Category: benzodioxans

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 Synthesis, structures, thermal behaviour, luminescence and magnetic properties of lanthanide complexes constructed from 2,6-dimethylbenzoic acid and 5,5′-dimethyl-2,2′-bipyridine, the main research direction is lanthanide methylbenzoate bipyridine complex preparation thermal decomposition luminescence magnetism; crystal structure lanthanide methylbenzoate bipyridine complex.Name: 5,5′-Dimethyl-2,2′-bipyridine.

Six new lanthanide complexes, with the formula [La(2,6-DMBA)3(5,5′-DM-2,2′-bipy)(H2O)]2 (1) and [Ln(2,6-DMBA)3(5,5′-DM-2,2′-bipy)]2 (Ln = Tb(2), Dy(3), Ho(4), Pr(5), Nd(6)) (2,6-DMBA = 2,6-dimethylbenzoate, 5,5′-DM-2,2′-bipy = 5,5′-dimethyl-2,2′-bipyridine) have been successfully synthesized and characterized. These title complexes have three different structural types. The structure of complex 1(type I) contains coordination water mols., and the coordination number is 8. The coordination numbers of complexes 2-4 and 5-6 are 8 and 9, showing a distorted square antiprism geometry and distorted monocapped square anti-prismatic geometry, resp. However they have the same general formula and they can be all assembled into the same 1D, 2D supramol. structures via the C-H···O hydrogen bonding interactions, which is interesting in previous lanthanide complexes. The complexes were analyzed by TG-DSC/FTIR. In addition, the visible light luminescence experiments of Tb (III) complex was carried out, and the characteristic luminescence behavior of strong green color was shown. And the fluorescence lifetime and intrinsic quantum yield were calculated The magnetic properties of complexes 2-4 were also studied, and the results showed that complex 3 and complexes 2, 4 have ferromagnetic interactions and antiferromagnetic interactions, resp.

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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, Xin; Feng, Qi; Liu, Manyu; Deng, Qianying; Jia, Zihan; Sun, Yangqian; Zuo, Xin; Shi, Junjie; Song, Hui-Hua; Yu, Hai-Tao researched the compound: 5,5′-Dimethyl-2,2′-bipyridine( cas:1762-34-1 ).Related Products of 1762-34-1.They published the article 《D/L-mandelic acid-based three new Pb(II) coordination polymers: Influence of temperature and 5,5′-dimethyl-2,2′-dipyridyl ancillary ligand on constructuring enantiomeric coordination polymers》 about this compound( cas:1762-34-1 ) in Inorganic Chemistry Communications. Keywords: lead mandelate methylbipyridine coordination polymer preparation thermal stability homochirality; fluorescence crystal structure lead mandelate methylbipyridine coordination polymer. We’ll tell you more about this compound (cas:1762-34-1).

Three new Pb(II) coordination polymers, namely [Pb2(mand)2]n (1), {[Pb(L-Hmand)(NO3)(5,5′-DM-2,2′-bipy)]·2H2O}n (2-L), {[Pb(D-Hmand)(NO3)(5,5′-DM-2,2′-bipy)]·2H2O}n (2-D) (H2mand = D/L-mandelic acid, 5,5′-DM-2,2′-bipy = 5,5′-dimethyl-2,2′-bipyridyl), have been prepared Their structures have been determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, powder X-ray diffraction and thermogravimetric analyses. Complex 1 crystallizes in the triclinic system with space group P-1, and displays a 2D layer structure. Complexes 2-L and 2-D are pairs of enantiomers. They crystallize in the same chiral space group P212121 and feature a 1D chain structure. The influence of the temperature and steric-hindrance of 5,5′-dimethyl-2,2′-dipyridyl mols. on constructing enantiomeric Pb(II) coordination polymers based on chiral mandelic acid ligands have been demonstrated. In addition, the CD (CD) spectroscopy of 2-L and 2-D exhibit obvious pos. or neg. Cotton effects indicating their homochirality. The luminescent properties of 1, 2-L and 2-D in the solid state have also been investigated.

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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 Ru(II)/N-N/PPh3 complexes as potential anticancer agents against MDA-MB-231 cancer cells (N-N = diimine or diamine), the main research direction is ruthenium dipyridylamine diimine complex preparation crystal structure; electrochem antitumor activity lipophilicity ruthenium dipyridylamine diimine complex; DNA HSA binding ruthenium dipyridylamine diimine complex.Recommanded Product: 5,5′-Dimethyl-2,2′-bipyridine.

The rational design of anticancer agents that acts in specific biol. targets is one of the most effective strategies for developing chemotherapeutic agents. Aiming at obtaining new ruthenium(II) compounds with good cytotoxicity against tumor cells, a series of new complexes of general formula [RuCl(PPh3)(Hdpa)(N-N)]Cl [PPh3 = triphenylphosphine, N-N = 2,2′-dipyridylamine (Hdpa) (1), 1,2-diaminoethane (en) (2), 2,2′-bipyridine (bipy) (3), 5,5′-dimethyl-2,2′-bipyridine (dmbipy) (4), 1,10-phenanthroline (phen) (5) and 4,7-diphenyl-1,10-phenanthroline (dphphen) (6)] were synthesized. The complexes were characterized by elemental anal. and spectroscopic techniques (IR, UV/Visible, and 1D and 2D NMR) and three of their x-ray structures were determined: [RuCl(PPh3)(Hdpa)2]Cl, [RuCl(PPh3)(Hdpa)(en)]Cl and [RuCl(PPh3)(Hdpa)(dmbipy)]Cl. All the complexes are more cytotoxic against the cancer cell line than against the non-tumor cell line, highlighting complexes 1 and 5, which have an index selectivity of 18 and 15, resp. The binding constants of compounds 1-6 with human serum albumin (HSA) were determined by tryptophan fluorescence quenching, indicating moderate to strong interactions. The binding mode of the complexes to calf thymus (CT) DNA was explored by several techniques, which reveal that only the dphphen compound 6 causes distortions in the secondary and tertiary structures of DNA. The nature of the N-N co-ligand and the presence of the PPh3 and Hdpa ligands are features that can influence the binding affinity of the complexes by the biomols. and in the cytotoxic activity of the complexes. Overall, the complexes with diimine co-ligand are much more cytotoxic than compound 2 with the aliphatic diamine.

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

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 1762-34-1, is researched, Molecular C12H12N2, about Theoretical exploration of 2,2′-bipyridines as electro-active compounds in flow batteries, the main research direction is bipyridine redox potential solubility dissociation constant flow battery.Product Details of 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

Yamaguchi, Sho; Hashimoto, Shunsuke published the article 《Mechanism of Formic Acid Disproportionation Catalyzed by an Iridium Complex Immobilized on Bipyridine-Periodic Mesoporous Organosilica: A Case Study based on Kinetics Analysis》. Keywords: mesoporous organosilica supported bipyridine periodic pentamethylcyclopentadienyliridium complex preparation catalyst; formic acid disproportionation catalyzed iridium complex immobilized bipyridine kinetics.They researched the compound: 5,5′-Dimethyl-2,2′-bipyridine( cas:1762-34-1 ).Safety of 5,5′-Dimethyl-2,2′-bipyridine. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:1762-34-1) here.

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

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Controlling the Synthesis of Metal-Organic Framework UiO-67 by Tuning Its Kinetic Driving Force, published in 2019-08-07, which mentions a compound: 1762-34-1, mainly applied to metalorganic framework UiO67 synthesis control tuning kinetic driving force, Recommanded Product: 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. As far as I know, this compound(1762-34-1)Recommanded Product: 5,5′-Dimethyl-2,2′-bipyridine can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 1762-34-1, is researched, SMILESS is CC1=CN=C(C=C1)C1=NC=C(C)C=C1, Molecular C12H12N2Journal, Article, Journal of Organic Chemistry called Isoxazole Strategy for the Synthesis of 2,2′-Bipyridine Ligands: Symmetrical and Unsymmetrical 6,6′-Binicotinates, 2,2′-Bipyridine-5-carboxylates, and Their Metal Complexes, Author is Galenko, Ekaterina E.; Novikov, Mikhail S.; Shakirova, Firuza M.; Shakirova, Julia R.; Kornyakov, Ilya V.; Bodunov, Vladimir A.; Khlebnikov, Alexander F., the main research direction is sym binicotinate bipyridine carboxylate metal complex preparation; unsym binicotinate bipyridine carboxylate metal complex preparation.HPLC of Formula: 1762-34-1.

An effective strategy was developed for the synthesis of new 2,2′-bipyridine ligands, sym. and unsym. 6,6′-binicotinates, and 2,2′-bipyridine-5-carboxylates, from 4-propargylisoxazoles. The synthesis of sym. 2,2′-disubstituted 6,6′-binicotinates was achieved using the Eglinton reaction of 5-methoxy-4-(prop-2-yn-1-yl)isoxazoles with Cu(OAc)2, followed by Fe(NTf2)2/Au(NTf2)tBuXPhos-catalyzed isomerization of the so-formed mixture of isoxazole/azirine-substituted biacetylenic intermediates. Unsym. 2,2′-disubstituted 6,6′-binicotinates were prepared via a copper-free Sonogashira coupling of 5-methoxy-4-(prop-2-yn-1-yl)isoxazoles with 6-bromonicotinates to give Me 6-(3-(5-methoxyisoxazol-4-yl)prop-1-ynyl)pyridine-3-carboxylates, followed by a transformation of the propargylisoxazole moiety of the adduct into the pyridine fragment under Fe(II)/Au(I) relay catalysis conditions. 6-(Pyrid-2-yl)nicotinates were synthesized by a Stille-type coupling of 2-(tributylstannyl)pyridine with 6-bromonicotinates. Several cyclopalladated complexes of a new series of 6,6′-binicotinates and 2,2′-bipyridine-5-carboxylates and the homoleptic Cu(I) complex were synthesized in high yields.

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 1762-34-1, is researched, SMILESS is CC1=CN=C(C=C1)C1=NC=C(C)C=C1, Molecular C12H12N2Journal, Article, Inorganic Chemistry called An Organometallic Isostere of an Amino Acid, Author is Gaire, Sanjay; Schrage, Briana R.; Ziegler, Christopher J., the main research direction is rhenium carbonyl bipyridine complex amino acid isostere preparation resolution; crystal structure rhenium carbonyl bipyridine complex amino acid isostere; mol structure rhenium carbonyl bipyridine complex amino acid isostere.SDS of cas: 1762-34-1.

Rhenium carbonyl complexes with substituted 2,2′-bipyridines I (2a-4a, X = Cl, R1, R2: H, H; EtOCO, Et; Fmoc, H; 2b-4b, X = Br, R1, R2: H, H; EtOCO, Et; Fmoc, H) were prepared as amino acid isosteres and resolved by chiral chromatog. An organometallic complex that mimics an amino acid, also known as an amino acid isostere, can be synthesized from a functionalized bipyridine ligand and a fac-[Re(CO)3]+ center. The reaction of an achiral ligand and metal results in a racemic mixture of chiral-at-metal complexes. These metal species have amine and carboxy termini, a side chain type unit that can be varied, as well as the chiral metal that is analogous to the α carbon of an amino acid. The racemic mixtures can be separated into enantiomers by chiral chromatog., and the metal complexes can be incorporated into peptides by using solid-phase peptide synthesis.

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 1762-34-1, is researched, SMILESS is CC1=CN=C(C=C1)C1=NC=C(C)C=C1, Molecular C12H12N2Journal, Article, Inorganic Chemistry called Bipyridine-Directed Syntheses of Uranyl Compounds Containing Semirigid Dicarboxylate Linkers: Diversity and Consistency in Uranyl Speciation, Author is An, Shu-wen; Mei, Lei; Hu, Kong-qiu; Li, Fei-ze; Xia, Chuan-qin; Chai, Zhi-fang; Shi, Wei-qun, the main research direction is uranyl phenylsulfonecarboxylate pyridine complex preparation photoluminescence; crystal structure uranyl phenylsulfonecarboxylate pyridine.Synthetic Route of C12H12N2.

Bipyridine organic bases are beneficial to the synthesis of novel uranyl-organic hybrid materials, but the relationship between their mol. structures and specific roles as structure-directing agents, especially for the semirigid dicarboxylate systems, is still unclear. Here we demonstrate how the bipyridine ligands direct the coordination assembly of uranyl-organic compounds with a semirigid dicarboxylate linker, 4,4′-dicarboxybiphenyl sulfone (H2dbsf), by utilizing a series of bipyridine ligands, 1,10-phenanthroline (phen), 2,2′-bipyridine (2,2′-bpy), 5,5′-dimethylbipyridine (5,5′-dmbpy), 4,4′-bipyridine (4,4′-bpy), or 1,3-di(4-pyridyl)propane (bpp). Under hydrothermal conditions, eight uranyl-organic coordination polymers (UCPs), four of which [[UO2(dbsf)(phen)] (1), [UO2(dbsf)(phen)]·H2O (1′), [U4O10(dbsf)3]2[H2bpp]2 (6), and [U4O10(dbsf)3]2[H2bpp] (6′)] were reported previously, were synthesized and divided into two types based on the chelate or template effect of these bipyridine ligands. 1, 1′, [UO2(dbsf)(2,2′-bpy)] (2), and [(UO2)2(dbsf)2(5,5′-dmbpy)2] (3) are springlike triple helixes with bipyridine ligands (phen, 2,2′-bpy, or 5,5′-dmbpy) as chelate ligands, while [U4O10(dbsf)3][H2(4,4′-bpy)] (4), [U4O10(dbsf)3]2[H(4,4′-bpy)]2[Ni(H2O)6] (5), 6, and 6′ are tetranuclear uranyl-mediated 2-fold-interpenetrating networks with 4,4′-bpy or bpp as template ligands and charge-balancing agents. The participation or not in uranyl coordination of different bipyridine ligands promotes not only diversity in uranyl speciation and final topol. structures among different classes of organic bases but also consistency for the same types of bipyridine ligands, which thus endows the possibility of the rational design of UCPs based on semirigid dicarboxylate ligands with the aid of cautiously selected bipyridine ligands.

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

Application In Synthesis 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 The Active Center of Co-N-C Electrocatalysts for the Selective Reduction of CO2 to CO Using a Nafion-H Electrolyte in the Gas Phase. Author is Ogihara, Hitoshi; Maezuru, Tomomi; Ogishima, Yuji; Inami, Yuta; Saito, Mayuko; Iguchi, Shoji; Yamanaka, Ichiro.

To contribute a solution for the global warming problem, the selective electrochem. reduction of CO2 to CO was studied in the gas phase using a [CO2(g), Co-N-C cathode | Nafion-H | Pt/C anode, H2/water] system without using carbonate solutions The Co-N-C electrocatalysts were synthesized by partial pyrolysis of precursors in inert gas, which were prepared from various N-bidentate ligands, Co(NO3)2, and Ketjenblack (KB). The most active electrocatalyst was Co-(4,4′-dimethyl-2,2′-bipyridine)/KB pyrolyzed at 673 K, denoted Co-4,4′-dmbpy/KB(673K). A high performance of CO formation (331 μmol h-1 cm-2, 217 TOF h-1) at 0.020 A cm-2 with 78% current efficiency was obtained at -0.75 V (SHE) and 273 K under strong acidic conditions of Nafion-H. Characterization studies using extended X-ray absorption fine structure (EXAFS), XPS, transmission electron microscopy-energy-dispersive X-ray (TEM-EDX), X-ray diffraction (XRD), and temperature-programmed desorption with mass spectrometry (TPD-MS) indicated the active site as Co coordinated with four N atoms bonding the surface of KB, abbreviated Co-N4-Cx structure. A model of the reduction mechanism of CO2 on the active site was proposed.

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