Category: naphthyridine

Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. In an article, author is Wang, Ming-Shu, once mentioned the application 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, Product Details of 39156-41-7.

Synthesis and biological evaluation of new MET inhibitors with 1,6-naphthyridinone scaffold

A potent and novel MET inhibitor, 5-((4((2-amino-3-chloropyridin-4-yl)oxy)-3-fluorophenyl)amino)-3-(4-fluorophenyl)-1,6-naphthyridin-4(1H)-ones (8), was designed and synthesized via a scaffold-hopping strategy of a 2,7-naphthyridinone MET kinase inhibitor 7. Lead compound 8 had good potency (IC50 of 9.8 nM), but unfavorable pharmacokinetic profiles (F = 12%, CL = 5.0 L/h/kg). Systematic structural optimization of compound 8 resulted in 9g (MET, IC50 – of 9.8 nM) with a comparable MET potency to that of compound 2 and a favorable pharmacokinetic profile (F= 63%, CL = 0.12 L/h/kg). Further study of the derivatization of N(1) amine group of 9g led to the discovery of 23a with good MET potency (IC50 of 7.1 nM), promising VEGFR-2 selectivity (3226-fold), and a markedly drug-likeness improvement (F= 57.7%, CL = 0.02 L/h/kg). The excellent VEGFR-2 selectivity and favorable drug-likeness of 23g suggest that the 1,6-naphthyridine moiety could be used as a new scaffold for kinase inhibitor discovery. (C) 2019 Elsevier Masson SAS. All rights reserved.

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

In an article, author is Mogilaiah, K., once mentioned the application of 1689-64-1, Recommanded Product: 1689-64-1, Name is 9H-Fluoren-9-ol, molecular formula is C13H10O, molecular weight is 182.22, MDL number is MFCD00001135, category is naphthyridine. Now introduce a scientific discovery about this category.

AN EFFICIENT SYNTHESIS OF 2-(2-SUBSTITUTED [1,8] NAPHTHYRIDIN-3-YL)-5-(SUBSTITUTED 2-FURYL)-1,3,4-OXADIAZOLES USING PhI(OAc)(2)-Al2O3 IN THE SOLID STATE AND EVALUATION OF THEIR BIOLOGICAL ACTIVITY

A simple and eco-friendly method for the synthesis of 2-(2–substituted [1,8] naphthyridin-3-yl),5-(substituted 2-furyl)-1,3,4-oxadiazoles 4 has been developed by the oxidation of the corresponding N3-[1-(5-nitro-2-furyl) methylidene]-2-methyl [1,8] naphthyridine-3-carbohydrazide 3 with alumina-supported iodobenzene diacetate [PhI(OAc)(2)-Al2O3] the solid state at RT under grinding conditions. The structural assignments of compounds 3 and 4 are based on their elemental analyses and spectral (IR, H-1 NMR and MS) data. The compounds 4 have been tested for their antibacterial and anti-inflammatory activities.

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

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , HPLC of Formula: C20H25N3O, 3147-75-9, Name is 2-(2H-Benzo[d][1,2,3]triazol-2-yl)-4-(2,4,4-trimethylpentan-2-yl)phenol, molecular formula is C20H25N3O, belongs to naphthyridine compound. In a document, author is Wu, Yun-Ying, introduce the new discover.

Large Stokes Shift Induced by Intramolcular Charge Transfer in N,O-Chelated Naphthyridine-BF2 Complexes

Novel N,O-chelated naphthyridine-BF2 complexes with push-pull structures have been synthesized and characterized. Spectral investigations on these complexes reveal that photoinduced intramolecular charge transfer occurs and results in a large Stokes shift, which is further supported by density functional theory based theoretical calculations,

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 3147-75-9. HPLC of Formula: C20H25N3O.

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. 3491-12-1, Name is 4-[4-(4-aminophenoxy)phenoxy]aniline, formurla is C18H16N2O2. In a document, author is Narender, Atmakuri, introducing its new discovery. SDS of cas: 3491-12-1.

Synthesis and Antimicrobial Activity of Pyrazole Derivatives of 2-Cyclopropyl-1,8-naphthyridines

2-Amino-pyridine-3-carboxaldehyde and 3-cyclopropyl-3-oxopropionic acid ethyl ester react each other to provide 2-cyclopropyl-[1,8]-naphthyridin-3-carboxylic acid ethylester (1) which reacts with 99 % hydrazine hydrate to yield 2-cyclopropyl-[1,8]-naphthyridine-3-carboxylic acid hydrazide (2). This acid hydrazide (2), reacts with different acetophenones to yield respective Schiff bases (3a-h). Compounds 3a-h react with Vilsmeier-Haack reagent (DMF/POCl3) to furnish 1-(2-cyclopropyl-[1,8]-naphthyridine-3-carbonyl)-3-phenyl-1H-pyrazole-4-carbaldehydes (4a-h). 2-Cyclopropyl-[1,8]-naphthyridine-3-carboxylic acid hydrazide (2) on reaction with substituted acetylacetones and substituted ethyl acetoacetates gives substituted 2-cyclopropyl-[1,8]-napthyridin-3-yl)-(3,5-dimethyl-pyrazol-1-yl)-methanones (5a-d) and 2-(2-cyclopropyl-[1,8]-naphthyridine-3-carbonyl)-5-methyl-2,4-dihydropyrazol-3-ones (6a-c), respectively. On the other hand, hydrazide (2) reacts with different aromatic aldehydes yields 2-cyclopropyl-[1,8]-naphthyridine-3-carboxylic acid benzylidene-hydrazides (7a-g). Compounds (7a-g) on reaction with mercapto-acetic acid offered 3-[(2-cyclopropyl-[1,8]-naphthyridin-3-yl-methyl)aminolphenyl-thiazolidin-4-ones (8a-g). Interaction of acid hydrazide (2) with different aromatic acid chlorides afford N’-acetyl/benzoyl-2-cyclopropyl-1,8-naphthyridine-3-carbohydrazides (9a-d), which on treatment with POCl3 yield 2-cyclopropyl-[1,8]-haphthytidin-3-yl)-(5-phenyl-[1,3,4]-oxadiazol-2-yl)methanone (10a-d).

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

Application of 99-09-2, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, 99-09-2, Name is 3-Nitroaniline, SMILES is NC1=CC=CC([N+]([O-])=O)=C1, belongs to naphthyridine compound. In a article, author is Umar, Shahida, introduce new discover of the category.

A Tetraphenylethene-Naphthyridine-Based AIEgen TPEN with Dual Mechanochromic and Chemosensing Properties

Synthesis of new tetraphenylethene (TPE) conjugates via an innocuous route led to the revelation of a unique TPE-based aggregation-induced emissive fluorogen 3 (TPEN), which showed an interesting mechanochromic property when the emission was changed from blue to green upon grinding and green to blue upon fuming. The mechanochromic property of TPEN has been explored to prepare ink-free rewritable paper for security documentation. A detailed photophysical investigation of the TPE-naphthyridine scaffold led to the discovery of its high sensitivity to silver ions (Ag+) over other metal ions with a detection limit of 0.25 ACM in an aqueous system. The stoichiometry of the complex of TPEN and silver ion was established to be 2:1 (TPEN:Ag+) on the basis of photophysical studies, mass analysis, and high-resolution mass spectrometry analysis.

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

In an article, author is Behlen, Michael J., once mentioned the application of 1588-83-6, Formula: C7H6N2O4, Name is 4-Amino-3-nitrobenzoic acid, molecular formula is C7H6N2O4, molecular weight is 182.1335, MDL number is MFCD00017009, category is naphthyridine. Now introduce a scientific discovery about this category.

Dinuclear oxidative addition reactions using an isostructural series of Ni-2, Co-2, and Fe-2 complexes

A family of low-valent Ni-2, Co-2, and Fe-2 naphthyridine-diimine (NDI) complexes is presented. Ligand-based pi* orbitals are sufficiently low-lying to fall within the metal 3d manifold, resulting in electronic structures that are highly delocalized across the conjugated [NDI]M-2 system. This feature confers stability to metalmetal interactions during two-electron redox reactions, as demonstrated in a prototypical oxidative addition of allyl chloride.

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

Synthetic Route of 89343-06-6, 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. 89343-06-6, Name is Ethynyltriisopropylsilane, SMILES is CC([Si](C(C)C)(C#C)C(C)C)C, belongs to naphthyridine compound. In a article, author is Jin, Shouwen, introduce new discover of the category.

Structural Characterization of Di- and Mono-Imidazolyl-Substituted 1,8-Naphthyridine Derivatives

Two imidazolyl derived 1,8-naphthyridine compounds (2,7-diimidazolyl-1,8-naphthyridine (a), and 2-benzimidazolyl-5,7-dimethyl-1,8-napthyridine (b)) were synthesized and structurally characterized by X-ray crystallography. The compound a co-crystallizes with one ethanol and two water molecules to give compound 1. Compound 1 crystallizes in the triclinic, space group P-1, with a = 6.943(2) angstrom, b = 9.009(3) angstrom, c = 13.760(3) angstrom, alpha = 96.793(2)degrees, beta = 97.431(3)degrees, gamma = 107.080(2)degrees, V = 804.6(4) angstrom(3), Z = 2. Compound 1 forms a 3D interpenetrated network through hydrogen bonds. Compound b cocrystallizes with three and one half water molecules to form 2. Compound 2 crystallizes in the monoclinic, space group C2/c, with a = 24.926(8) angstrom, b = 10.608(3) angstrom, c = 16.751(5) angstrom, b = 110.133(4)degrees, V = 4159(2) angstrom(3), Z = 8. The free water molecules form six-membered rings, these water rings connect the naphthyridine to form one dimensional chain when viewed from b axis. The naphthyridyl rings in a and b axis are connected through C-H center dot center dot center dot pi, and pi-pi interactions, due to the weak interactions the compound shows 3D network structure.

Synthetic Route of 89343-06-6, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 89343-06-6.

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

Reference of 149022-15-1, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 149022-15-1, Name is 3-Methyl-2-benzothiazolinone hydrazone hydrochloride hydrate(1:1:x), SMILES is CN1/C(SC2=CC=CC=C12)=N/N.[H]Cl.[H]O[H], belongs to naphthyridine compound. In a article, author is Yu, Ming-Ming, introduce new discover of the category.

A 1,8-Naphthyridine-Based Fluorescent Chemodosimeter for the Rapid Detection of Zn2+ and Cu2+

A novel fluorescent chemodosimeter based on 1,8-naphthyridine exhibits high selectivity to Zn2+ and Cu2+. When 1-(7-acetamino-1,8-naphthyridyl)2-(6-diacetaminopyridyl)ethene was mixed with CuCl2, hydrolysis of the acetamino group catalyzed by Cu2+ complex was first observed. Resulting from coordination and hydrolysis catalyzed by the corresponding complex of Zn2+ or Cu2+, the highly effective fluorescent detection of Zn2+ and Cu2+ is realized with Zn2+-selective dual-emission and Cu2+-selective ON-OFF behavior.

Reference of 149022-15-1, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 149022-15-1.

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. 88847-89-6, Name is 2-Amino-9-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-3H-purine-6,8(7H,9H)-dione, SMILES is O=C1N=C(N)NC2=C1NC(N2[C@@H]3O[C@H](CO)[C@@H](O)C3)=O, in an article , author is Al-Omran, Fatima, once mentioned of 88847-89-6, Product Details of 88847-89-6.

Synthesis of novel thieno[2,3-b][1,6]naphthyridine and thieno [2 ‘,3 ‘: 2,3]pyrido[4,5-d]pyrimidine derivatives

Derivatives of novel thieno[2,3-b][1,6]naphthyridines and thieno[2′,3’: 2,3]pyrido[4,5-d]pyrimidines containing an attached benzotriazole ring have been synthesised.

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

Reference of 106-49-0, 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. 106-49-0, Name is p-Toluidine, SMILES is NC1=CC=C(C)C=C1, belongs to naphthyridine compound. In a article, author is Shinozaki, Ayako, introduce new discover of the category.

Polymerization Mechanism of Nitrogen-Containing Heteroaromatic Compound Under High-Pressure and High-Temperature Conditions

Hydrogenated carbon nitride is synthesized by polymerization of 1,5-naphthyridine, a nitrogen-containing heteroaromatic compound, under high-pressure and high-temperature conditions. The polymerization progressed significantly at temperatures above 573 K at 0.5 GPa and above 623 K at 1.5 GPa. The reaction temperature was relatively lower than that observed for pure naphthalene, suggesting that the reaction temperature is considerably lowered when nitrogen atoms exist in the aromatic ring structure. The polymerization reaction largely progresses without significant change in the N/C ratio. Three types of dimerization are identified; naphthylation, exact dimerization, and dimerization with hydrogenation as determined from the gas chromatograph-mass spectrometry analysis of soluble products. Infrared spectra suggest that hydrogenation products were likely to be formed with spa carbon and NH bonding. Solid-state C-13 nuclear magnetic resonance reveals that the sp(3)/sp(2) ratio is 0.14 in both the insoluble solids synthesized at 0.5 and 1.5 GPa. Not only the dimers but also soluble heavier oligomers and insoluble polymers formed through more extensive polymerization. The major reaction mechanism of 1,5-Nap was common to both the 0.5 and 1.5 GPa experiments, although the required reaction temperature increased with increasing pressure and aromatic rings preferentially remained at the higher pressure.

Reference of 106-49-0, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 106-49-0.

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