Category: 626-64-2

Electric Literature of 626-64-2 ,Some common heterocyclic compound, 626-64-2, molecular formula is C5H5NO, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.

Example 56Compound 68Compound 318 (Example 48; 98 mg, 0.34 mmol, 1 eq.) and PPh3 (138 mg, 0.53 mmol, 1 .5 eq.) were dissolved in dry THF (2 ml). Next DIAD (104 muIota, 0.53 mmol, 1 .5 eq.) and 4- hydroxypyridine (50 mg, 0.53 mmol, 1 .5 eq.) were added. The reaction mixture was stirred at RT for approximately 16 hrs, after which the solvent was removed and the crude mixture purified by flash column chromatography (silica, DCM/MeOH 1 :0 to 8:2) to afford compound 68 as a white foam (73 mg; 59%).

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles. 626-64-2, Pyridin-4-ol, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; UNIVERSITY OF DUNDEE; BESNARD, Jeremy; HOPKINS, Andrew Lee; GILBERT, Ian; RUDA, Gian Filippo; ABECASSIS, Keren; WO2012/160392; (2012); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 626-64-2 , The common heterocyclic compound, 626-64-2, name is Pyridin-4-ol, molecular formula is C5H5NO, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.

4-pyridinol (M-40) (20.0 g, 210 mmol)Was suspended in carbon tetrachloride (400 mL)NBS (77.0 g, 431 mmol) was added and, under light shielding,And the mixture was stirred at room temperature for 24 hours.After distilling off the solvent under reduced pressure,The residue was suspended in acetone (400 mL) / methanol (120 mL) and stirred at room temperature for 30 minutes.The precipitated solid was collected by filtration,This was suspended in acetonitrile (1.0 L)And the mixture was stirred at room temperature for 1 hour. After collecting the solid by filtration,After drying under reduced pressure, the compound (M-41)(Yield 46.0 g, yield 86%)As a white solidIt was.

The synthetic route of 626-64-2 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; Kaken Pharmaceutical Co., Ltd.; Watanabe, Atsushi; Sato, Yuki; ogura, Keiji Tamada; Tatsumi, Yoshiyuki; (283 pag.)JP2018/145180; (2018); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Adding a certain compound to certain chemical reactions, such as: 626-64-2, Pyridin-4-ol, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound, Recommanded Product: 626-64-2, blongs to pyridine-derivatives compound. Recommanded Product: 626-64-2

1,7-dibromo perylene diimide (7, 56 mg, 0.1 mmol) was dissolved into 5 mL of DMF. To which 4-hydroxypyridine (47.6 mg, 0.5 mmol) and potassium carbonate (K2CO3, 70 mg, 0.5 mmol) were added. The resulted mixture was then allowed reacted under 80C for 1 hours. The reaction mixture was then powered into 50 mL of water and the red solid was then re-dissolved in 50 mL DCM and washed with 50 mL of 1N hydrochloric acid and then 50 mL of water each for 3 times. Then, DCM layer was dried over Na2SO4. After removal of DCM, the residue was applied to chromatography with CH2Cl2/ethyl acetate (100:0-100:2) as eluents to afford the desired products 9 as red solid (68.7 mg, 0.93 mmol, yield = 93%). 1H-NMR (400MHz, CDCl3) d ppm: 8.66 (s, 1H), 8.63 (s, 1H), 8.56 (d, J = 8.00 Hz, 2H), 7.60 (m, J = 8.00 Hz, 5H), 7.44 (d, J = 7.20 Hz, 1H), 6.69 (d, J = 8.00 Hz, 4H), 5.01 (t, 2H), 2.53 (q, J = 10.32 Hz, 4H), 1.93 (d, J = 10.00 Hz, 4H), 1.75 (d, J = 10.32 Hz, 6H), 1.48 -1.32 (m, J = 13.2 Hz, 12.00 Hz, 10.60 Hz, 11.60 Hz, 11.72 Hz, 6H). 13C-NMR (100 MHz, CDCl3) d ppm: 163.7, 163.4, 162.9, 155.5, 152.7, 152.5, 148.4, 148.3, 133.4, 130.2, 129.1, 128.7, 127.7, 126.5, 125.0, 123.8, 123.7, 123.6, 122.6, 122.1, 119.5, 119.3, 114.9, 59.6, 59.4, 30.8, 30.6, 26.1, 25.9, 24.5, 24.3. TOF MS: m/z = 740.2 [M+H]+.

The synthetic route of 626-64-2 has been constantly updated, and we look forward to future research findings.

Reference:
Article; Zhang, Xin; Pang, Shufeng; Zhang, Zhigang; Ding, Xunlei; Zhang, Shanlin; He, Shenggui; Zhan, Chuanlang; Tetrahedron Letters; vol. 53; 9; (2012); p. 1094 – 1097;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 626-64-2, name is Pyridin-4-ol, molecular formula is C5H5NO, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below. COA of Formula: C5H5NO

4-Hydroxypyridine 1.88g (0.02 mol) and 4,6-dimethoxypyrimidine-2-yl methyl sulfone 4.36g (0.02 mol) were dissolved in DMF 100 ml, and K2CO3 3.3g (1.2 eq) was added thereto. Then, the temperature was maintained at 95C while the mixture was stirred over night. The reacted solution was added to water 100 ml, extracted with diethyl ether, dried with MgSO4, and distilled under reduced pressure to obtain residue. Through purification with silica gel column chromatography, a solid material 3.73g (80%) was obtained: 1H NMR (CDCl3); 3.73 (s, 6H), 5.49 (s, 1H), 6.85-8.42 (m, 4H).

With the rapid development of chemical substances, we look forward to future research findings about 626-64-2.

Reference:
Patent; SNU R&DB Foundation; Korea Research Institute Of Chemical Technology; EP2497768; (2012); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Synthetic Route of 626-64-2, 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. 626-64-2, Name is Pyridin-4-ol, SMILES is OC1=CC=NC=C1, belongs to pyridine-derivatives compound. In a article, author is Kurz, Hannah, introduce new discover of the category.

An Iron(II) Spin Crossover Complex with a Maleonitrile Schiff base-like Ligand and Scan Rate-dependent Hysteresis above Room Temperature

A Schiff base-like ligand bearing a maleonitrile backbone was synthesized and converted in two steps to an octahedral iron(II) complex with axial imidazole ligands. Single crystal X-ray structure analysis of this complex revealed a 3D hydrogen bond network based on the NH groups of the axial imidazole ligands that act as donors. Interestingly, temperature-dependent magnetic measurements showed an abrupt spin crossover with hysteresis above room temperature. Thereby, the hysteresis width features a strong scan rate dependency leading to a 6 K wide hysteresis at a scan rate of 5 K/min and 1 K width when measured in settle mode. This kinetic effect is further investigated by DSC measurements verifying the strong scan rate dependency of the hysteresis width. The small hysteresis was additionally followed using temperature-dependent PXRD. For comparison, the corresponding pyridine complex was synthesized as well.

Synthetic Route of 626-64-2, 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 626-64-2.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Application of 626-64-2, Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. The appropriate choice of redox mediator can avoid electrode passivation and overpotential. 626-64-2, Name is Pyridin-4-ol, SMILES is OC1=CC=NC=C1, belongs to pyridine-derivatives compound. In a article, author is Wang, Fan, introduce new discover of the category.

Resistance of Bemisia tabaci Mediterranean (Q-biotype) to pymetrozine: resistance risk assessment, cross-resistance to six other insecticides and detoxification enzyme assay

BACKGROUND The whitefly Bemisia tabaci (Gennadius) is a severe pest that affects many field and glasshouse crops worldwide and has developed resistance to insecticides in most chemical classes. Pymetrozine, a neuroactive pyridine azomethine, is selective towards piercing-sucking pests in Hemiptera. The aim of this study was to assess the resistance of B. tabaci Mediterranean (MED) to pymetrozine in the laboratory. RESULTS After successive selection of 18 generations of MED in the presence of using pymetrozine, there was an 11.28-fold increase in the median lethal concentration (LC50). When the realized heritability (h(2)) of B. tabaci to pymetrozine in the field was assumed to be the value estimated in the laboratory (h(2) = 0.1360) and the mortality was 70-90%, only 7.2-15.9 generations were estimated to be needed to obtain a ten-fold increase in resistance to pymetrozine. Compared with the susceptible populations (G(0)), the Pyme-SEL strain (G(18)) showed a low level of cross-resistance to neonicotinoids (nitenpyram, imidacloprid, acetamiprid, and thiamethoxam) and no cross-resistance to chlorpyrifos or abamectin. With the G(0) and the Pyme-SEL strains (G(11) and G(18)) as test strains, the activity of multifunctional oxidase exhibited the greatest increase during selection, while the activities of carboxylesterase and glutathione-S-transferase did not change significantly. CONCLUSION This study show that a potential risk of development of resistance to pymetrozine exists in B. tabaci after continuous application. During the application of pymetrozine to control B. tabaci in the field, the frequency of its use in combination with neonicotinoids should be used with caution.

Application of 626-64-2, 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 626-64-2.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 626-64-2, Name is Pyridin-4-ol, molecular formula is C5H5NO. In an article, author is Bartolomeu Halicki, Priscila Cristina,once mentioned of 626-64-2, Computed Properties of C5H5NO.

Antibiofilm Potential of Arenecarbaldehyde 2-Pyridinylhydrazone Derivatives Against Acinetobacter baumannii

In the last 15 years, Acinetobacter baumannii has received special attention, mainly due to several resistance mechanisms and high rates of morbimortality. The ability to form biofilms contributes to the persistence of this microorganism in the hospital environment and facilitates the occurrence of nosocomial infections. Several studies have highlighted the pharmacological relevance of pyridines in the treatment and control of infectious diseases and others have related the anti-A. baumannii potential of hydrazine derivatives. Considering this scenario, we aimed to evaluate the antimicrobial and antibiofilm activity of 10 pyridinylhydrazone compounds against A. baumannii. The minimum inhibitory concentration of the compounds was determined by broth microdilution method and the antibiofilm activity was evaluated by inhibition and destruction biofilm assays. In addition, the cytotoxicity of the compounds in the J774A.1 cell line was also evaluated, and the selectivity index was calculated. Among the 10 pyridine compounds, the compounds B and D were able to inhibit the formation of biofilms and destroy bacterial biofilms even in a concentration of 12.5 mu g/mL. Thus, the pyridine compounds evaluated can be a scaffold for the development of new substances with antimicrobial and antibiofilm activity.

Interested yet? Keep reading other articles of 626-64-2, you can contact me at any time and look forward to more communication. Computed Properties of C5H5NO.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Reference of 626-64-2, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 626-64-2, Name is Pyridin-4-ol, SMILES is OC1=CC=NC=C1, belongs to pyridine-derivatives compound. In a article, author is Zhu, Heping, introduce new discover of the category.

Discovery of novel 2-aryl-3-sulfonamido-pyridines (HoAns) as microtubule polymerization inhibitors with potent antitumor activities

Microtubules play a vital role in cell mitosis. Drugs targeting taxol or vinca binding site of tubulin have been proved an effective way to against cancer. However, drug resistance and cancer recurrence are inevitable, there is an urgent need to search for new microtubule-targeting agents (MTAs). In our study, a series of novel 2-aryl-3-sulfonamido-pyridines (HoAns) had been designed, synthesized, and evaluated for their antiproliferative activities in vitro and in vivo. Among them, compound HoAn32 exhibited the most potent activity with IC50 values ranging from 0.170 to 1.193 mu M in a panel of cancer cell lines. Mechanism studies indicated that compound HoAn32 bound to the colchicine site of beta-tubulin, resulting in colony formation inhibition, G2/M phase cell cycle arrest, cell apoptosis as well as increased the generation of ROS in both RKO and SW620 cells. In addition, compound HoAn32 showed potent antivascular activity in vitro. Furthermore, compound HoAn32 also exhibited outstanding antitumor activity in SW620 xenograft tumor models without observable toxic effects, which was more potent than that of ABT-751. In conclusion, our findings suggest that compound HoAn32 may be a promising microtubule destabilizing agent and deserves for further development in cancer therapy. (C) 2020 Elsevier Masson SAS. All rights reserved.

Reference of 626-64-2, 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 626-64-2 is helpful to your research.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Chemistry is an experimental science, Computed Properties of C5H5NO, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 626-64-2, Name is Pyridin-4-ol, molecular formula is C5H5NO, belongs to pyridine-derivatives compound. In a document, author is Halim, Shimaa Abdel.

Synthesis, DFT computational insights on structural, optical, photoelectrical characterizations and spectroscopic parameters of the novel (2E)-3-(4-methoxy-5-oxo-5H-furo[3, 2-g]chromen-6-yl)acrylonitrile(MOFCA)

Reaction of 6-formylvisnagin (1) with cyanoacetic acid in dry pyridine afforded the novel (2E)-3-(4methoxy-5-oxo-5H-furo[3,2-g]chromen-6-yl)acrylonitrile (2, MOFCA). The chemical structure of the prepared compound was determined by the elemental analysis and spectral data. The individual emulation characteristics of compound (2, MOFCA), were accomplished by DFT, and TD-DFT/B3LYP, at 6-311 ++ G (d, p). The computational results detect the most stable structure of MOFCA, depending on the positions of the methoxy (O-CH 3) group, within change in dihedral angle. FT-IR spectroscopy was applied for the vibrational spectral analysis. Using frontier molecular orbital (FMO) analysis, various spectroscopic and quantum chemical parameters are discussed. The absorption energies, oscillator strength, and electronic transitions of compound (2, MOFCA), have been derived at TD-DFT/CAM-B3LYP/6-311++ G (d,p) computations utilizing a PCM and measured in different polar and non-polar solvents experimentally in UV-Vis spectra. The output of the computation shows accurate agreement between theoretical spectra and practical spectra for the title compound. NLO analysis was computed at the identical plane of theory which are, alpha; Delta alpha, and first-order , the hyper-Rayleigh scattering (beta HRS) and the depolarization ratio (DR), were shown promising optical properties. The plots of natural bonding orbital (NBO), thermochemical parameters and the molecular electrostatic potential surfaces (MEPS) have been computed. All the computations in the gas phase have been completed. (C) 2020 Elsevier B.V. All rights reserved.

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 626-64-2. Computed Properties of C5H5NO.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend strongly on interfacial structure and composition, 626-64-2, Name is Pyridin-4-ol, SMILES is OC1=CC=NC=C1, in an article , author is Bouroumane, Nadia, once mentioned of 626-64-2, Name: Pyridin-4-ol.

New Pyrazole-Based Ligands: Synthesis, Characterization, and Catalytic Activity of Their Copper Complexes

The purpose of this study is to demonstrate the synthesis of pyrazole-based ligands and to evaluate their catalytic properties in the oxidation reaction of catechol to o-quinone. The ligands were prepared via the condensation of (3,5-dimethyl-1H pyrazol-1-yl)methanol A with the appropriate primary amine. Four pyrazole-based ligands were successfully synthesized and characterized. These ligands provide one pyrazole sp(2)-nitrogen, one pyridine sp(2)-nitrogen, and one amine sp(3)-nitrogen, which were capable of coordinating to the metal. For evaluating the catalytic activity, the experiments were tested by varying the type of solvent, metal ion, anion in the metal salt, and ratios of ligands and metal salts. Excellent catalytic activities for the oxidation of catechol to o-quinone were obtained. The copper (II)-based complexes showed better reactions rates than those based on other metals (e.g., nickel, tin, and barium), which was due to the fact that the active catalytic site of the catecholase enzyme has two active sites from the existence of copper (II) ions. The composition ratios of ligands and metal salts as well as the type of anion in the metal salt bring impacts to the formation of complexes. We found also that the type of solvent contributes to the interaction and dilution of reactants in the solvent. This study demonstrated that the present ligands can be used as a model for further developments in catalytic processes relating to catecholase activity.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 626-64-2, you can contact me at any time and look forward to more communication. Name: Pyridin-4-ol.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem