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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 3-Bromo-4-chloronitrobenzene( cas:16588-26-4 ) is researched.HPLC of Formula: 16588-26-4.Sheng, Yao; Wang, Xueguang; Xing, Zhikang; Chen, Xiubin; Zou, Xiujing; Lu, Xionggang published the article 《Highly Active and Chemoselective Reduction of Halogenated Nitroarenes Catalyzed by Ordered Mesoporous Carbon Supported Platinum Nanoparticles》 about this compound( cas:16588-26-4 ) in ACS Sustainable Chemistry & Engineering. Keywords: reduction halogenated nitroarene catalyzed carbon platinum nanoparticle. Let’s learn more about this compound (cas:16588-26-4).

Highly dispersed Pt nanoparticles (∼2.2 nm) on ordered mesoporous carbon (Pt/CMK-3-HQ) were first prepared through a two-step impregnation route with aqueous solutions of 8-hydroxyquinoline (8-HQ) and H2PtCl6, resp. The Pt/CMK-3-HQ quant. converted various halogenated nitroarenes to the corresponding haloanilines using hydrazine hydrate with unprecedented activities (e.g., turnover frequency for o-chloronitrobenzene was 30.2 s-1) and exhibited high stability with 20 cycles without decrease in catalytic efficiency. The high activity and chemoselectivity of Pt/CMK-3-HQ were attributed to the cooperation effect between Pt and N species, promoting cleavage of hydrazine to generate more Pt-H- and N-H+ species for reduction of nitro groups and weakening the interaction between halogen groups and Pt atoms for activation of C-halogen bonds.

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Lu, Hongtao; Geng, Zhiyue; Li, Jingya; Zou, Dapeng; Wu, Yusheng; Wu, Yangjie published the article 《Metal-Free Reduction of Aromatic Nitro Compounds to Aromatic Amines with B2pin2 in Isopropanol》. Keywords: metal free aromatic nitro reduction bispinacolato diboron isopropanol; aromatic amine preparation green chem.They researched the compound: 3-Bromo-4-chloronitrobenzene( cas:16588-26-4 ).Category: alcohols-buliding-blocks. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:16588-26-4) here.

A metal-free reduction of aromatic nitro compounds to the corresponding amines has been achieved by a combination of B2pin2 and KOtBu in isopropanol. A series of nitro compounds containing various reducible functional groups were chemoselectively reduced in good to excellent yields.

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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, Article, Journal of Organic Chemistry called Indazoles: Regioselective Protection and Subsequent Amine Coupling Reactions, Author is Slade, David J.; Pelz, Nicholas F.; Bodnar, Wanda; Lampe, John W.; Watson, Paul S., which mentions a compound: 651780-02-8, SMILESS is CC(C)(C)OC(=O)N1N=CC2=CC(Br)=CC=C12, Molecular C12H13BrN2O2, Reference of tert-Butyl 5-bromo-1H-indazole-1-carboxylate.

Indazoles are unselectively protected under strongly basic conditions to give a mixture at positions N-1 and N-2. Under mildly acidic conditions, regioselective protection at N-2 takes place. Thermodn. conditions lead to regioselective protection at N-1. This trend applies to various substituted indazoles. Protected 5-bromoindazoles participate in Buchwald reactions with a range of amines to generate novel derivatives

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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, Synlett called Tribromoisocyanuric acid in trifluoroacetic acid: an efficient system for smooth brominating of moderately deactivated arenes, Author is de Almeida, Leonardo S.; de Mattos, Marcio C. S.; Esteves, Pierre M., which mentions a compound: 16588-26-4, SMILESS is BrC1=C(C=CC(=C1)[N+](=O)[O-])Cl, Molecular C6H3BrClNO2, Safety of 3-Bromo-4-chloronitrobenzene.

Moderately deactivated arenes are efficiently brominated by the reaction with tribromoisocyanuric acid (0.34 mol equiv) in trifluoroacetic acid at room temperature in 48-85% isolated yield. This medium avoids the polybromination of the substrate, observed in the same reaction performed in 98% H2SO4.

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Application In Synthesis of 3-Bromo-4-chloronitrobenzene. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 3-Bromo-4-chloronitrobenzene, is researched, Molecular C6H3BrClNO2, CAS is 16588-26-4, about Gold-catalyzed direct hydrogenative coupling of nitroarenes to synthesize aromatic azo compounds. Author is Liu, Xiang; Li, Hai-Qian; Ye, Sen; Liu, Yong-Mei; He, He-Yong; Cao, Yong.

The azo linkage is a prominent chem. motif which has found numerous applications in materials science, pharmaceuticals, and agrochems. Described herein is a sustainable heterogeneous-gold-catalyzed synthesis of azo arenes. Available nitroarenes are deoxygenated and linked selectively by the formation of N-N bonds using mol. H2 without any external additives. As a result of a unique and remarkable synergy between the metal and support, a facile surface-mediated condensation of nitroso and hydroxylamine intermediates is enabled, and the desired transformation proceeds in a highly selective manner under mild reaction conditions. The protocol tolerates a large variety of functional groups and offers a general and versatile method for the environmentally friendly synthesis of sym. or asym. aromatic azo compounds © 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

There is still a lot of research devoted to this compound(SMILES：BrC1=C(C=CC(=C1)[N+](=O)[O-])Cl)Application In Synthesis of 3-Bromo-4-chloronitrobenzene, and with the development of science, more effects of this compound(16588-26-4) can be discovered.

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Name: 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 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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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 3-Bromo-4-chloronitrobenzene, is researched, Molecular C6H3BrClNO2, CAS is 16588-26-4, about Structure-activity relationships for chemical and glutathione S-transferase-catalyzed glutathione conjugation reactions of a series of 2-substituted 1-chloro-4-nitrobenzenes.Safety of 3-Bromo-4-chloronitrobenzene.

Glutathione S-transferases (GSTs) constitute an important class of phase II (de)toxifying enzymes, catalyzing the conjugation of glutathione (GSH) with electrophilic compounds In the present study, Km, kcat and kcat/Km values for the rat GST 1-1-, 3-3-, 4-4- and 7-7-catalyzed conjugation reactions between GSH and a series of 10 different 2-substituted 1-chloro-4-nitrobenzenes, and the second-order rate constants (ks) of the corresponding base-catalyzed reactions, were correlated with nine classical physico-chem. parameters (electronic, steric and lipophilic) of the substituents and with 16 computer-calculated mol. parameters of the substrates and of the corresponding Meisenheimer complexes with MeS- as a model nucleophile for GS- (charge distributions and several energy values), giving structure-activity relationships. On the basis of an identical dependence of the base-catalyzed as well as the GST 1-1- and GST 7-7-catalyzed reactions on electronic parameters (among others, Hammett substituent constant σp and charge on p-nitro substituents), and the finding that the corresponding reactions catalyzed by GSTs 3-3 and 4-4 depend to a significantly lesser extent on these parameters, it was concluded that the Mu-class GST isoenzymes have a rate-determining transition state in the conjugation reaction between 2-substituted 1-chloro-4-nitrobenzenes and GSH which is different from that of the other two GSTs. Several alternative rate-limiting transition states for GST 3-3 and 4-4 are discussed. Furthermore, based on the obtained structure-activity relationships, it was possible to predict the kcat/Km values of the four GST isoenzymes and the ks of the base-catalyzed GSH conjugation of 1-chloro-4-nitrobenzene.

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Name: tert-Butyl 5-bromo-1H-indazole-1-carboxylate. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: tert-Butyl 5-bromo-1H-indazole-1-carboxylate, is researched, Molecular C12H13BrN2O2, CAS is 651780-02-8, about Indazoles: Regioselective Protection and Subsequent Amine Coupling Reactions. Author is Slade, David J.; Pelz, Nicholas F.; Bodnar, Wanda; Lampe, John W.; Watson, Paul S..

Indazoles are unselectively protected under strongly basic conditions to give a mixture at positions N-1 and N-2. Under mildly acidic conditions, regioselective protection at N-2 takes place. Thermodn. conditions lead to regioselective protection at N-1. This trend applies to various substituted indazoles. Protected 5-bromoindazoles participate in Buchwald reactions with a range of amines to generate novel derivatives

There is still a lot of research devoted to this compound(SMILES：CC(C)(C)OC(=O)N1N=CC2=CC(Br)=CC=C12)Name: tert-Butyl 5-bromo-1H-indazole-1-carboxylate, and with the development of science, more effects of this compound(651780-02-8) can be discovered.

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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: 651780-02-8, is researched, Molecular C12H13BrN2O2, about Fluorination of Boronic Acids Mediated by Silver(I) Triflate, the main research direction is fluoroarene preparation; fluorination boronic acid aryl alkenyl silver mediated regiospecific; silver mediated regiospecific fluorination boronic acid aryl alkenyl.Recommanded Product: tert-Butyl 5-bromo-1H-indazole-1-carboxylate.

A regiospecific Ag-mediated fluorination reaction of aryl- and alkenylboronic acids and esters is reported. The fluorination reaction uses com. available reagents, does not require the addition of exogenous ligands, and can be performed on a multigram scale. This report discloses the first practical reaction sequence from arylboronic acid to aryl fluorides.

There is still a lot of research devoted to this compound(SMILES：CC(C)(C)OC(=O)N1N=CC2=CC(Br)=CC=C12)Recommanded Product: tert-Butyl 5-bromo-1H-indazole-1-carboxylate, and with the development of science, more effects of this compound(651780-02-8) can be discovered.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: tert-Butyl 5-bromo-1H-indazole-1-carboxylate, is researched, Molecular C12H13BrN2O2, CAS is 651780-02-8, about Deprotection of N-tert-Butoxycarbonyl (Boc) Protected Functionalized Heteroarenes via Addition-Elimination with 3-Methoxypropylamine.Recommanded Product: 651780-02-8.

Continued pursuit of functionalized soft-N-donor complexant scaffolds with favorable solubility and kinetics profiles applicable for the separation of the trivalent minor actinides from the lanthanides has attracted significant interest over the last three decades. Recent work from this laboratory resulted in the production of various N-Boc protected [1,2,4]triazinyl-pyridin-2-yl indole Lewis basic procomplexants which necessitated the removal of the indole N-Boc protecting group prior to evaluation of complexant efficacy in separations assays. Traditional deprotection strategies involving trifluoroacetic and other protic and Lewis acids proved unsuccessful in removal of the recalcitrant indole-N-Boc protecting group necessitating the development of a new strategy for deprotection of this complexant class. A serendipitous result facilitated utilization of 3-methoxypropylamine as a mild deprotecting agent for various N-Boc protected heteroarenes via a proposed addition-elimination mechanism. Method development, application to various heteroarenes including indoles, 1,2-indazoles, 1,2-pyrazoles, and related derivatives, a ten-fold scale-up reaction, and exptl. evaluation of a preliminary mechanistic hypothesis are reported herein.

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