Category: 16588-26-4

Application of 16588-26-4. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 3-Bromo-4-chloronitrobenzene, is researched, Molecular C6H3BrClNO2, CAS is 16588-26-4, about Cobalt-Catalyzed C-N Bond-Forming Reaction between Chloronitrobenzenes and Secondary Amines. Author is Toma, Gabriel; Yamaguchi, Ryohei.

Cyclic secondary amines react with mono- or dichloronitrobenzenes in the presence of a catalytic amount of cobalt(II) chloride. Phosphane ligands are beneficial for the reaction, although the bite-angle effect was not strong. The resulting nitro-substituted tertiary amines are important as bioactive compounds and can also be intermediates for the synthesis of substituted anilines. This work represents the first cobalt-catalyzed approach to C-N bond-forming reactions involving aromatic chlorides and cyclic secondary amines. The reaction is ortho- and para-selective, with meta-substituted halides being unreactive in this procedure.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 3-Bromo-4-chloronitrobenzene(SMILESS: BrC1=C(C=CC(=C1)[N+](=O)[O-])Cl,cas:16588-26-4) is researched.Product Details of 1315-06-6. The article 《Copper(I)-induced bromine-hydrogen exchange of 2,3-dibromoanilines》 in relation to this compound, is published in Acta Chemica Scandinavica, Series B: Organic Chemistry and Biochemistry. Let’s take a look at the latest research on this compound (cas:16588-26-4).

The Cu(I)-induced Br/H exchange reaction of 2,3-dibromoaniline and 5-substituted 2,3-dibromoanilines in the 2-position has been kinetically studied in aqueous HOAc-HCl medium at 90°. The dehalogenation reaction is 2nd order, 1st in both substrate and Cu+, and may be interpreted as a reductive substitution, composed of two 1-electron steps. The 2,3-dibromophenol was only qual. examined but gave similar results.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Nucleophilic substitution of aromatic chlorine in diazonium ions by bromide ions》. Authors are Lamm, Bo.The article about the compound:3-Bromo-4-chloronitrobenzenecas:16588-26-4,SMILESS:BrC1=C(C=CC(=C1)[N+](=O)[O-])Cl).Related Products of 16588-26-4. Through the article, more information about this compound (cas:16588-26-4) is conveyed.

To determine why a Cl atom in a suitably substituted diazonium ion should not be replaced by a Br- ion, the reaction of 2-chloro-5-nitrobenzenediazonium ion in an HBr-AcOH-H2O medium at 25° was studied. It was found that some of the aromatic Cl is “”frozen in”” and no quant. conversion of aromatic Cl to Br can occur; the reverse reactions are considerably more rapid than the forward ones, so that a small amount of Cl- ions generated in the exchange reaction produces an equilibrium containing comparable amounts of each, despite the large excess of HBr; and the equilibrium is continually being disturbed by the side-reactions, which cannot be suppressed by increasing the Br- ion concentration

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Safety of 3-Bromo-4-chloronitrobenzene. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 3-Bromo-4-chloronitrobenzene, is researched, Molecular C6H3BrClNO2, CAS is 16588-26-4, about Optimization of 5-(2,6-dichlorophenyl)-3-hydroxy-2-mercaptocyclohex-2-enones as potent inhibitors of human lactate dehydrogenase. Author is Labadie, Sharada; Dragovich, Peter S.; Chen, Jinhua; Fauber, Benjamin P.; Boggs, Jason; Corson, Laura B.; Ding, Charles Z.; Eigenbrot, Charles; Ge, HongXiu; Ho, Qunh; Lai, Kwong Wah; Ma, Shuguang; Malek, Shiva; Peterson, David; Purkey, Hans E.; Robarge, Kirk; Salphati, Laurent; Sideris, Steven; Ultsch, Mark; VanderPorten, Erica; Wei, BinQing; Xu, Qing; Yen, Ivana; Yue, Qin; Zhang, Huihui; Zhang, Xuying; Zhou, Aihe.

Optimization of 5-(2,6-dichlorophenyl)-3-hydroxy-2-mercaptocyclohex-2-enone using structure-based design strategies resulted in inhibitors with considerable improvement in biochem. potency against human lactate dehydrogenase A (LDHA). These potent inhibitors were typically selective for LDHA over LDHB isoform (4-10 fold) and other structurally related malate dehydrogenases, MDH1 and MDH2 (>500 fold). An X-ray crystal structure of enzymically most potent mol. bound to LDHA revealed two addnl. interactions associated with enhanced biochem. potency.

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Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Meditsinskaya Parazitologiya i Parazitarnye Bolezni called Synthesis and study of trichinellocidal activity of some bromine and chlorine derivatives of 8-quinolyloxysalicylanilides, Author is Trusov, S. N.; Sevbo, D. P.; Veretennikova, N. L.; Mikhailitsyn, F. S., which mentions a compound: 16588-26-4, SMILESS is BrC1=C(C=CC(=C1)[N+](=O)[O-])Cl, Molecular C6H3BrClNO2, Related Products of 16588-26-4.

Some title derivatives were synthesized and tested for trichinellocidal activity. N-[3-bromophenyl-4-(5-chloroquinolinoxy)]-3,5-dibromosalicylamide exhibited trichinellocidal activity (in mice infected with decapsulated Trichinella spiralis) that was close to that of mebendazole.

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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Aromatic bromination in concentrated nitric acid, published in 2014, which mentions a compound: 16588-26-4, Name is 3-Bromo-4-chloronitrobenzene, Molecular C6H3BrClNO2, Synthetic Route of C6H3BrClNO2.

Action of bromine in concentrated nitric acid allows carrying out mono- and polybromination of moderately deactivated aromatic compounds 4-Chloronitrobenzene and isophthalic acid turnes into 3-bromo-4-chloronitrobenzene and 5-bromoisophthalic acid at reaction with bromine in concentrated nitric acid at 20°C whereas in absence of bromine in the same conditions 4-chloro-1,3-dinitrobenzene and 5-nitroisophthalic acid are formed accordingly. Presence of bromine in concentrated nitric acid changes nitrating capacity to brominating one. Terephthalic acid and phthalic anhydride at heating with bromine in concentrated nitric acid can be transformed to appropriating tetrabromo substituted compounds

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 3-Bromo-4-chloronitrobenzene, is researched, Molecular C6H3BrClNO2, CAS is 16588-26-4, about 4-Methoxy-N-[2-(trifluoromethyl)biphenyl-4-ylcarbamoyl]nicotinamide: A Potent and Selective Agonist of S1P1, the main research direction is methoxytrifluoromethyl biphenylyl carbamoyl nicotinamide analog preparation S1P1 agonist; Sphingosine-1-phosphate-1 receptor agonist; immunosuppression; multiple sclerosis; peripheral lymphocyte count.Synthetic Route of C6H3BrClNO2.

The sphingosine-1-phosphate-1 receptor (S1P1) and its endogenous ligand sphingosine-1-phosphate (S1P) cooperatively regulate lymphocyte trafficking from the lymphatic system. Herein, we disclose 4-methoxy-N-[2-(trifluoromethyl)biphenyl-4-ylcarbamoyl]nicotinamide (8), an uncommon example of a synthetic S1P1 agonist lacking a polar headgroup, which is shown to effect dramatic reduction of circulating lymphocytes (POC = -78%) in rat 24 h after a single oral dose (1 mg/kg). The excellent potency that 8 exhibits toward S1P1 (EC50 = 0.035 μM, 96% efficacy) and the >100-fold selectivity that it displays against receptor subtypes S1P2-5 suggest that it may serve as a valuable tool to understand the clin. relevance of selective S1P1 agonism.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Nucleophilic substitution of aromatic chlorine in diazonium ions by bromide ions》. Authors are Lamm, Bo.The article about the compound:3-Bromo-4-chloronitrobenzenecas:16588-26-4,SMILESS:BrC1=C(C=CC(=C1)[N+](=O)[O-])Cl).Recommanded Product: 3-Bromo-4-chloronitrobenzene. Through the article, more information about this compound (cas:16588-26-4) is conveyed.

To determine why a Cl atom in a suitably substituted diazonium ion should not be replaced by a Br- ion, the reaction of 2-chloro-5-nitrobenzenediazonium ion in an HBr-AcOH-H2O medium at 25° was studied. It was found that some of the aromatic Cl is “”frozen in”” and no quant. conversion of aromatic Cl to Br can occur; the reverse reactions are considerably more rapid than the forward ones, so that a small amount of Cl- ions generated in the exchange reaction produces an equilibrium containing comparable amounts of each, despite the large excess of HBr; and the equilibrium is continually being disturbed by the side-reactions, which cannot be suppressed by increasing the Br- ion concentration

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Category: alcohols-buliding-blocks. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 3-Bromo-4-chloronitrobenzene, is researched, Molecular C6H3BrClNO2, CAS is 16588-26-4, about Utilization of a Hydrogen Source from Renewable Lignocellulosic Biomass for Hydrogenation of Nitroarenes. Author is Tan, Fang-Fang; Tang, Kai-Li; Zhang, Ping; Guo, Yan-Jun; Qu, Mengnan; Li, Yang.

Herein, the utilization of a hydrogen source from renewable lignocellulosic biomass, one of the most abundant renewable sources in nature, for a hydrogenation of nitroarenes was described. The hydrogenation was demonstrated by reduction of nitroarenes to arylamines e.g., I in up to 95% yields. Mechanism studies suggested that the hydrogenation occurred via a hydrogen transformation pathway.

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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 16588-26-4, is researched, Molecular C6H3BrClNO2, about A Predictive Substrate Model for Rat Glutathione S-Transferase 4-4, the main research direction is glutathione transferase predictive substrate model.Application of 16588-26-4.

Mol. modeling techniques have been used to derive a substrate model for class mu rat glutathione S-transferase 4-4 (GST 4-4). Information on regio- and stereoselective product formation of 20 substrates covering three chem. and structurally different classes was used to construct a substrate model containing three interaction sites responsible for Lewis acid-Lewis base interactions (IS1, IS2, and IS3), as well as a region responsible for aromatic interactions (IS4). Exptl. data suggest that the first protein interaction site (pIS1, interacting with IS1) corresponds with Tyr115, while the other protein interaction sites (pIS2 and pIS3) probably correspond with other Lewis acidic amino acids. All substrates exhibited pos. mol. electrostatic potentials (MEPs) near the site of conjugation with glutathione (GSH), as well as neg. MEP values near the position of groups with Lewis base properties (IS1, IS2, or IS3), which interact with pIS1, pIS2, or pIS3, resp. Obviously, complementarity between the MEPs of substrates and protein in specific regions is important. The substrate specificity and stereoselectivity of GST 4-4 are most likely determined by pIS1 and the distance between the site of GSH attack and Lewis base atoms in the substrates which interact with either pIS2, pIS3, or a combination of these sites. Interaction between aromatic regions in the substrate with aromatic amino acids in the protein further stabilizes the substrate in the active site. The predictive value of the model has been evaluated by rationalizing the conjugation to GSH of 11 substrates of GST 4-4 (representing 3 classes of compounds) which were not used to construct the model. All known metabolites of these substrates are explained with the model. As the computer-aided predictions appear to correlate well with exptl. results, the presented substrate model may be useful to identify new potential GST 4-4 substrates.

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