Tag: 400-500

Dang, Qin-Qin; Zhan, Yu-Fen; Duan, Li-Na; Zhang, Xian-Ming published an article in 2015, the title of the article was A pyridyl-decorated MOF-505 analogue exhibiting hierarchical porosity, selective CO2 capture and catalytic capacity.HPLC of Formula: 1431292-15-7 And the article contains the following content:

An expanded pyridyl-decorated MOF-505 analog [Cu2(L)(H2O)2]·Gx (H4L = 5,5′-(pyridine-2,5-diyl)diisophthalic acid, G = solvent mol.) was solvothermally synthesized and reported. It exhibited rare hierarchical meso- and microporosity. With exposed unsaturated CuII sites and Lewis basic pyridyl sites, the material shows both large CO2-uptake capacity (123.4 cm3 g-1 at 273 K, 1 bar) and high selectivity for CO2 over N2 (55.7) at 273 K. Also, for the first time the compound was exploited for its heterogeneous catalytic performance toward the cyanosilylation reaction under solvent-free conditions. The compound can be recycled up to five times with only a minor loss of activity. The experimental process involved the reaction of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid(cas: 1431292-15-7).HPLC of Formula: 1431292-15-7

The Article related to copper pyridinediyldiisophthalate mof solvothermal preparation crystal structure, gas adsorption copper pyridinediyldiisophthalate mof, aryl aldehyde cyanosilylation catalyst copper pyridinediyldiisophthalate mof and other aspects.HPLC of Formula: 1431292-15-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Dang, Qin-Qin; Zhan, Yu-Fen; Duan, Li-Na; Zhang, Xian-Ming published an article in 2015, the title of the article was A pyridyl-decorated MOF-505 analogue exhibiting hierarchical porosity, selective CO2 capture and catalytic capacity.HPLC of Formula: 1431292-15-7 And the article contains the following content:

An expanded pyridyl-decorated MOF-505 analog [Cu2(L)(H2O)2]·Gx (H4L = 5,5′-(pyridine-2,5-diyl)diisophthalic acid, G = solvent mol.) was solvothermally synthesized and reported. It exhibited rare hierarchical meso- and microporosity. With exposed unsaturated CuII sites and Lewis basic pyridyl sites, the material shows both large CO2-uptake capacity (123.4 cm3 g-1 at 273 K, 1 bar) and high selectivity for CO2 over N2 (55.7) at 273 K. Also, for the first time the compound was exploited for its heterogeneous catalytic performance toward the cyanosilylation reaction under solvent-free conditions. The compound can be recycled up to five times with only a minor loss of activity. The experimental process involved the reaction of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid(cas: 1431292-15-7).HPLC of Formula: 1431292-15-7

The Article related to copper pyridinediyldiisophthalate mof solvothermal preparation crystal structure, gas adsorption copper pyridinediyldiisophthalate mof, aryl aldehyde cyanosilylation catalyst copper pyridinediyldiisophthalate mof and other aspects.HPLC of Formula: 1431292-15-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On July 31, 2021, Si, Xue-Jian; Jia, Jing; Bao, Yu-Liang; Wu, Ya-Pan; Liu, Yunling; Dong, Wen-Wen; Zhao, Jun; Li, Dong-Sheng published an article.Safety of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid The title of the article was Superprotonic conductivity of a 3D anionic metal-organic framework by synergistic effect of guest [Me2NH2]+ cations, water molecules and host carboxylates. And the article contained the following:

A new 3D anionic metal-organic framework material, namely, [Me2NH2]2[Cd3(L)]·2H2O (1, H4L = 2,5′-di(3′,5′-dicarboxylphenyl)pyridine) has been synthesized under solvothermal conditions and characterized by single crystal x-ray diffraction, PXRD, thermogravimetric anal. and proton conduction investigation. In 1, the adjacent Cd(II) ions are joined to form a trinuclear [Cd3(COO)8] secondary building unit (SBU) by eight bridging carboxylate groups of L4- ligands. The trinuclear [Cd3(COO)8] SBUs are connected by L4- ligands into a 3D (4,8)-connected framework with 1D channels. Most interestingly, due to the guest [Me2NH2]+ cations, water mols. and carboxylates sites are lined the pore channels, 1 possesses a remarkable proton conductivity of 1.12 x 10-1 S cm-1 at 60° and 98% RH, which is comparable to com. available Nafion. The mechanism of proton conduction was also well discussed. The experimental process involved the reaction of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid(cas: 1431292-15-7).Safety of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

The Article related to dicarboxylphenylpyridine cadmium metal organic framework preparation crystal mol structure, superprotonic conductivity three dimensional anionic metal organic framework, synergistic guest cation water mol host carboxylate and other aspects.Safety of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On January 28, 2021, Cuthbertson, Alan; Boehnke, Niels published a patent.HPLC of Formula: 282734-37-6 The title of the patent was Targeted radiopharmaceuticals for the diagnosis and treatment of prostate cancer. And the patent contained the following:

The invention is related to the preparation of compounds I [n = 1-3; R1-4 = OH or Q; Q = a tissue-targeting moiety selected from the group consisting of poly- and oligopeptides, proteins, DNA and RNA fragments, aptamers polyclonal or monoclonal antibodies, and a mixture of proteins or fragments or constructs of protein] their stereoisomers, hydrates, solvates and salts, and targeted radiopharmaceuticals, pharmaceutical compositions and combinations comprising them and their use for manufacturing pharmaceutical compositions for the treatment or prophylaxis of diseases, in particular of soft tissue diseases, as a sole agent or in combination with other active ingredients. The experimental process involved the reaction of (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(5-bromopyridin-2-yl)propanoic acid(cas: 282734-37-6).HPLC of Formula: 282734-37-6

The Article related to peptide chelator conjugate preparation antitumor prostate cancer, preparation peptide chelator thorium 227 her2 fap psma conjugate, prostate specific membrane antigen carboxy hopo thorium 227 conjugate, targeted radiopharmaceutical prostate cancer and other aspects.HPLC of Formula: 282734-37-6

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On November 30, 2019, Liu, Jin-jian; Li, Jing published an article.Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide The title of the article was Photochromism of stable crystalline 3D Cd-viologen coordination polymers. And the article contained the following:

Recent studies have demonstrated the efficient synthesis of photochromic coordination polymers by assembly of viologens and metal centers. In order to enrich this system, in-depth research should be conducted on the impact of metal centers, but related research is rare. On the basis of two photochromic viologen-based compounds, two new photochromic coordination polymers are prepared by introducing cadmium ions. In this study, four novel host-guest compounds based on viologen cations (EV2+ = 1,1′-bis(ethyl)-4,4′-bipyridinium dication, PV2+ = 1,1′-bis(propyl)-4,4′-bipyridinium dication) and 1,3,5-benzenetricarboxylic acid (H3BTC) have been synthesized and structurally characterized, [(EV)0.5(H2BTC)]·H2O (1), [(PV)(H2BTC)2]·2H2O (2), {(EV)0.5[Cd(BTC)(H2O)]·2H2O}n (3), {(PV)0.5[Cd(BTC)(H2O)]·2H2O}n (4). Compounds 1 and 2 feature the isolated structure, where uncoordinated H2BTC- units connect to viologen cations by supramol. interactions. Compounds 3 and 4 feature the three-dimensional (3D) anionic MOFs of {[Cd(BTC)(H2O)]-}n with viologen cations inserted in the framework. As expected, incorporating the viologen fragment into the framework results in predefined photochromism of four compounds It is worth noting that the introduction of cadmium ions will directly improve the photosensitive behaviors and protect the photo-generated radicals. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

The Article related to alkylbipyridinium benzenetricarboxylate viologen cadmium coordination polymer preparation photochromism structure, crystal mol structure cadmium viologen coordination polymer, photochromism alkylbipyridinium benzenetricarboxylate viologen cadmium coordination polymer and other aspects.Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On October 31, 1994, Inaba, Minoru; Ogumi, Zempachi; Takehara, Zen-ichiro published an article.Synthetic Route of 52243-87-5 The title of the article was Application of the solid polymer electrolyte method to organic electrochemistry XVII. Indirect electrochemical debromination using viologens as microscopic phase-transfer mediators. And the article contained the following:

Solid polymer electrolyte (SPE) composite electrodes using a perfluorinated ion-exchange membrane (Nafion), which is known to be microscopically separated into hydrophilic and hydrophobic domains, were prepared Various N,N’-dialkyl-4-4′-bipyridinium salts (viologens) were incorporated in the SPE composite electrodes as phase transfer mediators. Electrochem. debromination of meso-1,2-dibromo-1,2-diphenylethane was carried out on the SPE composite electrodes. The results were compared with those obtained in an emulsion system consisting of water and dichloromethane. Of the viologen compounds tested, Pr viologen was the most effective mediator for the SPE composite electrode, while octyl viologen dibromide was the most effective mediator in the emulsion system. The active species for the debromination in the emulsion system is a doubly reduced neutral form of viologen that was generated by the disproportionation of cation radicals. The disproportionation constant, Kd, of octyl viologen cation radical in a two-phase system consisting of water and dichloromethane is 809. The reaction mechanism on the SPE composite electrode was discussed, and probably the active species was generated by disproportionation at the microscopically heterogeneous interface between the hydrophilic and hydrophobic domains of the Nafion. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Synthetic Route of 52243-87-5

The Article related to indirect electrochem debromination phase transfer mediator, dibromodiphenylethane electrochem debromination composite electrode, viologen dibromodiphenylethane electrodebromination, catalyst viologen dibromodiphenylethane electrodebromination, disproportionation octylviologen radical cation and other aspects.Synthetic Route of 52243-87-5

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On November 30, 1996, Kim, Sung Hoon; Bae, Jin Seok; Hwang, Seok Hwan; Gwon, Tae Sun; Doh, Myung Ki; Park, Chul published an article.Name: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide The title of the article was Electrochromic properties of symmetric and asymmetric viologens. And the article contained the following:

Electrochromic properties of several viologen derivatives were examined by the cyclovoltametric and chronoamperometric methods. The electrochromic properties of 1,1′-diethyl-4,4′-bipyridinium dibromide(EV), 1,1′-dipropyl-4,4′-bipyridinium dibromide(PV), 1,1′-dibutyl-4,4′-bipyridinium dibromide(BV) and 1-butyl-1′-ethyl-4,4′-bipyridinium dibromide(EBV) were studied using an propylenecarbonate/methanol solution with Bu4NBF4 as supporting electrolyte. A monomer-dimer equilibrium might explain the observation that EV and EBV cation radical solutions shows violet under an applied voltage of 1.73̃.0 V but blue under open-circuit condition. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Name: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

The Article related to viologen electrochromism cyclic voltammetry chronoamperometry, diethylbipyridinium dibromide electrochromism cyclic voltammetry chronoamperometry, dipropylbipyridinium dibromide electrochromism cyclic voltammetry chronoamperometry, dibutylbipyridinium dibromide electrochromism cyclic voltammetry chronoamperometry and other aspects.Name: 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Ding, Tao; Wang, Xiao-Xian; Zhang, Meng; Ou, Si-Meng; Hu, Tian-Ju published an article in 2017, the title of the article was Four new coordination polymers based on a pyridinetetracarboxylate ligand: syntheses, structures and high CO2/CH4 separation.Safety of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid And the article contains the following content:

Four new coordination polymers, [Zn(TPTA)0.5(BIBP)] (1), [Mn(TPTA)0.5(BIBP)0.5(DMF)] (2), [Zn1.5(TPTA)]·DMF·H2O (3), and [Cd1.5(TPTA)]·DMF·2H2O (4) (H4TPTA = 5,5′-(pyridine-2,5-diyl)diisophthalic acid, BIBP = 4,4′-bis(imidazol-1-yl)biphenyl), have been synthesized under solvothermal conditions and fully characterized. Single-crystal X-ray diffraction anal. revealed that complex 1 is a three-dimensional (3D) 3-fold interpenetrating architecture with (4·64·8)2(42·62·82) topol. Complex 2 possesses a 3D 2-fold interpenetrating framework based on binuclear Mn2 units with (412·63) topol. Both complexes 3 and 4 exhibit trinuclear 3D non-interpenetrating (4,8)-connected networks with (46)2(412·612·84) topol. The fluorescence properties of 1, 3 and 4 have been also measured. Importantly, gas adsorption studies for 1-4 show highly selective adsorption of CO2 over CH4. The experimental process involved the reaction of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid(cas: 1431292-15-7).Safety of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

The Article related to zinc manganese cadmium pyridineisophthalate imidazolebiphenyl complex preparation thermal stability, crystal structure zinc manganese cadmium pyridineisophthalate imidazolebiphenyl complex, photoluminescence zinc manganese cadmium pyridineisophthalate imidazolebiphenyl complex, gas adsorption zinc manganese cadmium pyridineisophthalate imidazolebiphenyl complex and other aspects.Safety of 5,5′-(Pyridine-2,5-diyl)diisophthalic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On January 28, 2021, Cuthbertson, Alan; Boehnke, Niels published a patent.HPLC of Formula: 282734-37-6 The title of the patent was Targeted radiopharmaceuticals for the diagnosis and treatment of prostate cancer. And the patent contained the following:

The invention is related to the preparation of compounds I [n = 1-3; R1-4 = OH or Q; Q = a tissue-targeting moiety selected from the group consisting of poly- and oligopeptides, proteins, DNA and RNA fragments, aptamers polyclonal or monoclonal antibodies, and a mixture of proteins or fragments or constructs of protein] their stereoisomers, hydrates, solvates and salts, and targeted radiopharmaceuticals, pharmaceutical compositions and combinations comprising them and their use for manufacturing pharmaceutical compositions for the treatment or prophylaxis of diseases, in particular of soft tissue diseases, as a sole agent or in combination with other active ingredients. The experimental process involved the reaction of (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(5-bromopyridin-2-yl)propanoic acid(cas: 282734-37-6).HPLC of Formula: 282734-37-6

The Article related to peptide chelator conjugate preparation antitumor prostate cancer, preparation peptide chelator thorium 227 her2 fap psma conjugate, prostate specific membrane antigen carboxy hopo thorium 227 conjugate, targeted radiopharmaceutical prostate cancer and other aspects.HPLC of Formula: 282734-37-6

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

On November 30, 2019, Liu, Jin-jian; Li, Jing published an article.Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide The title of the article was Photochromism of stable crystalline 3D Cd-viologen coordination polymers. And the article contained the following:

Recent studies have demonstrated the efficient synthesis of photochromic coordination polymers by assembly of viologens and metal centers. In order to enrich this system, in-depth research should be conducted on the impact of metal centers, but related research is rare. On the basis of two photochromic viologen-based compounds, two new photochromic coordination polymers are prepared by introducing cadmium ions. In this study, four novel host-guest compounds based on viologen cations (EV2+ = 1,1′-bis(ethyl)-4,4′-bipyridinium dication, PV2+ = 1,1′-bis(propyl)-4,4′-bipyridinium dication) and 1,3,5-benzenetricarboxylic acid (H3BTC) have been synthesized and structurally characterized, [(EV)0.5(H2BTC)]·H2O (1), [(PV)(H2BTC)2]·2H2O (2), {(EV)0.5[Cd(BTC)(H2O)]·2H2O}n (3), {(PV)0.5[Cd(BTC)(H2O)]·2H2O}n (4). Compounds 1 and 2 feature the isolated structure, where uncoordinated H2BTC- units connect to viologen cations by supramol. interactions. Compounds 3 and 4 feature the three-dimensional (3D) anionic MOFs of {[Cd(BTC)(H2O)]-}n with viologen cations inserted in the framework. As expected, incorporating the viologen fragment into the framework results in predefined photochromism of four compounds It is worth noting that the introduction of cadmium ions will directly improve the photosensitive behaviors and protect the photo-generated radicals. The experimental process involved the reaction of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide(cas: 52243-87-5).Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

The Article related to alkylbipyridinium benzenetricarboxylate viologen cadmium coordination polymer preparation photochromism structure, crystal mol structure cadmium viologen coordination polymer, photochromism alkylbipyridinium benzenetricarboxylate viologen cadmium coordination polymer and other aspects.Reference of 1,1′-Dipropyl-[4,4′-bipyridine]-1,1′-diium bromide

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem