Month: March 2022

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 5,5′-Dimethyl-2,2′-bipyridine, is researched, Molecular C12H12N2, CAS is 1762-34-1, about Controlling the Synthesis of Metal-Organic Framework UiO-67 by Tuning Its Kinetic Driving Force.Reference of 5,5′-Dimethyl-2,2′-bipyridine.

The successful synthesis of metal-organic framework (MOF) compounds relies on an intricate interplay between the components of the synthesis liquor at the given synthesis conditions. The interdependence of modulator, linker, and solvent amounts in the synthesis of the Zr-based MOF, UiO-67, is explored. Probably control of linker vacancy defects in UiO-67 is feasible by tuning the ratios of these components, and such control derives from recognizing the kinetic driving forces during MOF crystal growth. Linker vacancy defects (and modulator mols. occupying linker sites) can be reduced by limiting the solvent amount to maintain a saturated concentration of linker throughout the synthesis. The method enables formation of UiO-67 with an ideal 1:1 ratio between Zr and the 4,4′-biphenyldicarboxylic acid linker, without surplus linker in the mother liquor or addnl. post-synthetic steps, and reduces the amount of DMF solvent to <20% the amount in previously reported procedures. Here is a brief introduction to this compound(1762-34-1)Reference of 5,5′-Dimethyl-2,2′-bipyridine, if you want to know about other compounds related to this compound(1762-34-1), you can read my other articles.

Reference:
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

Name: 5,5′-Dimethyl-2,2′-bipyridine. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 5,5′-Dimethyl-2,2′-bipyridine, is researched, Molecular C12H12N2, CAS is 1762-34-1, about Mechanism of Formic Acid Disproportionation Catalyzed by an Iridium Complex Immobilized on Bipyridine-Periodic Mesoporous Organosilica: A Case Study based on Kinetics Analysis. Author is Yamaguchi, Sho; Hashimoto, Shunsuke.

This work investigated the kinetics of formic acid (FA) disproportionation using an Ir complex immobilized on bipyridine-periodic mesoporous organosilica (BPy-PMO). The selectivity for methanol (MeOH) is increased using this catalyst compared to conventional homogeneous Ir complexes. This enhanced selectivity is attributed to the retention of H2 and CO2 generated by the competing FA dehydrogenation in PMO mesochannels having a high aspect ratio. However, no direct evidence for this process was previously obtained. The present work clarified the unique catalysis mechanism associated with a PMO catalyst exhibiting higher MeOH selectivity based on a hypothesis that the generation of MeOH via FA hydrogenation is promoted by the confinement of H2 in the PMO pores. The results obtained from the present kinetics study and data regarding H2 diffusion in the PMO pores strongly support this hypothesis.

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Reference:
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Li, Han; Sheng, Jie; Wu, Bing-Bing; Li, Yan; Wang, Xi-Sheng researched the compound: 5,5′-Dimethyl-2,2′-bipyridine( cas:1762-34-1 ).Safety of 5,5′-Dimethyl-2,2′-bipyridine.They published the article 《Nickel-Catalyzed Cross-Coupling of Ethyl Chlorofluoroacetate with Aryl Bromides》 about this compound( cas:1762-34-1 ) in Chemistry – An Asian Journal. Keywords: nickel catalyzed cross coupling ethyl chlorofluoroacetate aryl bromide; aryl halides; cross-coupling; ethyl chlorofluoroacetate; monofluoroacetation; nickel. We’ll tell you more about this compound (cas:1762-34-1).

A combinatorial nickel-catalyzed monofluoroalkylation of aryl bromides with the industrial raw regent Et chlorofluoroacetate has been developed. The two key factors to successful conversion are the combination of nickel with readily available nitrogen and phosphine ligands and the using of a mixture of different solvents. Mechanistic investigations indicated a new zinc regent might generated in situ and be involved in the reaction process.

Here is a brief introduction to this compound(1762-34-1)Safety of 5,5′-Dimethyl-2,2′-bipyridine, if you want to know about other compounds related to this compound(1762-34-1), you can read my other articles.

Reference:
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 5,5′-Dimethyl-2,2′-bipyridine(SMILESS: CC1=CN=C(C=C1)C1=NC=C(C)C=C1,cas:1762-34-1) is researched.Computed Properties of C11H21BF4N2O2. The article 《Theoretical exploration of 2,2′-bipyridines as electro-active compounds in flow batteries》 in relation to this compound, is published in Physical Chemistry Chemical Physics. Let’s take a look at the latest research on this compound (cas:1762-34-1).

Compounds from the 2,2′-bipyridine mol. family were investigated for use as redox-active materials in organic flow batteries. For 156 2,2′-bipyridine derivatives reported in the academic literature, we calculated the redox potential, the pKa for the second deprotonation reaction, and the solubility in aqueous solutions Using exptl. data on a small subset of derivatives, we were able to calibrate our calculations We find that functionalization with electron-withdrawing groups leads to an increase of the redox potential and to an increase of the mol. acidity (as expressed in a reduction of the pKa value for the second deprotonation step). Furthermore, calculations of solubility in water indicate that some of the studied derivatives have adequate solubility for flow battery applications. Based on an anal. of the physico-chem. properties of the 156 studied compounds, we down-select five mols. with carbonyl- and nitro-based functional groups, whose parameters are especially promising for potential applications as neg. redox-active materials in organic flow batteries.

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Reference:
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 5,5′-Dimethyl-2,2′-bipyridine( cas:1762-34-1 ) is researched.Safety of 5,5′-Dimethyl-2,2′-bipyridine.Zhou, Meng-Xue; Ning, Ren; Hu, Jin-Yong; Zhang, Jian-Jun; Wang, Da-Qi published the article 《Construction of lanthanide complexes based on 3,4-dichlorobenzoic acid and 5,5′-dimethyl-2,2′-bipyridine: Supramolecular structures, thermodynamic properties and luminescent behaviors》 about this compound( cas:1762-34-1 ) in Polyhedron. Keywords: terbium gadolinium dichlorobenzoate dimethylbipyridine supramol preparation thermodn luminescence; crystal mol structure terbium gadolinium dichlorobenzoate dimethylbipyridine supramol complex. Let’s learn more about this compound (cas:1762-34-1).

Two novel lanthanide complexes, [Ln2(3,4-DClBA)6(5,5′-DM-2,2′-bipy)2(C2H5OH)(H2O)] (Ln = Gd (1), Tb (2)); 3,4-DClBA: 3,4-dichlorobenzoate; 5,5′-DM-2,2′-bipy: 5,5′-dimethyl-2,2′-bipyridine have been hydrothermally synthesized and structurally characterized by elemental anal., IR spectrum, thermal anal. and single x-ray diffraction techniques. The binuclear complexes 1-2 are isomorphous and crystallize in the triclinic crystal system and P1̅ space group, and each metal center is eight-coordinated with distorted square antiprismatic mol. geometry. The structure of this type of complex is unique in that the solvent ethanol mol. participates in the coordination. Complexes 1-2 are stitched together via π-π stacking interactions and hydrogen bonding interactions to form the 1D, 2D supramol. structures. The thermal decomposition mechanisms of two complexes were obtained by TG-DSC/FTIR techniques. The molar heat capacities of the complexes 1 and 2 are measured by a DSC instrument over the temperature range from 255.15 to 323.15 K and thermodn. functions were calculated by fitted polynomial and thermodn. equations. The luminescence studies demonstrate that complex 2 exhibits the characteristic emission of Tb3+ ion (5D4 → 7F6-3).

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Reference:
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

HPLC of Formula: 1762-34-1. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 5,5′-Dimethyl-2,2′-bipyridine, is researched, Molecular C12H12N2, CAS is 1762-34-1, about Construction of lanthanide complexes based on 3,4-dichlorobenzoic acid and 5,5′-dimethyl-2,2′-bipyridine: Supramolecular structures, thermodynamic properties and luminescent behaviors. Author is Zhou, Meng-Xue; Ning, Ren; Hu, Jin-Yong; Zhang, Jian-Jun; Wang, Da-Qi.

Two novel lanthanide complexes, [Ln2(3,4-DClBA)6(5,5′-DM-2,2′-bipy)2(C2H5OH)(H2O)] (Ln = Gd (1), Tb (2)); 3,4-DClBA: 3,4-dichlorobenzoate; 5,5′-DM-2,2′-bipy: 5,5′-dimethyl-2,2′-bipyridine have been hydrothermally synthesized and structurally characterized by elemental anal., IR spectrum, thermal anal. and single x-ray diffraction techniques. The binuclear complexes 1-2 are isomorphous and crystallize in the triclinic crystal system and P1̅ space group, and each metal center is eight-coordinated with distorted square antiprismatic mol. geometry. The structure of this type of complex is unique in that the solvent ethanol mol. participates in the coordination. Complexes 1-2 are stitched together via π-π stacking interactions and hydrogen bonding interactions to form the 1D, 2D supramol. structures. The thermal decomposition mechanisms of two complexes were obtained by TG-DSC/FTIR techniques. The molar heat capacities of the complexes 1 and 2 are measured by a DSC instrument over the temperature range from 255.15 to 323.15 K and thermodn. functions were calculated by fitted polynomial and thermodn. equations. The luminescence studies demonstrate that complex 2 exhibits the characteristic emission of Tb3+ ion (5D4 → 7F6-3).

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Reference:
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

Related Products of 1762-34-1. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 5,5′-Dimethyl-2,2′-bipyridine, is researched, Molecular C12H12N2, CAS is 1762-34-1, about Triazole-coumarin centered star-shaped polymer: Structural characterizations and electrical properties of graphene composites. Author is Biryan, Fatih.

In present study, new three-arm initiator containing coumarin group and new 4-(3-(4-methoxyphenyl)acryloyl) Ph acrylate (MPAC) was synthesized. Three-armed star-shaped polymer was obtained by polymerization using ATRP method from the chlorine ends of the initiator. The structure characterization was performed by FT-IR, 1H-NMR, 13C-NMR spectroscopy techniques. Thermal analyzes were performed by using thermogravimetry (TGA) and differential scanning calorimetry anal. (DSC) techniques in a nitrogen atm. Thermal decomposition activation energy (Ea) of star polymer was determined by the Flynn-Wall-Ozawa and Kissinger methods. The average activation energy in the range of 0.02-0.3 conversion range was determined as 115.28 kJ/mol and 152.72 kJ/mol, resp. Polymer composites were prepared by adding graphene particles in different ratios (0.5%, 1.0%, 2.0%, and 4.0% by weight) to the polymer matrix. The dielec. properties of star polymer and graphene composites were investigated in a range of 100 Hz-20 kHz frequency. Besides, the dielec. properties of the pure polymer were examined as a function of frequency at different temperatures (25°C, 40°C, 55°C, 70°C,). Furthermore, the polymer/4% graphene composite/p-Si thin-film heterojunction diode properties were investigated using current-voltage (I-V) anal. at room temperature in dark. The elec. parameters of heterojunction diode such as the rectification ratio (RR), barrier height (Φb) and ideality factor (n) were investigated. The frequency dependence of capacitance and the role of interface states were examined The results showed that chalcone substituted three-arm star polymer/4% graphene composite has a diode and capacitor characteristic.

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Reference:
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: (S)-tert-Butyl 2-methyl-3-oxopiperazine-1-carboxylate( cas:1799971-34-8 ) is researched.Name: (S)-tert-Butyl 2-methyl-3-oxopiperazine-1-carboxylate.Rudolph, Dale A.; Alcazar, Jesus; Ameriks, Michael K.; Anton, Ana Belen; Ao, Hong; Bonaventure, Pascal; Carruthers, Nicholas I.; Chrovian, Christa C.; De Angelis, Meri; Lord, Brian; Rech, Jason C.; Wang, Qi; Bhattacharya, Anindya; Andres, Jose Ignacio; Letavic, Michael A. published the article 《Novel methyl substituted 1-(5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)methanones are P2X7 antagonists》 about this compound( cas:1799971-34-8 ) in Bioorganic & Medicinal Chemistry Letters. Keywords: dihydrotriazolopyrazinylmethanone preparation purinoceptor antagonist antidepressant anticonvulsant; 5,6-Dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)methanones; CNS; Depression; P2X7. Let’s learn more about this compound (cas:1799971-34-8).

The optimization efforts that led to a novel series of Me substituted 1-(5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)methanones that are potent rat and human P2X7 antagonists are described. These efforts resulted in the discovery of compounds with good drug-like properties that are capable of high P2X7 receptor occupancy in rat following oral administration, including compounds I (P2X7 IC50 = 7.7 nM) and II (P2X7 IC50 = 7.7 nM). These compounds are expected to be useful tools for characterizing the effects of P2X7 antagonism in models of depression and epilepsy, and several of the compounds prepared are candidates for effective P2X7 PET tracers.

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Reference:
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

COA of Formula: C12H12N2. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 5,5′-Dimethyl-2,2′-bipyridine, is researched, Molecular C12H12N2, CAS is 1762-34-1, about An aerobic oxidation of alcohols into carbonyl synthons using bipyridyl-cinchona based palladium catalyst. Author is Cheedarala, Ravi Kumar; Chidambaram, Ramasamy R.; Siva, Ayyanar; Song, Jung Il.

An aerobic oxidation of primary and secondary alcs. RCH2OH (R = 2-methylphenyl, cyclohexyl, naphthalen-1-yl, pyridin-4-yl, etc.) to resp. aldehydes RCHO and ketones RCO using a bipyridyl-cinchona alkaloid based palladium catalytic system (PdAc-5) I·2Br using oxygen at moderate pressure was reported. The PdAc-5 catalyst was analyzed using SEM, EDAX, and XPS anal. The above catalytic system is used in experiments for different oxidation systems which include different solvents, additives, and bases which are cheap, robust, non-toxic, and com. available on the industrial bench. The obtained products are quite appreciable in both yield and selectivity (70-85%). In addition, numerous important studies, such as comparisons with various com. catalysts, solvent systems, mixture of solvents, and catalyst mole%, were conducted using PdAc-5. The synthetic strategy of oxidation of alc. into carbonyl compounds was well established and all the products were analyzed.

Here is a brief introduction to this compound(1762-34-1)COA of Formula: C12H12N2, if you want to know about other compounds related to this compound(1762-34-1), you can read my other articles.

Reference:
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 5,5′-Dimethyl-2,2′-bipyridine( cas:1762-34-1 ) is researched.HPLC of Formula: 1762-34-1.Qian, Bing-Feng; Wang, Jun-Ling; Jia, Ai-Quan; Shi, Hua-Tian; Zhang, Qian-Feng published the article 《Syntheses, reactivity, structures and photocatalytic properties of mononuclear ruthenium(II) complexes supported by 1,4,7-trimethyl-1,4,7-triazacyclononane (Me3tacn) ligands》 about this compound( cas:1762-34-1 ) in Inorganica Chimica Acta. Keywords: preparation mononuclear ruthenium trimethyltriazacyclononane bipyridine complex; crystal structure mononuclear ruthenium trimethyltriazacyclononane bipyridine complex; cyclic voltammetry mononuclear ruthenium trimethyltriazacyclononane bipyridine complex; water slitting photocatalyst mononuclear ruthenium trimethyltriazacyclononane bipyridine complex. Let’s learn more about this compound (cas:1762-34-1).

Treatment of ruthenium(II) precursor [(Me3tacn)Ru(DMSO)Cl2] (Me3tacn = 1,4,7-trimethyl-1,4,7-triazacyclononane, DMSO = dimethylsulfoxide) (1) with concentrated HCl in the presence of air afforded a ruthenium(III) complex [(Me3tacn)RuCl3·H2O] (2). Reaction of 2, 2,2′-bipyridine or substituted 2,2′-bipyridine, and zinc metal powder in the presence of sodium perchlorate gave the corresponding cationic aquaruthenium(II) complex [(Me3tacn)Ru(R-bpy)(H2O)](ClO4)2 (bpy = 2,2′-bipyridine, R = H, 3; 4,4′-Me2, 4; 5,5′-Me2, 5; 4,4′-di-tBu, 6). The hydrate ligand in complexes 3 and 5 could be substituted by acetonitrile or pyridine forming complexes [(Me3tacn)Ru(5,5′-Me2-bpy)(MeCN)](ClO4)2 (7) and [(Me3tacn)Ru(R-bpy)(py)](ClO4)2 (py = pyridine, R = H (8), R = 5,5′-Me2 (9)), resp. Interaction of [(Me3tacn)Ru(bpy)(H2O)](PF6)2 with phenylacetylene in methanol afforded a ruthenium-carbene complex [(Me3tacn)(bpy)Ru:C(OMe)CH2Ph](PF6)2 (10). All complexes are well characterized by IR, UV/visible, and NMR spectroscopies. The mol. structures of 1, 1·2H2O, 4·2H2O, 7, 8, 9, and 10 were also established by single-crystal X-ray diffraction. The photocatalysis properties of complexes 3, 5, and 6 for H2 evolution by water splitting were also studied.

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Reference:
Benzodioxan,
1,4-Benzodioxane | C8H8O2 – PubChem