Day: April 15, 2022

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 Syntheses, structures and photocatalytic properties of ruthenium(II) complexes supported by a tetradentate cyclen ligand (cyclen = 1,4,7,10-tetraazacyclododecane), the main research direction is tetradentate cyclen tetraazacyclododecane ruthenium nitrogen ligand complex preparation electrochem; crystal mol structure tetraazacyclododecane ruthenium nitrogen ligand complex.HPLC of Formula: 1762-34-1.

Treatment of [(cyclen)RuCl(dmso)]Cl (cyclen = 1,4,7,10-tetraazacyclododecane, dmso = dimethylsulfoxide, 1) with zinc powder in the presence of potassium hexafluorophosphate or sodium perchlorate in acetonitrile afforded the cationic complexes [(cyclen)Ru(dmso)(MeCN)]Q2 (Q = PF6 (2), ClO4 (3)). Interaction of 1, zinc powder and 4-tert-butylpyridine or pyridine in the presence of triethylamine and sodium perchlorate gave pyridine-ruthenium(II) complexes Na[(cyclen)Ru(dmso)(4-tBupy)](ClO4)3 (4) and [(cyclen)Ru(py)2](ClO4)2 (5), resp. While reactions of 1, zinc powder and 1,10-phenanthroline (phen) or 5,5′-dimethyl-2,2′-bipyridine (5,5′-Me2bpy) in the presence of triethylamine and potassium hexafluorophosphate gave bipyridine-ruthenium(II) complexes [(cyclen)Ru(phen)](PF6)2 (6) and [(cyclen)Ru(5,5′-Me2bpy)](PF6)2 (7), resp. Complexes 1-7 are characterized by IR, UV/Vis, NMR spectroscopies along with their electrochem. properties. The mol. structures of complexes 1-7 have been established by single-crystal x-ray diffraction. The photocatalytic properties of complexes 6 and 7 with a large π-electron delocalized system for the H2 evolution by water reduction were also investigated in the paper.

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

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 Bipyridine-Directed Syntheses of Uranyl Compounds Containing Semirigid Dicarboxylate Linkers: Diversity and Consistency in Uranyl Speciation.Name: 5,5′-Dimethyl-2,2′-bipyridine.

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

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, ACS Catalysis called Dual Catalytic Platform for Enabling sp3 α C-H Arylation and Alkylation of Benzamides, Author is Rand, Alexander W.; Yin, Hongfei; Xu, Liang; Giacoboni, Jessica; Martin-Montero, Raul; Romano, Ciro; Montgomery, John; Martin, Ruben, the main research direction is benzamide arylation alkylation chemoselective enantioselective photoredox.Safety of 5,5′-Dimethyl-2,2′-bipyridine.

A dual catalytic sp3 α C-H arylation and alkylation of benzamides with organic halides is described. This protocol exhibits an exquisite site selectivity, chemoselectivity, and enantioselectivity pattern, offering a complementary reactivity mode to existing sp3 arylation or alkylations via transition metal catalysis or photoredox events.

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

Safety of 5,5′-Dimethyl-2,2′-bipyridine. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 5,5′-Dimethyl-2,2′-bipyridine, is researched, Molecular C12H12N2, CAS is 1762-34-1, about Copper-functionalized nanostructured silica-based systems: Study of the antimicrobial applications and ROS generation against gram positive and gram negative bacteria. Author is Diaz-Garcia, Diana; Ardiles, Perla R.; Diaz-Sanchez, Miguel; Mena-Palomo, Irene; del Hierro, Isabel; Prashar, Sanjiv; Rodriguez-Dieguez, Antonio; Paez, Paulina L.; Gomez-Ruiz, Santiago.

A series of copper-functionalized SBA-15 (Santa Barbara Amorphous) materials containing the ligands triethoxysilylpropylmaleamic acid (maleamic) or triethoxy-3-(2-imidazolin-1-yl)propylsilane (imidazoline) have been prepared The nanostructured silica-based systems SBA-maleamic, SBA-imidazoline, SBA-maleamic-Cu and SBA-imidazoline-Cu were characterized by several methods observing that the functionalization took place mainly inside the pores of the mesoporous system. The antimicrobial behavior of the synthesized materials against Staphylococcus aureus and Escherichia coli was tested observing a very potent activity of the copper-functionalized systems (min. inhibitory concentration (MIC) and min. bactericidal concentration (MBC) values for SBA-maleamic-Cu of ca. 31.25 μg/mL, which correspond with ca. 1.13 μg/mL of Cu). A study of the oxidative stress promoted by the synthesized materials showed that the SBA-maleamic-Cu and the SBA-imidazoline-Cu were able to increase the reactive oxygen species (ROS) production in S. aureus by 427% and 373%, resp., while this increase was slightly lower in E. coli (387 and 324%, resp.). Furthermore, an electrochem. study was carried out in order to determine if these materials interact with lysine or alanine to validate a potential antimicrobial mechanism based on the inhibition of the synthesis of the peptidoglycan of the bacterial wall. Finally, these studies were also performed to determine the potential interaction of the copper-containing materials with glutathione in order to assess if they are able to perturb the metabolism of this tripeptide.

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

HPLC of Formula: 1762-34-1. 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 Water-stable Zn-based metal-organic framework with hydrophilic-hydrophobic surface for selective adsorption and sensitive detection of oxo-anions and pesticides in aqueous medium. Author is Kaur, Harpreet; Walia, Sidharth; Karmakar, Anirban; Krishnan, Venkata; Koner, Rik Rani.

Given the importance of surface-functionalized materials with improved adsorption and detection properties for targeted applications, we report herein the design and development of a water-stable luminescent Zn-based metal-organic framework (Zn-MOF) with the hydrophobic-hydrophilic surface property. The developed luminescent Zn(II)-MOF {[Zn(PA2-)(dmbpy)](DMF)}n was synthesized via a solvothermal method using pamoic acid (PA) and 5,5′-dimethyl-2,2′-bipyridine (dmbpy) with free functional groups (hydroxyl and Me groups). Careful single-crystal structure anal. revealed a 3-dimensional hydrogen-bonded network with a one-dimensional channel and functionalized surface. The surface functionalization was achieved through rational choice of ligands bearing Me and hydroxyl groups as suitable hydrophobic and hydrophilic functionalities resp., leading to a stable MOF in the aqueous medium. The MOF was used as an adsorbent for selective adsorption of monovalent permanganate anion (MnO4-) over other polyvalent oxo-anions as well as an optical platform for the detection of oxo-anions (permanganate (MnO-4), dichromate (Cr2O72-) and chromate (CrO42-)) and pesticide (2,6-dichloro-4-nitroaniline (2,6-DCNA)) in the aqueous medium. Overall, a combination of luminescent nature and hydrophilic-hydrophobic surface property makes the developed Zn-MOF an interesting platform for environmental application.

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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 Theoretical and experimental study of torsional potentials, molecular structure (monomer and dimer), vibrational analysis and molecular characteristics of some dimethyl bipyridines, published in 2020-01-15, which mentions a compound: 1762-34-1, Name is 5,5′-Dimethyl-2,2′-bipyridine, Molecular C12H12N2, Application of 1762-34-1.

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.

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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.Category: benzodioxans.Maalej, Wassim; Jaballi, Rim; Rached, Asma Ben; Guionneau, Philippe; Daro, Nathalie; Elaoud, Zakaria published the article 《Supramolecular architectures of mononuclear nickel(II) and homobinuclear copper(II) complexes with the 5,5′-dimethyl-2,2′-bipyridine ligand: Syntheses, crystal structures and Hirshfeld surface analyses》 about this compound( cas:1762-34-1 ) in Journal of Molecular Structure. Keywords: nickel copper dimethylbipyridine complex preparation crystal structure; Hirshfeld surface analyses nickel copper dimethylbipyridine complex. Let’s learn more about this compound (cas:1762-34-1).

Two new compounds based on one mononuclear nickel(II) and one homobinuclear copper(II) complexes resp. and of general formula [Ni(dmbpy)2(CH3COO)]ClO4 (1) and [Cu2(dmbpy)2(CH3COO)3]ClO4 (2) with dmbpy = 5,5′-dimethyl-2,2′-bipyridine, were synthesized by hydrothermal treatment. Both were influenced by the coordinated acetate ion mol. The crystal and mol. structures of (1) and (2) were determined by single crystal x-ray diffraction method and both compounds were addnl. characterized by elemental and TGA, FTIR spectroscopy, powder X-ray diffraction and UV-visible. The mononuclear complex (1) shows a distorted octahedral geometry around the metal ion. However, the copper(II) compound crystallizes as an homobinuclear system, in which each of the metal ions is located into the N2O3 coordination spheres adopting a distorted square pyramidal geometry. In (2) the intramol. distance between two copper atoms is of the order of Cu1-Cu2 = 3.38(2) Å. In both crystals packing of these two complexes, H-bonding, π···π, and C-H···π interactions are operative in forming supramol. motifs. 1 Displays two 1D chains that lead to form R88(42) ring motifs, repetition of which generates a 2D supramol. network. These chains interacts with the neighboring ones via intermol. C-H···π and π···π stacking interactions, giving a 3D-stacking network (2D+1D→3D). Formation of a 2D supramol. sheet in the solid state structure of (2) is facilitated by the C-H···O, C-H···π and π···π interactions (1D+1D→2D). Hirshfeld surface anal. and theor. calculations were carried out on the two compounds C-H···O, C-H··· π and π···π stacking interactions play a paramount role in the stabilization of the supramol. architecture of (1) and (2). In addition, absorption spectra reveal their semi-conductive nature (4.19 eV for (1)·and 4.43 eV for (2)).

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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.HPLC of Formula: 1762-34-1.Jaballi, Rim; Atoui, Dhieb; Maalej, Wassim; Babaryk, Artem; Horcajada, Patricia; Ben Salem, Ridha; Elaoud, Zakaria published the article 《A new mononuclear nickel complex with 5,5′-dimethyl-2,2′-bipyridine: Synthesis, structural investigation and catalytic properties》 about this compound( cas:1762-34-1 ) in Journal of Molecular Structure. Keywords: preparation crystal structure mononuclear nickel dimethylbipyridine selenate complex; Thermal decomposition mononuclear nickel dimethylbipyridine selenate complex; Heck Sonogashira coupling reaction nickel dimethylbipyridine selenate complex catalyst. Let’s learn more about this compound (cas:1762-34-1).

The new [Ni(dmbpy)(H2O)4]SeO4 (1) complex (dmbpy = 5,5′-dimethyl-2,2′-bipyridine or C12H12N2), based on mononuclear nickel(II) and bi-at. bridging ligands was successfully synthesized by hydrothermal method. The crystals were characterized by x-ray single-crystal diffraction, crystallizing in the monoclinic system, space group P21/c. Their crystal structure consists of metallic cations octahedrally coordinated by four water mols. and two nitrogen atoms coming from the organic mol. [NiN2O4], and a selenate anion (SeO4)2-. Their crystal packing is ensured by a three-dimensional network of O-H. O hydrogen bonds between the cation and anion moieties, and π… π interactions between the pyridine rings of the organic moieties of the same layer. The thermal anal. discloses dehydration between 148° and 210°, leading to an anhydrous compound [Ni(dmbpy)]SeO4. The study of vibrational absorption and Raman scattering spectra allows bringing addnl. information to those obtained by x-ray diffraction. The optical band gap was calculated from the UV-visible absorbance spectra using classical Tauc relation which is 3.58 eV. The catalytic evaluation of [Ni(dmbpy)(H2O)4]SeO4 on Heck and Sonogashira coupling reactions, activated by ultrasonic irradiation, results in encouraging yields for a very short times with a remarkable selectivity of the form (E) with respect to (Z) during the arylation of styrene, making this complex a promising catalyst for both types of reactions. The coupling products of the Heck and Sonogashira coupling reaction ((Z)-/(E)- Stilbene and Diphenylacetylene, resp.) were examined by 13C NMR and 1H NMR. These spectroscopic measurements provide extremely valuable information on the structure of the mols. obtained.

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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 C5H9ClO2. The article 《An Organometallic Isostere of an Amino Acid》 in relation to this compound, is published in Inorganic Chemistry. Let’s take a look at the latest research on this compound (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

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 Four rare earth complexes with chlorinated carboxylic acids and bipyridine ligands: crystal structures, thermal analysis and luminescence properties, the main research direction is rare earth complex chlorinated carboxylic bipyridine crystal structure luminescence.Quality Control of 5,5′-Dimethyl-2,2′-bipyridine.

Four new complexes were successfully synthesized by solvothermal method or conventional solution method, namely [Ln2(5,5′-DM-2,2′-bipy)2 (3,4-DClBA)6 (H2O)(C2H5OH)](Ln=Sm(1), Eu(2)) and [Ln(5,5′-DM-2,2′-bipy)(3,5-DClBA)3]2 (Ln=Sm(3), Eu(4); 3,4-HDClBA=3,4-dichlorobenzoic acid, 3,5-HDClBA=3,5-dichlorobenzoic acid, 5,5′-DM-2,2′-bipy=5,5′-dimethyl-2,2′-bipyridine). Complexes 1 and 2 are isostructure and each metal center is eight-coordinated forming a distorted square antiprismatic. Complexes 1 and 2 are connected to form 2D supermol. structure by C-HCl hydrogen bonding and π-π interactions. The geometry of complex 3 is a nine coordinated distorted monocapped square antiprismatic, and the two-dimensional supramol. structure is formed by different π-π stacking interactions between mols. Thermogravimetric-IR combined technol. revealed the thermal stability and thermal decomposition mechanism of complexes 1∼4. The fluorescence and lifetime of complexes 2 and 4 were studied. The results showed that both complexes could emit the characteristic fluorescence of Eu3+ ions.

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