Month: April 2022

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.Rosales-Vazquez, Luis D.; Valdes-Garcia, Josue; Bazany-Rodriguez, Ivan J.; German-Acacio, Juan M.; Martinez-Otero, Diego; Vilchis-Nestor, Alfredo R.; Morales-Luckie, Raul; Sanchez-Mendieta, Victor; Dorazco-Gonzalez, Alejandro 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 《A sensitive photoluminescent chemosensor for cyanide in water based on a zinc coordination polymer bearing ditert-butyl-bipyridine》 about this compound( cas:1762-34-1 ) in Dalton Transactions. Keywords: photoluminescent chemosensor cyanide zinc coordination polymer ditert butyl bipyridine. We’ll tell you more about this compound (cas:1762-34-1).

Sensitive and direct sensing of cyanide in buffered aqueous solutions at pH = 7.0 by three new blue photoluminescent zinc-1,4-cyclohexanedicarboxylato coordination polymers bearing di-alkyl-2,2′-bipyridines has been achieved. Specifically, a Zn-polymer with the general formula: {[Zn2(H2O)2(e,a-cis-1,4-chdc)2(4,4′-dtbb)2]·7H2O}n, (1,4-chdc = 1,4-cyclohexanedicarboxylato and 4,4′-dtbb = 4,4′-ditert-butyl-2,2′-bipyridine) has been synthesized in high yield and studied as a luminescent chemosensor for halides, pseudohalides and a series of oxyanions in neutral water. CN- ions can be quant. detected by this polymer based on complete quenching (λem = 434 nm) in the sub-micromolar concentration range with a pronounced selectivity over common anions such as acetate, bromide and iodide. The quenching response (KSV = 9.7(±0.2) × 104 M-1) by the addition of CN- was also observed in the presence of typical interfering anions with a very low detection limit of 0.9μmol L-1 in buffered water at pH = 7.0. On the basis of the crystal structure and solid state CPMAS 13C-NMR correlation and 1H NMR, IR-ATR, MS-ESI(+) and SEM-EDS experiments, the optical change is attributed to the efficient release of its corresponding ditert-butyl-bipyridine, with the simultaneous formation of a zinc cyanide complex. The CPMAS 13C-NMR spectrum of the coordination polymer is consistent with the symmetry of the crystal structure. The use of flexible coordination polymers as fluorescent sensors for fast and selective detection of cyanide ions in pure aqueous solutions has been unexplored until now.

In addition to the literature in the link below, there is a lot of literature about this compound(5,5′-Dimethyl-2,2′-bipyridine)Safety of 5,5′-Dimethyl-2,2′-bipyridine, illustrating the importance and wide applicability of this compound(1762-34-1).

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

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 5,5′-Dimethyl-2,2′-bipyridine, is researched, Molecular C12H12N2, CAS is 1762-34-1, about Cross-Electrophile C(sp2)-Si Coupling of Vinyl Chlorosilanes, the main research direction is cross electrophile coupling vinyl chloro silane carbon silicon bond; cross-coupling; nickel; organosilanes; reductive coupling; vinylsilanes.Category: benzodioxans.

The cross-electrophile coupling has become a powerful tool for C-C bond formation, but its potential for forging the C-Si bond remains unexplored. Here we report a cross-electrophile Csp2-Si coupling reaction of vinyl/aryl electrophiles with vinyl chlorosilanes. This new protocol offers an approach for facile and precise synthesis of organosilanes with high mol. diversity and complexity from readily available materials. The reaction proceeds under mild and non-basic conditions, demonstrating a high step economy, broad substrate scope, wide functionality tolerance, and easy scalability. The synthetic utility of the method is shown by its efficient accessing of silicon bioisosteres, the design of new BCB-monomers, and studies on the Hiyama cross-coupling of vinylsilane products.

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

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Syntheses, reactivity, structures and photocatalytic properties of mononuclear ruthenium(II) complexes supported by 1,4,7-trimethyl-1,4,7-triazacyclononane (Me3tacn) ligands, published in 2021-02-01, which mentions a compound: 1762-34-1, Name is 5,5′-Dimethyl-2,2′-bipyridine, Molecular C12H12N2, Related Products of 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

Safety of 5,5′-Dimethyl-2,2′-bipyridine. 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 Boosting Photocatalytic Activities for Organic Transformations through Merging Photocatalyst and Transition-Metal Catalyst in Flexible Polymers. Author is Pan, Yao; Zhang, Nan; Liu, Chun-Hua; Fan, Shilu; Guo, Song; Zhang, Zhi-Ming; Zhu, Yuan-Yuan.

The merger of photocatalysis and transition-metal catalysis is of particular interest to develop useful and challenging synthetic methodologies. The catalytic activities of conventional dual-catalytic systems, however, are limited by the low synergistic efficiency between discrete catalytic centers due to their long average distance in solution Herein we carefully decorated Ir(III) photosensitizers and Ni(II) transition-metal catalyst into flexible polymers to afford two polymer-supported dual catalysts (P1-Ni and P2-Ni). These polyelectrolyte-type metallopolymers assembled into spherical polymer particles in some polar solvents. Their unique mol. and assembled structure contributed to shortening the distance between catalytic centers and increasing the local catalysts′ concentration within the catalyst, thereby greatly facilitating their electron, energy, and organic radical transfers during the catalytic cycles. The enhanced energy interaction and matched redox potential between two catalytic centers within the polymer were confirmed by steady- and transient-state luminescent spectra and cyclic voltammetry. These features enable them in catalyzing challenging organic transformations that involve efficiently incorporated photocatalytic and transition-metal catalytic cycles. We demonstrated that these two catalysts were highly effective in catalyzing C-S cross-coupling, C-O functionalized, C-N cross-coupling, and C-C cross-coupling reactions with broad substrate scopes and low catalyst loadings with turnover numbers of ~3100, ~1500, ~1400, and ~500, resp. This work provides a general methodol. to merge photosensitizer and transition-metal catalyst in a flexible polymer for significantly boosting the catalytic activity.

In addition to the literature in the link below, there is a lot of literature about this compound(5,5′-Dimethyl-2,2′-bipyridine)Safety of 5,5′-Dimethyl-2,2′-bipyridine, illustrating the importance and wide applicability of this compound(1762-34-1).

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

HPLC of Formula: 1762-34-1. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 5,5′-Dimethyl-2,2′-bipyridine, is researched, Molecular C12H12N2, CAS is 1762-34-1, about Theoretical and experimental study of torsional potentials, molecular structure (monomer and dimer), vibrational analysis and molecular characteristics of some dimethyl bipyridines. Author is Ravindranath, L.; Reddy, B. Venkatram.

This study deals with the determination of torsional potentials, mol. geometry in monomer and dimer form and vibrational assignments of 4,4′-dimethyl-2,2′-bipyridine (4DB); 5,5′-dimethyl-2,2′-bipyridine (5DB); and 6,6′-dimethyl-2,2′-bipyridine (6DB) using quantum chem. calculations carried out by d. functional theory (DFT) employing B3LYP functional in conjunction with 6-311++G(d,p) basis set. Existence of inter-mol. hydrogen bonds was predicted. Fourier Transform IR (FTIR) and Fourier Transform Raman (FT-Raman) spectra were recorded and vibrational anal. of the mols. was made using potential energy distribution (PED) and eigen vectors obtained in the computations. Observed and calculated frequencies agreed with an rms error 9.20, 8.21, and 8.33 cm-1 for 4DB, 5DB, and 6DB, resp. 1H and 13C NMR spectra were simulated using time-dependent DFT ; compared with the recorded exptl. spectra of the samples in Chloroform-d (CDCl3) solvent and observed that the chem. shifts agree well with their theor. counterparts. Electronic transitions were analyzed using exptl. and simulated UV-Vis spectra of the three mols. Mol. characteristics like HOMO-LUMO; thermodn. parameters; and mol. electrostatic surface potential (MESP) quantified with natural charges obtained by NBO anal. are also investigated.

In addition to the literature in the link below, there is a lot of literature about this compound(5,5′-Dimethyl-2,2′-bipyridine)HPLC of Formula: 1762-34-1, illustrating the importance and wide applicability of this compound(1762-34-1).

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

HPLC of Formula: 1762-34-1. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 5,5′-Dimethyl-2,2′-bipyridine, is researched, Molecular C12H12N2, CAS is 1762-34-1, about A novel Au(III) complex with the 5,5′-dimethyl-2,2′-bipyridine ligand: Synthesis, characterization, X-ray crystal structure and biological evaluation. Author is Kondori, Tahere; Ghaznavi, Habib; Afshari, Fahimeh; Shahraki, Sheida; Shahraki, Jafar; Dusek, Michal; Kucerakova, Monika; Shahraki, Omolbanin.

A novel gold complex: [Au(5 5′-dmbipy)(Cl)2] (a) which dmbipy is 5, 5′-Dimethyl-2, 2′-bipyridine was synthesized and different techniques were applied to confirm the chem. structure. The structure consists of a gold cation chelated by one neutral bipyridine ligand two (Cl-) ions and one (Cl-) ion inside and outside of the coordination sphere, resp. Thermodn. parameters (ΔH° ΔS° and ΔG°) calculated from FS-DNA interaction of complex showed that electrostatic binding have an essential function in the interaction of DNA-Au(III) complex. Addnl. relative viscosity of DNA did not change while the concentration increased. As proved by CD spectra the DNA structure changed. The synthesized compound exhibited an effective cytotoxic behavior against cancerous cell lines. The mol. docking exploration indicated the non-intercalative mode of binding which confirms the obtained results from spectroscopy viscometry and CD techniques.

In addition to the literature in the link below, there is a lot of literature about this compound(5,5′-Dimethyl-2,2′-bipyridine)HPLC of Formula: 1762-34-1, illustrating the importance and wide applicability of this compound(1762-34-1).

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

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Research Support, Non-U.S. Gov’t, BioMetals called A binuclear iron(III) complex of 5,5′-dimethyl-2,2′-bipyridine as cytotoxic agent, Author is Kondori, Tahere; Akbarzadeh-T, Niloufar; Ghaznavi, Habib; Karimi, Zeinab; Shahraki, Jafar; Sheervalilou, Roghayeh; Shahraki, Omolbanin, which mentions a compound: 1762-34-1, SMILESS is CC1=CN=C(C=C1)C1=NC=C(C)C=C1, Molecular C12H12N2, SDS of cas: 1762-34-1.

The binuclear iron(III) complex (1), namely, {[Fe(5,5′-dmbpy)2(OH2)]2(O)}(NO3)4 with a distorted octahedral coordination, formed by four nitrogen and two oxygen atoms, was previously reported by our team. In this study the DNA-binding and cytotoxicity evaluation for target complex were studied. The results indicated strong cytotoxicity activity against A549 cells comparable to cisplatin values. The binding interaction between complex 1 and FS-DNA was investigated by UV-Vis, fluorescence spectroscopy, and gel electrophoresis at physiol. pH (7.2). The DNA binding investigation has shown groove binding interactions with complex 1, therefore the hydrogen binding plays an important role in the interaction of DNA with complex 1. The calculated thermodn. parameters (ΔH°, ΔS° and ΔG°) show that hydrogen bonding and Vander-Waals forces have an important function in Fe(III) complex-DNA interaction. Moreover, DNA cleavage was studied using agarose gel electrophoresis. Viscosity measurements illustrated that relative viscosity of DNA was unchanged with the adding concentrations of Fe(III) complex. Mol. docking simulation results confirmed the spectroscopic and viscosity titration outcomes.

In addition to the literature in the link below, there is a lot of literature about this compound(5,5′-Dimethyl-2,2′-bipyridine)SDS of cas: 1762-34-1, illustrating the importance and wide applicability of this compound(1762-34-1).

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

Zhang, Sheng; Mo, Wenjiao; Zhang, Jiangwei; Zhang, Zengqi; Yin, Bing; Hu, Dengwei; Chen, Sanping published an article about the compound: 5,5′-Dimethyl-2,2′-bipyridine( cas:1762-34-1,SMILESS:CC1=CN=C(C=C1)C1=NC=C(C)C=C1 ).Computed Properties of C12H12N2. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:1762-34-1) through the article.

A series of mononuclear DyIII compounds, [Dy(tmpd)3(4,4′-dmpy)] (1), [Dy(tffb)3(4,4′-dmpy)] (2), [Dy(tffb)3(5,5′-dmpy)] (3), and [Dy(tmpd)3(5,5′-dmpy)] () [tmpd = 4,4,4-trifluoro-1-(4-methoxyphenyl)-1,3-butanedione, tffb = 4,4,4-trifluoro-1-(4-fluorophenyl)-1,3-butanedione, 4,4′-dmpy = 4,4′-dimethyl-2,2′-bipyridyl, and 5,5′-dmpy = 5,5′-dimethyl-2,2′-bipyridyl], have been synthesized by modifying β-diketonate ligands and capping N-donor co-ligands. DyIII ions in 1-4 possess N2O6 octacoordinated environments. Compounds 1 and 2 exhibit distorted trigonal dodecahedron configurations, while 3 and 4 display distorted square antiprismatic configurations. Systematic investigations of the a.c. measurements indicate the different magnetic relaxation dynamics with energy barriers (Ueff) of 66 K (1, 45 cm-1), 189 K, (2, 131 cm-1), 115 K (3, 79 cm-1), and 205 K (4, 142 cm-1). To deeply understand their different magnetic behaviors, the magnetic anisotropies of 1-4 were studied by ab initio calculations From ab initio calculations, the energies of the first excited state (KD1) are consistent with the exptl. Ueff under zero d.c. field. Compound 4 presents the largest Ueff because of the smallest gX,Y and μqTM as well as the most strong axial crystal field parameters (CFPs) among compounds 1-4. The M vs. H data exhibit butterfly-shaped hysteresis loops at 2 K for 1-4. The different coordination geometries, the magnetic dynamics, the electrostatic repulsion, and CFPs result from the different substituent effects of ligands, including the electronic effect, the steric effect, and the positions of substituted groups. The different coordination geometries, the magnetic dynamics, the electrostatic repulsion, and the crystal field parameters result from the different substituent effects of ligands, including the electronic effect, the steric effect, and the positions of substituted groups.

In addition to the literature in the link below, there is a lot of literature about this compound(5,5′-Dimethyl-2,2′-bipyridine)Computed Properties of C12H12N2, illustrating the importance and wide applicability of this compound(1762-34-1).

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

Formula: C12H12N2. 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 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

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 5,5′-Dimethyl-2,2′-bipyridine, is researched, Molecular C12H12N2, CAS is 1762-34-1, about Two nonporous MOFs with uncoordinated carboxylate groups: Fillers for enhancing the proton conductivities of nafion membrane, the main research direction is nickel cadmium bipyridine isophthalate MOF preparation crystal structure; thermal stability nickel cadmium bipyridine isophthalate MOF; proton conductivity nickel cadmium bipyridine isophthalate MOF composite membrane.SDS of cas: 1762-34-1.

Two nonporous MOFs [Ni(L)0.5 (Mbpy)(H2O)2]2 (1) and [Cd(H2L)(Mbpy)]n (2) (H4L = 5,5′-(butane-1,4-diylbis (oxy))diisophthalic acid, Mbpy = 5,5′-dimethyl-2,2′-bipyridine) were obtained through hydrothermal reactions under different pH values reaction condition. Structure analyses reveal that there are uncoordinated deprotonated and protonated carboxylate groups in compounds 1 and 2, resp., which are confirmed by IR spectra. The XRD and TG studies indicate that both of compounds exhibit good water and thermal stability. The proton conductivities of the Nafion membrane doped by compounds 1 and 2 were studied. Compound 2 can enhance the proton conductivity of the composite membrane ∼29% higher than that of pure Nafion. The water uptakes of 1/Nafion and 2/Nafion composite membrane are similar and slightly higher than that of pure Nafion membrane. The apparently high proton conductivity of 2/Nafion membrane should be attributed to the high proton d. of 2 framework, which is resulted by the protonated uncoordinated carboxylate acid groups.

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