Month: April 2022

Recommanded Product: 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 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

Yamada, Shuya; Kaneda, Takeshi; Steib, Philip; Murakami, Kei; Itami, Kenichiro published the article 《Dehydrogenative Synthesis of 2,2′-Bipyridyls through Regioselective Pyridine Dimerization》. Keywords: pyridine palladium catalyst regioselective dimerization dehydrogenative silver pivalic acid; bipyridyl preparation; 2,2′-bipyridyls; C−H arylation; dehydrogenative coupling; palladium; pyridines.They researched the compound: 5,5′-Dimethyl-2,2′-bipyridine( cas:1762-34-1 ).Recommanded Product: 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.

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 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 Nickel-Catalyzed Cross-Electrophile C(sp3)-Si Coupling of Unactivated Alkyl Bromides with Vinyl Chlorosilanes, published in 2021-10-15, which mentions a compound: 1762-34-1, Name is 5,5′-Dimethyl-2,2′-bipyridine, Molecular C12H12N2, HPLC of Formula: 1762-34-1.

Cross-electrophile C-Si coupling has emerged as a promising tool for the construction of organosilanes, but the potential of this method remains largely unexplored. Herein, we report a C(sp3)-Si coupling of unactivated alkyl bromides with vinyl chlorosilanes. The reaction proceeds under mild conditions, and it offers a new approach to alkylsilanes. Functionalities such as Grignard-sensitive groups (e.g., acid, amide, alc., ketone, and ester), acid-sensitive groups (e.g., ketal and THP protection), alkyl fluoride and chloride, aryl bromide, alkyl tosylate and mesylate, silyl ether, and amine were tolerated. Incorporation of the -Si(vinyl)R2 moiety into complex mols. and the immobilization of a glass surface by formed organosilanes were demonstrated.

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

Wang, Rui; Ranganathan, Srivathsan V.; Haruehanroengra, Phensinee; Mao, Song; Scalabrin, Matteo; Fabris, Daniele; Chen, Alan; Liu, Hehua; Hassan, Abdalla E. A.; Gan, Jianhua; Sheng, Jia 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 ).Category: benzodioxans. 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.

The facile construction of metal-DNA complexes using ‘Click’ reactions is reported here. A series of 2′-propargyl-modified DNA oligonucleotides were initially synthesized as structure scaffolds and were then modified through ‘Click’ reaction to incorporate a bipyridine ligand equipped with an azido group. These metal chelating ligands can be placed in the DNA context in site-specific fashion to provide versatile templates for binding various metal ions, which are exchangeable using a simple EDTA washing-and-filtration step. The constructed metal-DNA complexes were found to be thermally stable. Their structures were explored by solving a crystal structure of a propargyl-modified DNA duplex and installing the bipyridine ligands by mol. modeling and simulation. These metal-DNA complexes could have wide applications as novel organometallic catalysts, artificial RNases, and potential metal delivery systems.

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

Song, Yang; Pi, Yunhong; Feng, Xuanyu; Ni, Kaiyuan; Xu, Ziwan; Chen, Justin S.; Li, Zhong; Lin, Wenbin published the article 《Cerium-Based Metal-Organic Layers Catalyze Hydrogen Evolution Reaction through Dual Photoexcitation》. Keywords: metal organic layer photocatalyst hydrogen evolution photosensitizer ligand.They researched the compound: 5,5′-Dimethyl-2,2′-bipyridine( cas:1762-34-1 ).Application of 1762-34-1. 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.

Cerium-based materials such as ceria are increasingly used in catalytic reactions. We report here the synthesis of the first Ce-based metal-organic layer (MOL), Ce6-BTB, comprising Ce6 secondary building units (SBUs) and 1,3,5-benzenetribenzoate (BTB) linkers, and its functionalization for photocatalytic hydrogen evolution reaction (HER). Ce6-BTB was postsynthetically modified with photosensitizing [(MBA)Ir(ppy)2]Cl or [(MBA)Ru(bpy)2]Cl2 (MBA = 2-(5′-methyl-[2,2′-bipyridin]-5-yl)acetate, ppy = 2-phenylpyridine, bpy = 2,2′-bipyridine) to afford Ce6-BTB-Ir or Ce6-BTB-Ru MOLs, resp. The proximity of photosensitizing ligands and Ce6 SBUs in the MOLs facilitates electron transfer to drive photocatalytic HER under visible light with turnover numbers of 1357 and 484 for Ce6-BTB-Ir and Ce6-BTB-Ru, resp. Photophys. and electrochem. studies revealed a novel dual photoexcitation pathway whereby the excited photosensitizers in the MOL are reductively quenched and then transfer electrons to Ce6 SBUs to generate CeIII centers, which are further photoexcited to CeIII* species for HER.

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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, Angewandte Chemie, International Edition called Cross-Electrophile C(sp2)-Si Coupling of Vinyl Chlorosilanes, Author is Duan, Jicheng; Wang, Ke; Xu, Guang-Li; Kang, Shaolin; Qi, Liangliang; Liu, Xue-Yuan; Shu, Xing-Zhong, the main research direction is cross electrophile coupling vinyl chloro silane carbon silicon bond; cross-coupling; nickel; organosilanes; reductive coupling; vinylsilanes.COA of Formula: C12H12N2.

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

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Bipyridine-Directed Syntheses of Uranyl Compounds Containing Semirigid Dicarboxylate Linkers: Diversity and Consistency in Uranyl Speciation》. Authors are An, Shu-wen; Mei, Lei; Hu, Kong-qiu; Li, Fei-ze; Xia, Chuan-qin; Chai, Zhi-fang; Shi, Wei-qun.The article about the compound:5,5′-Dimethyl-2,2′-bipyridinecas:1762-34-1,SMILESS:CC1=CN=C(C=C1)C1=NC=C(C)C=C1).Related Products of 1762-34-1. Through the article, more information about this compound (cas:1762-34-1) is conveyed.

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

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.Cedillo-Gutierrez, Erika Lorena; Hernandez-Ayala, Luis Felipe; Torres-Gutierrez, Carolina; Reina, Miguel; Flores-Alamo, Marcos; Carrero, Julio C.; Ugalde-Saldivar, Victor M.; Ruiz-Azuara, Lena researched the compound: 5,5′-Dimethyl-2,2′-bipyridine( cas:1762-34-1 ).Name: 5,5′-Dimethyl-2,2′-bipyridine.They published the article 《Identification of descriptors for structure-activity relationship in ruthenium (II) mixed compounds with antiparasitic activity》 about this compound( cas:1762-34-1 ) in European Journal of Medicinal Chemistry. Keywords: preparation ruthenium pyridyldithioctane bipyridine phenanthroline salicylaldehydate chloro complex; crystal mol structure ruthenium pyridyldithioctane bipyridine phenanthroline salicylaldehydate complex; cyclic voltammetry ruthenium pyridyldithioctane bipyridine phenanthroline salicylaldehydate chloro complex; antiparasitic activity ruthenium pyridyldithioctane bipyridine phenanthroline salicylaldehydate chloro complex; Amebiasis; Amoebicidal activity; DFT calculations; Ruthenium (II) mixed complexes; SAR studies. We’ll tell you more about this compound (cas:1762-34-1).

Herein is presented the synthesis, characterization, electrochem. studies, DFT calculations and in vitro evaluation of amoebicidal activity in trophozoites of Entamoeba histolytica of twenty ruthenium(II) mixed compounds with general formulas: [Ru(pdto)(E-E)]Clx (E-E bidentate, either neutral or neg. charged ligands). For compounds under study, O-O, N-O and N-N auxiliary donor ligands demonstrate to have a crucial impact on the electronic properties and that it is possible to modulate the antiparasitic activity. Among analyzed complexes, only four present a better performance compared to typically used metronidazole drug (IC50 < 6.80μmol/L) to treat amebiasis disease. For studied compounds, structure-activity relations are strongly determined by either the redox potential (E1/2) of RuII/RuIII and calculated molar volume (V) of the complexes. There is still a lot of research devoted to this compound(SMILES：CC1=CN=C(C=C1)C1=NC=C(C)C=C1)Name: 5,5′-Dimethyl-2,2′-bipyridine, and with the development of science, more effects of this compound(1762-34-1) can be discovered.

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

Li, Xin; Feng, Qi; Liu, Manyu; Deng, Qianying; Jia, Zihan; Sun, Yangqian; Zuo, Xin; Shi, Junjie; Song, Hui-Hua; Yu, Hai-Tao 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》. Keywords: lead mandelate methylbipyridine coordination polymer preparation thermal stability homochirality; fluorescence crystal structure lead mandelate methylbipyridine coordination polymer.They researched the compound: 5,5′-Dimethyl-2,2′-bipyridine( cas:1762-34-1 ).Recommanded Product: 1762-34-1. 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.

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.

There is still a lot of research devoted to this compound(SMILES：CC1=CN=C(C=C1)C1=NC=C(C)C=C1)Recommanded Product: 1762-34-1, and with the development of science, more effects of this compound(1762-34-1) can be discovered.

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 A series of lanthanide complexes with 2-fluorobenzoic acid and 5,5′-dimethyl-2,2′-bipyridine: Synthesis, supramolecular structures, spectroscopy and thermal behaviour. Author is Du, Dan-Dan; Ren, Ning; Zhang, Jian-Jun.

A family of lanthanide-based self-assembling complexes constructed from 2-fluorobenzoic acid and 5,5′-dimethyl-2,2′-bipyridine have been successfully fabricated via conventional synthesis, namely, [Ln(2-FBA)3(5,5′-DM-2,2′-bipy)]2 (2-FBA = 2-fluorobenzoate, 5,5′-DM-2,2′-bipy = 5,5′-dimethyl-2,2′-bipyridine, Ln = La (1), Pr (2), Nd (3), Sm (4), Gd (5), Dy (6), Ho (7), Er (8)). The obtained complexes are investigated by elemental anal., IR spectra, Raman spectra and single-crystal x-ray diffraction. Crystallog. results exhibit that each Ln3+ ion of them is located in a distorted Muffin coordination sphere finished by seven oxygen atoms of 2-FBA ligands and two nitrogen atoms of 5,5′-DM-2,2′-bipy ligand. Interestingly, although complexes 1-6 and 7-8 have the same formula unit, the differences in hydrogen bond interactions lead to different supramol. structures. Besides, the thermal decomposition mechanism of the complexes has been studied by TG/DSC-FTIR technol. The results show that these complexes are thermally stable up to 450 K. In addition, complexes 4 and 6 both exhibit the characteristic fluorescence of lanthanide ions, i.e., complex 4 exhibits characteristic 4G5/2→6HJ/2 (J = 5, 7, 9) transitions, and complex 6 shows characteristic 4F9/2→6HJ/2 (J = 15, 13) transitions.

There is still a lot of research devoted to this compound(SMILES：CC1=CN=C(C=C1)C1=NC=C(C)C=C1)HPLC of Formula: 1762-34-1, and with the development of science, more effects of this compound(1762-34-1) can be discovered.

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