Category: 2213-63-0

In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Recommanded Product: 2213-63-0, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 2213-63-0, name is 2,3-Dichloroquinoxaline. In an article，Which mentioned a new discovery about 2213-63-0

In this paper, we report the successful synthesis of new 2-phenyl-3-substituted furo/thieno[2,3-b]quinoxaline derivatives from 2-chloro-3-methoxyquinoxaline and 2-chloro-3-(methylthio)quinoxaline by a three-step approach. The Sonogashira coupling reaction of the title compounds with terminal alkynes afforded 2-methoxy-3-(phenylethynyl)quinoxaline and 2-(methylthio)-3-(phenylethynyl)quinoxaline in good to excellent yields. The iodocyclization of the resulting compounds using ICl in CH2Cl2 afforded 3-iodo-2-phenylfuro[2,3-b]quinoxaline and 3-iodo-2-phenylthieno[2,3-b]quinoxaline. The subsequent palladium-catalyzed Sonogashira, Suzuki, and Heck reactions of the resulting iodo compounds led to the formation of 2,3-disubstituded furo/thieno[2,3-b]quinoxaline in high yields. All compounds were fully characterized by FT-IR, mass, 1H NMR, and 13C NMR spectral data. The synthesized quinoxaline derivatives were also screened against the two bacterial strains Escherichia coli and Micrococcus luteus.

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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1272 | ChemSpider

2213-63-0, Name is 2,3-Dichloroquinoxaline, belongs to quinoxaline compound, is a common compound. Application In Synthesis of 2,3-DichloroquinoxalineIn an article, once mentioned the new application about 2213-63-0.

The Knudsen mass-loss effusion technique was used to measure the vapor pressures at different temperatures of the following substituted quinoxalines: 2-hydroxyquinoxaline, between 383.17 K and 399.15 K; 2-hydroxy-3-methylquinoxaline, between 375.16 K and 391.15 K; 2,3-dichloroquinoxaline, between 313.15 K and 329.15 K; 2,3,6,7-tetrachloroquinoxaline, between 347.16 K and 361.17 K; 2,3-dimethylquinoxaline between 294.14 K and 308.14 K; 2,3-bis(bromomethyl)quinoxaline, between 351.14 K and 365.14 K. From the temperature dependence of the vapor pressure, the standard molar enthalpies of sublimation at the mean temperature of the experimental range were derived by the Clausius-Clapeyron equation. From these results the standard molar enthalpies, entropies, and Gibbs functions of sublimation at T = 298.15 K were calculated. An empirical equation for estimating vapor pressure-temperature data from enthalpies of sublimation values is presented.

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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1468 | ChemSpider

Application of 2213-63-0, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.2213-63-0, Name is 2,3-Dichloroquinoxaline, molecular formula is C8H4Cl2N2. In a Article，once mentioned of 2213-63-0

The synthesis of the quinoxaline-bridged resorcin[4]arene cavitand 1 was accomplished from 2-[3,5-di(tertbutyl)phenyl]acetaldehyde via formation of the intermediate octol 2. Such cavitands are known to occur in an open ‘kite’ conformation at low temperature (<213 K) but to adopt a 'vase' conformation at elevated temperatures (> 318 K). We discovered that protonation of cavitand 1 at room temperature by common acids, such as CF3COOH, also causes reversible switching from ‘vase’ to ‘kite’, and that this conformational change can be conveniently monitored by both 1H-NMR and UV/VIS spectroscopy.

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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1547 | ChemSpider

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments. Product Details of 2213-63-0. Introducing a new discovery about 2213-63-0, Name is 2,3-Dichloroquinoxaline

The condensation of 3-n-butyl-4-amino-5-mercapto-s-triazole 1 with chloroacetic acid, alpha-haloketones, benzoin, 2,3-dichloro-quinoxaline, carbon disulphide, aromatic carboxylic acids and aromatic carboxaldehydes furnished in one step, the cyclic products, 3-n-butyl 7H-s-triazolo [3,4-b] [1,3,4] thiadiazin-6 (5H)-one 2,6-aryl-3-n-butyl-7H-s-triazolo [3,4-b] [1,3,4] thiadiazines 3,3-n-butyl-6,7-diphenyl-5H-s-triazolo [3,4-b] [1,3,4] thiadiazine 4, 3-n-butyl-5H-s-triazolo [3′,4′:2,3] [1,3,4] thiadiazino [5,6-b] quinoxaline 5,3-n-butyl-s-triazolo [3,4-b] [1,3,4] thiadiazole-6 (5H)-thione 6, 3-n-butyl-6-aryl-s-triazolo [3,4-b] [1,3,4]-thiadiazoles 7 and 6-aryl-5,6-dihydro-3-n-butyl-s-triazolo [3,4-b] [1,3,4] thiadiazoles 8 respectively. The compounds have been characterized on the basis of elemental analysis and spectral data. The antibacterial and antifungal activity of some of the compounds have also been evaluated.

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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1464 | ChemSpider

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, Computed Properties of C8H4Cl2N2, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 2213-63-0, Name is 2,3-Dichloroquinoxaline, molecular formula is C8H4Cl2N2

Two chelating-amino-functionalized lanthanide metal-organic frameworks, Er-DADQ and Eu-DADQ, were synthesized with a flexible dicarboxylate ligand based on quinoxaline (H2DADQ = N,N?-dibenzoic acid-2,3-diaminoquinoxaline). N2 adsorption indicates that they exhibit a stable microporous framework with a BET surface area of 136.78 m2 g-1. CO2 adsorptions have also been studied at different temperatures. The amino groups in the MOFs enhanced the uptake of RhB with COOH groups. RhB-MO and RhB-CV separations have also been successfully conducted. The MOFs act as efficient Lewis acid catalysts for the cyanosilylation of aldehydes and ketones in high yields in a short reaction time due to the higher Lewis acidity and open sites of the metal ions after activation. This journal is

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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1617 | ChemSpider

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments. name: 2,3-Dichloroquinoxaline. Introducing a new discovery about 2213-63-0, Name is 2,3-Dichloroquinoxaline

Herein, we report the synthesis of different steroidal thiazolo quinoxaline derivatives as antibacterial agents against Escherichia coli. Steroidal ketone thiosemicarbazones (4-6) were obtained from corresponding ketones (1-3) by refluxing with thiosemicarbazide. The thiosemicarbazones on reaction with 2,3-dichloroquinoxalines at 80 C gives 3beta-acetoxy-5alpha-cholestan-6-[thiazolo(4,5-b)quinoxaline-2-yl-hydrazone] (7), 3beta-chloro-cholestan-6-[thiazolo(4,5-b)quinoxaline-2-yl-hydrazone] (8), and 5alpha-cholestan-6-[thiazolo(4,5-b)quinoxaline-2-yl-hydrazone] (9). The structures of the compounds were evident by elemental, IR, 1H NMR and FAB mass spectral analyses. The antibacterial activities of these compounds were evaluated by disk diffusion method against the culture of E. coli and the results were compared with the standard drug amoxicillin. The results reveal that the compounds are better antibacterial agents as compared to amoxicillin. Among all the three compounds (7-9), compound 8 showed better zone of inhibition.

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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1399 | ChemSpider

Application of 2213-63-0, 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. 2213-63-0, Name is 2,3-Dichloroquinoxaline, molecular formula is C8H4Cl2N2. In a Article，once mentioned of 2213-63-0

A series of novel 2-arylamino-3-(arylsulfonyl)quinoxalines was synthesized through a newly developed approach. All synthesized target compounds were screened for their cytotoxicities against cancer cell lines including PC3, A549, HCT116, HL60 and KB. Representative compounds with favorable cytotoxicities were tested for their PI3Kalpha inhibitory activities. Among the synthesized target compounds, 17 (PI3Kalpha IC50: 0.07 muM) displayed the most potent cellular activities (IC50 values of 0.14 muM, 0.07 muM, 0.95 muM and 0.05 muM against PC3, A549, HCT116 and HL 60, respectively).

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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1601 | ChemSpider

Related Products of 2213-63-0, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 2213-63-0, Name is 2,3-Dichloroquinoxaline,introducing its new discovery.

Several dyes derived from 5,12-dihydroquinoxalino[2,3b]quinoxaline have been synthesised and evaluated as sensitizers for alkoxypyridinium salt photodecomposition. The results are discussed on the basis of the free energy change for electron transfer from fluoflavin dyes to alkoxypyridinium compounds. The mechanism of dye photobleaching is supported by DFT calculations, spectroscopic characterization of the cation radical of the dye, and the quantum yields of sensitised proton formation. Fluoflavin dyes are shown to be useful as photoinitiators for sensitizing compounds to photooxidation. Photoredox pairs consisting of fluoflavin dyes and alkoxypyridinium salt are found to be effective initiation systems for free radical polymerization of methyl acrylate and trimethylolpropane triacrylate (TMPTA) using VIS light.

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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1504 | ChemSpider

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments. Formula: C8H4Cl2N2. Introducing a new discovery about 2213-63-0, Name is 2,3-Dichloroquinoxaline

The invention proyides novel compositions comprising imidazoquinoxaline compounds of formula (I) and analogs thereof. Also provided are methods of administering the compositions in an effective amount to enhance the immune response of a subject. Further provided are novel compositions and methods of administering the compositions in combination with (an) other agent (s).

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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1189 | ChemSpider

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments. SDS of cas: 2213-63-0. Introducing a new discovery about 2213-63-0, Name is 2,3-Dichloroquinoxaline

Abstract: Synthesis of 2,3-disubstituted 1-alkylpyrrolo[2,3-b]quinoxalines was accomplished through the reaction of 3-chloroquinoxalin-2-amines with internal alkynes in the presence of Pd(OAc)2, NaOAc, and KOtBu in DMSO. This method afforded desired pyrrolo[2,3-b]quinoxalines in 65?92% reaction yields. The minimum inhibition concentration and minimum bactericidal concentration determinations against Micrococcus luteus and Pseudomonas aeruginosa revealed that some of the synthesized compounds showed the same values compared to tetracycline. These compounds could be used in the future research for the development of new antibiotics. Graphical Abstract: [Figure not available: see fulltext.].

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Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1392 | ChemSpider