Month: April 2022

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 Dehydrogenative Synthesis of 2,2′-Bipyridyls through Regioselective Pyridine Dimerization, published in 2019, which mentions a compound: 1762-34-1, mainly applied to pyridine palladium catalyst regioselective dimerization dehydrogenative silver pivalic acid; bipyridyl preparation; 2,2′-bipyridyls; C−H arylation; dehydrogenative coupling; palladium; pyridines, Safety of 5,5′-Dimethyl-2,2′-bipyridine.

2,2′-Bipyridyls have been utilized as indispensable ligands in metal-catalyzed reactions. The most streamlined approach for the synthesis of 2,2′-bipyridyls is the dehydrogenative dimerization of unfunctionalized pyridine. Herein, we report on the palladium-catalyzed dehydrogenative synthesis of 2,2′-bipyridyl derivatives The Pd catalysis effectively works with an AgI salt as the oxidant in the presence of pivalic acid. A variety of pyridines regioselectively react at the C2-positions. This dimerization method is applicable for challenging substrates such as sterically hindered 3-substituted pyridines, where the pyridines regioselectively react at the C2-position. This reaction enables the concise synthesis of twisted 3,3′-disubstituted-2,2′-bipyridyls as an underdeveloped class of ligands.

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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 Synthesis, crystal structure, thermal, luminescent property and antibacterial activity of lanthanide ternary complexes with p-chlorobenzoic acid and 5,5′-dimethyl-2,2′-bipyridine, published in 2020-01-15, which mentions a compound: 1762-34-1, mainly applied to rare earth chlorobenzoic acid bipyridine ternary complex preparation structure; antibacterial crystal structure thermal property fluorescence rare earth complex, Recommanded Product: 1762-34-1.

Four novel lanthanide coordination complexes, [La(p-ClBA)3(5,5′-DM-2,2′-bipy)H2O]n (1), [Ln(p-ClBA)3(5,5′-DM-2,2′-bipy)H2O]2 (Ln = Sm 2, Eu 3, Gd 4) were obtained from the reaction between p-chlorobenzoic acid (p-ClHBA), 5,5′-dimethyl-2,2′-bipyridine (5,5′-DM-2,2′-bipy) and lanthanide nitrate under solvothermal conditions. Single crystal X-ray diffraction anal. showed that complex 1 is a 1D chain structure, crystallized in the monoclinic system, space group P2(1)/n, and formed a 2D sheet through the C-H···O hydrogen bond interactions. While complexes 2-4 were binuclear unit and crystallizes isomorphically in the triclinic system, space group Pi̅. The binuclear unit were assembled into 1D supramol. structures through the O-H···O hydrogen bond interactions along the a-axis and formed a 2D supramol. structures through the π-π stacking interactions along the b-axis. The thermal anal. of four complexes were studied by TG-DSC/FTIR. The solid state photoluminescent properties of complex 3 were investigated at room temperature Moreover, the antibacterial activities of complexes 1-4 on Candida albicans were studied.

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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.Recommanded Product: 5,5′-Dimethyl-2,2′-bipyridine. The article 《The laser-induced potential jump: A method for rapid electron injection into oxidoreductase enzymes》 in relation to this compound, is published in Journal of Physical Chemistry B. Let’s take a look at the latest research on this compound (cas:1762-34-1).

Oxidoreductase enzymes often perform technol. useful chem. transformations using abundant metal cofactors with high efficiency under ambient conditions. The understanding of the catalytic mechanism of these enzymes is, however, highly dependent on the availability of well-characterized and optimized time-resolved anal. techniques. We have developed an approach for rapidly injecting electrons into a catalytic system using a photoactivated nanomaterial in combination with a range of redox mediators to produce a potential jump in solution, which then initiates turnover via electron transfer (ET) to the catalyst. The ET events at the nanomaterial-mediator-catalyst interfaces are, however, highly sensitive to the exptl. conditions such as photon flux, relative concentrations of system components, and pH. Here, we present a systematic optimization of these exptl. parameters for a specific catalytic system, namely, [FeFe] hydrogenase from Chlamydomonas reinhardtii (CrHydA1). The developed strategies can, however, be applied in the study of a wide variety of oxidoreductase enzymes. Our potential jump system consists of CdSe/CdS core-shell nanorods as a photosensitizer and a series of substituted bipyridinium salts as mediators with redox potentials in the range from -550 to -670 mV (vs. SHE). With these components, we screened the effect of pH, mediator concentration, protein concentration, photosensitizer concentration, and photon flux on steady-state photoreduction and hydrogen production as well as ET and potential jump efficiency. By manipulating these exptl. conditions, we show the potential of simple modifications to improve the tunability of the potential jump for application to study oxidoreductases.

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

Recommanded Product: 5,5′-Dimethyl-2,2′-bipyridine. 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 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.

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

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 A new mononuclear nickel complex with 5,5′-dimethyl-2,2′-bipyridine: Synthesis, structural investigation and catalytic properties, published in 2020-11-05, which mentions a compound: 1762-34-1, mainly applied to preparation crystal structure mononuclear nickel dimethylbipyridine selenate complex; Thermal decomposition mononuclear nickel dimethylbipyridine selenate complex; Heck Sonogashira coupling reaction nickel dimethylbipyridine selenate complex catalyst, Reference of 5,5′-Dimethyl-2,2′-bipyridine.

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

Electric Literature of C12H12N2. 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 Dual Cobalt and Photoredox Catalysis Enabled Redox-Neutral Annulation of 2-Propynolphenols. Author is Zhu, Yao; He, Yong-Qin; Tian, Wan-Fa; Wang, Mei; Zhou, Zhao-Zhao; Song, Xian-Rong; Ding, Hai-Xin; Xiao, Qiang.

A hydroxyl-assisted, organophotoredox/cobalt dual catalyzed annulation of 2-propynolphenols I [R1 = H, R2 = H, F, Cl, Br, MeO2C, Me; R1 = Cl, R2 = H; R1 = R2 = F; R3 = R4 = Me, Ph, 4-FC6H4, 3-F3CC6H4, etc.; R3 = Ph, R4 = Me, 4-ClC6H4, 2-FC6H4, 4-F3CC6H4, 2-thienyl, etc.; R3 = 4-FC6H4, R4 = 4-MeOC6H4; R3R4 = (CH2)5] to form 2-(hydroxymethyl)benzo[b]furans II has been developed by employing 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) as photosensitizer and CoCl2(PPh3)2/5,5′-dimethyl-2,2′-bipyridine as cobalt catalytic precursor. Various substrates and functional groups were tolerated. The practical applications of this reaction were further demonstrated by enlarged gram-scale and various derivations for complex heterocycles. Primary mechanistic studies suggested the involvement of cobalt-hydride mediated hydrogen atom transfer (HAT) process.

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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 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. Author is Maalej, Wassim; Jaballi, Rim; Rached, Asma Ben; Guionneau, Philippe; Daro, Nathalie; Elaoud, Zakaria.

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

COA of Formula: C12H12N2. 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 Synthesis, crystal structures and biological activity of palladium(II) complexes with 1-methyl-1H-1,2,3,4-tetrazole-5-thiol and substituted 2,2′-bipyridines. Author is Rashidipour, Arezoo; Alizadeh, Robabeh; Sadeghi Mohammadi, Sanam; Tohidlou, Mohammad; Amani, Vahid; Seyfi, Sara.

Reaction of PdCl2 with 1-methyl-1H-1,2,3,4-tetrazole-5-thiol (Hmtzt) in the presence of 5,5′-dimethyl-2,2′-bipyridine (5,5′-dmbipy) and 4,4′-dimethyl-2,2′-bipyridine ligands (4,4′-dmbipy) afforded two new Pd(II) complexes, [Pd(5,5′-dmbipy)(mtzt)2] (1) and [Pd(4,4′-dmbipy)(mtzt)2] (2), resp. The two complexes were thoroughly characterized by elemental anal., UV-vis, 1H NMR, IR, luminescence spectroscopy as well as single-crystal X-ray diffraction. Single-crystal X-ray diffraction revealed that central Pd(II) ions in and are tetra-coordinated, presenting distorted and slightly distorted square planar geometry around Pd atom for and , resp. The luminescence properties of free ligands and complexes 1 and 2, in solution, were investigated. The biol. evaluation of the Pd(II) complexes showed that they exhibited anticancer activities in a dose-dependent manner against human breast cancer cell lines. Also, their in vitro interaction with DNA were analyzed through spectrophotometric, spectrofluorometric, and gel-electrophoresis which shows the intercalation mode of binding. In conclusion, these palladium complexes represent novel anticancer drug mols. for further study.

There are many compounds similar to this compound(1762-34-1)COA of Formula: C12H12N2. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.

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

Application 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 An Organometallic Isostere of an Amino Acid. Author is Gaire, Sanjay; Schrage, Briana R.; Ziegler, Christopher J..

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

Synthetic Route of C12H12N2. 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 sensitive photoluminescent chemosensor for cyanide in water based on a zinc coordination polymer bearing ditert-butyl-bipyridine. Author is 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.

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.

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