Tag: 200-300

COA of Formula: C5H3Br2NIn 2020 ,《Self-Healing Metallo-Supramolecular Hydrogel Based on Specific Ni2+ Coordination Interactions of Poly(ethylene glycol) with Bistriazole Pyridine Ligands in the Main Chain》 was published in Macromolecular Rapid Communications. The article was written by Xu, Xiaowen; Jerca, Valentin Victor; Hoogenboom, Richard. The article contains the following contents:

In this study, a supramol. hydrogel formed by incorporating the 2,6-bis(1,2,3-triazol-4-yl)-pyridine (btp) ligand in the backbone of a polymer prepared by copper(I)-catalyzed alkyne-azide cycloaddition (CuAAC) “”click”” polyaddition reaction of 2,6-diethynylpyridine and diazido-poly(ethylene glycol) is reported. The hydrogelation is selectively triggered by the addition of Ni2+ ions to aqueous copolymer solutions The gelation and rheol. properties could be tuned by the change of metal to ligand ratio and polymer concentration Interestingly, the hydrogel exhibits a fast (within 2 min) and excellent repeatable autonomic healing capacity without external stimuli. This self-healing behavior may find potential applications for the repairing of metal coatings, in the future. The experimental process involved the reaction of 2,6-Dibromopyridine(cas: 626-05-1COA of Formula: C5H3Br2N)

2,6-Dibromopyridine(cas: 626-05-1) belongs to pyridine. Pyridines, quinolines, and isoquinolines have found a function in almost all aspects of organic chemistry. Pyridine has found use as a solvent, base, ligand, functional group, and molecular scaffold. As structural elements, these moieties are potent electron-deficient groups, metal-directing functionalities, fluorophores, and medicinally important pharmacophores. COA of Formula: C5H3Br2N

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Reference of 2,6-DibromopyridineIn 2020 ,《Metal Ion Selective Self-Assembly of a Ligand Functionalized Polymer into [1+1] Macrocyclic and Supramolecular Polymer Structures via Metal-Ligand Coordination》 appeared in Macromolecular Rapid Communications. The author of the article were Xu, Xiaowen; Van Guyse, Joachim F. R.; Jerca, Valentin Victor; Hoogenboom, Richard. The article conveys some information:

The design and synthesis of polymer-based metallomacrocycles relying on metal-ligand interactions remain a challenge in the polymer field. Instead of utilizing chem. reactions to synthesize macrocycles, a general approach is proposed to construct metallomacrocyclic structures through supramol. self-assembly of a specific macroligand with suitable transition metal ions. Therefore, a new ditopic macroligand (L) consisting of PEG end-capped with 2,6-bis(1,2,3-triazol-4-yl)pyridine derivatives is prepared via CuAAC “”click”” reaction. Four types of metal (Fe2+, Zn2+, Ni2+, and Cu2+) complexes are obtained by simply mixing a solution of metal ions and L in appropriate concentrations The investigation of the coordination chem. suggests that coordination of L with Cu2+ results in the formation of a [1+1] metallomacrocycle, while the other metal complexes exclusively lead to the formation of linear metallopolymers and/or larger aggregates. This work provides new insights into designing metallomacrocycles and may have potential application in the synthesis of catenanes and other cyclic or cycle-based topol. architectures. After reading the article, we found that the author used 2,6-Dibromopyridine(cas: 626-05-1Reference of 2,6-Dibromopyridine)

2,6-Dibromopyridine(cas: 626-05-1) belongs to pyridine. Pyridine derivatives lend themselves to many roles in the spirited field of supramolecular chemistry – whether as the ligand backbone of metal-organic polymers or presiding over the key electronic stations of nanodevices. In biochemistry, pyridine-containing cofactors are necessary nutrients on which our lives depend. Reference of 2,6-Dibromopyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

The author of 《Single-molecule white-light of tris-pyrazolonate-Dy3+ complexes》 were Liu, Jiaxiang; Shi, Qi; He, Yani; Fu, Guorui; Li, Wentao; Miao, Tiezheng; Lu, Xingqiang. And the article was published in Inorganic Chemistry Communications in 2019. COA of Formula: C5H3Br2N The author mentioned the following in the article:

Based on the self-assembly of the pyrazolone ligand HPMIP (1-phenyl-3-methyl-4-(isobutyryl)-5-pyrazolone), DyCl3·6H2O and/or the 5-Br-2,2′-bpy (5-bromo-2,2′-bipyridine), two tris-pyrazolonate-Dy3+-complexes [Dy(PMIP)3(H2O)2] (2) and [Dy(PMIP)3(5-Br-2,2′-bpy)] (5) characteristic of dual-emissive emissions toward single-mol. white-light are obtained, resp., and in dependence on the effective suppression from the oscillator-induced quenching by the involved 5-Br-2,2′-bpy, the color-compensation of the residual ligands-based strong emission and the Dy3+-centered (4F9/2 → 6HJ/2 transitions) multiple emissions renders its Dy3+-complex an efficient (Φem = 4.2%) single-mol. white-light. The experimental part of the paper was very detailed, including the reaction process of 2,5-Dibromopyridine(cas: 624-28-2COA of Formula: C5H3Br2N)

2,5-Dibromopyridine(cas: 624-28-2) belongs to pyridine. Pyridine derivatives lend themselves to many roles in the spirited field of supramolecular chemistry – whether as the ligand backbone of metal-organic polymers or presiding over the key electronic stations of nanodevices. In biochemistry, pyridine-containing cofactors are necessary nutrients on which our lives depend. COA of Formula: C5H3Br2N

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

The author of 《Exfoliating a CdII-Purine Framework: Conversion of Nanosheets-to-Nanofibers and Studies of Elastic and Capacitive Properties》 were Avasthi, Ilesha; Kulkarni, Manish M.; Verma, Sandeep. And the article was published in Chemistry – A European Journal in 2019. Name: 2-(Bromomethyl)pyridine hydrobromide The author mentioned the following in the article:

Layered bulk crystals are amenable to exfoliation to yield 2D nanosheets through isolation and intercalation processes, which could be further converted to 1D nanoscale structures. The latter inherit gross morphol. and phys. properties associated with the precursor structures. Herein, we report three purine-based crystal structures 1, 2, and 3, where 3 is obtained by a single-crystal-to-single-crystal transformation from 2 and is a conformational polymorph of 1. Next, we describe the sonication-assisted liquid exfoliation of 1, a CdII-purine coordination framework, into nanosheets and nanofibers in a solvent-dependent process. The exfoliation was carefully studied at low temperatures to ascertain this unique conversion. This work also features the determination of the Young’s modulus and surface potential of the bioinspired CdII-based nanostructures by using amplitude modulation-frequency modulation at. force microscopy and Kelvin probe force microscopy, resp., revealing their interesting elastic and capacitive properties for their possible use in electronics and energy devices. Electron impedance spectroscopy measurements further established a higher value of capacitance for the exfoliated CdII framework as compared to the ligand alone. In the part of experimental materials, we found many familiar compounds, such as 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8Name: 2-(Bromomethyl)pyridine hydrobromide)

2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridine is very deactivated towards electrophilic substitution with respect to benzene. For this reason classical formylation, using methods such as the Gattermann or Vilsmeier reactions, are not generally successful. Name: 2-(Bromomethyl)pyridine hydrobromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Chemistry – A European Journal included an article by Park, Hyunchang; Ahn, Hye Mi; Jeong, Ha Young; Kim, Cheal; Lee, Dongwhan. Recommanded Product: 2-(Bromomethyl)pyridine hydrobromide. The article was titled 《Non-Heme Iron Catalysts for Olefin Epoxidation: Conformationally Rigid Aryl-Aryl Junction To Support Amine/Imine Multidentate Ligands》. The information in the text is summarized as follows:

Atom-transfer chem. represented an important class of reactions catalyzed by metalloenzymes. As a functional mimic of non-heme iron enzymes that deliver oxygen atoms to olefins, the monoiron complexes supported by new N-donor chelates were designed. These ligands took advantage of heme-like conformational rigidity of the π-conjugated mol. backbone and synthetic flexibility of tethering non-heme donor groups for addnl. steric and electronic control. Iron complexes generated in-situ were used to carry out catalytic epoxidation of a wide range of olefin substrates by using mCPBA as a terminal oxidant. The fate of initial iron-peracid adduct and the involvement of iron-oxo species in this process were investigated further by mechanistic probes and isotope exchange studies. Thet anilidopyridyl-derived [N,N]-bidentate motif served as a versatile structural platform to build non-heme ligands for catalytic oxidation chem. The results came from multiple reactions, including the reaction of 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8Recommanded Product: 2-(Bromomethyl)pyridine hydrobromide)

2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridine is a relatively complex molecule and exhibits a number of different bands in IR spectra. Among others, the bands characterizing the ν8a and ν19b modes have been found to be sensitive to the coordination or protonation of the molecule. Note that the band that is diagnostic for the PyH+ ion at about 1545 cm− 1 (ν19b mode) does not overlap with any of the other bands.Recommanded Product: 2-(Bromomethyl)pyridine hydrobromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2016,Igawa, Hideyuki; Takahashi, Masashi; Kakegawa, Keiko; Kina, Asato; Ikoma, Minoru; Aida, Jumpei; Yasuma, Tsuneo; Kawata, Yayoi; Ashina, Shuntaro; Yamamoto, Syunsuke; Kundu, Mrinalkanti; Khamrai, Uttam; Hirabayashi, Hideki; Nakayama, Masaharu; Nagisa, Yasutaka; Kasai, Shizuo; Maekawa, Tsuyoshi published 《Correction to Melanin-Concentrating Hormone Receptor 1 Antagonists Lacking an Aliphatic Amine: Synthesis and Structure-Activity Relationships of Novel 1-(Imidazo[1,2-a]pyridin-6-yl)pyridin-2(1H)-one Derivatives [Erratum to document cited in CA164:213881]》.Journal of Medicinal Chemistry published the findings.SDS of cas: 31106-82-8 The information in the text is summarized as follows:

In the body of Table 1, chem. structures for the R group are missing; the structures are provided here. In addition to this study using 2-(Bromomethyl)pyridine hydrobromide, there are many other studies that have used 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8SDS of cas: 31106-82-8) was used in this study.

2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridines form stable salts with strong acids. Pyridine itself is often used to neutralize acid formed in a reaction and as a basic solvent. SDS of cas: 31106-82-8

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

The author of 《Single-molecule white-light of tris-pyrazolonate-Dy3+ complexes》 were Liu, Jiaxiang; Shi, Qi; He, Yani; Fu, Guorui; Li, Wentao; Miao, Tiezheng; Lu, Xingqiang. And the article was published in Inorganic Chemistry Communications in 2019. COA of Formula: C5H3Br2N The author mentioned the following in the article:

Based on the self-assembly of the pyrazolone ligand HPMIP (1-phenyl-3-methyl-4-(isobutyryl)-5-pyrazolone), DyCl3·6H2O and/or the 5-Br-2,2′-bpy (5-bromo-2,2′-bipyridine), two tris-pyrazolonate-Dy3+-complexes [Dy(PMIP)3(H2O)2] (2) and [Dy(PMIP)3(5-Br-2,2′-bpy)] (5) characteristic of dual-emissive emissions toward single-mol. white-light are obtained, resp., and in dependence on the effective suppression from the oscillator-induced quenching by the involved 5-Br-2,2′-bpy, the color-compensation of the residual ligands-based strong emission and the Dy3+-centered (4F9/2 → 6HJ/2 transitions) multiple emissions renders its Dy3+-complex an efficient (Φem = 4.2%) single-mol. white-light. The experimental part of the paper was very detailed, including the reaction process of 2,5-Dibromopyridine(cas: 624-28-2COA of Formula: C5H3Br2N)

2,5-Dibromopyridine(cas: 624-28-2) belongs to pyridine. Pyridine derivatives lend themselves to many roles in the spirited field of supramolecular chemistry – whether as the ligand backbone of metal-organic polymers or presiding over the key electronic stations of nanodevices. In biochemistry, pyridine-containing cofactors are necessary nutrients on which our lives depend. COA of Formula: C5H3Br2N

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

The author of 《Exfoliating a CdII-Purine Framework: Conversion of Nanosheets-to-Nanofibers and Studies of Elastic and Capacitive Properties》 were Avasthi, Ilesha; Kulkarni, Manish M.; Verma, Sandeep. And the article was published in Chemistry – A European Journal in 2019. Name: 2-(Bromomethyl)pyridine hydrobromide The author mentioned the following in the article:

Layered bulk crystals are amenable to exfoliation to yield 2D nanosheets through isolation and intercalation processes, which could be further converted to 1D nanoscale structures. The latter inherit gross morphol. and phys. properties associated with the precursor structures. Herein, we report three purine-based crystal structures 1, 2, and 3, where 3 is obtained by a single-crystal-to-single-crystal transformation from 2 and is a conformational polymorph of 1. Next, we describe the sonication-assisted liquid exfoliation of 1, a CdII-purine coordination framework, into nanosheets and nanofibers in a solvent-dependent process. The exfoliation was carefully studied at low temperatures to ascertain this unique conversion. This work also features the determination of the Young’s modulus and surface potential of the bioinspired CdII-based nanostructures by using amplitude modulation-frequency modulation at. force microscopy and Kelvin probe force microscopy, resp., revealing their interesting elastic and capacitive properties for their possible use in electronics and energy devices. Electron impedance spectroscopy measurements further established a higher value of capacitance for the exfoliated CdII framework as compared to the ligand alone. In the part of experimental materials, we found many familiar compounds, such as 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8Name: 2-(Bromomethyl)pyridine hydrobromide)

2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridine is very deactivated towards electrophilic substitution with respect to benzene. For this reason classical formylation, using methods such as the Gattermann or Vilsmeier reactions, are not generally successful. Name: 2-(Bromomethyl)pyridine hydrobromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Chemistry – A European Journal included an article by Park, Hyunchang; Ahn, Hye Mi; Jeong, Ha Young; Kim, Cheal; Lee, Dongwhan. Recommanded Product: 2-(Bromomethyl)pyridine hydrobromide. The article was titled 《Non-Heme Iron Catalysts for Olefin Epoxidation: Conformationally Rigid Aryl-Aryl Junction To Support Amine/Imine Multidentate Ligands》. The information in the text is summarized as follows:

Atom-transfer chem. represented an important class of reactions catalyzed by metalloenzymes. As a functional mimic of non-heme iron enzymes that deliver oxygen atoms to olefins, the monoiron complexes supported by new N-donor chelates were designed. These ligands took advantage of heme-like conformational rigidity of the π-conjugated mol. backbone and synthetic flexibility of tethering non-heme donor groups for addnl. steric and electronic control. Iron complexes generated in-situ were used to carry out catalytic epoxidation of a wide range of olefin substrates by using mCPBA as a terminal oxidant. The fate of initial iron-peracid adduct and the involvement of iron-oxo species in this process were investigated further by mechanistic probes and isotope exchange studies. Thet anilidopyridyl-derived [N,N]-bidentate motif served as a versatile structural platform to build non-heme ligands for catalytic oxidation chem. The results came from multiple reactions, including the reaction of 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8Recommanded Product: 2-(Bromomethyl)pyridine hydrobromide)

2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridine is a relatively complex molecule and exhibits a number of different bands in IR spectra. Among others, the bands characterizing the ν8a and ν19b modes have been found to be sensitive to the coordination or protonation of the molecule. Note that the band that is diagnostic for the PyH+ ion at about 1545 cm− 1 (ν19b mode) does not overlap with any of the other bands.Recommanded Product: 2-(Bromomethyl)pyridine hydrobromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2016,Igawa, Hideyuki; Takahashi, Masashi; Kakegawa, Keiko; Kina, Asato; Ikoma, Minoru; Aida, Jumpei; Yasuma, Tsuneo; Kawata, Yayoi; Ashina, Shuntaro; Yamamoto, Syunsuke; Kundu, Mrinalkanti; Khamrai, Uttam; Hirabayashi, Hideki; Nakayama, Masaharu; Nagisa, Yasutaka; Kasai, Shizuo; Maekawa, Tsuyoshi published 《Correction to Melanin-Concentrating Hormone Receptor 1 Antagonists Lacking an Aliphatic Amine: Synthesis and Structure-Activity Relationships of Novel 1-(Imidazo[1,2-a]pyridin-6-yl)pyridin-2(1H)-one Derivatives [Erratum to document cited in CA164:213881]》.Journal of Medicinal Chemistry published the findings.SDS of cas: 31106-82-8 The information in the text is summarized as follows:

In the body of Table 1, chem. structures for the R group are missing; the structures are provided here. In addition to this study using 2-(Bromomethyl)pyridine hydrobromide, there are many other studies that have used 2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8SDS of cas: 31106-82-8) was used in this study.

2-(Bromomethyl)pyridine hydrobromide(cas: 31106-82-8) belongs to pyridine. Pyridines form stable salts with strong acids. Pyridine itself is often used to neutralize acid formed in a reaction and as a basic solvent. SDS of cas: 31106-82-8

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem