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Showing 1 to 16 of 16 for “"2-naphthol"”.
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Cyanoethylation of 2-Naphthol. Influence of Solvent and Catalyst on the Course of Reaction
… the catalyst on the course of the reaction of 2-naphthol with acrylonitrile; | (2) to determine whether a relationship between reaction conditions and product distribution could be established.
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Reaction of an Ambident Anion. Effect of Solvent and Catalyst on the Cyanoethylation of 2-Naphthol
The cyanoethylation of the ambident anion, 2-naphthoxide, is known to proceed either by carbon- or oxygen-alkylation, depending upon reaction conditions. Recently a study was made on the effect of solvent on the course of the reaction. | The purpose of the present investigation was to study this …
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Spectroscopic and thermodynamic studies of supercritical fluid solutions containing a cosolvent
… to study structure-specific probe molecules (2-naphthol, 5-cyano-2-naphthol, and 7-azaindole) in the supercritical fluids carbon dioxide, ethane, ethylene, and fluoroform, with water, methanol, and ethanol as cosolvents. In liquid solutions, these probes exhibit well characterized spectral …
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A STUDY OF ORGANOGELS AND THEIR SOLUTE INTERACTIONS
… solute molecules (substituted phenols, anilines, naphthols) with the organogels were found to be in the range of 1.3 to 500. These partition coefficients are roughly 40 times less relative to the partitioning of the same solutes to AOT reverse micelles in solution. The AOT organogels were found to …
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Synthetic Routes to 3-Fold Symmetric Tridentate Oxygen Donor Ligands
… 17, was synthesized from (±)1,1′-bi-2-naphthol. A one-pot synthesis for the rac-binaphthyl phosphite derivative was developed with an increased yield from the previously published synthesis. The racemic version of the ligand was characterized by NMR and mass spectroscopy. The chiral …
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Gas-phase Ion Chemistry of Hydroxy and Amino-substituted Interstellar Polycyclic Aromatic Hydrocarbons and Protonated Polycyclic Aromatic Hydrocarbons
… ion structure. The ten molecules studied were: 1-naphthol, 2-naphthol, 1-naphthylamine, 2-naphthylamine, 1-aminoanthracene, 2-aminoanthracene, 1-phenanthrol, 9-phenanthrol, 1-hydroxypyrene and 1-aminopyrene. Since it is believed that larger PAHs, on the order of more than 50 carbon atoms, populate …
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A Study of the Interactions Involved in the Direct Liquid Chromatographic Resolution of Racemates
… are proposed for the resolution of 1,1'-bi-2-naphthol (BBN) and 5-arylhydantoins as their analogs upon a CSP prepared from N-3,5-dinitrobenzoylphenylglycine. The models allow assignment of the configuration of each enantiomer based upon elution order. However, care must be excersized when the …
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Total synthesis of (S)-4-hydroxy-[a]-Lapachone
… The commercially available compound 2-acetyl-1-naphthol was used as the starting material. The synthesis involved methylation, followed by Baeyer-Villiger oxidation, and hydrolysis of the acetate to give 1-methoxy-2-naphthol. After protecting of the hydroxyl group, t-BuLi was used to form …
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Electrically Controlled Formation and Release of Admicelles for Solid Phase Extraction
… is the preconcentration of a test probe, 2-naphthol, using electrical control of the formation and release of dodecyl sulfate on planar gold, gold coated stainless steel, and a porous stainless steel frit, using impedance spectroscopy to observe the layer formation with various surfactant …
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Liquid collection efficiencies after supercritical fluid extraction
… naphthalene, <i>n</i>-decanoic acid, 2-naphthol, and <i>n</i>-tetracosane was spiked onto sand and extracted with supercritical carbon dioxide to evaluate the collection efficiency of various solvents and solvent mixtures. Nine single collection solvents and four mixed collection solvent …
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A pH Switchable Responsive Surface for the Trapping And Release of a Hydrophobic Substance
… released using this unique switching approach. 2-naphthol, for example, is hydrophobic and thus was trapped at lower pHs (pH 4) (hydrophobic surface) and released at higher pHs (pH 10) (hydrophilic surface) on this responsive surface</p>
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Towards polyethylene-based materials with non-alternatively incorporated carbon monoxide monomer
… dimethyl) with either a BINOL (1,1′-bi-2-naphthol)-based phosphine diphenol (P,O) ligand or an analogous ligand which features an ethyl ether in place of the nonortho phenol. All complexes were active for ethylene homopolymerization (featuring activity up to 81.3 × 105 g polymer × mol Ni–1 …
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HARNESSING NATURE’S MACHINERY: CHARACTERIZATION OF BACTERIAL BIOSYNTHETIC ENZYMES FOR CHALLENGES IN ORGANIC SYNTHESIS
… enantioenriched biaryl compounds like 1,1'-bi-2-naphthol (BINOL). Finally, in Chapter 6, we report the first in vitro characterization of Mas10, a putative amide synthase proposed to forge the 13-membered macrolactam in the biosynthesis of the microansamycins. Here, we demonstrate the selectivity …
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Hydroxypropylmethylcellulose: A New Matrix for Solid-Surface Room-Temperature Phosphorimetry
… acenaphthene, phenanthrene, 2-naphthoic acid, 2-naphthol, salicylic acid, and triphenylene.Filter paper and HPMC substrates are inherently anisotropic, non-heterogeneous media. Since this deficiency cannot be addressed experimentally, a robust statistical method is examined for the detection of …
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Mn(salen)- und Fe(porph)-katalysierte enantioselektive Epoxidierungen
… III lieferen. 1,1-Dimethyl-1,2-dihydro-2-naphthol (IIc) ist hierbei eine Ausnahme, da die CH-Oxidation dieses Substrats eine beachtliche Nebenreaktion darstellt. Der Hauptunterschied zwischen den Fe- und Mn-Katalysatoren liegt in der Enantioselektivität: Während mit dem Fe(porph*)-Komplex …
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Cellulolytic enzyme systems of Myrothecium verrucaria
… cellulose dextrins, cellobiose, 6-bromo-2-naphthol-β-D-glucopyranoside, and 4-0-β-D-glucopyranosyl-D-sorbitol. The results not o~ indicated a multienzymatic nature of cellulase but also that the components of the cellulase system were specific for a particular range of chain lengths of …