Category: 1120-02-1

Synthetic Route of 1120-02-1, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1120-02-1, Name is OctMAB, molecular formula is C21H46BrN. In a Article，once mentioned of 1120-02-1

Dynamin is a GTPase enzyme involved in membrane constriction and fission during endocytosis. Phospholipid binding via its pleck-strin homology domain maximally stimulates dynamin activity. We developed a series of surface-active small-molecule inhibitors, such as myristyl trimethyl ammonium bromide (MiTMAB) and octadecyltrimethyl ammonium bromide (OcTMAB), and we now show MiTMAB targets the dynamin-phospholipid interaction. MiTMAB inhibited dynamin GTPase activity, with a Ki of 940 ± 25 nM. It potently inhibited receptor-mediated endocytosis (RME) of transferrin or epidermal growth factor (EGF) in a range of cells without blocking EGF binding, receptor number, or autophosphorylation. RME inhibition was rapidly reversed after washout. The rank order of potency for a variety of MiTMAB analogs on RME matched the rank order for dynamin inhibition, suggesting dynamin recruitment to the membrane is a primary cellular target. MiTMAB also inhibited synaptic vesicle endocytosis in rat brain nerve terminals (synaptosomes) without inducing depolarization or morphological defects. Therefore, the drug rapidly and reversibly blocks multiple forms of endocytosis with no acute cellular damage. The unique mechanism of action of MiTMAB provides an important tool to better understand dynamin-mediated membrane trafficking events in a variety of cells. Copyright

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 1120-02-1, molcular formula is C21H46BrN, introducing its new discovery. Safety of OctMAB

Heavy organic pollutants such as pesticides and pharmaceuticals are found in wastewater and are difficult to remove by microporous adsorbents because of their large size. Mesoporous organosilicas as potential adsorbents for removal of heavy organic pollutants from aqueous phase are investigated. Propylsulfonic acid-functionalized mesoporous silica (SBA-15-SO3H) and propylsulfonic acid-functionalized periodic mesoporous benzene-silica (Ph-PMO-SO3H) are prepared by co-condensation method. Textural and structural characterizations are conducted by X-ray diffraction, N2 physisorption, solid state NMR spectroscopy, elemental analysis and confirmed the structural integrity of the materials. Material adsorption behaviors are studied in pesticide, mesosulfuron methyl (MM), removal from aqueous phase. For all the materials, adsorption kinetics are well described by a pseudo-second order model indicating the chemisorption of the MM molecules via acid-basic interaction of the neutral form. Sorption isotherms are S-shape isotherms and can be well fitted by the Freundlich model. Ph-PMO-SO3H exhibits higher sorption rate (8.95 mg g-1 h-1) and better sorption capacity (9.70 mg g-1) than the mesoporous silica SBA-15-SO3H (4.16 mg g-1 h-1, 9.4 mg g-1). Furthermore, Ph-PMO-SO3H has also the best MM abatement rates in aqueous phase up to 95% for initial concentrations ranging from 4 to 10 ppm than microporous acidic zeolite (HFAU) (?70%) and mesoporous silica SBA-15-SO3H (?70%). The phenyl groups in sulfonic PMO material seem to enhance organic pollutant adsorption capacity either by reducing wall hydrophilicity or by favoring the interaction with MM phenyl rings.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthetic Route of 1120-02-1, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1120-02-1, Name is OctMAB, molecular formula is C21H46BrN. In a Article，once mentioned of 1120-02-1

In aqueous solutions containing isopropanol (IPA), within the range of 0-100 g/L, the micellization behaviors of binary surfactant mixtures of amphoteric sodium 3-(N-dodecyl ethylenediamino)-2-hydropropyl sulfonate (C12AS) and cationic octadecyltrimethyl ammonium bromide (OTAB) were investigated by three techniques including tensiometry, conductometry and isothermal titration microcalorimetry (ITC). Based on extant theories and models (such as, the regular solution theory, the pseudophase separation model, the Rubingh’s model, etc.), the effects of IPA on the molar fraction of components in mixed micelles, the interaction parameters between the two surfactants, and associated thermodynamic parameters have been discussed. The addition of cosolvent IPA results in a change in the conformation of C12AS, as well as affecting the interaction behavior between the two surfactants and a decrease in the hydrophobic effect. The synergistic effects between the two surfactants varies partly with the concentration of IPA. The observations can be used to explain the cause for the abnormal dependence of the molar fraction of components in mixed micelles and the interaction parameters on the concentration of the cosolvent IPA. Thermodynamic parameters further show the effect of IPA on the entropy-driven process of micellization.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Safety of OctMAB, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1120-02-1, Name is OctMAB, molecular formula is C21H46BrN. In a Patent, authors is ，once mentioned of 1120-02-1

The present invention concerns a SAPO-34 molecular sieve and method for preparing the same, whose chemical composition in the anhydrous state is expressed as: mDIPA·(Si x Al y P z )O 2 , wherein, DIPA is diisopropylamine existing in cages and pore channels of said molecular sieve, wherein m is the molar number of diisopropylamine per one mole of (SixAlyPz)O 2 , and m is from 0.03 to 0.25; x, y, z respectively represents the molar number of Si, Al, P, and x is from 0.01 to 0.30, and y is from 0.40 to 0.60, and z is from 0.25 to 0.49, and x + y + z =1. The SAPO-34 molecular sieve can be used as catalysts for acid-catalyzed reaction or oxygenate to olefins reaction.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Electric Literature of 1120-02-1, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1120-02-1, Name is OctMAB, molecular formula is C21H46BrN. In a Review，once mentioned of 1120-02-1

As one unique group of two-dimensional (2D) nanomaterials, 2D metal nanomaterials have drawn increasing attention owing to their intriguing physiochemical properties and broad range of promising applications. In this Review, we briefly introduce the general synthetic strategies applied to 2D metal nanomaterials, followed by describing in detail the various synthetic methods classified in two categories, i.e. bottom-up methods and top-down methods. After introducing the unique physical and chemical properties of 2D metal nanomaterials, the potential applications of 2D metal nanomaterials in catalysis, surface enhanced Raman scattering, sensing, bioimaging, solar cells, and photothermal therapy are discussed in detail. Finally, the challenges and opportunities in this promising research area are proposed.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Electric Literature of 1120-02-1, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1120-02-1, Name is OctMAB, molecular formula is C21H46BrN. In a Review，once mentioned of 1120-02-1

Selective oxidation has an important role in environmental and green chemistry (e.g., oxidative desulfurization of fuels and oxidative removal of mercury) as well as chemicals and intermediates chemistry to obtain high-value-added special products (e.g., organic sulfoxides and sulfones, aldehydes, ketones, carboxylic acids, epoxides, esters, and lactones). Due to their unique physical properties such as the nonvolatility, thermal stability, nonexplosion, high polarity, and temperature-dependent miscibility with water, ionic liquids (ILs) have attracted considerable attention as reaction solvents and media for selective oxidations and are considered as green alternatives to volatile organic solvents. Moreover, for easy separation and recyclable utilization, IL catalysts have attracted unprecedented attention as “biphasic catalyst” or “immobilized catalyst” by immobilizing metal- or nonmetal-containing ILs onto mineral or polymer supports to combine the unique properties of ILs (chemical and thermal stability, capacity for extraction of polar substrates and reaction products) with the extended surface of the supports. This review highlights the most recent outcomes on ILs in several important typical oxidation reactions. The contents are arranged in the series of oxidation of sulfides, oxidation of alcohols, epoxidation of alkenes, Baeyer-Villiger oxidation reaction, oxidation of alkanes, and oxidation of other compounds step by step involving ILs as solvents, catalysts, reagents, or their combinations.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Computed Properties of C21H46BrN, Which mentioned a new discovery about 1120-02-1

Racemic monobactam analogues 8a-8c, 8e-8g, 8n, 27, 44k-44m, 48c and 51d, carrying hydrogen or non-acylamino substituents in position 3, and 2-substituted thiazol-4-yl, 2-substituted thiazol-4-ylmethyl, 4-substituted yhiazol-2-ylmethyl, 2-benzyltetrazol-5-ylmethyl or 5-methoxyisoxazol-3-ylmethyl substituents in position 4 of the beta-lactam ring, as well as the reversed monobactam 35 were synthesised.None of the compounds synthesised exhibited any microbiological activities.Base catalyzed rearrangement of a 4-cyanomethylazetidin-2-one (39j) into a 6-aminopyridin-2(1H)-one (40) and acid catalyzed rearrangements, with elimination of the lactam nitrogen atoms, of two 4-(thiazol-2-ylmethyl)azetidin-2-ones (44a, 44b) into a thiazolopyridinone (47) were observed.

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Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Application of 1120-02-1, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1120-02-1, Name is OctMAB, molecular formula is C21H46BrN. In a Article，once mentioned of 1120-02-1

In the present work, we have investigated the effect of some counterions on the Krafft temperature (TK) and the micelle formation of octadecyltrimethylammonium bromide (OTAB) in aqueous solution. The results showed that the ions with more chaotropic nature increase the TK while those with a kosmotropic, hydrotropic and less chaotropic nature lower the TK of the surfactant. More chaotropic SCN? and I?, being weakly hydrated, form contact ion pairs with the octadecyltrimethylammonium ion and reduce the electrostatic repulsion between the surfactant molecules. As a result, these ions exhibit salting out behavior and raise the TK of the surfactant. On the other hand, less chaotropic Cl? and NO3 ?, kosmotropic SO4 2? and F? and hydrotropic benzoate and salicylate ions increase the solubility of the surfactant, with a consequent decrease in the TK. SO4 2?, F?, benzoate and salicylate cannot form contact ion pairs with the weakly hydrated cationic part of OTAB. Rather, being extensively hydrated and kosmotropic in nature, these ions do not show any tendency to shed their hydrated water molecules to form contact ion pairs with the weakly hydrated octadecyltrimethylammonium ion and therefore, stay apart. As a result, the TK of the surfactant decreases significantly in the presence of these ions. The critical micelle concentration (CMC) of the surfactant decreases significantly in the presence of these ions due to screening of the micelle surface charge by the added counterions. Consequently, the surfactant molecules attain better packing because of substantial reduction in the electrostatic repulsion between the charged head-groups, showing a significant decrease in the CMC.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthetic Route of 1120-02-1, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1120-02-1, Name is OctMAB, molecular formula is C21H46BrN. In a Article，once mentioned of 1120-02-1

The capacities of two Moroccan clays, one of them swelling and the other non-swelling, as sorbents of three ionisable pesticides: terbutryn (basic), dicamba (anionic) and paraquat (cationic) were studied. Sorption was studied on natural and modified clays with three quaternary alkyl ammonium cations of different long-chain, octadecyltrimethylammonium (ODTMA), octyltrimethylammonium (OTMA) and tetramethylammonium (TMA). Freundlich or Langmuir models were used to obtain sorption parameters. Sorption of terbutryn and dicamba by ODTMA-clays was always higher than by natural clays. Distribution coefficients (Kd) of these modified clays increased 55-128-fold (terbutryn), and 1.4-8.6-fold (dicamba) respect to the natural clays. In contrast, sorption of terbutryn by the TMA-clays and of dicamba by TMA- and OTMA-clays was lower than for natural clays. Sorption coefficients of paraquat by natural clays were similar or higher than those obtained with modified clays. In general, the sorption of herbicides was higher by swelling clay than by non-swelling clay. The results point out that the Moroccan clays studied may be used as sorbents of cationic pesticides in their natural form and of basic or even anionic herbicides when modified with long-chain organic cations in barrier technologies to enhance the immobilization of herbicides and to prevent the contamination of surface and ground water.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Electric Literature of 1120-02-1, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1120-02-1, Name is OctMAB, molecular formula is C21H46BrN. In a Article，once mentioned of 1120-02-1

The interaction of poly(methacrylic acid) (PMAA) brushes with oppositely charged surfactants has been studied as a function of the polymer brush graft density, the surfactant concentration, and the surfactant alkyl chain length at neutral pH. The changes in the degree of dissociation of the polyacid alpha and in the amount of surfactant uptake beta were determined from infrared and multiple-angle ellipsometry measurements, respectively. The brush shrinks already strongly at a surfactant concentration of around 10-5 mol L-1, despite that the surfactant uptake in this regime is still low. A strong surfactant uptake sets in only above a critical concentration, which is slightly below the critical micelle concentration (cmc) of the respective surfactant. A comparison of dissocation a and surfactant uptake beta reveals that the surfactant is not exclusively bound electrostatically by an exchange of the carboxylic acid protons for surfactant ions, but also through hydrophobic interactions. The influence of surfactant concentration, alkyl chain length, and graft density on the complexation behavior is studied.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI