}Zn(tBu)2], 16 and [(TMEDA)Na(μ-TMP)(μ-C6H4OMe)Zn(tBu)], 17, respectively. Incorporating multifunctional 2,2'-dipyridylamide (dpa) into a bimetallic system …
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Liquid Phase Carbon-Thirteen Dynamic Nuclear Polarization Study of Monosubstituted Aromatic Compounds
… mono-substituted aromatic compounds, such as, anisole, nitrobenzene and halobenzenes. These substitute groups covered a wide range of electronic effects from strong electron donating groups to strong electron withdrawing groups. Hammett linear free energy relationship was used to quantitatively …
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Fabrication and Characterization of Horizontally Aligned Carbon Nanotube Thermoplastic Bulk Nanocomposite Laminates
… fraction v_f > 45 vol.%, using a 9 wt.% PMMA in anisole solution. Through characterization via X-ray microcomputed tomography (µCT), scanning electron micrography (SEM), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, and polarized Raman spectroscopy, HA-CNT/PMMA …
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Carbon-Carbon Bond Formation Via o-Lithiointermediates
… in hydrocarbon solvents at 60°C, o-lithiation of anisole and dimethylaniline can be effected in >95% yields. The first step in the DoM process involves preparation of solid samples of these o-lithiointermediates. Completing the sequence, the second step concerns formation of a new arene-derivative …
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Synthese und Testung nichtpeptidischer Cystein-Protease-Inhibitoren - Etacrynsäure als Leitstruktur
… in entsprechend substituierte Anisole eingeführt. Diese wurden in einer unmittelbar anschließenden Reaktion zu acylierten Phenolen gespalten, die in einem Folgeschritt mit Bromessigsäureethylester zu acylierten Phenoxyessigsäureethylestern verethert wurden. In diese wurde in …
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Self-Assembled Monolayers As Models For Silica
… The reaction of t-butyllithium with 4-bromoanisole followed by reaction with 1-12-dibromododecane affords a mixture of 4-bromoanisole, 1,12-dibromododecane ,and 4-(12-bromododecyl)-anisole (6). Silica gel chromatography resulted in an inseperable mixture of 4-bromoanisole and (6). Reaction …
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Preparation and Properties of Azetidine-2-Ones
… into the aromatic ring of the solvent. Anisole has also been shown to undergo this reaction. 4,3,3,4-Tetraphenylazetidine-2-one also undergoes rearrangement in the presence of boron trifluoride etherate in toluene to yield the 2,3-diphenylindene- 4-one rather than the propionamide by …
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The Dynamics of Phase Separation and Structure Formation in Phase Inversion
… acrylate-co-acrylic acid) and anisole show that domain growth rates increase with increasing quench depth and that crystallization immediately arrests domain growth and locks-in nonequilibrium structures. Light scattering measurements made on ternary solutions consisting of an …
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All-Inkjet-Printed Low-Voltage Organic Thin-Film Transistors
… as the semiconductor, and anisole as the solvent for semiconductor inks. Based on the investigation of different materials, the characteristics and parameters of all-inkjet-printed OTFTs are optimised, demonstrating an ultra-steep subthreshold of 60.2 mV/decade approaching …
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Synthesis and Polymerization of Substituted Stilbenes with Maleic Anhydride for Membrane Solubilization and Protein Extraction
… make laboratory scale-up difficult. The use of anisole as a polymerization solvent mitigates gelation during poly((E)-4-methylstilbene-alt-maleic anhydride) synthesis. Additionally, unsymmetrical dimethyl-substituted stilbenes and monosubstituted stilbenes ((E)-4-tert-butylstilbene, …
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Contact-free Electrical Characterisation of Novel Materials Using Terahertz Spectroscopy
… was investigated. Amongst chlorobenzene and anisole, toluene was identified to produce the champion optoelectronic properties ranging from grain size, charge carrier mobility, photoconductivity, lower Sn<sup>4+</sup> surface elemental composition to power conversion efficiency. The research …
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Zinc oxide nanowire field effect transistors for sensor applications
… various VOCs was observed; with a 25 ppm level Anisole detection being the lowest concentration. Additionally, using 100 nm device, detection of 10 ppm NO$_2$ was achieved at room temperature. The sensing response towards NO$_2$ was found to be increased with UV illumination and sensor …
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Superelectrophiles and their chemistry
… be an effective reagent for the formylation of anisole under mild conditions. The synthesis and isolation of these superelectrophile disalts based on the 2-DMAP unit shows that highly reactive superelectrophiles can be obtained using standard laboratory conditions, which considerably widens the …
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Fracture-induced mechanophore activation and solvent healing in poly(methyl methacrylate)
… microcapsules. Solvent microcapsules with a PMMA-anisole liquid core are prepared and embedded within a linear PMMA matrix. Specimens of the microcapsule-loaded material are then fabricated for Double Cleavage Drilled Compression (DCDC) fracture testing. The DCDC specimens, containing increasing …
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2,4,6-Tris(isopropylamino)-1,3,5-trinitrobenzene : Probing the Impact of Crystal Packing Forces in the Dimorphs and the Cocrystals–Experimental and Theoretical Study
… the evaporation of the solvent, except that of anisole which change to structure 1b. Detailed calculations of the interaction energies between the different molecules in each structure have been done to understand the factors affecting the crystal packing forces. The following results have been …
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Rentgenowska analiza strukturalna roztworów pochodnych anizolu i toluenu w 1,4-dimetylobenzenie
W niniejszej pracy doktorskiej rozwiązano następujące zagadnienia badawcze: 1. Wyznaczono konformacje molekuł badanych cieczy metodą redukcji Mozzi – Warrena. 2. Zbadano zjawisko izomerii położeniowej w chloropochodnych anizolu i ich roztworach. 3. Dokonano analizy porównawczej stopnia wewnętrznego …