Month: April 2021

Related Products of 573-17-1, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 573-17-1, Name is 9-Bromophenanthrene, SMILES is BrC1=CC2=CC=CC=C2C2=C1C=CC=C2, belongs to naphthyridine compound. In a article, author is Matveev, P. I., introduce new discover of the category.

Testing a simple approach for theoretical evaluation of radiolysis products in extraction systems. A case of N,O-donor ligands for Am/Eu separation

In this paper, we studied the irradiation and ageing effect on the extraction properties of N, N’-diethyl-N, N’-di(p-hexylphenyl)-1,1′-phenantroline-4,7-dichloro-2,9-dicarboxamide (1) and 2,5,9,12-tetra(n-hexyl)benzo[f] quinolino-[3,4-b]-[1,7]-naphthyridine-6,8(5H,9H)-dione (2) towards Am(III) and Eu(III). DFT calculations were applied to estimate the probable ways of radiolysis for (1) and (2). Degradation products were identified by high-resolution ESI-MS. The interaction of (1) and (2) with the products of solvent radiolysis was established to be the most probable mechanism of ligand destruction.

Related Products of 573-17-1, The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 573-17-1 is helpful to your research.

Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem

Related Products of 179324-87-9, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 179324-87-9, Name is (R)-BoroLeu-(+)-Pinanediol trifluoroacetate, SMILES is CC1(C)[C@@]([H])(C2)C[C@]3([H])[C@](OB([C@H](CC(C)C)N)O3)(C)[C@]12[H].O=C(O)C(F)(F)F, belongs to naphthyridine compound. In a article, author is Chahal, Mandeep K., introduce new discover of the category.

1,8-Naphthyridinic fluorescent ‘turn-on’ and ‘turn-off’ chemosensors for detection of F- and Hg2+ ions mimicking INHIBIT molecular logic behaviour

Two new receptors viz. 2-bromoacetamido-5,7-dimethyl-1,8-naphthyridine (1a) and 2-chloroacetamido-5,7-dimethyl-1,8-naphthyridine (1b) containing 1,8-naphthyridine as fluorophore unit have been designed and synthesised. These receptors exhibited very high selectivity for F- ions among the various anions tested such as H2PO4-, OAc-, Cl-, Br-, I-, HSO4-, PF6-, ClO4-, BF4- and NO3- owing to anion-induced deprotonation of the amide NH by F- ions. Among the various cations tested (Na+, Ag+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+, Hg2+, Pb2+ and Mn3+), 1a exhibited selective detection of Hg2+ ions by binding with N1 and N8 atoms of the naphthyridine moiety. Receptor 1a has been explored as a dual-ion detector for F- and Hg2+ ions in two contrasting modes (fluorescence ‘turn-on’ and ‘turn-off’) which is supported by spectroscopic and lifetime measurements. 1a exhibited lower detection limits for F- (0.4 ppm) and Hg2+ (2.4 ppm) ions. These receptors were recovered from anionic species of 1a formed after addition of F- ions by treating with protic solvents such as CH3OH. The mode of binding was also confirmed by spectroscopic and DFT studies. The chemical inputs of F- and Hg2+ ions generate an output which satisfies the condition of two-input INHIBIT logic operators.

Related Products of 179324-87-9, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 179324-87-9 is helpful to your research.

Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem

In an article, author is Song, Geunmoo, once mentioned the application of 754-05-2, Product Details of 754-05-2, Name is Trimethyl(vinyl)silane, molecular formula is C5H12Si, molecular weight is 100.2343, MDL number is MFCD00008606, category is naphthyridine. Now introduce a scientific discovery about this category.

Aromatic Helical Foldamers as Nucleophilic Catalysts for the Regioselective Acetylation of Octyl beta-d-Glucopyranoside

Two indolocarbazole-naphthyridine foldamers 2 and 3 that fold into helical conformations were prepared. The 4-(N,N-dimethylamino)pyridine (DMAP) moiety was introduced at one end of the foldamer strands to develop foldamer-based catalysts for the site-selective acylation of polyols. These foldamers adopt helical conformations containing internal cavities capable of binding octyl beta-d-glucopyranoside. The association constants were determined to be 1.9 (+/- 0.1)x10(5) M-1 for 2 and 2.1 (+/- 0.1)x10(5) M-1 for 3 in CH2Cl2 at 25 degrees C. In the presence of DMAP, 2 or 3 as the catalysts, octyl beta-d-glucopyranoside was subjected to acetylation under identical reaction conditions. The DMAP-catalysed reaction afforded the random distribution of the monoacetylates (6-OAc : 4-OAc : 3-OAc : 2-OAc=33 : 24 : 41 : 2). In contrast, foldamers 2 and 3 led to the predominant formation of 6-OAc. The relative distributions were estimated to be 6-OAc : 4-OAc : 3-OAc=88 : 4 : 6 : similar to 0 with 2 and 6-OAc : 4-OAc : 3-OAc : 2-OAc=90 : 3 : 6 : 1 with 3.

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Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem

In an article, author is Moro, Artur J., once mentioned the application of 39156-41-7, Product Details of 39156-41-7, Name is 4-Methoxybenzene-1,3-diamine sulfate, molecular formula is C7H12N2O5S, molecular weight is 236.2456, MDL number is MFCD00012978, category is naphthyridine. Now introduce a scientific discovery about this category.

Aggregation induced emission of a new naphthyridine-ethynyl-gold(i) complex as a potential tool for sensing guanosine nucleotides in aqueous media

A new organometallic alkynyl-gold(i) complex capable of exhibiting aggregation induced emission was designed and synthesized. The linear complex structure possesses a central Au(i) atom, bearing two axial ligands: (1) 1,3,5-triaza-7-phosphaadamantane and (2) 2-acetamido-7-ethynyl-1,8-naphthyridine. While the former accounts for its partial solubility in an aqueous environment, the latter acts as a receptor unit for binding guanosine nucleotides and derivatives via multiple hydrogen bonding interactions. At high concentrations, aggregation of the complex was observed by the formation of new absorption (lambda(max) similar to 400 nm) and emission bands (550-700 nm). Formation of aggregates of ca. 60 nm diameter was confirmed by Small Angle X-ray Scattering (SAXS). Disruption of the aggregates in the presence of guanosine derivatives resulted in a ratiometric signal with apparent association constants in the order of 10(5) M-1 and high sensitivity (around 63% signal change) which are, to the best of our knowledge, in line with the highest values recorded for nucleotide sensors based on hydrogen bonding and capable of working in water. Computational studies indicate the presence of additional hydrogen bonding interactions that account for the strong binding of the Au(i) complex to phosphorylated guanosine nucleotides.

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Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem

Synthesis, optical characterization, and TD-DFT studies of novel mero/bis-mero cyanine dyes based on N-bridgehead heterocycles

Novel mero/bis-mero cyanine dyes based on N-bridgehead imidazo[1,2-g] quinolino[2,1-a][2,6] naphthyridine have been synthesized and characterized to evaluate intramolecular charge transfer (ICT) effect on the energy gap (E0-0). The UV-vis and emission spectral studies revealed that dyes are absorbed in the region of lambda(max) 485-577 nm and emitted at 567-673 nm. Their solvatochromic behavior in solvents of various polarities, CCl4, C6H6, H2O, CHCl3, acetone, and DMF, was studied to emphasize the effect of solvent polarity on the absorption maxima, molar extinction coefficients of the dyes, and excitation energy of the dyes. Their electron cloud delocalization in HOMO/LUMO levels were studied by DFT using Gaussian 09 software. Time-dependent density functional theory (TD-DFT) was applied to theoretically explore the first excitation energy (E0-0) of these dyes, which was in good agreement with experimental results.

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Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 1588-83-6, Name is 4-Amino-3-nitrobenzoic acid, SMILES is C1=C([N+]([O-])=O)C(=CC=C1C(=O)O)N, in an article , author is Tverdokhlebov, AV, once mentioned of 1588-83-6, Product Details of 1588-83-6.

Synthesis of furo[2,3-c]-2,7-naphthyridine derivatives via domino heterocyclization reaction

2-Amino-4-cyanomethyl-6-dialkylamino-3,5-pyridinedicarbonitriles were found to react with substituted oxiranes yielding 5,6-diamino-8-dialkylamino-1,2-dihydrofuro [2,3-c]-2,7-naphthyridine-9-carbonitriles. The oxirane ring was shown to be opened selectively from the unsubstituted side and further cyclization occurred with participation of 3-CN, but not 5-CN of the starting pyridines. The furonaphthyridines obtained were converted into 2-dialkylamino-5-methyl-9,10-dihydro-4H-furo[2,3-c]pyrimido[4,5,6-ij]-2,7-naphthyridine-l-carbonitriles and 2-dialkylamino-5,6,9,10-tetrahydro-4H-spiroffuro[2,3-c]pyrimido[4,5,6-ij]-2,7-naphthyridine-5,1′-cyclohexane}1-carbonitriles by treatment with acetic anhydride and cyclohexanone, respectively. The structure of prepared compounds was confirmed unambiguously by X-ray crystallographic study. (c) 2005 Elsevier Ltd. All rights reserved.

Interested yet? Read on for other articles about 1588-83-6, you can contact me at any time and look forward to more communication. Product Details of 1588-83-6.

Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem

In an article, author is Eweas, Ahmad F., once mentioned the application of 2835-95-2, Computed Properties of C7H9NO, Name is 5-Amino-2-methylphenol, molecular formula is C7H9NO, molecular weight is 123.15, MDL number is MFCD00043922, category is naphthyridine. Now introduce a scientific discovery about this category.

Synthesis, molecular docking of novel 1,8-naphthyridine derivatives and their cytotoxic activity against HepG2 cell lines

A series of novel 2,7-dimethyl-1,8-naphthyridine derivatives substituted with Mannich bases 2a-d, N-beta-glycosides 6a-e, 7a-e, Schiff’s bases 8a-c, pyrazolone 9, and S-alkylated derivatives 10a-c have been synthesized in good yields starting from 4-hydroxy-2,7-dimethyl-1,8-naphthyridine 1 through multi-step synthesis. The newly synthesized title compounds were evaluated for their HepG2 cell growth inhibition, the results revealed that all the tested compounds process inhibitory effects on the growth of HepG2 liver cancer cells. Compound 8b showed the highest inhibition activity against HepG2 cell line (IC50 equals 3.2 mu g/mL) among all tested compounds. The results were compared to 5-Fluorouracil (5-FU) and doxorubicin as reference drugs, (IC50 5 and 3.56 mu g/mL). Furthermore, molecular docking of compounds 3b, 6a, and 8b into the binding site of topoisomerase II was carried out. The results of the binding energy scores of these compounds were compared to the docking score of Vosaroxin, a known 1,8-naphthyridine derivative which is in clinical trials as potential anticancer drug. Compound 8b docking result revealed that it is the only tested compound that intercalate with DNA segment of the topoisomerase II, similar to Vosaroxin which was used as reference drug for docking comparison.

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Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 136-95-8, Name is Benzo[d]thiazol-2-amine, SMILES is NC1=NC2=CC=CC=C2S1, belongs to naphthyridine compound. In a document, author is Bhasker, G. Vijaya, introduce the new discover, Application In Synthesis of Benzo[d]thiazol-2-amine.

Synthesis, Antibacterial Activity, and Docking Studies of Some New 2-Substituted-1,8-naphthyridine Derivatives

1,8-Naphthyridine derivatives play a very important role in the field of medicinal chemistry. 2 series of novel 2-substituted-1,8-naphthyridine derivatives (10a-10k and 15a-15e) were synthesized. All the synthesized compounds were characterized by H-1 nuclear magnetic resonance (NMR), C-13 NMR, mass, and IR spectral analysis. Further, these compounds were evaluated for their antibacterial activity. Docking studies for these title compounds are also presented in this communication.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 136-95-8 is helpful to your research. Application In Synthesis of Benzo[d]thiazol-2-amine.

Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem

Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 38002-45-8, Name is (3-Bromoprop-1-yn-1-yl)trimethylsilane. In a document, author is Ye, Yunfeng, introducing its new discovery. Computed Properties of C6H11BrSi.

Synthesis and crystal structure of (1,8-naphthyridine-kappa N-2,N ‘)[2-(1H-pyrazol-1-yl)phenyl-kappa N-2(2),C-1]iridium(III) hexafluoridophosphate dichloromethane monosolvate

The solvated title salt, [Ir(C9H7N2)(2)(C8H6N2)]PF6 center dot CH2Cl2, was obtained from the reaction between 1,8-naphthyridine (NAP) and an orthometalated iridium(III) precursor containing a 1-phenylpyrazole (ppz) ligand. The asymmetric unit comprises one [Ir(ppz)(2)(NAP)](+) cation, one PF6- counter-ion and one CH2Cl2 solvent molecule. The central Ir-III atom of the [Ir(ppz)(2)(NAP)](+) cation is distorted-octahedrally coordinated by four N atoms and two C atoms, whereby two N atoms stem from the NAP ligand while the ppz ligands ligate through one N and one C atom each. In the crystal, the [Ir(ppz)(2)(NAP)](+) cations and PF6- counter-ions are connected with each other through weak intermolecular C-H center dot center dot center dot F hydrogen bonds. Together with an additional C-H center dot center dot center dot F interaction involving the solvent molecule, a three-dimensional network structure is formed.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 38002-45-8 help many people in the next few years. Computed Properties of C6H11BrSi.

Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 98796-51-1, Name is 5′-O-[Bis(4-Methoxyphenyl)phenylmethyl]-thymidine 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite], formurla is C40H49N4O8P. In a document, author is Patra, Sanjib K., introducing its new discovery. Quality Control of 5′-O-[Bis(4-Methoxyphenyl)phenylmethyl]-thymidine 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite].

Ligand assisted homolytic cleavage of the Ru-Ru single bond in [Ru-2(CO)(4)](2+) core and the chemical consequence

The Ru-Ru single bond in [Ru-2(CO)(4)(MeCN)(6)][BF4](2) remains intact in the reaction with 2-i-propyl-1,8-naphthyridine ((PrNP)-Pr-i) and the isolated product is the cis-[Ru-2((PrNP)-Pr-i)(2)(CO)(4)(OTf)(2)] (1) obtained via crystallization in the presence of [n-Bu4N][OTf]. The 2-t-butyl-1,8-naphthyridine ((BuNP)-Bu-t), on the contrary, leads to the oxidative cleavage of the Ru-Ru single bond resulting in the trans-[Ru((BuNP)-Bu-t)(2)(MeCN)(2)][BF4](2)[NC(Me)C(Me)N] (2). The anti-[NC(Me)C(Me)N](2-) is the product of the two-electron reductive coupling of two acetonitrile molecules. The phenoxo appendage in 2-(2-hydroxyphenyl)-1,8-naphthyridine (hpNP) brings the identical effect of the scission of the Ru-Ru bond but the process is non-oxidative and the product obtained is the cis-[Ru(hpNP)(2)(CO)(2)][BF4] (3). The bis-(diphenylphosphino)methane (dppm) in dichloromethane oxidatively cleave the Ru-Ru bond leading to chloro bridged [Ru(mu-Cl)(dppm)(CO)(MeCN)](2)[BF4](2) (4). All the complexes have been characterized by the spectroscopic and electrochemical measurements and their structures have been established by X-ray diffraction study. (c) 2006 Elsevier B.V. All rights reserved.

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Reference:
1,8-Naphthyridine – Wikipedia,
,1,8-Naphthyridine | C8H6N2 – PubChem