Tag: 200-300

Zhang, Jia-Sheng et al. published their research in Inorganic Chemistry Communications in 2008 | CAS: 15420-02-7

2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Name: 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole

Synthesis and molecular structure of hetero-metallic cluster CpCoW(CO)2(S2C2B10H10)2 and binuclear half-sandwich Co complex [Cp*Co(S2C2B10H10)]2(bpo) with dichalcogenolate o-carboranyl ligands was written by Zhang, Jia-Sheng;Jin, Guo-Xin. And the article was included in Inorganic Chemistry Communications in 2008.Name: 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole This article mentions the following:

Cobalt and cobalt-tungsten binuclear carboranyl dithiolates were prepared and characterized by crystal structure determination The mononuclear 16-electron “pseudo-aromatic” dithio-o-carboranylcobalt complex [Cp’Co(S2C2B10H10)] (1a,b; Cp’ = η5-C5H5, η5-C5Me5) were prepared by treatments of [Cp’Co(CO)I2] with the dilithium carboranyl dithiolate Li2S2C2B10H10. Both of 1a and 1b react with 2,5-bis(4-pyridyl)-1,3,4-oxadiazole (bpo) to give dicobalt complexes [Cp’Co(S2C2B10H10)[(4-NC5H4-κN)-2,5-C2N2O-(4-C5H4N-κN)]CoCp'(S2C2B10H10)] (2a,b, same Cp’). Complex 1a reacts with tungsten(0) complex W(CO)3(py)3 to produce a heterobinuclear Co-W complex [CpCo(μ-S2C2B10H10)W(CO)2(S2C2B10H10)] (3a). The mol. structures of 1b, 2b and 3a have been determined by x-ray crystallog. In the experiment, the researchers used many compounds, for example, 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7Name: 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole).

2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Name: 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Chen, Yuqiu et al. published their research in Journal of Molecular Liquids in 2022 | CAS: 65350-59-6

1-Butyl-4-methylpyridin-1-ium bromide (cas: 65350-59-6) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Application In Synthesis of 1-Butyl-4-methylpyridin-1-ium bromide

Machine learning for the prediction of viscosity of ionic liquid-water mixtures was written by Chen, Yuqiu;Peng, Baoliang;Kontogeorgis, Georgios M.;Liang, Xiaodong. And the article was included in Journal of Molecular Liquids in 2022.Application In Synthesis of 1-Butyl-4-methylpyridin-1-ium bromide This article mentions the following:

In this work, a nonlinear model that integrates the group contribution (GC) method with a well-known machine learning algorithm, i.e., artificial neural network (ANN), is proposed to predict the viscosity of ionic liquid (IL)-water mixtures After a critical assessment of all data points collected from literature, a dataset covering 8,523 viscosity data points of IL-H2O mixtures at different temperature (272.10 K-373.15 K) is selected and then applied to evaluate the proposed ANN-GC model. The results show that this ANN-GC model with 4 or 5 neurons in the hidden layer is capable to provide reliable predictions on the viscosities of IL-H2O mixtures With 4 neurons in the hidden layer, the ANN-GC model gives a mean absolute error (MAE) of 0.0091 and squared correlation coefficient (R2) of 0.9962 for the 6,586 training data points, and for the 1,937 test data points they are 0.0095 and 0.9952, resp. When this nonlinear model has 5 neurons in the hidden layer, it gives a MAE of 0.0098 and R2 of 0.9958 for the training dataset, and for the test dataset they are 0.0092 and 0.9990, resp. In addition, comparisons show that the nonlinear ANN-GC model proposed in this work has much better prediction performance on the viscosity of IL-H2O mixtures than that of the linear mixed model. In the experiment, the researchers used many compounds, for example, 1-Butyl-4-methylpyridin-1-ium bromide (cas: 65350-59-6Application In Synthesis of 1-Butyl-4-methylpyridin-1-ium bromide).

1-Butyl-4-methylpyridin-1-ium bromide (cas: 65350-59-6) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Application In Synthesis of 1-Butyl-4-methylpyridin-1-ium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Sepiol, Jadwiga et al. published their research in Acta Chimica Hungarica in 1986 | CAS: 13472-81-6

3,5-Dibromo-2-hydroxypyridine (cas: 13472-81-6) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Synthetic Route of C5H3Br2NO

Syntheses with aromatic nitramines. VI. Substituent effect in the photolytic rearrangement of nitraminopyridines was written by Sepiol, Jadwiga;Tomasik, Piotr. And the article was included in Acta Chimica Hungarica in 1986.Synthetic Route of C5H3Br2NO This article mentions the following:

Isomeric 2-nitraminopyridines I (R = 3-Me, 4-Me, 5-Me, 6-Me, 3-NO2, 5-NO2, 5-Cl, 3-CO2H) as well as 3,5-dibromo-2-nitraminopyridine (II, R1 = NO2) rearranged on irradiation with a low pressure Hg lamp (253.7 nm) in MeOH. Preference was generally noted for the migration of the side-chain NO2 group to the vicinal β-position. II (R1 = NO2) gave both II (R1 = H) and the pyridone III. The ratio of the preparative and quantum yields of the two products were 2.5 and 3.0, resp. In the experiment, the researchers used many compounds, for example, 3,5-Dibromo-2-hydroxypyridine (cas: 13472-81-6Synthetic Route of C5H3Br2NO).

3,5-Dibromo-2-hydroxypyridine (cas: 13472-81-6) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C–H in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Synthetic Route of C5H3Br2NO

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Han, Meng Ting et al. published their research in Acta Crystallographica, Section E: Structure Reports Online in 2011 | CAS: 15420-02-7

2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7) belongs to pyridine derivatives. Pyridine’s the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. Application In Synthesis of 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole

4-[5-(Pyridin-4-yl)-1,3,4-oxadiazol-2-yl]pyridinium benzoate was written by Han, Meng Ting;Zhang, Yuan. And the article was included in Acta Crystallographica, Section E: Structure Reports Online in 2011.Application In Synthesis of 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole This article mentions the following:

In the title compound, C12H9N4O+·C7H5O2–, π-π stacking interactions [centroid-centroid distance = 3.6275(14) Å] stabilize the crystal structure. The dihedral angles between the central ring and the terminal rings are 3.27(12) and 10.30(13)°. Crystallog. data and at. coordinates are given. In the experiment, the researchers used many compounds, for example, 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7Application In Synthesis of 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole).

2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7) belongs to pyridine derivatives. Pyridine’s the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. Application In Synthesis of 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Papaiconomou, Nicolas et al. published their research in Journal of Chemical & Engineering Data in 2006 | CAS: 65350-59-6

1-Butyl-4-methylpyridin-1-ium bromide (cas: 65350-59-6) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Category: pyridine-derivatives

Synthesis and roperties of seven ionic liquids containing 1-methyl-3-octylimidazolium or 1-butyl-4-methylpyridinium cations was written by Papaiconomou, Nicolas;Yakelis, Neal;Salminen, Justin;Bergman, Robert;Prausnitz, John M.. And the article was included in Journal of Chemical & Engineering Data in 2006.Category: pyridine-derivatives This article mentions the following:

Syntheses are reported for ionic liquids containing 1-methyl-3-octylimidazolium or 1-butyl-4-methylpyridinium cations and trifluoromethyl sulfonate, dicyanamide, bis(trifluoromethylsulfonyl)imide, or nonafluorobutyl sulfonate anions. Densities, m.ps., glass-transition temperatures, solubilities in water, and polarities have been measured. Ionic liquids containing pyridinium cations exhibit higher m.ps., lower solubility in water, and higher polarity than those containing imidazolium cations. In the experiment, the researchers used many compounds, for example, 1-Butyl-4-methylpyridin-1-ium bromide (cas: 65350-59-6Category: pyridine-derivatives).

1-Butyl-4-methylpyridin-1-ium bromide (cas: 65350-59-6) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Guerrero, Miguel et al. published their research in Bioorganic & Medicinal Chemistry Letters in 2012 | CAS: 6602-33-1

2,6-Dibromo-3-hydroxypyridine (cas: 6602-33-1) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds. Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. Recommanded Product: 6602-33-1

Discovery, design and synthesis of novel potent and selective sphingosine-1-phosphate 4 receptor (S1P4-R) agonists was written by Guerrero, Miguel;Urbano, Mariangela;Zhao, Jian;Crisp, Melissa;Chase, Peter;Hodder, Peter;Schaeffer, Marie-Therese;Brown, Steven;Rosen, Hugh;Roberts, Edward. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2012.Recommanded Product: 6602-33-1 This article mentions the following:

High affinity and selective small mol. agonists of the S1P4 receptor (S1P4-R) may have significant therapeutic utility in diverse disease areas including autoimmune diseases, viral infections and thrombocytopenia. A high-throughput screening (HTS) of the Mol. Libraries-Small Mol. Repository library identified 3-(2-(2,4-dichlorophenoxy)ethoxy)-6-methyl-2-nitropyridine (I) as a moderately potent and selective S1P4-R hit agonist. Design, synthesis and systematic structure-activity relationships study of the HTS-derived hit led to the development of novel potent S1P4-R agonists exquisitely selective over the remaining S1P1-3,5-Rs family members. Remarkably, the mols. herein reported provide novel pharmacol. tools to decipher the biol. function and assess the therapeutic utility of the S1P4-R. In the experiment, the researchers used many compounds, for example, 2,6-Dibromo-3-hydroxypyridine (cas: 6602-33-1Recommanded Product: 6602-33-1).

2,6-Dibromo-3-hydroxypyridine (cas: 6602-33-1) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the π-bonding aromatic system using its unhybridized p orbital. The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds. Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. Recommanded Product: 6602-33-1

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Dalence-Guzman, Maria F. et al. published their research in Bioorganic & Medicinal Chemistry Letters in 2010 | CAS: 343262-51-1

2-Bromo-5-(methylsulfonyl)pyridine (cas: 343262-51-1) belongs to pyridine derivatives. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Name: 2-Bromo-5-(methylsulfonyl)pyridine

Synthesis of novel tetrahydroisoquinoline bronchodilators was written by Dalence-Guzman, Maria F.;Toftered, Joergen;Oltner, Viveca Thornqvist;Wensbo, David;Johansson, Martin H.. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2010.Name: 2-Bromo-5-(methylsulfonyl)pyridine This article mentions the following:

The synthesis and bronchorelaxing effects of a series of novel tetrahydroisoquinoline amides are described. The compounds were evaluated for their ability to relax LTD4 contracted isolated human small airways ex-vivo. Several compounds demonstrated highly efficacious bronchorelaxing properties. Cinnamide I was selected for further studies and constitutes a promising candidate as a novel bronchorelaxing agent for the treatment of pulmonary disorders. In the experiment, the researchers used many compounds, for example, 2-Bromo-5-(methylsulfonyl)pyridine (cas: 343262-51-1Name: 2-Bromo-5-(methylsulfonyl)pyridine).

2-Bromo-5-(methylsulfonyl)pyridine (cas: 343262-51-1) belongs to pyridine derivatives. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Name: 2-Bromo-5-(methylsulfonyl)pyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Lin, Hongyan et al. published their research in Journal of Coordination Chemistry in 2011 | CAS: 15420-02-7

2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7) belongs to pyridine derivatives. Pyridine has a conjugated system of six π electrons that are delocalized over the ring. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals.Computed Properties of C12H8N4O

Syntheses, crystal structures, and electrochemical properties of two cobalt complexes constructed with benzene tricarboxylates and 2,5-bis(pyridyl)-1,3,4-oxadiazole was written by Lin, Hongyan;Mu, Bao;Wang, Xiuli. And the article was included in Journal of Coordination Chemistry in 2011.Computed Properties of C12H8N4O This article mentions the following:

Two new Co complexes based on benzene tricarboxylates 1,2,4-H3BTC (1,2,4-H3BTC = 1,2,4-benzenetricarboxylate) or 1,3,5-H3BTC (1,3,5-H3BTC = 1,3,5-benzenetricarboxylate), and the bent dipyridyl ligand 2,5-bis(3-pyridyl)-1,3,4-oxadiazole (3-bpo) or its 4-pyridyl N-donor analog 2,5-bis(4-pyridyl)-1,3,4-oxadiazole (4-bpo), formulated as [Co(1,3,5-BTC)(4-bpo)(H2O)3]2[Co(H2O)6]·10H2O (1) and [Co3(1,2,4-BTC)2(3-bpo)2(H2O)12] (2), were hydrothermally synthesized and characterized by elemental analyses, IR spectroscopy, TG analyses, and single-crystal x-ray diffraction. Structure anal. reveals that 1 is a 3-dimensional porous supramol. network based on the 1-dimensional polymer chain, in which discrete [Co(H2O)6]2+ units and lattice H2O mols. are dispersed. In 2, bridging 3-bpo and 1,2,4-BTC ligands connect cobalt ions to form a trinuclear Co unit. Adjacent trinuclear Co units are further linked by π-π stacking interactions and H-bonding interactions to form a 3-dimensional supramol. framework. Electrochem. properties of Co(II) compounds as bulk-modified carbon paste electrodes (1-CPE and 2-CPE) were studied. In the experiment, the researchers used many compounds, for example, 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7Computed Properties of C12H8N4O).

2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7) belongs to pyridine derivatives. Pyridine has a conjugated system of six π electrons that are delocalized over the ring. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals.Computed Properties of C12H8N4O

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Zhou, Xibing et al. published their research in Organic Letters in 2019 | CAS: 89978-52-9

Ethyl 2-bromoisonicotinate (cas: 89978-52-9) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. Pyridine groups exist in countless molecules, and their applications include catalysis, drug design, molecular recognition, and natural product synthesis.Recommanded Product: Ethyl 2-bromoisonicotinate

Palladium-Catalyzed Hydrocarbonylative Cyclization Enabled by Formal Insertion of Aromatic C=N Bonds into Pd-Acyl Bonds was written by Zhou, Xibing;Chen, Anrong;Du, Wei;Wang, Yawen;Peng, Yu;Huang, Hanmin. And the article was included in Organic Letters in 2019.Recommanded Product: Ethyl 2-bromoisonicotinate This article mentions the following:

An efficient new formal insertion strategy via combination of reductive elimination and oxidative addition sequence was reported, in which the transient N-acyliminium ions formed via hydrocarbonylation function as key intermediates. This strategy has enabled a novel palladium-catalyzed hydrocarbonylative cyclization of azaarene-tethered alkenes or dienes via sequential insertion of a C=C bond, CO, and a C=N bond into palladium-hydride bonds. This method provides a new and highly efficient synthetic approach to quinolizinones and its derivatives with extended π-conjugated systems, possessing tunable emission wavelengths and good photoluminescence capabilities. In the experiment, the researchers used many compounds, for example, Ethyl 2-bromoisonicotinate (cas: 89978-52-9Recommanded Product: Ethyl 2-bromoisonicotinate).

Ethyl 2-bromoisonicotinate (cas: 89978-52-9) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. Pyridine groups exist in countless molecules, and their applications include catalysis, drug design, molecular recognition, and natural product synthesis.Recommanded Product: Ethyl 2-bromoisonicotinate

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Huang, Ting-hong et al. published their research in Wuji Huaxue Xuebao in 2016 | CAS: 15420-02-7

2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Quality Control of 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole

Syntheses, structural characterization and fluorescent properties of 3D copper(I) coordination polymers with extended π···π interactions was written by Huang, Ting-hong;Zhu, Sheng-lan;Yang, Hu;Zhao, Bin;Yang, Yan. And the article was included in Wuji Huaxue Xuebao in 2016.Quality Control of 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole This article mentions the following:

Two copper(I) coordination polymers, {[Cu4(4-bpo)4(CH3CN)4](BF4)4}n (1) and {[Cu3(4-bpo)2(4,4′-bipy)(CH3CN)6](BF4)3}n (2) (4,4′-bipy = 4,4′-bipyridine, 4-bpo = 2,5-bis(4-pyridyl)-1,3,4-oxadiazole), have been synthesized and characterized by IR, 1H NMR, 19F NMR, 11B NMR and x-ray crystal structure anal. Structural anal. shows that complex 1 contains repeat “8”-shape building units that are linked to each other by the bridging coordination action of 4-bpo, forming a 3D network. The introduction of 4,4′-bipyridine results in the size variance of complex 2, which consists of 1D meso-helical chain, 2D multilayer architecture and 3D network formed by intermol. π···π interactions and hydrogen bonds. All these indicate that the change of secondary ligand might be the key of the extended supramol. networks of the lower-dimensional coordination polymers. Moreover, solid-state emission spectrum of complex 1 displays the existence of ILCT excited states. CCDC: 1043969, 1; 1043970, 2. In the experiment, the researchers used many compounds, for example, 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7Quality Control of 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole).

2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole (cas: 15420-02-7) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Halopyridines are particularly attractive synthetic building blocks in a variety of cross-coupling methods, including the Suzuki-Miyaura cross-coupling reaction.Quality Control of 2,5-Di(pyridin-4-yl)-1,3,4-oxadiazole

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem