Disclosed is an aromatic amine derivative represented by the general formula (1) or (2) below and having a diphenylamino group wherein a cycloalkyl group is bonded to a benzene ring. Also disclosed is an organic electroluminescent device wherein an organic thin film composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode, and at least one layer of the organic thin film contains the aromatic amine derivative by itself or as a component of a mixture. This organic electroluminescent device has long life and high luminous efficiency, and is capable of emitting blue light with high color purity. The aromatic amine derivative enables to realize such an organic electroluminescent device. (1) (2) (In the general formula (1), A,sub,1,/sub,-A,sub,4,/sub, respectively represent a hydrogen atom or the like, and a-d respectively represent an integer of 0-5. In this connection, at least one of a-d represents an integer of not less than 1, and in ...
To increase the reliability and success rate of drug discovery, efforts have been made to increase the C(sp3) fraction and avoid flat molecules. sp3-Rich enantiopure amines are most frequently encountered as chiral auxiliaries, synthetic intermediates for pharmaceutical agents and bioactive natural products. Streamlined construction of chiral aliphatic amines has long been regarded as a paramount challenge. Mainstream approaches, including hydrogenation of enamines and imines, C-H amination, and alkylation of imines, were applied for the synthesis of chiral amines with circumscribed skeleton structures; typically, the chiral carbon centre was adjacent to an auxiliary aryl or ester group. Herein, we report a mild and general nickel-catalysed asymmetric reductive hydroalkylation to effectively convert enamides and enecarbamates into drug-like α-branched chiral amines and derivatives. This reaction involves the regio- and stereoselective hydrometallation of an enamide or enecarbamate to generate a
TY - JOUR. T1 - Simultaneous aqueous chlorination of amine-containing pharmaceuticals. AU - Liu, Yu-Jung. AU - Liu, Hui-Sz. AU - Hu, Ching-Yao. AU - Lo, Shang-Lien. PY - 2019. Y1 - 2019. N2 - Amine-containing pharmaceuticals such as acetaminophen, diclofenac, and sulfamethoxazole are the most often detected pharmaceuticals in wastewater and other aquatic environments. Amine-containing pharmaceuticals can be effectively removed by chlorination. These drugs, however, may coexist in wastewater. Thus, they may compete with each other, and their chlorinated products may react with each other to form new products. In this study, competitive effects of the above three amine-containing pharmaceuticals by chlorination and their products were investigated. The priority of chlorination of these compounds was dependent upon the pH of the solution, due to the dissociation of the compounds and hypochlorite. It followed the order of sulfamethoxazole , diclofenac , acetaminophen in an acidic condition, the ...
Abstract. Multivalent metal salts, such as ferric chloride and sulfate, are active and versatile catalysts for the amidation of aliphatic fatty acids with long-chain aliphatic amines.. ...
Modified aliphatic amine Hardener KB-NF,Particularly suitable for winter and spring carbon fiber plastic, steel sticky toughness curing agent_OKCHEM
The pharmacological effects of A-4, a bis 4-methylpiperidine tertiary amine derivative of hemicholinium-3, were investigated. Systemic administration (i.p.) of this compound produced a dose-dependent reduction in acetylcholine content of several brain regions. A dose of 40 mg/kg of A-4 produced a 40% reduction in acetylcholine content in the corpus striatum and this reduction was maintained for over 4 hr. Increased choline content was found concurrent with the reduction in acetylcholine content. Reversal of the A-4-induced reductions in acetylcholine content was seen with eserine and oxotremorine but not with choline chloride. Acute treatment with A-4 appeared selective for cholinergic neurons as no significant changes were seen in norepinephrine or serotonin parameters of any of the brain regions assayed. Dopamine turnover was increased in the striatum. The neurochemical changes produced by A-4 were not seen with the bis 4-methylpiperidine quaternary amine, A-5, or hemicholinium-3 after ...
N,N-Substituted amine derivatives were designed by utilizing a bioisosterism strategy. Consequently, twenty-two compounds were synthesized and evaluated for their inhibitory activity against CETP. Structure-activity relationship (SAR) studies indicate that hydrophilic groups at the 2-position of the tetrazole and 3,5-bistrifluoromethyl groups on the benzene ring provide important contributions to the potency. Among these compounds, compound 17 exhibited excellent CETP inhibitory activity (IC50 = 0.38 ± 0.08 μM) in vitro. Furthermore, compound 17 was selected for an in vitro metabolic stability study.
TY - JOUR. T1 - Approaches towards the synthesis of fluoro(cyclo)alkylamines.. AU - Windhorst, A.D.. AU - Bechger, L.. AU - Visser, G.W.M.. AU - Menge, W.M.P.B.. AU - Leurs, R.. AU - Timmerman, H.. AU - Herscheid, J.D.M.. PY - 1996. Y1 - 1996. N2 - The synthesis of fluoro(cyclo)alkylamines 1-amino-6-fluorohexane (1), 1-amino-7-fluoroheptane (2), cis/trans-4-fluorocyclohexylamine (3a,b) and cis-4-fluoromethylcyclohexylamine (4) has been investigated for use as synthons for histamine receptor ligands for use in PET.. AB - The synthesis of fluoro(cyclo)alkylamines 1-amino-6-fluorohexane (1), 1-amino-7-fluoroheptane (2), cis/trans-4-fluorocyclohexylamine (3a,b) and cis-4-fluoromethylcyclohexylamine (4) has been investigated for use as synthons for histamine receptor ligands for use in PET.. U2 - 10.1016/S0022-1139(96)03457-4. DO - 10.1016/S0022-1139(96)03457-4. M3 - Article. VL - 80. SP - 35. EP - 40. JO - Journal of Fluorine Chemistry. JF - Journal of Fluorine Chemistry. SN - 0022-1139. ER - ...
TABLE-US-00002 TABLE 2 Insecticidal (Heteroarylalkyl)alkane Thio and Oxo Amine Derivatives Compound Characterization Melting Point (° C.) of Solids Molecular Formula Or Physical State 1-1 C33H36Cl2N6O4S2 OIL 1-2 C23H24Cl2N6O2S2 OIL 1-3 C27H40Cl2N6O2S2 OIL 1-4 C25H36Cl2N6O2S2 OIL 1-5 C25H32Cl2N6O2S2 OIL 1-6 C19H20Cl2N6O2S4 OIL 1-7 C21H32Cl2N6O2S4 OIL 1-8 C21H22Cl2N8O2S2 OIL 1-9 C17H18Cl2N4O2S2 GUM 1-10 C18H21ClN4O3S2 OIL 1-11 C11H15ClN4O2S2 OIL 1-12 C13H15ClN4O2S2 OIL 1-13 C15H23ClN4O2S2 OIL 1-14 C14H21ClN4O2S2 OIL 1-15 C14H19ClN4O2S2 OIL 1-16 C11H13ClN4O2S3 OIL 1-17 C12H19ClN4O2S3 OIL 1-18 C12H14ClN5O2S2 OIL 1-19 C14H17ClN4O2S2 OIL 1-20 C25H28Cl2N6O2S2 OIL 1-21 C14H21ClN4O3S OIL 2-1 C32H31Cl4N5O2S2 OIL 2-2 C24H25Cl2N5O2S2 OIL 2-3 C34H37Cl2N5O4S2 OIL 2-4 C26H37Cl2N5O2S2 OIL 2-5 C28H41Cl2N5O2S2 OIL 2-6 C26H33Cl2N5O2S2 OIL 2-7 C20H21Cl2N5O2S4 OIL 2-8 C22H33Cl2N5O2S4 OIL 2-9 C22H23Cl2N7O2S2 OIL 2-10 C24H29Cl2N5O2S2 OIL 2-11 C12H16ClN3O2S2 OIL 2-12 C18H19Cl2N3O2S2 OIL 2-13 C14H16ClN3O2S2 OIL 2-14 ...
Practice solving Addition of Amine Derivatives problems. Master even the most complex scientific problems with our step-by-step explanation videos.
TY - JOUR. T1 - Atmospheric amines - Part I. A review. AU - Ge, Xinlei. AU - Wexler, Anthony S.. AU - Clegg, Simon L.. PY - 2011/1. Y1 - 2011/1. N2 - Amines are emitted by a wide range of sources and are ubiquitous atmospheric organic bases. Approximately 150 amines and about 30 amino acids have been identified in the atmosphere. We review the present knowledge of atmospherically relevant amines with respect to their sources, fluxes, and dynamics including gas-phase reactions, gas-to-particle conversion and deposition. The health effects of aliphatic and aromatic amines are briefly summarized as well as the atmospheric occurrence and reactivity of amino acids and urea.. AB - Amines are emitted by a wide range of sources and are ubiquitous atmospheric organic bases. Approximately 150 amines and about 30 amino acids have been identified in the atmosphere. We review the present knowledge of atmospherically relevant amines with respect to their sources, fluxes, and dynamics including gas-phase ...
Compounds having two reactive functional groups are described that can be used as a tethering compound to immobilize an amine-containing material to a substrate. The first reactive functional group can be used to provide attachment to a surface of a substrate. The second reactive functional group is a N-sulfonyldicarboximide group that can be reacted with an amine-containing material, particularly a primary aliphatic amine, to form a connector group between the substrate and the amine-containing material. The invention also provides articles and methods for immobilizing amine-containing materials to a substrate.
We present an efficient and simple, metal-free and solvent-free silica gel-promoted synthesis of functionalized conjugated dienes by sequential aza-Michael/Michael reactions starting from commercially available primary amines and propiolic esters. The scope and usefulness of the method is demonstrated on 31 examples, including a range of propiolic esters, aliphatic amines and differently substituted aromatic amines. In the case of aliphatic amines, the products are obtanied within 0.5-4 h in 52-85% yield compared with 3.5-22 h under classical solution-phase synthesis, proceeding in similar or lower yields. Particular usefulness of the method is found in the case of weakly nucleophilic aromatic amines, which provide products in 21-73% yield during 2.5-9.5 h compared with 0-49% during 1-6 days under standard solution-phase conditions and in the case of more hydrophobic esters yielding products in 47-79% during 1-3 h compared with 0-45% during 4-114 h in the solvent. ...
Aliphatic amines are popular motifs in biologically relevant molecules, so chemists have myriad tools for assembling C-N bonds. Methods that make those bonds enantioselectively are particularly valuable because they can produce chiral drugs and unnatural amino acids, which are useful for studying biology. While chiral transition-metal catalysts are effective for making aromatic amines, they fall short when it comes to making aliphatic amines. These compounds tend to coordinate to the metal, poisoning the catalyst and scrambling its ability to work enantioselectively. Researchers led by Nankai Universitys Shou-Fei Zhu and Qi-Lin Zhou have managed to get around these problems by creating a reaction that uses two catalysts in tandem (Science 2019, DOI: 10.1126/science.aaw9939). The reaction (example shown) features an achiral metal catalyst-a homoscorpionate copper complex-which forms a carbene from a diazo ester. The homoscorpionate ligand protects the copper from another reactant, an aliphatic ...
Business Standard News: Corporate Action: Alkyl Amines Chemicals (ALKYLAMINE) - Business Standard News and more from Business Standard News
Alpha-oligopeptide / Glutamine or derivatives / N-acyl-alpha amino acid or derivatives / Alpha-amino acid amide / Cysteine or derivatives / Alpha-amino acid / D-alpha-amino acid / N-substituted-alpha-amino acid / Alpha-amino acid or derivatives / Fatty acylFatty acid / Dicarboxylic acid or derivatives / N-acyl-amine / Fatty amide / Organic disulfide / Dialkyldisulfide / Carboxamide group / Secondary carboxylic acid amide / Amino acid or derivatives / Amino acid / Sulfenyl compound / Carboxylic acid / Secondary aliphatic amine / Secondary amine / Primary amine / Organopnictogen compound / Organic oxygen compound / Organic nitrogen compound / Carbonyl group / Hydrocarbon derivative / Amine / Organic oxide / Primary aliphatic amine / Organosulfur compound / Organooxygen compound / Organonitrogen compound / Aliphatic acyclic compound ...
Alkyl Amines Chemicals Limited operates in the Chemicals & Allied Products sector. Alkyl Amines Chemicals Limited is engaged in the business of specialty chemicals. The Company is involved in the manufacture of organic and inorganic chemical compounds. Its products include Methylamine, Ethylamine, Isopropylamine, Propylamine, Butylamine, Ethylhexylamine, Cyclohexylamine, Diallylamine, Dimethylpropylamine, Di-Methylbutylamine, Mono-n-Butylamine, Diisobutylamine, Hydroxylnovaldiamine, Imino Bis Propylamine, Methylamine Hydrochloride and Dimethylimidazolidone. It supplies amines and amine-based chemicals to the pharmaceutical, agrochemical, rubber chemical and water treatment industries. It has approximately two manufacturing sites with over nine production plants and related utilities at Patalganga and Kurkumbh in Maharashtra. The Company caters to both domestic and international markets. It has various facilities to manufacture a range of specialty chemicals with its inhouse developed technologies.
In the systematic study of amine … LiCl [amines = NH3, CH3NH2, (CH3)2NH] complexes the possibility of an ion-pair structure and the effect of methylation on the stabilization energy is investigated. ΔEis evaluated by the SCF/4-31G method and augmented by the approximate dispersion energy calculated perturbationally. The interaction energy decreases with the increasing number of methyl groups in the amine. The dispersion energy plays a negligible role in the stabilization of complexes. None of the systems studied are ion pairs; their Li bonds are of a so-called molecular type. Due to the divergence of the multipole expansion, the attempt to correct the 4-31G stabilization energies via the electrostatic energy fails. The relative order of the ΔE in the series of complexes is verified instead in the extended basis set calculation. The lithium bonds are compared with their H-bonded analogues.. ...
Easily label your own tag ligands & other small molecules. Mix-n-Stain™ CF® dye small ligand labeling kits are designed for rapid labeling of small (MW ~ 150 - 5,000) and relatively high affinity biological ligands (or substrates). Labeling takes about 30 minutes, without a final purification step. The ligands to be labeled must contain an aliphatic amine group that is not required for biological activity of the ligand. The amine group will form a covalent linkage with the reactive CF® dye provided in the kit. For example, suitable ligands or substrates include SNAP-tag®, CLIP-tag™ and HaloTag® ligands with an aliphatic amine. Many other small ligands are also possible candidates if they meet the criteria described above.. Simply mix your small molecule ligand with the reaction buffer and the optimally formulated dye provided, and incubate for 30 minutes, followed by a brief 5 minute quenching step. No reactive Mix-n-Stain™ dye is available at the end of labeling; therefore the ...
0018]As for stabilizers, for instance there are amine compounds such as primary amine, secondary amine, and tertiary amine; ammonium carbamate, ammonium carbonate, and ammonium bicarbonate based compounds; phosphorus compounds such as phosphine, phosphite, and phosphate; sulfur compounds including thiol and sulfide. They consist of these compounds or mixture of more than at least one of them. As the concrete amine compounds, for example, they are selected from the group consisting of methyl amine, ethyl amine, n-propyl amine, isopropyl amine, n-butyl amine, isobutyl amine, isoamyl amine, n-hexyl amine, 2-ethylhexyl amine, n-heptyl amine, n-octyl amine, isooctyl amine, nonyl amine, decyl amine, dodecyl amine, hexadecyl amine, octadecyl amine, docodecyl amine, cyclopropyl amine, cyclopentyl amine, cyclohexyl amine, allyl amine, hydroxy amine, ammonium hydroxide, methoxy amine, 2-ethanolamine, methoxyethyl amine, 2-hydroxypropyl amine, 2-hydroxy-2-methylpropyl amine, methoxypropyl amine, cyanoethyl ...
A transition metal-free strategy for the dehydrogenative β-sulfonylation of tertiary cyclic amines is described. N-iodosuccinimide facilitates regioselective oxidative sulfonylation at C-H bonds positioned β to the nitrogen atom of tertiary amines, installing enaminyl sulfone functionality in cyclic systems. Mild reaction conditions, broad functional group tolerance and a wide substrate scope are demonstrated. The nucleophilic character of the enaminyl sulfone is harnessed, demonstrating potential application for scaffold diversification. ...
Heterocyclic amines are a group of chemical compounds, many of which can be formed during cooking. They are found in meats that are cooked to the well done stage, in pan drippings and in meat surfaces that show a brown or black crust. Epidemiological studies show associations between intakes of heterocyclic amines and cancers of the colon, rectum, breast, prostate, pancreas, lung, stomach/esophagus and animal feeding experiments support a causal relationship. The U.S. Department of Health and Human Services Public Health Service labeled several heterocyclic amines as likely carcinogens in its 13th Report on Carcinogens. Changes in cooking techniques reduce the level of heterocyclic amines. More than 20 compounds fall into the category of heterocyclic amines, often abbreviated HCAs[1]. Table 1 shows the chemical name and abbreviation of those most commonly studied. All four of these compounds are included in the 13th Report on Carcinogens. The compounds found in food are formed when creatine (a ...
Decades of drug-discovery research have shown that drug molecules that need to cross the cell membrane exhibit a relatively narrow range of physicochemical properties, e.g., molecular mass, hydrophobicity and polarity. A recent survey of a dataset of human approved drugs has found that 27% of these are aliphatic amines and 20% are carboxylic acids [1,2]. In an aqueous environment at neutral pH, aliphatic amines have a propensity to be protonated and carry an electric charge of +1e.. ...
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Global (North America, Europe and Asia-Pacific, South America, Middle East and Africa) Copper Paste Market 2018 Forecast to 2023. COPPER PASTE is a high temperature anti-seize lubricant. A soft, copper-coloured paste, based on micronized copper powder and synergistic anti-oxidant, anti-corrosion and anti-wear additives suspended in premium grade stable oil. It is an effective anti-seize formulation, preventing metal-to-metal contact, seizing, galling, and fretting corrosion. Scope of the Report: This report focuses on .... February 2018 , $4880 ,View Details>> ...
Data on 6,500 pesticides, insecticides and herbicides including toxicity, water pollution, ecological toxicity, uses and regulatory status.
Wherever you look, a part of us is there From coatings to transportation and energy to construction, weve been enabling progress through Responsible Chemistry for over half a century ...
Amine salts, amic acids, amic acid amine salts bis-amides and imides of oil-soluble thio-bis-(C12-50 alkyl lactone acid), e.g. a secondary hydrogenated tallow amide of dithio-bis-(C16 -C24 alkyl lactone carboxylic acid), are useful in combination with a coadditive hydrocarbon such as an amorphous hydrocarbon or a hydrogenated polybutadiene in improving the cold flow properties of distillate hydrocarbon oils.
Three different cyclic amine dyes, 9-(2-chlorophenyl)-9H-carbazole (CPCz; C18H12ClN), 10-(2-chlorophenyl)-10H-phenoxazine (CPPo; C18H12ClNO), and 10-(2-chlorophenyl)-10H-phenothiazine (CPPt; C18H12ClNS), were synthesized to systematically investigate their optical properties and electronic band structures with molecular microstructure. By the insertion of oxygen or sulfur atom into carbazole moiety, the absorption and photoluminescence (PL) spectra showed bathochromic shift, and the Stokes shift was increased. Ionization potential of CPCz was measured as 5.75eV, on the other hand, CPPo and CPPt showed their ionization potentials of 5.37 and 5.39eV, respectively. The minute difference in chemical structure such as insertion of oxygen or sulfur atom caused huge change of optical property and electronic band structure. ...
Novel amine and amidine derivatives of di-O-(n-higher alkyl and alkenyl)-glycerols and -propanediols, and their pharmaceutically acceptable acid addition salts, are useful for combating viral infections in mammals. Of particular interest is 1,3-di-O-(n-hexadecyl)-2-O-(3-aminopropyl)-glycerol, and its pharmaceutically acceptable acid addition salts.
Overview:. Product name: Dabco 8154. Alias: 2-ethylhexanoic acid solution of triethylenediamine, Dabco 8154, amine catalyst Dabco 8154, catalyst Dabco 8154, acid-blocked tertiary amine catalyst, polyurethane delayed gel catalyst, delayed gel catalyst 8154. Product description: Dabco 8154 is light yellow liquid at room temperature, soluble in water;. Product properties. Appearance: light yellow liquid. Viscosity (25℃, mPa.s): 160. Density (25℃, g/cm3): 1.04. Water solubility: soluble in water. Flash point (PMCC, ℃): 110. Hydroxyl value (mgKOH/g): 548. Product Usage. Dabco 8154 is an acid-blocked tertiary amine catalyst, which is mainly used to promote the reaction of urethane (polyol-isocyanate) and has the effect of delaying the initiation of the reaction;. Dabco 8154 is mainly used for polyurethane molded foam, prolonging milking time, improving fluidity and improving processing efficiency of foam.. Introduction:. Dabco 8154 catalyst is a blocked tertiary amine polyurethane catalyst, ...
Solvation significantly affects the basicity of amines. N-H groups strongly interact with water, especially in ammonium ions. Consequently, the basicity of ammonia is enhanced by 1011 by solvation. The intrinsic basicity of amines, i.e. the situation where solvation is unimportant, has been evaluated in the gas phase. In the gas phase, amines exhibit the basicities predicted from the electron-releasing effects of the organic substituents. Thus tertiary amines are more basic than secondary amines, which are more basic than primary amines, and finally ammonia is least basic. The order of pKbs (basicities in water) does not follow this order. Similarly aniline is more basic than ammonia in the gas phase, but ten thousand times less so in aqueous solution.[11]. In aprotic polar solvents such as DMSO, DMF, and acetonitrile the energy of solvation is not as high as in protic polar solvents like water and methanol. For this reason, the basicity of amines in these aprotic solvents is almost solely ...
The far infrared spectra of a number of aliphatic amines have been recorded as dilute solutions in cyclohexane. A characteristic band with center at 225 ± 10 cm,sup,−1,/sup, is present in the spectra of aliphatic primary amines with a primary α-carbon atom. On the basis of the deuterium shift this band is assigned to the amino torsion. The effects of branching at the α-carbon, coupling of methyl and amino torsions, and intramolecular association on the frequencies of NH,sub,2,/sub, torsions are discussed ...
US EPA PC Code ); 039301 (US EPA PC Code Text ); 2-Hydroxypropanoic acid, compd. with 1-dodecanamine (1:1); 2-Hydroxypropanoic acid, compd. with 1-dodecanamine (1:1); 2002 (CA DPR Chem Code) ); 7491-20-5 (CAS number); 7491205; 7491205 (CAS number without hyphens); Dodecylamine lactate; DODECYLAMINE LACTATE (CA DPR Chem Code Text ); Dodecylaminelactate; Lactic acid, compd. with dodecylamine (1:1); Lactic acid, compd. with dodecylamine (1:1 ...
Tertiary Amines Market - By Region:. United States, Europe, China, Japan, Southeast Asia, India & Central & South America. This study mainly helps understand which market segments or Region or Country they should focus in coming years to channelize their efforts and investments to maximize growth and profitability. Get a Customization report as Per Requirements @ https://www.inforgrowth.com/customization/6613285/Tertiary Amines-market. Reasons for buying this report:. * It offers an analysis of changing competitive scenarios.. * For making informed decisions in the businesses, it offers analytical data with strategic planning methodologies.. * It offers a six-year assessment of Tertiary Amines Market.. *It helps in understanding the major key product segments.. * Researchers throw light on the dynamics of the market such as drivers, restraints, trends, and opportunities.. * It offers regional analysis of Tertiary Amines Market along with business profiles of several stakeholders.. * It offers ...
Angelino, S., Suess, D. T., and Prather, K. A.: Formation of aerosol particles from reactions of secondary and tertiary alkylamines: Characterization by aerosol time-of-flight mass spectrometry, Environ. Sci. Technol., 35, 3130-3138, https://doi.org/10.1021/es0015444, 2001. Berndt, T., Stratmann, F., Sipilä, M., Vanhanen, J., Petäjä, T., Mikkilä, J., Grüner, A., Spindler, G., Lee Mauldin III, R., Curtius, J., Kulmala, M., and Heintzenberg, J.: Laboratory study on new particle formation from the reaction OH + SO2: influence of experimental conditions, H2O vapour, NH3 and the amine tert-butylamine on the overall process, Atmos. Chem. Phys., 10, 7101-7116, https://doi.org/10.5194/acp-10-7101-2010, 2010. Bzdek, B. R., Ridge, D. P., and Johnston, M. V.: Amine exchange into ammonium bisulfate and ammonium nitrate nuclei, Atmos. Chem. Phys., 10, 3495-3503, https://doi.org/10.5194/acp-10-3495-2010, 2010. Cadle, S. H. and Mulawa, P. A.: Low-molecular-weight aliphatic amines in exhaust from ...
|b|Amines|/b| |br/|Long chain aliphatic amines are widely used to combat corrosion. Octadecylamine is used to protect condensate lines by forming a protective film. Amines that are volatile in steam are used to neutralise carbon dioxide in boiler condensate. They are also used to increase the pH value of feedwater or boiler water in order to prevent corrosion.
Aromatic amine epoxy hardener [5], Aromatic amine epoxy hardener [5] supplier, Aromatic amine epoxy hardener [5] distributor, CAS -, Aromatic amine epoxy hardener [5] manufacturer, Aromatic amine epoxy hardener [5] wholesale
A dispersant derivatized from a functionalized hydrocarbon and a polyamine having one primary amine and 1-10, preferably 3-8 secondary or tertiary amines; preferably where said functionalized hydrocarbon is a Koch-derived hydrocarbon.
No data available for the determination of toxicokinetics, metabolism and distribution. In general, lower primary aliphatic amines are metabolized to the corresponding carboxylic acid and urea. Assessment of Toxicokinetic Behaviour 3-(Dimethylamino)propylamine (Cas-No. 109-55-7) is a colorless liquid with a molecular weight of 102.2 g/mol and a vapor pressure of 5.9 hPa (20°C). It is miscible in water and the log Po/w is -0.352. Evidence for systemic availability of 3-(Dimethylamino)propylamine comes from acute (oral, dermal, inhalation) and subacute toxicity. The LD50 for oral acute toxicity in rats was calculated as ca. 1600 mg/kg body weight (BASF, 1958). Main clinical signs observed were drowsiness and staggered gait. At necropsy, decomposition of abdominal cavity and haemorrhagic stomachs were observed. In three further studies the test substance caused likewise moderate toxicity after a single ingestion LD50 = 1037 mg/kg BW (Hoechst, 1979), LD50 = 922 mg/kg BW (Bayer, 1979), LD50=1870 ...
a class of organic compounds of nitrogen that may be considered as derived from ammonia (NH3) by replacing one or more of the hydrogen atoms by organic radicals, such as CH3 or C6H5, as in methylamine and aniline. The former is a gas at ordinary temperature and pressure, but other amines are liquids or solids. All amines are basic in nature and usually combine readily with hydrochloric or other strong acids to form salts ...
Aradur®Aradur® curing agents are supplied in liquid or solid form and can be used in conjunction with Araldite® epoxy resins to achieve a broad range of thermal, mechanical and electrical properties. This complete line of high performance curing agents includes reactive polyamides, polyamido amines, aliphatic amines, cycloaliphatic amines, aromatic amines, anhydrides and novolacs ...
The chemoselective acylation of primary aliphatic amines has been achieved in under ten minutes (and for aromatic amines under 120 min) using vibration ball-milling, avoiding undesirable solvents which are typically employed for such reactions (e.g.DMF). Under optimised conditions, the synthesis of amides in
This invention relates to certain cyclic amine derivatives of Formula (I) that are CCR-3 receptor antagonists, pharmaceutical compositions containing them, methods for their use and methods for preparing these compounds.
Amines are widely used in the production of numerous products for multiple industries and their use is expected to increase. Global amines market is expected to reach over $14 billion by 2020, with an average annual growth of 3.5%. Primary amines are most useful in the larger markets of ethanolamines and fatty amines.Cur ... Read more ...
Relative Strength Of Organic Bases: Higher the electron density on nitrogen, more is the basic character of amine. A compound is basic in nature, if its conjugate acid can be stabilized through resonance …
Amine dehydrogenase (AmDH) possesses tremendous potential for the synthesis of chiral amines because AmDH catalyzes the asymmetric reductive amination of ketone with high enatioselectivity. Although a reductive application of AmDH is favored in practice, the oxidative route is interesting as well for the preparation of chiral amines. Here, the kinetic resolution of racemic amines using AmDH was first extensively studied, and the AmDH reaction was combined with an NADH oxidase (Nox) to regenerate NAD+ and to drive the reaction forward. When the kinetic resolution was carried out with 10 mM rac-2-aminoheptane and 5 mM rac-α-methylbenzylamine (α-MBA) using purified enzymes, the enantiomeric excess (ee) values were less than 26% due to the product inhibition of AmDH by ketone and the inhibition of Nox by the substrate amine. The use of a whole-cell biocatalyst co-expressing AmDH and Nox apparently reduces the substrate and product inhibition, and/or it increases the stability of the enzymes. Fifty
A primary aliphatic amine with excellent resistance to oxidation, fluidity, low viscosity over a wide range of temperature, outstanding color stability, and high solubility in petroleum hydrocarbons.
C08G65/2624-Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing nitrogen containing amine groups containing aliphatic amine groups ...
Prostate Cancer is the most frequently diagnosed malignancy and second leading cause of cancer-related Death among men in the United States. Identifying risk factors of this disease and developing strategies for prevention are critical. A number of epidemiologic studies have reported an association between frequent consumption of well-done cooked meats, containing the heterocyclic aromatic amine (HAA) 2-amino-1-methyl- 6-phenylimidazo[4,5-b]pyridine (PhIP) and Prostate Cancer risk. PhIP is a potent rodent prostate carcinogen, and it induces oxidative stress, atrophy of the acini, and inflammation of the prostate. These are critical features that occur in human prostate carcinogenesis. A paradigm has been put forth for a causal role of consumption of well-done cooked meats containing PhIP (and other HAAs) in the etiology of Prostate Cancer; however, biomarkers of exposure and DNA damage are lacking to validate this model. Our long-term goal is to assess the cancer risk posed by HAAs, by employing ...