Tag: M.W=400-500

Synthetic Route of 1102-19-8, 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. 1102-19-8, name is 1,1′-Dibenzyl-[4,4′-bipyridine]-1,1′-diium chloride, molecular formula is C24H22Cl2N2, 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.

[(BV)(Pb2AgI7)]n (2) was also prepared with a solution method. BV·2Cl (0.210 g, 0.5 mmol)was dissolved in 5 mL methanol, and then AgNO3 (0.177 g, 1.05 mmol) was added to giveAgCl. The AgCl solid was removed by filtration. Then, PbI2 (0.230 g, 0.5 mmol) was dissolvedin the filtrate with yellow suspension obtained. Methanol was removed by heating and theresultant solid was dissolved in 18 mL DMF. An additional 0.2 mmol AgNO3 (0.034 g) wasadded into the suspension and the solution was stirred for 2 h. Finally, pH was adjusted to5.0 with 55% HI and then the solution was filtered. The filtrate was allowed to stand forseven days at room temperature with dark red block crystals obtained, and the productwas washed with absolute ethanol (0.232 g, yield 53.1% based on Pb). Anal. Calcd forC24H22AgI7N2Pb2 (1749.01): C, 16.77; H, 1.25; N, 1.60%. Found: C, 16.87; H, 1.39; N, 1.65%. IR(KBr, cm-1): 3436(m), 3038(m), 1632(s), 1553(m), 1440(s), 1337(m), 1027(s), 802(s), 558(w),447(w).

According to the analysis of related databases, 1102-19-8, the application of this compound in the production field has become more and more popular.

Reference:
Article; Fan, Lintao; Li, Min; Wu, Qiqi; Lin, Xiaoyan; Wang, Yukang; Wang, Daohua; Li, Haohong; Chen, Zhirong; Journal of Coordination Chemistry; vol. 70; 1; (2017); p. 71 – 83;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 211915-84-3, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 211915-84-3, Name is Ethyl 3-(2-(((4-cyanophenyl)amino)methyl)-1-methyl-N-(pyridin-2-yl)-1H-benzo[d]imidazole-5-carboxamido)propanoate, SMILES is O=C(OCC)CCN(C1=NC=CC=C1)C(C2=CC=C3N(C)C(CNC4=CC=C(C#N)C=C4)=NC3=C2)=O, belongs to pyridine-derivatives compound. In a article, author is Afkhami, Farhad Akbari, introduce new discover of the category.

Design and construction of Zn(II) coordination polymers made by pincer type pyridine-hydrazine based ligands

A new series of five zinc (II) coordination polymers, namely [Zn(L-I)(NO3)(OH2)](n) (1), [Zn(L-I)(CH3COO)](n) (2), [Zn(L-I)(NCS)](n) (3), [Zn(L-II)(CH3COO)](n) (4), and {[Zn-2(L-II)(2)(N-3)(2)] center dot H2O}(n) (5), has been self-assembled from different zinc (II) salts and pyridine-hydrazine ligands {HLI = 2-pyridinecarbaldehyde isonicotinoyl hydrazone, and HLII = 2-acetyl-pyridyl-isonicotinoylhydrazone} and has been structurally characterized. In all compounds, the ligand is singly-deprotonated and coordinates to the zinc center in the enolic form (=N-N=C-O-). In other words, the pyridine-hydrazine ligand acted as a tetradentate negatively charged chelating-bridging ligand and coordinated to the metal centers in N, N, O pincer mode and the Para-nitrogen of the pyridine ring coordinated to the zinc center of the adjacent unit. In compounds (1)-(4) the ancillary ligands act as terminal ligands and the zinc centers bridging by the pyridine-hydrazine building blocks formed one-dimensional 1D coordination polymers, whereas the azide N-3(-) anion in compound (5) further acted as a bridging agent and led to the formation of two-dimensional 2D network. A detailed analysis of Hirshfeld surfaces and fingerprint plots allows a comparison of intermolecular interactions in (1)-(5), which are crucial in building supramolecular architectures. (C) 2019 Elsevier B.V. All rights reserved.

Reference of 211915-84-3, 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 211915-84-3.

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

Related Products of 120202-71-3, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 120202-71-3, Name is (R)-Methyl 2-(2-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetate sulfate, SMILES is O=C(OC)[C@@H](C1=CC=CC=C1Cl)N2CCC3=C(C=CS3)C2.O=S(O)(O)=O, belongs to pyridine-derivatives compound. In a article, author is Vlasenko, Nina V., introduce new discover of the category.

Insight into the active site nature of zeolite H-BEA for liquid phase etherification of isobutylene with ethanol

The nature of active acid sites of zeolite H-BEA with different Si/Al ratios (15-407) in liquid phase etherification of isobutylene with ethanol in a continuous flow reactor in the temperature range 80-180 degrees C has been explored. We describe and discuss data concerning the strength and concentration of acid sites of H-BEA obtained by techniques of stepwise (quasi-equilibrium) thermal desorption of ammonia, X-ray diffraction, low-temperature adsorption of nitrogen, FTIR spectroscopy of adsorbed pyridine and solid-state Al-27 MAS NMR. The average values of the adsorption energy of NH3 on H-BEA were experimentally determined as 63.7; 91.3 and 121.9 mmol g(-1) (weak, medium, and strong, respectively). In agreement with this, a correlation between the rate of ethyl-tert-butyl ether synthesis and the concentration of weak acid sites (E-NH3 = 61.6-68.9 kJ mol(-1)) has been observed. It was concluded that the active sites of H-BEA for this reaction are Bronsted hydroxyls representing internal silanol groups associated with octahedrally coordinated aluminum in the second coordination sphere.

Related Products of 120202-71-3, 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 120202-71-3.

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

Synthetic Route of 211915-84-3, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 211915-84-3, Name is Ethyl 3-(2-(((4-cyanophenyl)amino)methyl)-1-methyl-N-(pyridin-2-yl)-1H-benzo[d]imidazole-5-carboxamido)propanoate, SMILES is O=C(OCC)CCN(C1=NC=CC=C1)C(C2=CC=C3N(C)C(CNC4=CC=C(C#N)C=C4)=NC3=C2)=O, belongs to pyridine-derivatives compound. In a article, author is Xie, Fangxi, introduce new discover of the category.

Mechanism for Zincophilic Sites on Zinc-Metal Anode Hosts in Aqueous Batteries

The zinc-metal anode (ZMA) is a critical component of rechargeable Zn-based batteries. Zinc-dendrite formation on ZMA during cycling causes an internal short-circuit, thereby limiting long-term practical operation of batteries. A strategy of introducing zincophilic sites shows promise in suppressing dendrite growth. However, the mechanism is not understood. Here, a detailed study of the mechanism of zincophilic sites based on multiple in situ/ex situ techniques is reported. Using a carbon-host as a model system with nitrogen sites as zincophilic sites and both ex situ near-edge X-ray absorption fine structure (NEXAFS) and in situ Raman spectra, it is shown that zinc ions are bonded with pyridine sites to form Zn-N bonds. The Zn-N bonds induce spacious nucleation of zinc on carbon-hosts and suppress zinc-dendrite formation. The host with zincophilic sites exhibits a homogenous Zn deposition, together with boosted electrochemical performance. This finding underscores the impact of nitrogen zincophilic sites in suppressing zinc-dendrite formation. It is shown that bonding between zinc ions and zincophilic sites is the mechanism for zincophilic nucleation in the ZMA host. These findings are expected to be of immediate benefit to researchers in battery technologies and materials science.

Synthetic Route of 211915-84-3, 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 211915-84-3 is helpful to your research.

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

Chemistry, like all the natural sciences, begins with the direct observation of nature— in this case, of matter.120202-71-3, Name is (R)-Methyl 2-(2-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetate sulfate, SMILES is O=C(OC)[C@@H](C1=CC=CC=C1Cl)N2CCC3=C(C=CS3)C2.O=S(O)(O)=O, belongs to pyridine-derivatives compound. In a document, author is Guo, Yang, introduce the new discover, Application In Synthesis of (R)-Methyl 2-(2-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetate sulfate.

Catalytic Hydrodenitrogenation of Pyridine under Hydrothermal Conditions: A Comprehensive Study

This article focuses on the kinetic modeling and catalytic performance of hydrodenitrogenation of pyridine under hydrothermal conditions. Piperidine derivatives are the major nitrogen-containing intermediates, including 1-piperidinecarboxaldehyde, 1-piperidineethanol, and alkyl piperidines. Catalysts overall improved the formation of N-free products including 1-pentanol and 2-methyl-1-pentanol. Commercial Pd/C provided the highest pyridine conversion rate at 350 degrees C, while the homemade Ni-Ru bimetallic catalyst provided a prominent denitrogenation activity at 400 degrees C, leading to the highest 1-pentanol yield as a major denitrogenated product. Conversion of pyridine over the Ni50Ru50/C catalyst led to formation of three major alkyl piperidines (1-ethyl piperidine, 1-methyl piperidine, and 1-pentyl piperidine). These alkyl piperidine intermediates could further be converted into amino and N-free compounds. A kinetic model was developed to mathematically describe the hydrothermal HDN reaction of pyridine over the Ni50Ru50/C catalyst, which clearly captured all data trends and fitted the temporal variation of all major products. Sensitivity analysis suggested that dehydrogenation from piperidine to pyridine has a strong impact on the whole reaction pathways.

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 120202-71-3 is helpful to your research. Application In Synthesis of (R)-Methyl 2-(2-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetate sulfate.

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

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, Quality Control of 2-((4-Chlorophenyl)(piperidin-4-yloxy)methyl)pyridine 4-nitrobenzoate, 161558-45-8, Name is 2-((4-Chlorophenyl)(piperidin-4-yloxy)methyl)pyridine 4-nitrobenzoate, SMILES is ClC1=CC=C(C(C2=NC=CC=C2)OC3CCNCC3)C=C1.O=C(O)C4=CC=C([N+]([O-])=O)C=C4, belongs to pyridine-derivatives compound. In a document, author is McClain, Ethan S., introduce the new discover.

Communication-Microfluidic Electrochemical Acetylcholine Detection in the Presence of Chlorpyrifos

An amperometric acetylcholine sensor was developed for use in a microfluidic system and characterized with chlorpyrifos and its metabolite, chlorpyrifos oxon. This enzymatic sensor was highly selective for acetylcholine, with a detection limit of 0.2 mu M and sensitivity of 1.7 nA mu M-1 from 1-150 mu M. Though chlorpyrifos had no effect on sensor function, chlorpyrifos oxon significantly inhibited response across a range of concentrations (0.5-50 mu M). Inhibition was reversed by 2-pyridine aldoxime methyl chloride. This platform can be used to both quantify acetylcholine in the presence of chlorpyrifos and as a biorecognition method for chlorpyrifos oxon. (C) The Author(s) 2019. Published by ECS.

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 161558-45-8. Quality Control of 2-((4-Chlorophenyl)(piperidin-4-yloxy)methyl)pyridine 4-nitrobenzoate.

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

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 161558-45-8, Name is 2-((4-Chlorophenyl)(piperidin-4-yloxy)methyl)pyridine 4-nitrobenzoate, SMILES is ClC1=CC=C(C(C2=NC=CC=C2)OC3CCNCC3)C=C1.O=C(O)C4=CC=C([N+]([O-])=O)C=C4, in an article , author is Moreno-Fuquen, Rodelin, once mentioned of 161558-45-8, Quality Control of 2-((4-Chlorophenyl)(piperidin-4-yloxy)methyl)pyridine 4-nitrobenzoate.

Synthesis, spectroscopic (FT-IR and UV-Vis), crystallographic and theoretical studies, and a molecular docking simulation of an imatinib-like template

The aim of the present study was to report the crystal structure and spectroscopic, electronic, supramolecular and electrostatic properties of a new polymorph of 4-(pyridin- 2-yl)pyrimidin-2-amine (C9H8N4). The compound was synthesized under microwave irradiation. The single-crystal X-ray structure analysis revealed an angle of 13.36 (8) between the planes of the rings, as well as molecules linked by Nsp2-H center dot center dot center dot N hydrogen bonds forming dimers along the crystal. The material was analyzed by FT-IR vibrational spectroscopy, while a computational approach was used to elucidate the vibrational frequency couplings. The existence of Nsp2-H center dot center dot center dot N hydrogen bonds in the crystal was confirmed spectroscopically by the IR peaks from the N-H stretching vibration shifting to lower wavenumbers in the solid state relative to those in the gas phase. The supramolecular studies confirmed the formation of centrosymmetric R-2(2)(8) rings, which correspond to the formation of dimers that stack parallel to the b direction. Other weak C-H center dot center dot center dot interactions, essential for crystal growth, were found. The UV-Vis spectroscopic analysis showed a donor-acceptor process, where the amino group acts as a donor and the pyridine and pyrimidine rings act as acceptors. The reactive sites of the molecule were identified and their quantitative values were defined using the electrostatic potential model proposed in the multifunctional wave function analyzer multiwfn. The calculated interaction energies between pairs of molecules were used to visualize the electrostatic terms as the leading factors against the dispersion factors in the crystal-growth process. The docking results showed that the amino group of the pyrimidine moiety was simultaneously anchored by hydrogen-bonding interactions with the Asp427 and His407 protein residues. This compound could be key for the realization of a series of syntheses of molecules that could be used as possible inhibitors of chronic myelogenous leukemia.

Interested yet? Read on for other articles about 161558-45-8, you can contact me at any time and look forward to more communication. Quality Control of 2-((4-Chlorophenyl)(piperidin-4-yloxy)methyl)pyridine 4-nitrobenzoate.

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

Reference of 161558-45-8, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 161558-45-8, Name is 2-((4-Chlorophenyl)(piperidin-4-yloxy)methyl)pyridine 4-nitrobenzoate, SMILES is ClC1=CC=C(C(C2=NC=CC=C2)OC3CCNCC3)C=C1.O=C(O)C4=CC=C([N+]([O-])=O)C=C4, belongs to pyridine-derivatives compound. In a article, author is Rech, Jeromy James, introduce new discover of the category.

Functionalization of Benzotriazole-Based Conjugated Polymers for Solar Cells: Heteroatom vs Substituents

With the recent remarkable advances in the efficiency of organic solar cells, the need to distill key structure-property relationships for semiconducting materials cannot be understated. The fundamental design criteria based on these structure-property relationships will help realize low-cost, scalable, and high-efficiency materials. In this study, we systematically explore the impact of a variety of functional groups, including nitrogen heteroatoms, fluorine substituents, and cyano groups, on benzotriazole (TAZ)-based acceptor moieties that are incorporated into the conjugated polymers. Specifically, a pyridine heterocycle was used to replace the benzene unit of TAZ, leading to the PyTAZ polymer, and a cyano substituent was added to the benzene of the TAZ unit, resulting in the CNTAZ polymer. The PyTAZ polymer suffers from low mobility and poor exciton harvesting, driven by large and excessively pure domains when blended with PCBM. The inclusion of fluorine substituents, placed strategically along the polymer backbone, can mitigate these issues, as shown with 4FT-PyTAZ. However, when this same approach is used for the cyano-functionalized polymer (CNTAZ), the resulting polymer (4FT-CNTAZ) is overfunctionalized and suffers from impure domains and recombination issues. The cyano group has a larger impact on the TAZ core compared to the nitrogen heteroatom due to the strong electron-withdrawing strength of the cyano group. Because of this, further functionalization of the cyano-based polymers has less fruitful impact on the polymer properties and results in deterioration of the solar cell efficiency. Overall, this work highlights some of the benefits, thresholds, and limitations for functionalization of conjugated polymers for organic solar cells.

Reference of 161558-45-8, 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 161558-45-8.

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

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 120202-71-3, Name is (R)-Methyl 2-(2-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetate sulfate, molecular formula is C16H18ClNO6S2. In an article, author is Wang, Libo,once mentioned of 120202-71-3, Quality Control of (R)-Methyl 2-(2-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetate sulfate.

WC and cobalt nanoparticles embedded in nitrogen-doped carbon 3D nanocage derived from H3PW12O40@ZIF-67 for photocatalytic nitrogen fixation

Ammonia is a momentous raw chemical in modern life; however, the application of green and environmentally friendly ways to manufacture ammonia remains an enormous dilemma that requests to be conquered at this stage. In this study, we employed H3PW12O40 (PW12) encapsulated with ZIF-67 as the precursor, and calcinated it at high temperatures in an N-2 atmosphere to synthesize nitrogen-doped graphitic carbon (NGC) nanocages hybrid loaded with WC nanoparticles and Co nanoparticles (WC-Co/NGC). The NH3 formation rates of WC-Co/NGC-2 with the most palmary photocatalytic effect under visible light and simulated sunlight were 142 mu mol g(-1) h(-1) and 157 mu mol g(-1) h(-1), respectively. The formation rates approach six-fold higher than the individual Co/NGC due to WC-Co/NGC synthesizing after calcination and preserve as a 3D configuration. The specific surface area of WC-Co/NGC-2 far transcends that of Co/NGC, and the pore size distribution manifests many mesoporous structures, which can significantly increase the catalytic process and promote the reaction. Furthermore, the content of pyridine N in WC-Co/NGC-2 is higher than Co/NGC and WC, which can effectively serve as an electron operation center to assist the photocatalytic reaction, reduce the recombination of electrons and holes, and establish an eye-catching catalytic effect. This work not only synthesized WC-Co/NGC with facile tactics but also emerged a brand new speculating orientation for expanding the territory of photocatalytic nitrogen fixation materials.

Interested yet? Keep reading other articles of 120202-71-3, you can contact me at any time and look forward to more communication. Quality Control of (R)-Methyl 2-(2-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetate sulfate.

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. 161558-45-8, Name is 2-((4-Chlorophenyl)(piperidin-4-yloxy)methyl)pyridine 4-nitrobenzoate, molecular formula is C24H24ClN3O5. In an article, author is Zhuge, Xiangxue,once mentioned of 161558-45-8, COA of Formula: C24H24ClN3O5.

Synthesis of crystals of Troger’s base analogues and their fluorescence properties

A new strategy was developed to controllably grow the organic crystals of two Troger’s base analogues 2,8-(6H,12H-5,11-methanodibenzo[b,f]diazocineylene)-di(p-ethenylpyridine) (TBPP) and 5,6,11,12-tetrahydro-2,8-dimethylphenhomazine-di(p-ethenyl-N-pyridine) (PHZPP) from the same reactant TBPP. By adjusting the solvent conditions of the solvothermal system, TBPP crystals can be grown; on the other hand, from DMF-H2O systems with appropriate ratios, the methylene bridge of the Troger’s base would be removed and PHZPP crystalized. It is a good method to synthesize PHZPP from Troger’s base precursor under more moderate and greener solvothermal conditions. Furthermore, the different aggregation of TBPP and PHZPP crystals which may originate from the small differences in molecular structures resulted in distinct crystal fluorescent properties. The relationship between aggregate packing and photophysical properties was studied. In addition, PHZPP can be used as a pH probe for detecting H+ in solution state.

Interested yet? Keep reading other articles of 161558-45-8, you can contact me at any time and look forward to more communication. COA of Formula: C24H24ClN3O5.

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