Category: pyridine-derivatives

《Preparation of azaindolines and benzoyl substituted azaindolines: precursors of triazabenzo[cd]azulen-9-one PDE4 inhibitors》 was published in Tetrahedron Letters in 2011. These research results belong to Badland, Matthew; Devillers, Ingrid; Durand, Corinne; Fasquelle, Veronique; Gaudilliere, Bernard; Jacobelli, Henry; Manage, Ajith C.; Pevet, Isabelle; Puaud, Jocelyne; Shorter, Anthony J.; Wrigglesworth, Roger. Electric Literature of C9H12N2O2 The article mentions the following:

The syntheses of various substituted azaindolines are described. Azaindolines were identified as potential key intermediates towards new PDE4 inhibitors. The experimental process involved the reaction of Ethyl 2-(3-aminopyridin-2-yl)acetate(cas: 295327-27-4Electric Literature of C9H12N2O2)

Ethyl 2-(3-aminopyridin-2-yl)acetate(cas: 295327-27-4) belongs to anime. Many important products require amines as part of their syntheses. Methylamine is utilized in the production of the analgesic meperidine (trade name Demerol) and the photographic developer Metol (trademark), and dimethylamine is used in the synthesis of the antihistamine diphenhydramine (trade name Benadryl), the solvent dimethylformamide (DMF), and the rocket propellant 1,1-dimethylhydrazine. The synthesis of the insect repellent N,N-diethyl-m-toluamide (DEET) incorporates diethylamine while that of the synthetic fibre Kevlar requires aromatic amines.Electric Literature of C9H12N2O2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Name: 4-CyanopyridineIn 2021 ,《Metal-Free Hydropyridylation of Thioester-Activated Alkenes via Electroreductive Radical Coupling》 was published in Journal of Organic Chemistry. The article was written by Xu, Hehuan; Liu, Jiayu; Nie, Feiyun; Zhao, Xiaowei; Jiang, Zhiyong. The article contains the following contents:

An electrochem. hydropyridylation of thioester-activated alkenes R1R2C:CHC(O)SEt (R1 = Ph, 2-MeOC6H4, 3-BrC6H4, 1-naphthyl, N-Boc-indol-3-yl, etc.; R2 = H, Me, n-Bu) with 4-cyanopyridines has been developed. The reactions proceed via tandem electroreduction of both substrates on the cathode surface, protonation and radical cross-coupling processes, resulting in a variety of valuable pyridine variants, which contain a tertiary and even a quaternary carbon at the α-position of pyridines in high yields. These reactions require no catalyst or high temperature representing a highly sustainable synthetic method. In the experimental materials used by the author, we found 4-Cyanopyridine(cas: 100-48-1Name: 4-Cyanopyridine)

4-Cyanopyridine(cas: 100-48-1) 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. Name: 4-Cyanopyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

HPLC of Formula: 98-98-6In 2020 ,《Spectroscopic and Theoretical Investigation of Color Tuning in Deep-Red Luminescent Iridium(III) Complexes》 was published in Inorganic Chemistry. The article was written by Stonelake, Thomas M.; Phillips, Kaitlin A.; Otaif, Haleema Y.; Edwardson, Zachary C.; Horton, Peter N.; Coles, Simon J.; Beames, Joseph M.; Pope, Simon J. A.. The article contains the following contents:

A series of heteroleptic, neutral iridium(III) complexes of the form [Ir(L)2(N^O)] (where L = cyclometalated 2,3-disubstituted quinoxaline and N^O = ancillary picolinate or pyrazinoate) are described in terms of their synthesis and spectroscopic properties, with supporting computational analyses providing addnl. insight into the electronic properties. The 10 [Ir(L)2(N^O)] complexes were characterized using a range of anal. techniques (including 1H, 13C, and 19F NMR and IR spectroscopies and mass spectrometry). One of the examples was structurally characterized using X-ray diffraction. The redox properties were determined using cyclic voltammetry, and the electronic properties were investigated using UV-vis, time-resolved luminescence, and transient absorption spectroscopies. The complexes are phosphorescent in the red region of the visible spectrum (λem = 633-680 nm), with lifetimes typically of hundreds of nanoseconds and quantum yields ca. 5% in aerated chloroform. A combination of spectroscopic and computational analyses suggests that the long-wavelength absorption and emission properties of these complexes are strongly characterized by a combination of spin-forbidden metal-to-ligand charge-transfer and quinoxaline-centered transitions. The emission wavelength in these complexes can thus be controlled in two ways: first, substitution of the cyclometalating quinoxaline ligand can perturb both the HOMO and LUMO levels (Cl atoms on the ligand induce the largest bathochromic shift), and second, the choice of the ancillary ligand can influence the HOMO energy (pyrazinoate stabilizes the HOMO, inducing hypsochromic shifts). Heteroleptic neutral iridium(III) complexes [Ir(L)2(N^O)] (where N^O = picolinate or pyrazinoate) that incorporate cyclometalated quinoxaline ligands demonstrate tunable emission in the red region of the visible spectrum. In the experiment, the researchers used Picolinic acid(cas: 98-98-6HPLC of Formula: 98-98-6)

Picolinic acid(cas: 98-98-6) is used as a chelate for alkaline earth metals. Used to prepare picolinato ligated transition metal complexes. In synthetic organic chemistry, has been used as a substrate in the Mitsunobu reaction and in the Hammick reaction.HPLC of Formula: 98-98-6

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Name: Methyl 5-bromopicolinateIn 2014 ,《An environmentally-friendly one-pot synthesis of 4-sulfonyl benzoic acids》 was published in Tetrahedron Letters. The article was written by Frieman, Bryan A.. The article contains the following contents:

This Letter reported an environmentally-friendly one-pot SNAr reaction of thiols to 4-halobenzoic acid Me esters to provide 4-substituted sulfone benzoic acids and picolinic acids after bleach-mediated oxidative workup. These acid intermediates were synthesized on gram scale, are perfect partners for library synthesis, and have good phys. chem. properties useful for drug discovery. In the experimental materials used by the author, we found Methyl 5-bromopicolinate(cas: 29682-15-3Name: Methyl 5-bromopicolinate)

Methyl 5-bromopicolinate(cas: 29682-15-3) 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. Name: Methyl 5-bromopicolinate

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Category: pyridine-derivativesIn 2020 ,《Mild and selective hydrogenation of nitriles into primary amines over a supported Ni catalyst》 was published in New Journal of Chemistry. The article was written by Wang, Jianjian; Tang, Qingjie; Jin, Shiwei; Wang, Yanxin; Yuan, Ziliang; Chi, Quan; Zhang, Zehui. The article contains the following contents:

The development of new heterogeneous non-noble catalytic systems for the selective hydrogenation of nitriles into primary amines is a challenging task. In this study, a mesoporous Al2O3-supported Ni catalyst (denoted as Ni/Al2O3-600, where 600 represents the reduction temperature) demonstrated a high catalytic activity for the hydrogenation of nitriles under mild conditions (60-80°C and 2.5 bar H2) with ammonia as the additive. This catalytic system has a wide substrate range; and the Ni/Al2O3 catalyst demonstrated a good tolerance to other functional groups, which was possibly due to its high catalytic activity under mild conditions. A plausible reaction pathway was proposed for the hydrogenation of nitriles into primary amines, and it was found that ammonia played a great role in the enhancement of the selectivity of primary amines by the inhibition of the side reaction to generate secondary amines. In addition, the Ni/Al2O3-600 catalyst could be reused five times without activity loss through convenient magnetic recovery. In the experimental materials used by the author, we found 4-Cyanopyridine(cas: 100-48-1Category: pyridine-derivatives)

4-Cyanopyridine(cas: 100-48-1) belongs to pyridine. Pyridine and pyridine-derived structures are privileged pharmacophores in medicinal chemistry and an essential functionality for organic chemists. As the prototypical π-deficient heterocycle, pyridine illustrates distinctive chemistry as both substrate and reagent. Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Category: pyridine-derivativesIn 2020 ,《Efficient trinuclear Ru(II)-Re(I) supramolecular photocatalysts for CO2 reduction based on a new tris-chelating bridging ligand built around a central aromatic ring》 was published in Chemical Science. The article was written by Cancelliere, Ambra M.; Puntoriero, Fausto; Serroni, Scolastica; Campagna, Sebastiano; Tamaki, Yusuke; Saito, Daiki; Ishitani, Osamu. The article contains the following contents:

We have designed and synthesized a new tris-chelating polypyridine ligand (bpy3Ph) suitable to be used as a bridging ligand (BL) for constructing various supramol. photocatalysts. The ligand bpy3Ph has been used to prepare, according to a multi-step synthetic protocol, trinuclear supramol. photocatalysts containing different metal subunits. In particular, the compounds Ru2Re and RuRe2 have been prepared, containing different ratios of components based on Ru(dmb)32+-type and Re(dmb)(CO)3Cl-type units (dmb = 4,4′-dimethyl-2,2′-bipyridine), which can play the roles of photosensitizers and catalyst units for photocatalytic CO2 reduction, resp. The trinuclear model Ru3 and mononuclear and dinuclear Ru and Ru2 precursor metal complexes, containing free chelating sites, have also been synthesized using the same bridging ligand. The absence of negligible accumulation of the mono-reduced form of the photosensitizer indicates fast electron transfer to the catalyst unit(s) through the relatively large bridging ligand and is proposed to contribute to the outstanding photocatalytic properties of the new species, including their durability. The relevant photocatalytic behavior of the new systems indicates new avenues for the design of extended bridging ligands capable of efficiently and functionally integrating photosensitizers and catalysts towards the preparation of new, larger supramol. photocatalysts for selective CO2 reduction In the experimental materials used by the author, we found 4,4′-Dimethyl-2,2′-bipyridine(cas: 1134-35-6Category: pyridine-derivatives)

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.Category: pyridine-derivatives 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

Application In Synthesis of 4-CyanopyridineIn 2020 ,《P-cymene complexes of ruthenium(II) as antitumor agents》 was published in Molecules. The article was written by Pujante-Galian, Maria Angeles; Perez, Sergio A.; Montalban, Mercedes G.; Carissimi, Guzman; Fuster, Marta G.; Villora, Gloria; Garcia, Gabriel. The article contains the following contents:

In this work, the cytotoxic behavior of six ruthenium(II) complexes of stoichiometry [(η6-p-cymene)RuCl2L] (I-VI), L = 4-cyanopyridine (I), 2-aminophenol (II), 4-aminophenol (III), pyridazine (IV), and [(η6-p-cymene)RuClL2]PF6; L = cyanopyridine (V), L = 2-aminophenol(VI) towards three cell lines was studied. Two of them, HeLa and MCF-7, are human carcinogenic cells from cervical carcinoma and human breast cancer, resp. A comparison with healthy cells was carried out with BGM cells which are monkey epithelial cells of renal origin. The behavior of complex II exhibits selectivity towards healthy cells, which is a promising feature for use in cancer treatment since it might reduce the side effects of most current therapies. The experimental part of the paper was very detailed, including the reaction process of 4-Cyanopyridine(cas: 100-48-1Application In Synthesis of 4-Cyanopyridine)

4-Cyanopyridine(cas: 100-48-1) belongs to pyridine. Pyridine and pyridine-derived structures are privileged pharmacophores in medicinal chemistry and an essential functionality for organic chemists. As the prototypical π-deficient heterocycle, pyridine illustrates distinctive chemistry as both substrate and reagent. Application In Synthesis of 4-Cyanopyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Name: Picolinic acidIn 2020 ,《The multiple faces of tryptophan in bone biology》 appeared in Experimental Gerontology. The author of the article were Al Saedi, Ahmed; Sharma, Shilpa; Summers, Matthew A.; Nurgali, Kulmira; Duque, Gustavo. The article conveys some information:

A review. Osteoporosis is highly prevalent in older persons. While many advances have been made in the field of osteoporosis, current treatments have been affected by unexpected side effects and limited efficacy; therefore, new approaches to identify disease mechanisms and pathways are required. This review focuses on the influence of tryptophan metabolites, particularly kynurenines and serotonin on bone. The kynurenine (KYN) pathway is associated with osteoblastogenesis and can be linked to the pathophysiol. of osteoporosis. The activity of osteoblasts is reduced by 3-hydroxykynurenine (3-HKYN), a product of KYN. In addition, decreasing concentrations of 3-hydroxyanthranilic acid with aging can be one of the causes of bone loss. In contrast, picolinic acid, an end-product of the KYN pathway, acts as a bone anabolic. On the other hand, gut-derived serotonin (GDS) inhibits bone formation, whereas brain-derived serotonin enhances bone formation and decreases bone resorption. Overall, understanding the exact mechanisms of action of tryptophan metabolites on bone could have great potential to develop effective treatments for osteoporosis and other bone diseases. The experimental process involved the reaction of Picolinic acid(cas: 98-98-6Name: Picolinic acid)

Picolinic acid(cas: 98-98-6) is used as a chelate for alkaline earth metals. Used to prepare picolinato ligated transition metal complexes. In synthetic organic chemistry, has been used as a substrate in the Mitsunobu reaction and in the Hammick reaction.Name: Picolinic acid

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Related Products of 98-98-6In 2022 ,《Ruthenium(II)-arene complexes as anti-metastatic agents, and related techniques》 appeared in RSC Medicinal Chemistry. The author of the article were Sonkar, Chanchal; Sarkar, Sayantan; Mukhopadhyay, Suman. The article conveys some information:

A review. With the discovery of cisplatin, a vast area of applications of metallodrugs in cancer treatment was opened but due to the side effects caused by the cisplatin complexes, researchers began to look for alternatives with similar anticancer properties but fewer side effects. Ruthenium was found to be a promising candidate, considering its significant anticancer properties and low side effects. Several ruthenium complexes, viz. NAMI-A, KP1019, KP1339, and TLD1433, have entered clin. trials. Some other arene ruthenium complexes such as RM175 and RAPTA-C have also entered clin. trials but very few of them have shown anti-metastatic properties. Herein, we provide information and probable mechanistic pathways for ruthenium(II)-arene complexes that have been studied, so far, for their anti-metastatic activities. Also, we discuss the techniques and their significance for determining the anti-metastatic effects of the complexes. In the experimental materials used by the author, we found Picolinic acid(cas: 98-98-6Related Products of 98-98-6)

Picolinic acid(cas: 98-98-6) is used as a chelate for alkaline earth metals. Used to prepare picolinato ligated transition metal complexes. In synthetic organic chemistry, has been used as a substrate in the Mitsunobu reaction and in the Hammick reaction.Related Products of 98-98-6

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Recommanded Product: 1692-25-7In 2022 ,《Design, synthesis and antitumor evaluation of novel quinazoline analogs in hepatocellular carcinoma cell》 appeared in Journal of Molecular Structure. The author of the article were Yu, Pan; Cao, Weiya; Yang, Shilong; Wang, Yuan; Xia, Aixin; Tan, Xinlan; Wang, Luyi. The article conveys some information:

In this paper, five quinazoline analogs I (R = Cl, 1H-indol-5-yl, 4-chlorophenyl, pyridin-3-yl, 4-aminophenyl) were preliminary designed through scaffold shopping from mTOR inhibitors and synthesized in four steps. Five compounds I exhibited potent antitumor activity against the HepG2 cell line by MTT assay. Compound I (R = 1H-indol-5-yl) (II) (IC50 = 4.06μM) was found as the most potent analog and showed better antiproliferative ability than sorafenib (IC50 = 6.14μM). The result of the wound healing assay and transwell migration assay indicated II strong potential to suppress HepG2 cell migration in a dose- and time-dependent manner. The underlying mechanism of its cytotoxicity was also investigated and the results of western blotting confirmed that compound II exposure could block the cell cycle, promote apoptosis and inhibit AKT and mTOR phosphorylation in HepG2 cells. Mol. docking further supported that compound II showed a high affinity to mTOR kinase. The results favored rational design intention and hinted that the new quinazolines I might be helpful in the further explorations of potent agents. In the experimental materials used by the author, we found Pyridin-3-ylboronic acid(cas: 1692-25-7Recommanded Product: 1692-25-7)

Pyridin-3-ylboronic acid(cas: 1692-25-7) belongs to pyridine. Pyridine and pyridine-derived structures are privileged pharmacophores in medicinal chemistry and an essential functionality for organic chemists. As the prototypical π-deficient heterocycle, pyridine illustrates distinctive chemistry as both substrate and reagent. Recommanded Product: 1692-25-7

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem