Heterocyclic Building Blocks-Pyridazine

Application of 1538-08-5, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 1538-08-5, Name is 2,2,2-Trifluoroacetohydrazide, SMILES is NNC(=O)C(F)(F)F, belongs to pyridazines compound. In a article, author is Khalil, Mohamed A., introduce new discover of the category.

Synthesis and Reactivity of 3-oxoprop-1-en-1-olate Derivative as a Building Block for the Synthesis of Azole and Azine Derivatives

Several new heterocyclic compounds such as 7-substituted pyrazolo[1,5-a]pyrimidine (5a-e) derivatives have been synthesized by the reactions of the versatile unreported sodium 3-(4-methyl-2-(4-methylphenylsulfonamido)thiazol-5-yl)-3-oxoprop-1-en-1-olate (2) with amino heterocyclic (3a-e) derivatives. Reaction of (2) with hydrazonyl halide (7a-d) and hydroximoyl chloride (11a,b) derivatives followed by reaction with hydrazine hydrate afforded pyrazolo[3,4-d]pyridazine and isoxazolo[3,4-d]pyridazine derivatives, respectively incorporating a thiazole moiety have been described. All newly synthesized compounds were elucidated by considering the data of both elemental and spectral analysis.

Application of 1538-08-5, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 1538-08-5.

Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

455-24-3, Name is 4-(Trifluoromethyl)benzoic acid, molecular formula is C8H5F3O2, belongs to pyridazines compound, is a common compound. In a patnet, author is Sakhteman, Amirhossein, once mentioned the new application about 455-24-3, Category: pyridazines.

In Silico Screening of IL-1 beta Production Inhibitors Using Chemometric Tools

The IL-1 beta plays a major role in inflammatory disorders and IL-1 beta production inhibitors can be used in the treatment of inflammatory and related diseases. In this study, quantitative relationships between the structures of 46 pyridazine derivatives (inhibitors of IL-1 beta production) and their activities were investigated by Multiple Linear Regression (MLR) technique Stepwise Regression Method (ES-SWR). The genetic algorithm (GA) has been proposed for improvement of the performance of the MLR modeling by choosing the most relevant descriptors. The results show that eight descriptors are able to describe about 83.70% of the variance in the experimental activity of the molecules in the training set. The physical meaning of the selected descriptors is discussed in detail. Power predictions of the QSAR models developed were evaluated using cross-validation, and validation through an external prediction set. The results showed satisfactory goodness-of-fit, robustness and perfect external predictive performance. The applicability domain was used to define the area of reliable predictions. Furthermore, the in silico screening technique was applied in order to predict the structure and potency of new compounds of this type using the proposed QSAR model.

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Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 39825-33-7, Name is H-Ala-OiPr, SMILES is C[C@H](N)C(OC(C)C)=O, belongs to pyridazines compound. In a document, author is Rodriguez-Enriquez, Fernanda, introduce the new discover, HPLC of Formula: C6H13NO2.

Novel coumarin-pyridazine hybrids as selective MAO-B inhibitors for the Parkinson’s disease therapy

The 3-pyridazinylcoumarin scaffold was previously reported as an efficient core for the discovery of reversible and selective inhibitors of MAO-B, a validated drug target for PD therapy which also plays an important role in the AD progress. Looking for its structural optimization, novel compounds of hybrid structure coumarin-pyridazine, differing in polarizability and lipophilicity properties, were synthesized and tested against the two MAO isoforms, MAO-A and MAO-B (compounds 17a-f and 18a-f). All the designed compounds selectively inhibited the MAO-B isoenzyme, exhibiting many of them IC50 values ranging from sub-micromolar to nanomolar grade and lacking neuronal toxicity. The 7-bromo-3-(6-bromopyridazin-3-yl)coumarin (18c), the most potent compound of these series (IC50 = 60 nM), was subjected to further in vivo studies in a reserpine-induced mouse PD model. The obtained results suggest a promising potential for 18c as antiparkinsonian agent. Molecular modeling studies also provided valuable information about the enzyme-drug interactions and the potential pharmacokinetic profile of the novel compounds.

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 39825-33-7 is helpful to your research. HPLC of Formula: C6H13NO2.

Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, Application In Synthesis of 2,2,2-Trifluoroacetohydrazide1538-08-5, Name is 2,2,2-Trifluoroacetohydrazide, SMILES is NNC(=O)C(F)(F)F, belongs to pyridazines compound. In a article, author is Ghorbani-Vaghei, Ramin, introduce new discover of the category.

Preparation and characterization of nanomagnetic piperidinium benzene-1,3-disulfonate ionic liquid as a novel, green and heterogeneous catalyst and its use in the synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones and 1H-pyrazolo[1,2-a]pyridazine-5,8-diones under solvent-free conditions

The one-pot four-component synthesis of 1H-pyrazolo[1,2-b] phthalazine-5,10-diones and 1H-pyrazolo[1,2-a] pyridazine-5,8-diones was carried out from the reaction between various aldehydes, malononitrile, hydrazine hydrate and phthalic anhydride or maleic anhydride at 110 degrees C in solvent-free conditions using piperidinium benzene-1,3-disulfonate nanomagnetic ionic liquid (NMIL) as a novel and reusable catalyst. Some advantages of the presented procedure are a significant reduction in cost, effective catalysis and reusability of the catalyst. NMIL was thoroughly characterized using Fourier transform infrared spectroscopy, X-ray diffraction, scanning and transmission electron microscopies, thermogravimetry, derivative thermogravimetry, Brunauer-Emmett-Teller analysis, vibrating sample magnetometry and energy-dispersive X-ray spectroscopy. The technique is developed as a suitable and safe method for the synthesis of 1H-pyrazolo[1,2-b] phthalazine-5,10-diones and 1H-pyrazolo[1,2-a] pyridazine-5,8-diones making use of an efficient and reusable green catalyst.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 1538-08-5. Application In Synthesis of 2,2,2-Trifluoroacetohydrazide.

Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 103-85-5, Name is 1-Phenylthiourea, molecular formula is C7H8N2S. In an article, author is Qadir, Abdul,once mentioned of 103-85-5, COA of Formula: C7H8N2S.

GC-MS analysis of the methanolic extracts of Smilax china and Salix alba and their antioxidant activity

Smilax china L. (family Smilacaceae) and Salix alba L. (family Salicaceae) are plants that have been traditionally used to treat various ailments in Indian and Chinese medicine. A quantitative estimation of the methanolic extracts of these plants was performed by GC-MS analysis to obtain insight into its phytoconstituents responsible for therapeutic action. The antioxidant potential of the methanol extracts of Smilax china (MESC) and Salix alba (MESA) were assessed with DPPH by using a UV spectrophotometer at a wavelength of 517 nm. The prevailing compounds found in MESC were lactam sugars including 2,5-dimethyl-2,4-dihydroxy-3(2H)-furanon (1.40%), 1,5-anhydro-6-deoxyhexo-2,3-diulose (4.33%), and alpha-methyl-1-sorboside (1.80%); the two alkaloids found were 1,4-methane-4,4a,5,6,7,8,9,9a-octahydro-10,10-dimethyl cyclohepta[d] pyridazine (0.87%) and 1,3,7-trimethyl-2,6-dioxopurine(0.54%); terpenes included deltacadinene (0.39%), terpineol, ( +) -cedrol (22.13%), 3-thujanol (0.77%), and 9,10-dehydro-cycloisolongifolene (0.34%); fatty acids included cis-vaccenic acid (4.98%) and telfairic acid (1.10%); esters included 1,2,3-propanetriol diacetate (7.56%), 7-hexadecenoic acid, methyl ester (1.77%), eicosanoic acid, and methyl ester (0.95%); and glycerol included 1,2,3-propanetriol (28.75%). The interesting compounds found in MESA were reducing sugars like D-allose (4.40%) and pyrogallol (10.48%), alkaloids like caffeine (63.49%), and esters like methyl octadecanoate (0.53%). Both fractions revealed considerable antioxidant activity. The reported existing phenolic compounds and terpenes are responsible for the antioxidant activity of the plant extracts.

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Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

Reference of 2231-57-4, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 2231-57-4, Name is Carbonothioic dihydrazide, SMILES is NNC(NN)=S, belongs to pyridazines compound. In a article, author is Khan, Abida, introduce new discover of the category.

Synthesis of novel N-substitutedphenyl-6-oxo-3-phenylpyridazine derivatives as cyclooxygenase-2 inhibitors

Some novel non-ulcerogenic N-substitutedphenyl-6-oxo-3-phenylpyridazines as COX-2 inhibitors have been developed (Supplementary material Appendix1). The novel aldehyde3was prepared by reacting 6-phenylpyridazin-3(2H)-one with 4-fluorobenzaldehyde. The aldehyde3was reacted with different hydrazines and thiazolidin-4-ones to obtain the novel N-substitutedphenyl-6-oxo-3-phenylpyridazine derivatives. These were assessed for their anti-inflammatory potential and gastric ulcerogenic effects. The molecular docking investigations were also undertaken. The spectroscopic data were coherent with the allocated structures of the compounds. The compounds4a(IC50= 17.45 nm;p< .05),4b(IC50= 17.40 nm;p <.05),5a(IC50= 16.76 nm;p< .05), and10(IC50= 17.15 nm;p< .05) displayed better COX-2 inhibitory activity than celecoxib (IC50= 17.79 nm;p< .05). These findings were consistent with the molecular docking investigations of4a,4b,5a, and10. Thein vivoanti-inflammatory profile of4a,4b,5a, and10was also superior to celecoxib and indomethacin. The compounds4b,5a, and10revealed no gastric ulcerogenic effects, wherein the compound4aproduced almost negligible gastric ulcerogenic effects than celecoxib and indomethacin. The compounds4a,4b,5a, and10have been postulated as promising non-ulcerogenic COX-2 inhibitors. Reference of 2231-57-4, 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 2231-57-4 is helpful to your research.

Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

In an article, author is Das, Deepankar, once mentioned the application of 920-66-1, Category: pyridazines, Name is 1,1,1,3,3,3-Hexafluoropropan-2-ol, molecular formula is C3H2F6O, molecular weight is 168.0378, MDL number is MFCD00011651, category is pyridazines. Now introduce a scientific discovery about this category.

Chiral bisoxazoline ligands designed to stabilize bimetallic complexes

Chiral bisoxazoline ligands containing naphthyridine, pyridazine, pyrazole, and phenol bridging units were prepared and shown to form bimetallic complexes with various metal salts. X-ray crystal structures of bis-nickel naphthyridine-bridged, bis-zinc pyridazine-bridged, and bis-nickel as well as bis-palladium pyrazole-bridged complexes were obtained.

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Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 2605-67-6, Name is Methyl 2-(triphenylphosphoranylidene)acetate, SMILES is C3=C([P](C1=CC=CC=C1)(C2=CC=CC=C2)=CC(OC)=O)C=CC=C3, in an article , author is Adiraju, Venkata A. K., once mentioned of 2605-67-6, Computed Properties of C21H19O2P.

Isomer Dependence on the Reactivity of Diazenes with Pentaphenylborole

Reactions of the anti-aromatic pentaphenylborole with diazenes indicate that both the substitution and the isomer influence the reaction outcome. With respect to trans isomers, azobenzene underwent coordination and C-H addition across the diene of the borole, and 2′, 6′-dimethylazobenzene furnished a fused tricyclic system. Under photolytic conditions, both of the aforementioned diazenes generate the first 1,3,2-diazaborepin heterocycles, rationalized through reactivity with the cis isomers. This notion is corroborated by the reaction of pentaphenylborolewith benzo[c]-cinnoline, the tethered variant of azobenzene, that only exists as the cis conformer as the corresponding 1,3,2-diazaborepin was produced regardless if the reaction is conducted in the dark or light. The more aromatic pyridazine proved to be less reactive, forming a resilient adduct.

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Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

Electric Literature of 375395-33-8, 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. 375395-33-8, Name is N-Methyl-N,N-dioctyloctan-1-aminium bis((trifluoromethyl)sulfonyl)amide, SMILES is CCCCCCCC[N+](CCCCCCCC)(C)CCCCCCCC.O=S([N-]S(=O)(C(F)(F)F)=O)(C(F)(F)F)=O, belongs to pyridazines compound. In a article, author is Abida, introduce new discover of the category.

Synthesis of some pyridazine derivatives as antioxidants and antimicrobial agents

Purpose: To prepare some pyridazine derivatives as antioxidant and antimicrobial agents. Methods: The coupling of aryl diazonium salts with diethyl 2-cyano-3-methylglutaconate afforded pyridazine-5-carbonitrile derivatives (3a-e). The methyl function in the pyridazine derivatives (3a-e) reacted with cinnamonitriles to yield phthalazine derivatives (6a-h). Imino-pyridazine derivatives (9a-h) were obtained by reacting 2-aminoprop-1-ene-1,1,3-tricarbonitrile along with aryl diazonium salts (1a-h). Structure elucidation was done by spectral analysis. The 1,1-diphenyl-2-picryl hydrazyl (DPPH) technique was employed to assess antioxidant effect, while evaluation of antimicrobial activity was carried out by serial dilution technique. Results: Compounds, 6f (IC50 = 12.68 mu g/mL; p < 0.05), 6a (IC50 = 14.23 mu g/mL; p < 0.05), and 3c (IC50 = 14.34 mu g/mL; p < 0.05) displayed good antioxidant activity compared to ascorbic acid (IC50 = 12.45 mu g/mL; p < 0.05). Based on the zone of inhibition, compound 6c (p < 0.05) displayed higher activity than ofloxacin (p < 0.05) against E. coli. Conclusion: The presence of an oxo group and carboxylate group plays an important role in the antioxidant activity of these compounds. Compounds 6a, 6f, and 3c can potentially serve as lead compounds for the development of promising antioxidants. Electric Literature of 375395-33-8, 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 375395-33-8 is helpful to your research.

Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem

 

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. Application In Synthesis of 4-Pyridazinecarboxylic Acid, 50681-25-9, Name is 4-Pyridazinecarboxylic Acid, SMILES is N1=NC=C(C=C1)C(=O)O, in an article , author is Park, Yong Dae, once mentioned of 50681-25-9.

A Pyridazine-Based Fluorescent Probe Targeting A beta Plaques in Alzheimer’s Disease

Accumulation of beta-amyloid (A beta) plaques comprising A beta 40 and A beta 42 in the brain is the most significant factor in the pathogenesis of Alzheimer’s disease (AD). Thus, the detection of A beta plaques has increasingly attracted interest in the context of AD diagnosis. In the present study, a fluorescent pyridazine-based dye that can detect and image A beta plaques was designed and synthesized, and its optical properties in the presence of A beta aggregates were evaluated. An approximately 34-fold increase in emission intensity was exhibited by the fluorescent probe after binding with A beta aggregates, for which it showed high affinity (K-D=0.35 mu M). Moreover, the reasonable hydrophobic properties of the probe (log P=2.94) allow it to penetrate the blood brain barrier (BBB). In addition, the pyridazine-based probe was used in the histological costaining of transgenic mouse (APP/PS1) brain sections to validate the selective binding of the probe to A beta plaques.) The results suggest that the pyridazine-based compound has the potential to serve as a fluorescent probe for the diagnosis of AD.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 50681-25-9, you can contact me at any time and look forward to more communication. Application In Synthesis of 4-Pyridazinecarboxylic Acid.

Reference:
Pyridazine – Wikipedia,
,Pyridazine | C4H4N2 – PubChem