Author: tianli

Computed Properties of C22H24BF4N3O. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: (5aS,10bR)-2-(2,6-Diethylphenyl)-4,5a,6,10b-tetrahydro-2H-indeno[2,1-b][1,2,4]triazolo[4,3-d][1,4]oxazin-11-ium tetrafluoroborate, is researched, Molecular C22H24BF4N3O, CAS is 1787246-78-9, about Chemoselective N-Heterocyclic Carbene-Catalyzed Cascade of Enals with Nitroalkenes. Author is Wu, Zijun; Wang, Xu; Li, Fangyi; Wu, Jicheng; Wang, Jian.

An unprecedented N-heterocyclic carbene catalyzed chemoselective and enantioselective cascade reaction of enals with nitroalkenes has been developed. A wide range of enantioenriched dihydrocoumarins has been prepared, and the reaction goes through an enolate intermediate generated under a catalytic process.

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Name: 3-Bromo-4-chloronitrobenzene. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 3-Bromo-4-chloronitrobenzene, is researched, Molecular C6H3BrClNO2, CAS is 16588-26-4, about In Situ Synthesized Silica-Supported Co@N-Doped Carbon as Highly Efficient and Reusable Catalysts for Selective Reduction of Halogenated Nitroaromatics. Author is Sheng, Yao; Wang, Xueguang; Yue, Shengnan; Cheng, Gonglin; Zou, Xiujing; Lu, Xionggang.

Silica-supported Co@N-doped carbon (Co@CN/SiO2) catalysts were first prepared by a one-step impregnation with a mixed solution of cobalt nitrate, glucose and urea, followed by in situ carbonization and reduction The Co@CN/SiO2 catalysts were investigated for the selective reduction of nitro aromatics RNO2 (R = Ph, 4,5-dichloro-2-nitroaniline, 2-chloro-3-nitropyridine, etc.) to the corresponding anilines RNH2 using hydrazine hydrate. The Co@CN/SiO2-500 carbonized at 500°C exhibited the highest catalytic activity and excellent stability without any decay of activity after 6 cycles for the reduction of nitrobenzene. Both metallic Co atoms and Co-N species formed in the Co@CN/SiO2 catalysts were active, but the Co-N species were dominant active sites. The high activities of the Co@CN/SiO2 catalysts were attributed to the synergistic effect between the Co and N atoms, promoting heterolytic cleavage of hydrazine to form H+/H- pairs. Representative examples demonstrated that the Co@CN/SiO2-500 could completely transform various halogen-substituted nitro aromatics to the corresponding halogenated anilines with high TOFs and selectivity of >99.5%.

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Application of 12080-32-9. 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: Dichloro(1,5-cyclooctadiene)platinum(II), is researched, Molecular C8H12Cl2Pt, CAS is 12080-32-9, about Multifunctional Pt(II)-Based Metallo-Supramolecular Polymer with Carboxylic Acid Groups: Electrochemical, Mechanochemical, Humidity, and pH Response. Author is Chakraborty, Chanchal; Rana, Utpal; Moriyama, Satoshi; Higuchi, Masayoshi.

We report multifunctional Pt(II)-based metallo-supramol. polymer with carboxylic acid groups (polyPtC). The polymer showed multi-stimuli-responsive emission to electrochem. redox, mech. force, humidity, and pH. It also exhibited humidity-responsive ionic conductivity Furthermore, it displayed electrofluorochromism. The emission switching between the two transition states (3MLCT/3LLCT and 3MMLCT) was based on the reversible changes of the interchain Pt-Pt interaction in polyPtC, which was caused by the secondary interaction or the crystalline-amorphous transition. The ionic conductivity of polyPtC was responsible for the humidity and the real-time humidity sensor with the polymer film was demonstrated on interdigitated Pt-electrodes. A solid-state electrochromic device with the polymer film was successfully fabricated to show reversible yellow-to-black electrochromism. In addition, it was revealed by the electrofluorochromic study that the pristine 3MLCT/3LLCT emission was quenched in the electrochem. reduced state (the black state), because the radical anion species of the ligand (tpy·-) generated at the neg. potential caused the repulsion among the polymer chains, expanded the Pt-Pt distance, and prevented the emission.

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Electric Literature of C8H12Cl2Pt. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Dichloro(1,5-cyclooctadiene)platinum(II), is researched, Molecular C8H12Cl2Pt, CAS is 12080-32-9, about Platinum(II) Complexes with Bis(pyrazolyl)borate Ligands: Increased Molecular Rigidity for Bidentate Ligand Systems. Author is Soellner, Johannes; Pinter, Piermaria; Stipurin, Sergej; Strassner, Thomas.

The structural motif of platinum(II) complexes bearing cyclometalating N-heterocyclic carbene ligands can be used to design deep-blue phosphors for application in organic light-emitting diodes. However, the photophys. properties of the resulting mols. are also highly dependent on the auxiliary ligand. These often allow mol. deformations in the excited state which contribute to non-radiative decay processes that diminish the attainable quantum yield. The use of bis(pyrazolyl)borate-based auxiliary ligands enforces a high mol. rigidity due to their unique geometry. The steric crowding in the coordination sphere inhibits deformation processes and results in highly efficient deep-blue platinum(II) emitters with CIE coordinates below (0.15; 0.15).

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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: 12080-32-9, is researched, Molecular C8H12Cl2Pt, about The importance of intramolecular conductivity in three dimensional molecular solids, the main research direction is macrocyclic semiconductor preparation crystal structure electron mobility conductivity.Computed Properties of C8H12Cl2Pt.

Recent years have seen tremendous progress towards understanding the relation between the mol. structure and function of organic field effect transistors. The metrics for organic field effect transistors, which are characterized by mobility and the on/off ratio, are known to be enhanced when the intermol. interaction is strong and the intramol. reorganization energy is low. While these requirements are adequate when describing organic field effect transistors with simple and planar aromatic mol. components, they are insufficient for complex building blocks, which have the potential to localize a carrier on the mol. Here, we show that intramol. conductivity can play a role in controlling device characteristics of organic field effect transistors made with macrocycle building blocks. We use two isomeric macrocyclic semiconductors that consist of perylene diimides linked with bithiophenes and find that the trans-linked macrocycle has a higher mobility than the cis-based device. Through a combination of single mol. junction conductance measurements of the components of the macrocycles, control experiments with acyclic counterparts to the macrocycles, and analyses of each of the materials using spectroscopy, electrochem., and d. functional theory, we attribute the difference in electron mobility of the OFETs created with the two isomers to the difference in intramol. conductivity of the two macrocycles.

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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.Formula: C6H3BrClNO2.Bromidge, Steven M.; Dabbs, Steven; Davies, David T.; Davies, Susannah; Duckworth, D. Malcolm; Forbes, Ian T.; Gaster, Laramie M.; Ham, Peter; Jones, Graham E.; King, Frank D.; Mulholland, Keith R.; Saunders, Damian V.; Wyman, Paul A.; Blaney, Frank E.; Clarke, Stephen E.; Blackburn, Thomas P.; Holland, Vicky; Kennett, Guy A.; Lightowler, Sean; Middlemiss, Derek N.; Trail, Brenda; Riley, Graham J.; Wood, Martyn D. published the article 《Biarylcarbamoylindolines Are Novel and Selective 5-HT2C Receptor Inverse Agonists: Identification of 5-Methyl-1-[[2-[(2-methyl-3-pyridyl)oxy]- 5-pyridyl]carbamoyl]-6-trifluoromethylindoline (SB-243213) as a Potential Antidepressant/Anxiolytic Agent》 about this compound( cas:16588-26-4 ) in Journal of Medicinal Chemistry. Keywords: biarylcarbamoyl indoline preparation structure 5HT2C agonist; antidepressant anxiolytic biarylcarbamoylindoline serotoninergic agonist. Let’s learn more about this compound (cas:16588-26-4).

The evolution, synthesis, and biol. activity of a novel series of 5-HT2C receptor inverse agonists are reported. Biarylcarbamoylindolines have been identified with excellent 5-HT2C affinity and selectivity over 5-HT2A receptors. In addition, (pyridyloxypyridyl)carbamoylindolines have been discovered with addnl. selectivity over the closely related 5-HT2B receptor. Compounds from this series are inverse agonists at the human cloned 5-HT2C receptor, completely abolishing basal activity in a functional assay. The new series have reduced P 450 inhibitory liability compared to a previously described series of 1-(3-pyridylcarbamoyl)indolines (Bromidge et al. J. Med. Chem. 1998, 41, 1598) from which they evolved. Compounds from this series showed excellent oral activity in a rat mCPP hypolocomotion model and in animal models of anxiety. On the basis of their favorable biol. profile, SB-228357 and SB-243213 have been selected for further evaluation to determine their therapeutic potential for the treatment of CNS disorders such as depression and anxiety.

From this literature《Biarylcarbamoylindolines Are Novel and Selective 5-HT2C Receptor Inverse Agonists: Identification of 5-Methyl-1-[[2-[(2-methyl-3-pyridyl)oxy]- 5-pyridyl]carbamoyl]-6-trifluoromethylindoline (SB-243213) as a Potential Antidepressant/Anxiolytic Agent》,we know some information about this compound(16588-26-4)Formula: C6H3BrClNO2, but this is not all information, there are many literatures related to this compound(16588-26-4).

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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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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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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

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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Discovery of Azetidinyl Ketolides for the Treatment of Susceptible and Multidrug Resistant Community-Acquired Respiratory Tract Infections, published in 2009-12-10, which mentions a compound: 77903-28-7, mainly applied to antibacterial azetidinyl ketolide preparation structure activity respiratory tract infection; crystal structure antibacterial azetidinyl ketolide preparation structure activity, Electric Literature of C7H10N2O.

Respiratory tract bacterial strains are becoming increasingly resistant to currently marketed macrolide antibiotics. The current alternative telithromycin (1) from the newer ketolide class of macrolides addresses resistance but is hampered by serious safety concerns, hepatotoxicity in particular. We have discovered a novel series of azetidinyl ketolides that focus on mitigation of hepatotoxicity by minimizing hepatic turnover and time-dependent inactivation of CYP3A isoforms in the liver without compromising the potency and efficacy of 1.

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