Category: pyrazoles-derivatives

Electric Literature of 1985-46-2, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 1985-46-2, Name is N2,N2-Dimethyl-1,3,5-triazine-2,4,6-triamine, SMILES is NC1=NC(N)=NC(N(C)C)=N1, belongs to pyrazoles-derivatives compound. In a article, author is Kerzare, Deweshri R., introduce new discover of the category.

Development of novel indole-linked pyrazoles as anticonvulsant agents: A molecular hybridization approach

A series of 3-{2-[1-acetyl-5-(substitutedphenyl)-4,5-dihydropyrazol-3-yl]hydrazinylidene}-1,3-dihydro-2H-indol-2-ones24-43was synthesized using an appropriate synthetic route and evaluated experimentally by the maximal electroshock test. These compounds were evaluated for antidepressant and antianxiety activities. The most active compound, 3-{2-[1-acetyl-5-(4-chlorophenyl)-4,5-dihydropyrazol-3-yl]hydrazinylidene}-1,3-dihydro-2H-indol-2-one25, exhibited an ED(50)of 13.19 mmol/kg, a TD(50)of 43.49 mmol/kg, and a high protective index of 3.29, compared with the standard drug diazepam. To get insights into the intermolecular interactions, molecular docking studies were performed at the active site of the GABA(A)receptor and the MAO-A enzyme. Molecular docking studies are also in agreement with the pharmacological evaluation with potent compounds, exhibiting docking scores of -1.5180 and 0.7458 for the GABA(A)receptor and MAO-A, respectively. The 3D-QSAR analysis was carried out by Vlife MDS engine 4.3.1, and a statistically reliable model with good predictive power (r(2) = 0.7523,q(2) = 0.3773) was achieved. The 3D-QSAR plots gave insights into the structure-activity relationship of these compounds, which may aid in the design of potent benzopyrrole derivatives as anticonvulsant agents. So, our research can make a great impact on those medicinal chemists who work on the development of anticonvulsant agents.

Electric Literature of 1985-46-2, Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 1985-46-2.

Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics

Chemistry, like all the natural sciences, begins with the direct observation of nature¡ª in this case, of matter.330792-70-6, Name is 3-Amino-5-(4-phenoxyphenyl)pyrazole-4-carbonitrile, SMILES is N#CC1=C(N)NN=C1C2=CC=C(OC3=CC=CC=C3)C=C2, belongs to pyrazoles-derivatives compound. In a document, author is Goodwin, Jack W., introduce the new discover, Computed Properties of C16H12N4O.

Structural and spectroscopic insights on the coordination chemistry of the rigid heterotopic chelating ligand 1H-pyrazolo[4,3-h]quinoline

In this work, we report the coordination chemistry of a rigid heterotopic ligand 1H-pyrazolo[4,3-h]quinoline HL1 in copper(II) and zinc(II) complexes and examine both the structural properties and solution-phase behavior of these species. On reaction with zinc(II) nitrate in acetonitrile, a mononuclear complex [Zn(HL1)(2)(OH2)(2)](NO3)(2) 1 is generated, where a size mismatch between the metal ion and the binding pocket leads to an anomalously long Zn-N bond to the pyrazole nitrogen. This is consistent with solution-state absorption and fluorescence measurements which indicate a relatively low stability constant log beta of 9.1(3) in acetonitrile. The reaction of HL1 with copper(II) nitrate in methanol gave four new crystalline phases, the major forms of which are two polymorphs of [Cu-2(mu(2)-L1)(2)(NO3)(2)(MeOH)(2)] 2 alpha and 2 beta which also constitutes the dominant solution-phase behavior of this mixture. Additionally, trace amounts of the nitric acid salt of HL1 were crystallized along with the slow formation of a tetranuclear species [Cu-4(mu(2)-L1)(6)(OH2)(2)](NO3)(2) center dot 2MeOH3 which also features anomalously long bridging distances from L1 as a result of its backbone rigidity. [GRAPHICS]

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 330792-70-6 is helpful to your research. Computed Properties of C16H12N4O.

Reference:
Pyrazole – Wikipedia,
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Application of 1453-58-3, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 1453-58-3, Name is 3-Methylpyrazole, SMILES is CC1=NNC=C1, belongs to pyrazoles-derivatives compound. In a article, author is Hossain, Sayed Muktar, introduce new discover of the category.

A nano-molar level fluorogenic and oxidation state-selective chromogenic dual reversible chemosensor for multiple targets, Cu2+/S(2-)and Fe3+/F(-)ions

A pyridine-pyrazole-pyrene-based chemosensor,L, has been developed and fully characterized by all the possible techniques (ESI-MS, NMR, CHN, IRetc.). It has been found that the probe,L, selectively recognizes Cu(2+)ion and Fe(3+)ion fluorogenically and chromogenically, respectively, among a wide range of competitive metal ions. It has been demonstrated that the probe is not only metal ion-selective but also oxidation state-selective for Fe(3+)ions. The metal complexes (Cu and Fe) of the ligand were synthesized and characterized using different spectroscopic techniques and they were also characterised X-ray structurally as well, which confirm the stoichiometry (L : M = 2 : 1). The sensitivities for the fluorogenic sensing of Cu(2+)ions and chromogenic sensing of Fe(3+)have been found to be as low as nano molar level detection (69 nM and 27 nM, respectively). Further studies reveal that the Cu(II)L(2)complex can act as a turn-off fluorescent chemosensor for S(2-)ions and Fe(III)L(2)can act as a reversible turn-off colorimetric chemosensor for F(-)ions over other anions.

Application of 1453-58-3, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about 1453-58-3 is helpful to your research.

Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics

Synthetic Route of 176969-34-9, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 176969-34-9, Name is 3-(Difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic acid, SMILES is O=C(C1=CN(C)N=C1C(F)F)O, belongs to pyrazoles-derivatives compound. In a article, author is Mehravar, Maryam, introduce new discover of the category.

Preparation and Application of Nano-AlPO4/Ti (IV) as a New and Recyclable Catalyst for the Four-Component Synthesis of Dihydropyrano[2,3-c]Pyrazoles

In this work, nano-AlPO4/Ti(IV) (NAPT) as a new nanocomposite was prepared and then characterized by FT-IR, XRD, FESEM, TEM, BET and TGA. This nano-catalyst was used for synthesis of dihydropyrano[2,3-c]pyrazole (DHPP) derivatives by one-pot four component reaction of aldehyde, ethyl acetoacetate, malononitrile and hydrazine hydrate. An uncomplicated work-up, high yields of product, short reaction times and use of low-cost catalyst are considerable properties of present procedure.

Synthetic Route of 176969-34-9, 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 176969-34-9 is helpful to your research.

Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics

In an article, author is Milani, Jorge L. S., once mentioned the application of 2075-46-9, Recommanded Product: 2075-46-9, Name is 4-Nitro-1H-pyrazole, molecular formula is C3H3N3O2, molecular weight is 113.08, MDL number is MFCD00159626, category is pyrazoles-derivatives. Now introduce a scientific discovery about this category.

Chromium Complexes Supported by Phenyl Ether-Pyrazolyl [N,O] Ligands as Catalysts for the Oligo- and Polymerization of Ethylene

A new series of Cr (III) complexes [Cr{1-(3-phenoxypropyl)-1H-pyrazole}Cl-3](2)(Cr1),[Cr{1-(3-phenoxypropyl)-3,5-dimethyl-1H-pyrazole}Cl-3](2)(Cr2), and [Cr{1-(3-phenoxypropyl)-3-phenyl-1H-pyrazole}Cl-3](2)(Cr3)have been synthesized and characterized by elemental analysis, high-resolution mass spectrometry (HRMS) and IR spectroscopy. Upon activation with methylaluminoxane (MAO), chromium precatalystsCr2andCr3showed moderate activity in ethylene oligomerization [TOF = 17,900-29,200 mol (ethylene).mol (Cr)(-1).h(-1)at 80 degrees C] with Schultz-Flory distribution of oligomers (K= 0.54-0.66) and production of polymer varying from 2.8 to 6.7 wt.%. On the other hand, under identical oligomerization conditions,Cr1/MAO behaved as a polymerization catalyst generating predominantly polyethylene (63.7 wt%). The amount of 1-butene is the largest component in the liquid fraction suggesting that these precatalysts operate via a Cossee-Arlman mechanism. The catalytic activities, selectivity and product distribution are quite sensitive to the R-group at the 3- and 5-position of the pyrazolyl ring. Based on the electronic and steric effects of R- substituents, it is possible to stablish a trend of activity:Cr2(Pz(Me2)) >Cr3(Pz(Ph)) >Cr1(Pz). Moreover, the effect of oligomerization parameters (cocatalyst, temperature, [Al]/[Cr] molar ratio, time) on the activity and on the product distribution were examined.

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Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics

Chemistry is traditionally divided into organic and inorganic chemistry. The former is the study of compounds containing at least one carbon-hydrogen bonds. 330792-70-6, Name is 3-Amino-5-(4-phenoxyphenyl)pyrazole-4-carbonitrile, molecular formula is C16H12N4O, belongs to pyrazoles-derivatives compound, is a common compound. In a patnet, author is Bansal, K. K., once mentioned the new application about 330792-70-6, Formula: C16H12N4O.

Synthesis of thiazole clubbed pyrazole derivatives as apoptosis inducers and anti-infective agents

Fourteen N-[{(substituted-phenylthiazol-2-yl)-3-aryl-1H-pyrazol-4-yl}methylene]-5-substituted-thiazol-2-amine (5a-n) analogs were synthesized by the reaction of 3-aryl-1-(thiazol-2-yl)-1H-pyrazole-4-carbaldehyde and substituted thiazole amines. The structures of prepared compounds were delineated by elemental analysis, FT-IR and H-1 NMR spectra. These analogs were scrutinized for in vitro antiinfective and cytotoxic activities. Some thaizole clubbed pyrazole derivatives were assessed for their cytological changes in germ cells of Capra hircus by using histomorphological analysis, fluorescence assay and apoptosis quantification. Compound 51 having 4-NO2 substituent induced the significant apoptosis in tested cells of Capra hircus. The results revealed that compounds 5c, 5e, 5k, and 51 have commendable antibacterial activity within MIC range of 62.5-250 mu g/ml. Compound 5c emerged as a potent antimalarial compound by exhibiting IC50 value of 0.23 mu g/ml and compound 5j induced paralysis of Pherentima posthuma at 8.6 +/- 1.94 min and death at 20 +/- 5.04 min, respectively. Compound 5j revealed an excellent cytotoxicity at IC50 value of 30.7 and < 10 mu g/ml against MCF-7 and HeLa cells, respectively. Individually, compounds 5c, 5j and 51 could be considered as promising anti-infective and cytotoxic compounds. (C) 2020 Elsevier Ltd. All rights reserved. We¡¯ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, 330792-70-6. The above is the message from the blog manager. Formula: C16H12N4O.

Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics

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, HPLC of Formula: C19H20N2O2, 50-33-9, Name is Phenylbutazone, SMILES is O=C(C1CCCC)N(C2=CC=CC=C2)N(C3=CC=CC=C3)C1=O, belongs to pyrazoles-derivatives compound. In a document, author is Calancea, Sergiu, introduce the new discover.

Magnetic Molecular Rectangles Constructed from Functionalized Nitronyl-Nitroxide Ligands and Lanthanide(III) Ions

Five binuclear complexes with rectangular topology have been synthesized using a nitronyl-nitroxide ligand (L) functionalized with a pyrazole coordinating group: [Ln(2)(hfac)(2)L-2], with Ln=Eu (1), Gd (2 a, 2 b), Tb (3), Dy (4), Tm (5). The Eu-III and Tm-III complexes crystallize in the P2(1)/n space group, while the Gd-III, Tb-III, and Dy-III derivatives crystalize in P-1 space group. The crystal structures for compounds 2 a, 3, 4, and 5 have been fully solved, while for compounds 1 and 2 b, the unit cell parameters have been measured and compared with crystals 3 and 5. Crystals 2 a (P2(1)/n) and 2 b (P-1) are polymorphic forms. In these complexes the nitronyl-nitroxide ligand bridges two metal ions through one aminoxyl group and the pyrazole fragment. In the five complexes the Ln(III) ions show a coordination number of eight with a triangular dodecahedron geometry. The magnetic properties of all five complexes have been investigated. For compounds 2, 3, and 4 the Ln(III)-Rad interaction was found to be ferromagnetic: J(GdRad)=2.09(1) cm(-1) [H=-2J(GdRad)(SGd1SRad1+SGd2SRad2], J(TbRad)=1.93(14) cm(-1), J(DyRad)=1.72(14) cm(-1). The Tm-III-Rad coupling is antiferromagnetic (J(TmRad)=-0.53(1) cm(-1)). For the Tb-III, Dy-III, and Tm-III complexes the effects of the crystal field have been taken into account in the fitting procedure.

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 50-33-9. HPLC of Formula: C19H20N2O2.

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Pyrazole – Wikipedia,
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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. 1985-46-2, Name is N2,N2-Dimethyl-1,3,5-triazine-2,4,6-triamine, formurla is C5H10N6. In a document, author is Dias, Bianca Boni, introducing its new discovery. COA of Formula: C5H10N6.

Synthesis, structural characterization, and prospects for new cobalt (II) complexes with thiocarbamoyl-pyrazoline ligands as promising antifungal agents

Candida spp. cause invasive fungal infections. One species, Candida glabrata, may present intrinsic resistance to conventional antifungal agents, thereby increasing mortality rates in hospitalized patients. In this context, metal complexes present an alternative for the development of new antifungal drugs owing to their biological and pharmacological activities demonstrated in studies in the last decades. Accordingly, in this study we have synthesized and characterized two new Co(II) complexes with thiocarbamoyl-pyrazoline ligands to assess their antimicrobial, mutagenic, and cytotoxic potential. For antimicrobial activity, the broth microdilution method was performed against ATCC strains of Candida spp. and fluconazole dose-dependent isolates of C. glabrata obtained from urine samples. The Ames test was used to assess mutagenic potential. The reduction method of the MTS reagent (3 [4,5-dimethylthiazol-2-yl]-5-[3-carboxymethoxyphenyl]-2-[4-sulfophenyl]-2H-tetrazolium) was performed with HeLa, SiHa, and Vero cells to determine cytotoxicity. Both complexes exhibited fungistatic and fungicidal activity for the yeasts used in the study, demonstrating greater potential for C. glabrata ATCC 2001 and the C. glabrata CG66 isolate with a Minimum Inhibitory Concentration MIC from 3.90 to 7.81 mu g mL(-1) and fungicidal action from 7.81 to 15.62 mu g mL(-1). The complexes inhibited and degraded biofilms by up to 90% and did not present mutagenic and cytotoxic potential at the concentrations evaluated for MIC. Thus, the complexes examined herein suggest promising alternatives for the development of new antifungal drugs.

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Pyrazole – Wikipedia,
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Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 35344-95-7, Name is 1H-Pyrazole-4-carbaldehyde, SMILES is O=CC1=CNN=C1, belongs to pyrazoles-derivatives compound. In a document, author is Gogoi, Pinku, introduce the new discover, Quality Control of 1H-Pyrazole-4-carbaldehyde.

In silico study, synthesis, and evaluation of the antimalarial activity of hybrid dimethoxy pyrazole 1,3,5-triazine derivatives

Malaria continues to become a major global health problem, particularly in Sub-Saharan Africa, Asia, and Latin America. The widespread emergence of resistance to first-line drugs has further bolstered an urgent need for a new and cost-effective antimalarial(s). Thus, the present study enumerates the synthesis of novel hybrid dimethoxy pyrazole 1,3,5-triazine derivatives 7(a-j) and their in silico results short-listed three compounds with good binding energies and dock scores. Docking analysis shows that hydrogen-bonding predominates and typically involves key residues, such as Asp54, Tyr170, Ile164, and Arg122. The in vitro antimalarial evaluation of three top-ranked compounds (7e, 7g, and 7h) showed half-maximal inhibitory concentration values range from 53.85 to 100 mu g/ml against chloroquine-sensitive strain 3D7 of Plasmodium falciparum. Compound 7e may be utilized as a lead for further optimization work in drug discovery due to good antimalarial activity.

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 35344-95-7 is helpful to your research. Quality Control of 1H-Pyrazole-4-carbaldehyde.

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Pyrazole – Wikipedia,
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Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 37622-90-5, Name is Ethyl 4-pyrazolecarboxylate, molecular formula is C6H8N2O2. In an article, author is Zhang, Shi-Hui,once mentioned of 37622-90-5, Formula: C6H8N2O2.

Rational synthesis of an ultra-stable Zn(II) coordination polymer based on a new tripodal pyrazole ligand for the highly sensitive and selective detection of Fe3+ and Cr2O72- in aqueous media

A mixed-ligand strategy has been used to construct stable luminescent coordination polymers (CPs). An ultra-stable Zn(ii) coordination polymer, [Zn(H(3)tpb)(Hbtc)](n)(1) was hydrothermally synthesized by employing a new tripodal pyrazole ligand H(3)tpb and a classical carboxylic ligand H(3)btc (H(3)tpb = 1,3,5-tris(pyrazolyl)benzene, H(3)btc = 1,3,5-benzenetricarboxylic acid). Complex 1 exhibits a 2D sql network. Importantly,1 not only possesses excellent thermal stability but also shows superior chemical stability in terms of water resistance, acid/base aqueous solutions tolerance (pH = 2-12), and organic solvents resistance. This excellent structural stability was further illustrated from the perspective of thermal decomposition kinetics. The luminescence properties were investigated, showing that complex 1 displays high sensitivity and selectivity for detecting Fe3+ and Cr2O72- ions in aqueous solutions via luminescence quenching effects.

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Pyrazole – Wikipedia,
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