Bao, Yapeng’s team published research in Organic Letters in 2020 | CAS: 59290-82-3

3-Nitroisonicotinic acid(cas: 59290-82-3) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.COA of Formula: C6H4N2O4

《A B2(OH)4-Mediated Synthesis of 2-Substituted Indazolone and Its Application in a DNA-Encoded Libraryã€?was written by Bao, Yapeng; Deng, Zongfa; Feng, Jing; Zhu, Weiwei; Li, Jin; Wan, Jinqiao; Liu, Guansai. COA of Formula: C6H4N2O4 And the article was included in Organic Letters on August 21 ,2020. The article conveys some information:

Indazolone cores are among the most common structural components in medicinal chem. and can be found in many biol. active mols. In this report, a mild and efficient approach to 2-substituted indazolones via B2(OH)4-mediated reductive N-N bond formation is developed. This strategy features mild conditions, no request for a metal catalyst, and a wide scope for both aliphatic and aromatic amines. Meanwhile, this method was further successfully applied on DNA to construct indazolone cores for a DNA-encoded library. This will enable the production of a very attractive indazolone-cored library from simple amines and scaffolds, which will provide considerable diversity. The experimental part of the paper was very detailed, including the reaction process of 3-Nitroisonicotinic acid(cas: 59290-82-3COA of Formula: C6H4N2O4)

3-Nitroisonicotinic acid(cas: 59290-82-3) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.COA of Formula: C6H4N2O4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Cui, Jing-Wang’s team published research in ChemSusChem in 2022 | CAS: 112881-51-3

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) belongs to pyridine derivatives. 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. Electric Literature of C20H14N4

《Improved Effect of Metal Coordination on Molecular Oxygen Activation for Selective Aerobic Photooxidationã€?was written by Cui, Jing-Wang; Rao, Cai-Hui; Jia, Meng-Ze; Yao, Xin-Rong; Zhang, Jie. Electric Literature of C20H14N4 And the article was included in ChemSusChem on April 22 ,2022. The article conveys some information:

A pyridinium-based complex with environment-friendly and earth-abundant ZnII ion was synthesized and explored as a green catalyst applied in activating mol. oxygen for the simple and efficient photooxidation of alcs. into aldehydes under additive-free and mild conditions. The metal coordination was conducive to promoting the electron transfer efficiency and introducing the heavy-atom effect for the increased generation of ·O2- and 1O2. Accordingly, improved photocatalytic performance of this complex compared to its precursor, no matter activity or selectivity, was obtained, facilitating the transformation of alcs. into aldehydes in a sustainable way. After reading the article, we found that the author used 4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Electric Literature of C20H14N4)

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) belongs to pyridine derivatives. 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. Electric Literature of C20H14N4

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Suga, Hiroyuki’s team published research in Tetrahedron in 2010 | CAS: 410092-98-7

2,6-Bis((4S,5S)-4,5-diphenyl-4,5-dihydrooxazol-2-yl)pyridine(cas: 410092-98-7) 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. Category: pyridine-derivativesThe lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds.

《Inverse electron demand asymmetric cycloadditions of cyclic carbonyl ylides catalyzed by chiral Lewis acids-Scope and limitations of diazo and olefinic substratesã€?was written by Suga, Hiroyuki; Higuchi, Satoshi; Ohtsuka, Motoo; Ishimoto, Daisuke; Arikawa, Tadashi; Hashimoto, Yuta; Misawa, Shunta; Tsuchida, Teruko; Kakehi, Akikazu; Baba, Toshihide. Category: pyridine-derivatives And the article was included in Tetrahedron on April 17 ,2010. The article conveys some information:

High enantioselectivities (94-96% ee) were obtained for the inverse electron-demand 1,3-dipolar cycloadditions between cyclohexyl vinyl ether and 2-benzopyrylium-4-olate generated via Rh2(OAc)4-catalyzed decomposition of o-methoxycarbonyl-α-diazoacetophenone. The reactions were effectively catalyzed by Eu(OTf)3, Ho(OTf)3, or Gd(OTf)3 complexes (10 mol %) of chiral 2,6-bis[(4S,5S)-4,5-diphenyl-2-oxazolinyl]pyridine. The reactions with the other electron-rich dipolarophiles such as allyl alc., 2,3-dihydrofuran, and butyl-tert-butyldimethylsilylketene acetal showed moderate enanantioselectivities (60-73% ee). Good to high enantioselectivities (73-97% ee) were also obtained for the cycloadditions between 3-acyl-2-benzopyrylium-4-olates, generated from Me 2-(2-diazo-1,3-dioxoalkyl)benzoates and Bu or cyclohexyl vinyl ethers, in the presence of binaphthyldiimine (BINIM)-Ni(II) complexes (10 mol %). Under similar conditions, the reaction between Me 2-(2-diazo-1,3-dioxohexyl)benzoate and 2,3-dihydrofuran was highly endo-selective, and moderately enantioselective (70% ee). For the BINIM-Ni(II)-catalyzed reactions of cyclohexyl vinyl ether, the use of an epoxyindanone as the 3-acyl-2-benzopyrylium-4-olate precursor revealed that the chiral Lewis acid can function as a catalyst for asym. induction. The scope of the cyclic carbonyl ylides was extended to those generated from 1-diazo-2,5-pentanedione derivatives, which were reacted with Bu or TBS vinyl ether and catalyzed using the (4S,5S)-Pybox-4,5-Ph2-Lu(OTf)3 complex to give good levels of asym. inductions (75-84% ee). Absolute structure of I was determined by XRD. In addition to this study using 2,6-Bis((4S,5S)-4,5-diphenyl-4,5-dihydrooxazol-2-yl)pyridine, there are many other studies that have used 2,6-Bis((4S,5S)-4,5-diphenyl-4,5-dihydrooxazol-2-yl)pyridine(cas: 410092-98-7Category: pyridine-derivatives) was used in this study.

2,6-Bis((4S,5S)-4,5-diphenyl-4,5-dihydrooxazol-2-yl)pyridine(cas: 410092-98-7) 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. Category: pyridine-derivativesThe lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Xi, Jing’s team published research in Dalton Transactions in 2021 | CAS: 1134-35-6

4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6) is used in the synthesis of a series of o-phenanthroline-substituted ruthenium(II) complexes.Reference of 4,4′-Dimethyl-2,2′-bipyridine Furthermore, 4,4′-Dimethyl-2,2′-bipyridine is used as a chemical Intermediate. It can be used for the determination of ferrous and cyanide compounds.

《Regulating the magnetic dynamics of mononuclear β-diketone Dy(III) single-molecule magnets through the substitution effect on capping N-donor coligandsã€?was written by Xi, Jing; Ma, Xiufang; Cen, Peipei; Wu, Yuewei; Zhang, Yi-Quan; Guo, Yan; Yang, Jinhui; Chen, Lei; Liu, Xiangyu. Reference of 4,4′-Dimethyl-2,2′-bipyridineThis research focused ontrifluoronaphthylbutanedione mononuclear beta diketone dysprosium nitrogen donor complex; single mol magnet substitution effect trifluoronaphthylbutanedione dysprosium nitrogen donor. The article conveys some information:

A series of five mononuclear β-diketonate-Dy(III) complexes, with formulas Dy(ntfa)3(Br-bpy) (1), Dy(ntfa)3(Br2-bpy) (2), Dy(ntfa)3(5,5-(CH3)2-bpy) (3), Dy(ntfa)3(4,4-((CH3)3)2-bpy) (4) and Dy(ntfa)3(4,4-(CH3)2-bpy) (5) (ntfa = 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione, Br-bpy = 5-bromo-2,2′-bipyridine, Br2-bpy = 4,4′-dibromo-2,2′-bipyridine, 5,5-(CH3)2-bpy = 5,5′-di-methyl-2,2′-bipyridine, 4,4-((CH3)3)2-bpy = 4,4′-di-tert-butyl-2,2′-bipyridine, and 4,4-(CH3)2-bpy = 4,4′-di-methyl-2,2′-bipyridine), have been prepared by altering the capping N-donor coligands. Dy(III) ions in all complexes possess N2O6 octa-coordinated environments, displaying a distorted square antiprismatic D4d symmetry in complexes 1-4, as well as a triangular dodecahedron D2d symmetry in 5. Magnetic investigations evidence the SIM behavior in the five complexes with the energy barriers (Ueff) of 104.19 K (1), 122.93 K (2), 84.20 K (3), 64.16 K (4) and 80.23 K (5) under zero applied dc field. The potential QTM effects in the title complexes are successfully suppressed in the presence of the extra applied fields. The crystal field parameters and orientations of the magnetic easy axes were obtained from the simulation of the magnetic data and the electrostatic model calculation The distinct electronic effects originating from the subtle changes of the substituents on the capping N-donor coligands induce varying coordination microenvironments and geometries on the Dy(III) sites, further drastically impacting the overall magnetic properties of the title complexes. The disparities of the uniaxial anisotropy and the magnetic dynamics for 1-5 have been elucidated by ab initio calculations as well. In the experiment, the researchers used 4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6Reference of 4,4′-Dimethyl-2,2′-bipyridine)

4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6) is used in the synthesis of a series of o-phenanthroline-substituted ruthenium(II) complexes.Reference of 4,4′-Dimethyl-2,2′-bipyridine Furthermore, 4,4′-Dimethyl-2,2′-bipyridine is used as a chemical Intermediate. It can be used for the determination of ferrous and cyanide compounds.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Liu, Yantao’s team published research in Organic Letters in 2020 | CAS: 94928-86-6

fac-Tris(2-phenylpyridine)iridium(cas: 94928-86-6) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.Recommanded Product: fac-Tris(2-phenylpyridine)iridium

《Visible-Light Photoredox-Catalyzed Formal [5 + 1] Cycloaddition of N-Tosyl Vinylaziridines with Difluoroalkyl Halidesã€?was written by Liu, Yantao; Luo, Wen; Wang, Zhenjie; Zhao, Yuxin; Zhao, Jingjing; Xu, Xuejun; Wang, Chaojie; Li, Pan. Recommanded Product: fac-Tris(2-phenylpyridine)iridiumThis research focused onvisible light photoredox formal cycloaddition tosyl vinylaziridine difluoroalkyl halide; pyridine preparation photoredox catalyst. The article conveys some information:

A visible-light photoredox-catalyzed formal [5 + 1] cycloaddition of N-tosyl vinylaziridines with difluoroalkyl halides as unique C1 synthons was developed. The procedure provides an efficient and practical method to synthesize diverse pyridines in moderate to good yields. The reaction underwent a radical-initiated kinetically controlled ring-opening of vinylaziridines and involved a key α,β-unsaturated imine intermediate, followed by an E2 elimination, a 6π electrocyclization, and defluorinated aromatization. In the part of experimental materials, we found many familiar compounds, such as fac-Tris(2-phenylpyridine)iridium(cas: 94928-86-6Recommanded Product: fac-Tris(2-phenylpyridine)iridium)

fac-Tris(2-phenylpyridine)iridium(cas: 94928-86-6) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.Recommanded Product: fac-Tris(2-phenylpyridine)iridium

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Inial, Alya’s team published research in Organic Letters in 2020 | CAS: 94928-86-6

fac-Tris(2-phenylpyridine)iridium(cas: 94928-86-6) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.Reference of fac-Tris(2-phenylpyridine)iridium

《Visible-Light-Mediated Access to Phosphate Estersã€?was written by Inial, Alya; Morlet-Savary, Fabrice; Lalevee, Jacques; Gaumont, Annie-Claude; Lakhdar, Sami. Reference of fac-Tris(2-phenylpyridine)iridiumThis research focused onvisible light photocatalytic condensation alkoxypyridinium salt phosphite; phosphate ester preparation mechanism. The article conveys some information:

Herein, is reported a practically simple visible-light photocatalytic approach for the synthesis of a large variety of phosphate esters, e.g. I, through the combination of N-alkoxypyridinium salts and phosphites under mild conditions. The scope of the reaction is broad and the protocol was successfully applied to the synthesis of biol. relevant structures. Quantum yield measurements, as well as EPR experiments, allowed the suggestion of a reasonable reaction mechanism. After reading the article, we found that the author used fac-Tris(2-phenylpyridine)iridium(cas: 94928-86-6Reference of fac-Tris(2-phenylpyridine)iridium)

fac-Tris(2-phenylpyridine)iridium(cas: 94928-86-6) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.Reference of fac-Tris(2-phenylpyridine)iridium

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Yao, Chaochao’s team published research in Organic Letters in 2020 | CAS: 103-74-2

2-(2-Hydroxyethyl)pyridine(cas: 103-74-2) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.Reference of 2-(2-Hydroxyethyl)pyridine

《Ynamide-Mediated Thionoester and Dithioester Synthesesã€?was written by Yao, Chaochao; Yang, Jinhua; Lu, Xiaobiao; Zhang, Shuyu; Zhao, Junfeng. Reference of 2-(2-Hydroxyethyl)pyridineThis research focused onynamide mediated thionoester dithioester synthesis. The article conveys some information:

A novel ynamide-mediated synthesis of thionoesters and dithioesters is described. The selective addition reactions of various monothiocarboxylic acids with ynamide furnish α-thioacyloxyenamides, which undergo transesterification with nucleophilic -OH or -SH species to afford thionoesters and dithioesters, resp. The broad substrate scope, mild reaction conditions, and excellent yields make this method an attractive synthetic approach to thionoesters and dithioesters. In addition to this study using 2-(2-Hydroxyethyl)pyridine, there are many other studies that have used 2-(2-Hydroxyethyl)pyridine(cas: 103-74-2Reference of 2-(2-Hydroxyethyl)pyridine) was used in this study.

2-(2-Hydroxyethyl)pyridine(cas: 103-74-2) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.Reference of 2-(2-Hydroxyethyl)pyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Lei, Yaqin’s team published research in Organic Letters in 2021 | CAS: 112881-51-3

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) 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. Category: pyridine-derivativesThe lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds.

Category: pyridine-derivativesOn October 15, 2021 ,《Cobalt-Catalyzed Remote Hydroboration of Alkenyl Aminesã€?was published in Organic Letters. The article was written by Lei, Yaqin; Huang, Jiaxin; Zhao, Wanxiang. The article contains the following contents:

The authors here present a generally applicable Co-catalyzed remote hydroboration of alkenyl amines, providing a practical strategy for the preparation of borylamines and aminoalcs. This method shows broad substrate scope and good functional group tolerance, tolerating alkenyl amines, including alkyl-alkyl amines, alkyl-aryl amines, aryl-aryl amines, and amides. Of note, this protocol is also compatible with a variety of natural products and drug derivatives Preliminary mechanistic studies suggest that this transformation involves an iterative chain walking and hydroboration sequence.4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3Category: pyridine-derivatives) was used in this study.

4′-(4-Pyridyl)-2,2′:6′,2”-terpyridine(cas: 112881-51-3) 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. Category: pyridine-derivativesThe lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the σ bonds.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Zhu, Bin-Bin’s team published research in ACS Catalysis in 2021 | CAS: 172152-57-7

2-Chloro-4-methoxy-3-methylpyridine(cas: 172152-57-7) belongs to pyridine. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. As ligands, solvents, and catalysts they facilitate reactions; thus descriptions of these new ligands and their applications abound each year.Product Details of 172152-57-7

Product Details of 172152-57-7On October 1, 2021 ,《Regioselective Tandem C-H Alkylation/Coupling Reaction of ortho-Iodophenylethylenes via C,C-Pallada(II)cyclesã€?was published in ACS Catalysis. The article was written by Zhu, Bin-Bin; Ye, Wen-Bo; He, Zhi-Tao; Zhang, Shu-Sheng; Feng, Chen-Guo; Lin, Guo-Qiang. The article contains the following contents:

Five-membered C,C-pallada(II)cycles are a unique class of diorganopalladium species with favorable stability and an electron-rich nature, leading to efficient sequential reactions with diverse electrophiles and nucleophiles. Specifically, the development of aryl-alkenyl-palladacycle-based transformations could provide an attractive approach with regio- and stereocontrol for the construction of multifunctionalized arylethylenes. However, currently, the C,C-pallada(II)cycle formation relies on a rigid skeleton or steric congestion in the backbone to promote cyclopalladation, and the formation of aryl-alkenyl-palladacycle without an α-substituent has not been achieved. Furthermore, reactions that could discriminate between the two sp2 carbon centers of such C(sp2),C(sp2)-palladacycle remain elusive. Herein, a regioselective three-component tandem alkylation/coupling reaction applicable for a variety of non-, α-, or β-substituted and α,β-disubstituted ortho-iodophenylethylenes is reported. Electron-rich 2-pyridone ligands are employed to enable the cyclopalladation process leading to aryl-alkenyl-palladacycle intermediates, of which the two C-Pd bonds are discriminated toward alkylation by their inherent steric and electronic differences. Good linear free-energy relationships between regio-/chemoselectivities and Hammett σ values are observed After reading the article, we found that the author used 2-Chloro-4-methoxy-3-methylpyridine(cas: 172152-57-7Product Details of 172152-57-7)

2-Chloro-4-methoxy-3-methylpyridine(cas: 172152-57-7) belongs to pyridine. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. As ligands, solvents, and catalysts they facilitate reactions; thus descriptions of these new ligands and their applications abound each year.Product Details of 172152-57-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Suga, Hiroyuki’s team published research in Tetrahedron in 2006 | CAS: 410092-98-7

2,6-Bis((4S,5S)-4,5-diphenyl-4,5-dihydrooxazol-2-yl)pyridine(cas: 410092-98-7) belongs to pyridine derivatives. 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. Recommanded Product: 2,6-Bis((4S,5S)-4,5-diphenyl-4,5-dihydrooxazol-2-yl)pyridine

Recommanded Product: 2,6-Bis((4S,5S)-4,5-diphenyl-4,5-dihydrooxazol-2-yl)pyridineOn September 25, 2006 ,《Asymmetric cycloaddition reactions between 2-benzopyrylium-4-olates and 3-(2-alkenoyl)-2-oxazolidinones in the presence of 2,6-bis(oxazolinyl)pyridine-lanthanoid complexesã€?was published in Tetrahedron. The article was written by Suga, Hiroyuki; Suzuki, Tomohiro; Inoue, Kei; Kakehi, Akikazu. The article contains the following contents:

Highly enantioselective and endo-selective cycloaddition reactions were observed between carbonyl ylides, generated from o-(p-bromobenzyloxy)carbonyl-α-diazoacetophenone, and 3-crotonoyl-2-oxazolidinone using (4S,5S)-Pybox-4,5-Ph2-Yb(OTf)3 as the chiral Lewis acid catalyst. In contrast, high exo-selectivity was observed for the reaction of o-methoxycarbonyl-α-diazoacetophenone with 3-acryloyl-2-oxazolidinone under similar conditions as reported previously. In the case of cycloaddition reactions between 2-benzopyrylium-4-olate, generated from o-methoxycarbonyl-α-diazoacetophenone, and 3-cinnamoyl- or 3-[(E)-3-(ethoxycarbonyl)propenoyl]-2-oxazolidinones, using the same chiral Lewis acid, the reaction favored the endo-adduct with relatively good enantioselectivity.2,6-Bis((4S,5S)-4,5-diphenyl-4,5-dihydrooxazol-2-yl)pyridine(cas: 410092-98-7Recommanded Product: 2,6-Bis((4S,5S)-4,5-diphenyl-4,5-dihydrooxazol-2-yl)pyridine) was used in this study.

2,6-Bis((4S,5S)-4,5-diphenyl-4,5-dihydrooxazol-2-yl)pyridine(cas: 410092-98-7) belongs to pyridine derivatives. 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. Recommanded Product: 2,6-Bis((4S,5S)-4,5-diphenyl-4,5-dihydrooxazol-2-yl)pyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem