Month: September 2021

New Advances in Chemical Research, May 2021. In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Synthetic Route of 6298-37-9, We’ll be discussing some of the latest developments in chemical about CAS: 6298-37-9, name is Quinoxalin-6-amine. In an article，Which mentioned a new discovery about 6298-37-9

We report the preparation of novel 1,4,8-triazaphenanthrenes and show that the target compounds are efficiently obtained from the corresponding 6-aminoquinoxalines after N-propargylation followed by copper-catalyzed 6-endo-dig cycloisomerization and aromatization. The cyclization was found to be completely regioselective.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N98 | ChemSpider

Synthetic Route of 82031-32-1, New Advances in Chemical Research in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 82031-32-1, Name is 7-Bromoquinoxalin-2(1H)-one, molecular formula is C8H5BrN2O. In a article，once mentioned of 82031-32-1

This invention relates to newly identified compounds for inhibiting hYAK3 proteins and methods for treating diseases associated with hYAK3 activity.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1784 | ChemSpider

New Advances in Chemical Research, May 2021. In heterogeneous catalysis, catalysts provide a surface to which reactants bind in a process of adsorption. Recommanded Product: 3,4-Dihydroquinoxalin-2(1H)-one, In a article, mentioned the application of 59564-59-9, Name is 3,4-Dihydroquinoxalin-2(1H)-one, molecular formula is C8H8N2O

The electrochemical reduction of fluoflavine 2 gives compound 9 to which we had previously assigned a hexahydro-quinoxalino<2,3-b>quinoxaline structure.A crystallographic study of a diacetylated derivative of 9 shows that 9 is in fact 2-(o-aminoanilinomethyl)benzimidazole.This result permits us to propose a detailed reduction mechanism for 2 and its diacetyl derivative 25.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N152 | ChemSpider

New Advances in Chemical Research, May 2021. The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing theoretical assessments of solvent structures and their interactions with reaction intermediates. Reference of 18671-97-1, We’ll be discussing some of the latest developments in chemical about CAS: 18671-97-1, name is 2,6-Dichloroquinoxaline. In an article，Which mentioned a new discovery about 18671-97-1

A process for the preparation of 2-chloro-6-haloquinoxaline compounds from the corresponding 4-halo-2-nitroaniline utilizing four reaction steps with generally compatible solvents and reagents with volatile by-products to minimize the isolation and purification of intermediates has been developed.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1631 | ChemSpider

Electric Literature of 1448-87-9, New Advances in Chemical Research in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 1448-87-9, Name is 2-Chloroquinoxaline, molecular formula is C8H5ClN2. In a article，once mentioned of 1448-87-9

Compounds of formula (I) STR1 wherein R1, R2, R3, R4 and R5 are independently hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, alkylcycloalkyl, halogen, haloalkyl, alkoxy, alkenoxy, alkoxyalkyl, haloalkoxy, alkylthio, cyano, nitro, amino, NR7 R8, hydroxy, acylamino, –CO2 R6, phenyl, phenoxy, benzyl or benzyloxy, the phenyl group or phenyl moiety of the benzyl group being optionally substituted; or R2 and R3 when taken together form a 5- or 6-membered ring; R6 and R8 are hydrogen or C1-4 alkyl; R7 is C1-4 alkyl; and n is 0, 1 or 2: and compositions thereof, are useful for killing or controlling nematodes.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N472 | ChemSpider

Electric Literature of 59564-59-9, New Advances in Chemical Research in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 59564-59-9, Name is 3,4-Dihydroquinoxalin-2(1H)-one, molecular formula is C8H8N2O. In a article，once mentioned of 59564-59-9

Compounds of Formula (I) wherein R1, R2 R3, R4, R5, R6, and X are as defiend herein for Formula (IA) and Formula (IB), or a tautomer, prodrug, solvate, or salt thereof; pharmaceutical compositions containing such compounds, and methods of modulating the glucocoricoid receptor function and methods of treating disease-states or conditions mediated by the glucocorticoid receptor function or characterized by inflammatory, allergic, or proliferative processes in a patient using these compounds.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N134 | ChemSpider

New Advances in Chemical Research, May 2021. The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing theoretical assessments of solvent structures and their interactions with reaction intermediates. Reference of 148231-12-3, We’ll be discussing some of the latest developments in chemical about CAS: 148231-12-3, name is 5,8-Dibromoquinoxaline. In an article，Which mentioned a new discovery about 148231-12-3

PROBLEM TO BE SOLVED: near infrared light more efficient use of the available for absorbing near-infrared light of a long wavelength region to provide a new light-absorbing material. SOLUTION: represented by the general formula I […] deriv.. (Ar 1 and Ar 2 each independently, and may have a substituent hereoaryl group; R a-R d each independently, a hydrogen atom or a substituent group may have a straight-chain or branched-chain carbon number 1-8 alkoxy group; B 1 and B 2 are each independently hydrogen or […] group may have a substituent selected from the group consisting of a base, however, B 1 and B 2 least one and may have a substituent […] group) selected drawing: no (by machine translation)

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2019 | ChemSpider

New Advances in Chemical Research, May 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry.Safety of 2,6-Dichloroquinoxaline, In a article, mentioned the application of 18671-97-1, Name is 2,6-Dichloroquinoxaline, molecular formula is C8H4Cl2N2

The isoxazolo<2,3-a>quinoxalines 11a,b and pyrrolo<1,2-a>quinoxalines 12a,b were selectively synthesized from the 2-substituted 6-chloroquinoxaline 4-oxides 10a,b.The pyrrolo<1,2-a>quinoxalines 12a,b were clarified to be produced by the ring transformation of the isoxazolo<2,3-a>quinoxalines 11a,b.The pyrrolo<1,2-a>quinoxalines 14a,b were obtained from both 2,6-dichloroquinoxaline 4-oxide 9 and compounds 12a,b.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N1669 | ChemSpider

New Advances in Chemical Research, May 2021. In heterogeneous catalysis, catalysts provide a surface to which reactants bind in a process of adsorption. name: 3,4-Dihydroquinoxalin-2(1H)-one, In a article, mentioned the application of 59564-59-9, Name is 3,4-Dihydroquinoxalin-2(1H)-one, molecular formula is C8H8N2O

(4RS)-1-(5-Cyclopropyl-1,2,4-oxadiazol-3-yl)-12,12a-dihydroimidazo<1,5-a>pyrrolo<2,1-c>quinoxalin-10(11H)-one (1a), 5-benzoyl-3-(5-cyclopropyl-1,2,4-oxadiazol-3-yl)-4,5-dihydroimidazo<1,5-a>quinoxaline (13b), and tert-butyl (4S)-12,12a-dihydroimidazo<1,5-a>pyrrolo<2,1-c>quinoxaline-1-carboxylate (1e), as well as other imidazo<1,5-a>quinoxaline amides and carbamates, represent a new series of compounds which bind with high affinity to the GABAA/benzodiazepine receptor.These compound exhibit a wide range of intrinsic efficacies as measured by <35S>TBPS binding ratios.The synthesis of 1a begins with the addition of DL-glutamic acid to 1-fluoro-2-nitrobenzene, followed by reduction of the nitro group and subsequent ring closure to form 3-(carbethoxymethyl)-1,2,3,4-tetrahydroquinoxalin-2-one, followed by a second ring closure to afford (4RS)-1,5-dioxo-1,2,3,4,5,6-hexahydropyrrolo<1,2-a>quinoxaline as the key intermediate.Appendage of a substituted imidazo ring via the anion of 5-cyclopropyl-1,2,4-oxadiazol-3-yl gives 1a.The (-) and (+)-isomers of 1a were prepared from 1-fluoro-2-nitrobenzene and L- and D-glutamic acid, respectively. 1a and its enantiomers demonstrated affinity for <3H>flunitrazepam binding site with Ki’s of 0.87, 0.62, and 0.65 nM, respectively.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N190 | ChemSpider

New Advances in Chemical Research, May 2021. In heterogeneous catalysis, catalysts provide a surface to which reactants bind in a process of adsorption. Formula: C8H6N2O2, In a article, mentioned the application of 15804-19-0, Name is Quinoxaline-2,3(1H,4H)-dione, molecular formula is C8H6N2O2

The treatment of the diethyl ester of o-phenylenebis(oxamic acid) (opbaH2Et2) with 2/3 of an equivalent of MeNH2 in MeOH does not result in the formation of the methyl ester of o-phenylene(N?-methyloxamide)(oxamic acid) (opooH3Me, 1) in pure state, as reported previously. The colourless crude material formed by this reaction was confirmed to be composed of 1 (89% content), the dimethyl ester of o-phenylenebis(oxamic acid) (opbaH2Me2, 2, 6%), 1,4-dihydro-2,3-quinoxalinedione (3, 3%) and o-phenylenebis(N?- methyloxamide) (opboH4Me2, 4, 1%), respectively. The identities of 1-4 have been verified by IR, 1H and 13C NMR spectroscopy as well as elemental analysis. In addition, the solid state structures of 1 and 2·2DMSO, respectively, were determined by single-crystal X-ray diffraction studies. Successive recrystallization of the crude material from MeOH and MeOH : THF (1 : 1), respectively, does not give pure 1, but a mixture of 1 and 2. It is shown further that out of this mixture pure bis(oxamato) complexes cannot be obtained, as previously reported. Instead, treatment of the mixture with NiII or CuII salts, followed by the addition of [nBu4N]OH, results in the formation of two mixtures of [nBu4N]2[Ni(opba)] (5) and [nBu4N]2[Ni(opooMe)] (6) as well as [nBu4N]2[Cu(opba)] (7) and [nBu 4N]2[Cu(opooMe)] (8), respectively. The simultaneous formation of 5/6 and 7/8, respectively, has been verified by crystallization of the obtained mixtures and X-ray diffraction studies of the obtained single crystals. Co-crystallization of mixtures of 5/6 (99 mass%) and 7/8 (1 mass%), respectively, results in the formation of single-crystals of diamagnetically diluted 7 in the host lattice of 5 (7@5) accompanied by single-crystal formation of diamagnetically diluted 8 in the host lattice of 6 (8@6), as verified by EPR spectroscopy. It is finally shown that the ethyl ester of o-phenylene(N?- methyloxamide)(oxamic acid) (opooH3Et, 9), a homologue of 1, can be obtained in pure state by the treatment of opbaH2Et2 with 5/6 of an equivalent of MeNH2 in EtOH. The Royal Society of Chemistry 2013.

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Reference：
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N286 | ChemSpider