Tag: M.W:100-200

Electric Literature of 15804-19-0, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Article, and a compound is mentioned, 15804-19-0, Quinoxaline-2,3(1H,4H)-dione, introducing its new discovery.

Complexes [Fe2(mu-S2Ar)(CO)6] (S2Ar) = benzene-1,2-dithiolate (1a) toluene-3,4-dithiolate (2a), 3,6-dichloro-1,2-benzenedithiolate (3a), quinoxaline-2,3-dithiolate (7a) have been prepared to investigate the electronic effect that different bridging arenedithiolate ligands have on the appended Fe2(CO)6 sites. Dinuclear complexes [Fe2(mu-S2Ar)(CO)4(PMe3)2] (1-3,7)b and mononuclear complexes [Fe(S2Ar)(CO)2(PMe3)2] (1-3,7)c were synthesized from their parent hexacarbonyl complexes (1-3,7)a. IR spectroscopic, crystallographic and electrochemical analyses show that an increase of the electron-withdrawing character (where quinoxaline-2,3-dithiolate > 3,6-dichloro-1,2-benzenedithiolate > 1,2-benzenedithiolate ? toluene-3,4-dithiolate) of the bridging ligand leads to a decreased electron density at the iron centers, which yield a milder reduction potential and higher eCO stretching frequencies. This effect is coherent for all of the investigated complexes. Electrocatalytic proton reduction by complex 3a (with trifluoromethanesulfonic acid) was evidenced by cyclic voltammetry. As a result of the milder reduction potential of 3a itself, proton reduction that is promoted by 3a proceeds at a potential that is milder than that for the 1a-catalyzed process.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Electric Literature of 15804-19-0. In my other articles, you can also check out more blogs about 15804-19-0

Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N391 | ChemSpider

Electric Literature of 6298-37-9, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Patent, and a compound is mentioned, 6298-37-9, Quinoxalin-6-amine, introducing its new discovery.

Compounds having the general structure and compositions containing them, for the treatment of acute, inflammatory and neuropathic pain, dental pain, general headache, migraine, cluster headache, mixed-vascular and non-vascular syndromes, tension headache, general inflammation, arthritis, rheumatic diseases, osteoarthritis, inflammatory bowel disorders, inflammatory eye disorders, inflammatory or unstable bladder disorders, psoriasis, skin complaints with inflammatory components, chronic inflammatory conditions, inflammatory pain and associated hyperalgesia and allodynia, neuropathic pain and associated hyperalgesia and allodynia, diabetic neuropathy pain, causalgia, sympathetically maintained pain, deafferentation syndromes, asthma, epithelial tissue damage or dysfunction, herpes simplex, disturbances of visceral motility at respiratory, genitourinary, gastrointestinal or vascular regions, wounds, burns, allergic skin reactions, pruritis, vitiligo, general gastrointestinal disorders, gastric ulceration, duodenal ulcers, diarrhea, gastric lesions induced by necrotising agents, hair growth, vasomotor or allergic rhinitis, bronchial disorders or bladder disorders.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Electric Literature of 6298-37-9. In my other articles, you can also check out more blogs about 6298-37-9

Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N51 | ChemSpider

Electric Literature of 15804-19-0, 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. 15804-19-0, Name is Quinoxaline-2,3(1H,4H)-dione, molecular formula is C8H6N2O2. In a Article，once mentioned of 15804-19-0

The reaction of 3-methoxycarbonylmethylene-2-oxo-1,2,3,4-tetrahydroquinoxaline (Ia) with m-chloroperbenzoic acid gave 3-(1-hydroxy-1-methoxycarbonyl)methylene-2-oxo-1,2,3,4-tetrahydroquinoxaline and 2,3-dioxo-1,2,3,4-tetrahydroquinoxaline.The equilibrium between the tetrahydro form (Ia type) and the dihydro form (Ib type) was exhibited, together with the 1HNMR data.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Electric Literature of 15804-19-0. In my other articles, you can also check out more blogs about 15804-19-0

Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N348 | ChemSpider

Reference 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 gold-catalyzed annulation of diethynyl N-heterocycles for the synthesis of quinoxaline-/phenazine-based pentalenes and the study of their optoelectronic properties are described. The inhibition of the gold catalyst by the nitrogen centers in the substrate and the product could be overcome by increasing the reaction temperature to 130 C, which usually leads to catalyst decomposition in gold catalysis. At 130 C, 6,7-di(arylethynyl)quinoxalines in chlorobenzene give the corresponding pentalenes. The annulation of 2,3-di(arylethynyl)quinoxalines requires an even higher temperature under microwave irradiation. The quinoxaline-based pentalenes showed lower LUMO levels compared to the corresponding naphthalene-based pentalenes.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 2213-63-0

Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1539 | ChemSpider

2213-63-0, Name is 2,3-Dichloroquinoxaline, belongs to quinoxaline compound, is a common compound. COA of Formula: C8H4Cl2N2In an article, once mentioned the new application about 2213-63-0.

We describe the synthesis and characterization of novel iptycene-substituted azaacenes by using either a classic condensation route (diamine plus ortho-quinone) and/or a Pd-catalyzed coupling of an aromatic diamine with an aromatic dihalide. The attachment of an iptycene unit leads to a significant blueshift (15 nm) in the UV/Vis spectra of these azaacenes. The iptycene unit stabilizes a hexaazahexacene with a lambdamax absof 833 nm. By employing 5,6-diamino(benzothiadiazole) as a synthon for tetraaminobenzene, we could prepare the symmetrical bis-triptycene-substituted tetraazapentacene in high yields.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1274 | ChemSpider

Chemistry is traditionally divided into organic and inorganic chemistry. Formula: C8H5N3O2, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 18514-76-6

A new and intriguing methodology to access various O-difluoromethylation oxime compounds from ClCF2H, TBN and indoles is developed under mild reaction conditions. This strategy can suppress N-difluoromethylation of indoles successfully, in which there are two different active species (:CF2 and ·NO) while indoles are unprotected, featuring simple operation and radical involvement.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N882 | ChemSpider

Chemistry is traditionally divided into organic and inorganic chemistry. Safety of Quinoxaline-6-carbaldehyde, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 130345-50-5

6-O-Carbamoyl ketolide antibacterials of the formula: wherein R1, R2, R3, R4, R5, R6, X, X?, Y, and Y? are as described herein and in which the substituents have the meaning indicated in the description. These compounds are useful as antibacterial agents.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N213 | ChemSpider

In heterogeneous catalysis, the catalyst is in a different phase from the reactants. name: Quinoxaline-2,3(1H,4H)-dione, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 15804-19-0, name is Quinoxaline-2,3(1H,4H)-dione. In an article，Which mentioned a new discovery about 15804-19-0

A simple and efficient method has been developed for the synthesis of series of N-Mannich bases of (E)-3- (phenylimino/4-chlorophenylimino)-2,3- dihydro-1-[(N-substituted piperazinyl) methyl]quinoxaline-2-(1H)-one 3a-f and 4a-f. The requisite 2a and 2b were obtained by reactionbetween quinoxaline-2,3-dione 1 and aniline / p-chloroaniline. These compounds underwent NMannich reaction with various substituted piperazines to yield (title compounds 3a-f and 4a-f respectively. Structures of synthesized compounds were confirmed by spectral studies (IR, 1H NMR, 13C NMR and Mass) and elemental analysis. All the synthesized compounds were screened for in vitro leptospirocidal activty against Leptospira interrogans. The potent compounds 4a, 4b and 4c which showed maximum activity during in vitro studies were subjected to in vivo studies. The inhibitory activity of enzymes carboxypeptidase and transpeptidase, in leptospirosis by the synthesized compounds were determined. 3D-QSAR studies model developed showed the need for more hydrophobic and less steric groups as substituent groups to enhance the in vitro activity.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N381 | ChemSpider

Synthetic Route of 1448-87-9, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.1448-87-9, Name is 2-Chloroquinoxaline, molecular formula is C8H5ClN2. In a Article，once mentioned of 1448-87-9

A simple and rapid method for the preparation of a series of novel quinoxaline derivatives in the presence of Ag+ is reported.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 1448-87-9

Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N566 | ChemSpider

Reference of 18671-97-1, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.18671-97-1, Name is 2,6-Dichloroquinoxaline, molecular formula is C8H4Cl2N2. In a article，once mentioned of 18671-97-1

[Problem] new ketone or oxime compound, containing the chemicals, in particular of the herbicide. (1) A compound of the formula [a]. [In the formula, a represents B B-a 1 or B-a 2, Q is an oxygen atom or NOR7 Represents a, represents a hydrogen atom or the like is A, R6 C is1 – C6 Alkyl represents e.g., R7 C is1 – C6 Alkyl represents e.g., R8A And R9A C represents hydrogen atom or1 – C6 Represents an alkoxycarbonyl, R8B And R9B Represents a hydrogen atom, Z4 C is1 – C6 Alkyl represents e.g., Z7 The a-OR41 Represents a, R41 The D3 – 18a of the heterocycle. ] Ketone or oxime compound expressed herbicide containing them. [Drawing] no (by machine translation)

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 18671-97-1

Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1642 | ChemSpider