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Showing 1 to 20 of 28 for “"Benzotriazole"”.
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FTIR-ATR Characterization of Hydrogel, Polymer Films, Protein Immobilization and Benzotriazole Adsorption on Copper Surface
… in the integrated chips manufacturing industry. Benzotriazole is one of the constituents of this CMP slurry used as corrosion inhibitor for Cu. Benzotriazole (C6H5N3) is a nitrogen heterocyclic derivative having three nitrogen atoms, each with an unshared pair of electrons, forming five-membered …
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Formation of Pyrroloindolines and Alkylation of N-heterocycles With Trichloroacetimidates and Synthesis of Quinoline Based Small Molecule Inhibitors of Ghrelin O-acyltransferase (goat)
… alkylations with trichloroacetimidates and benzotriazole substrates are also under investigation. Base promoted benzotriazole alkylation yields predominantly the N1-alkylation product, maintaining the aromaticity of the fused ring moiety. The N2-alkylation of benzotriazole which results in …
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COPPER-MEDIATED N1-ARYLATION OF BENZOTRIAZOLES
<p>Benzotriazoles are group of bicyclic heterocyclic compounds that contain three nitrogen atoms fused to a benzene ring. Along with their derivatives, they possess a wide range of properties. They are used in medical field, as they exhibit such properties as …
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Conception et synthèse d'une nouvelle famille d'hétérocycles tétrazépiniques: les alkyl-3, benzotétrozépines-1,2,3,5-one-(5H)-4
… évolue lentement vers le N-Méthyl-N-carbamoyl-benzotriazole. La diazotation des urées en acide dilué a donné lieu à la formation de N-alkyl-N-carbomoylbenzotriazole (ACB). Leur diazotation dans l'acide chlorhydrique concentré (37%) aboutit à la synthèse des deux isomères ABT et ACT. Cette …
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Copper Surface Chemistry Relevant to Chemical Mechanical Planarization (Cmp)
… the effect of structure of corrosion inhibitors benzotriazole and 1,2,4-triazole (TAZ) on copper removal rate during CMP. Removal rates were higher for solutions containing TAZ than solutions containing BTA. The corrosion inhibitor films were characterized using AFM, cyclic voltammetry, impedance …
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Synthesis and inclusion studies of stable allicin mimics as novel antimicrobial agents
… a thiol to a sulfenylating agent by 1-chlorobenzotriazole (BtCl) in the presence of 1,2,3-benzotriazole (BtH). Addition of a second thiol affords unsymmetrical disulfides in excellent yields. In addition to being a one-pot methodology, the approach offers attractive environmentally friendly …
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[4 + 1] annulation reactions of (trialkylsilyl)ketenes : synthesis of substituted indanones and cyclopentenones
… metallation of readily available N- substituted benzotriazole derivatives) with (TAS)vinylketenes generates dienolate intermediates which cyclize to form cyclopentenones. Most cases of the annulation proceed with a high level of diastereoselectivity, and deliver highly substituted and …
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Synthesis of Novel 5-Aryl 2’-Deoxyuridine and 2’-Deoxycytidine Analogues
… 5-PdU at the C4 position was performed with benzotriazole-1-yl-oxy-tris-(dimethylamino)-phosphonium hexafluorophosphate (BOP, a peptide-coupling agent) and a base (cesium carbonate) to activate the amide group of the uridine nucleobase for subsequent displacement with a variety of amines. …
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New CO₂ chemistry for fine chemical synthesis
… methodology was developed for synthesising a benzotriazole (Bt) urea directly from CO2 in a two-step, one-pot synthesis. The procedure involves trapping CO2 with a primary or secondary amine in the presence of DBU, and reaction of the resultant carbamate salt with triphenylphosphine and …
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An Exploratory Study of the Effects of BIS-Substituted Triazolium Bromide Salts on the Proliferation of WI-38 Lung Cells and H-1299 Lung Cancer Cells
… the biological activity of the salts, Dibenzyl-benzotriazole (BT 1-1), Bis(2-Naph) Benzotriazole (BT 2-2), 2-Naph QuinBenzotriazole (BT 2-3), Bis-Naphthylacylbenzotriazole (BT 4-4), BisNaphAcyl - 1,2,3-triazole (T3 4-4) and Bis-3-phenylbenzyl-1,2,3- triazole (T3 5-5), on normal lung cells …
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CMOS SINGLE-PHOTON AVALANCHE DIODES AND MICROMACHINED OPTICAL FILTERS FOR INTEGRATED FLUORESCENCE SENSING
… (PGSPAD), for on-chip photon counting, and the benzotriazole (BTA)-doped thin-film polymer filter, for on-chip ultraviolet light rejection. Experimental results revealed that the PGSPAD front-end, fabricated in a 0.5 μm standard mixed-signal CMOS process, had the capability of counting …
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1,2,3-triazoles as X-factor in gold(I) activation of challenging C-C triple bond transformations
… of traditionally challenging compounds. The benzotriazole modified gold(I) complex showed high reactivity toward propargyl ester/vinyl ether. Through a simple 3,3-rearrangement, allene derivatives, which were usually considered as intermediate in the gold(I) chemistry, were isolated as a …
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In Situ Studies of Corrosion and Electrodeposition Using Atomic Force Microscopy
… current densities and 0, 10, and 100 $\mu$M benzotriazole (BTA) was investigated. With no BTA, deposition followed the classical surface diffusion model and copper selectively grew at step sites. A surface diffusivity of 10$\sp{-6}$ cm$\sp2$/s was estimated from shape evolution plots. With …
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In-situ study of the influence of additives on the growth behavior of copper electrodeposits on copper single crystal
… several combinations of chloride and additives benzotriazole (BTA) and 3-mercapto propane sulfonic acid (MPSA) under galvanostatic pulse-current conditions. The electrodeposition process was followed using in-situ atomic force microscopy (AFM). AFM images were quantitatively analyzed by …
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Slurry Chemistry Effects On Copper Chemical Mechanical Planarization
… chemical additives such as inhibitors (e.g. benzotriazole) and complexing agents (e.g. ammonia) are added to the copper slurry in order to modify the oxide layer. That the removal rate of the thin surface layer is greater at the highest regions of the wafer surface than at the lowest regions …
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Innovative Deposition of Corrosion Inhibitors by Abrasive Blasting
… cannot be directly mixed with garnet, such as benzotriazole (BTAH). After blasting, BTAH was released from deposited capsules upon contact with a solvent and spread to cover the steel surface, as required for corrosion protection. The extent and strength of adsorption of BTAH from toluene onto …
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An investigation into vibrational dynamics in organic semiconductors
… (IDT-BT), diketopyrrolopyrrole-benzotriazole (DPP-BTZ) and naphtalene-bithiophene (NDI-T2) at pressures up to 3.9 GPa. It is shown that Raman spectra of pBTTT and NDI-T2 demonstrate dependence of mode intensities on hydrostatic pressure, whereas spectra of IDT-BT and DPP-BTZ …
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Flexible access to an array of enantiomerically-enriched oxabisipidines and their use as chiral ligands in asymmetric synthesis
… aldehyde substrates, whereas the employment of a benzotriazole additive was required for enolisable alkyl aldehyde substrates. In addition to the broad range of bicyclic oxabispidines prepared under the conditions described, a more synthetically challenging and structurally complex tricyclic …
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The Impact of Morphology and Composition on the Resistivity and Oxidation Resistance of Metal Nanostructure Films
… zinc, tin, and indium and electrolessly plating benzotriazole (BTAH), nickel, silver, gold, and platinum. While all of the shells lessened or prevented oxidation both in dry and humid conditions, it was found that a thin layer of silver confers identical optoelectronic properties to the Cu NWs as …
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