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. 5315-25-3, formula is C6H6BrN, Name is 2-Bromo-6-methylpyridine. TThe standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. COA of Formula: C6H6BrN.

Schwartz, Leyah A.;Spielmann, Kim;Swyka, Robert A.;Xiang, Ming;Krische, Michael J. research published 《 Formate-Mediated Cross-Electrophile Reductive Coupling of Aryl Iodides and Bromopyridines》, the research content is summarized as follows. Two catalytic systems for the formate-mediated cross-electrophile reductive coupling of aryl iodides with 6-bromopyridines were described. Using homogenous rhodium or heterogeneous palladium catalysts, the products of reductive biaryl cross-coupling could be formed in moderate yield with excellent levels of chemoselectivity.

COA of Formula: C6H6BrN, 2-Bromo-6-methylpyridine (2BMPy) is a bromopyridine derivative. It is formed when 2-chloro-6-methylpyridine is heated with bromotrimethylsilane. Its synthesis from various methods have been reported.
2-Bromo-6-methylpyridine is a building block in the preparation of nitrogen containing heterocyclic compounds.
2-Bromo-6-methylpyridine is an organic compound that belongs to the group of pyridinium halides. It is soluble in common solvents such as water, ethanol, and acetone. 2BMPy has been shown to act as a glutamate receptor antagonist and has been used in the study of glutamate receptors, including their subtypes. This chemical has also been shown to have antioxidant properties and can be used in the prevention of atherosclerosis., 5315-25-3.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine is a basic heterocyclic organic compound with the chemical formula C5H5N. It is structurally related to benzene, with one methine group (=CH−) replaced by a nitrogen atom. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. It is a highly flammable, weakly alkaline, water-miscible liquid with a distinctive, unpleasant fish-like smell. Electric Literature of 766-11-0.

Schimler, Sydonie D.;Ryan, Sarah J.;Bland, Douglas C.;Anderson, John E.;Sanford, Melanie S. research published 《 Anhydrous Tetramethylammonium Fluoride for Room-Temperature S_NAr Fluorination》, the research content is summarized as follows. This paper describes the room-temperature S_NAr fluorination of aryl halides and nitroarenes using anhydrous tetramethylammonium fluoride (NMe₄F). This reagent effectively converts aryl-X (X = Cl, Br, I, NO₂, OTf) to aryl-F under mild conditions (often room temperature). Substrates for this reaction include electron-deficient heteroaromatics (22 examples) and arenes (5 examples). The relative rates of the reactions vary with X as well as with the structure of the substrate. However, in general, substrates bearing X = NO₂ or Br react fastest. In all cases examined, the yields of these reactions are comparable to or better than those obtained with CsF at elevated temperatures (i.e., more traditional halex fluorination conditions). The reactions also afford comparable yields on scales ranging from 100 mg to 10 g. A cost anal. is presented, which shows that fluorination with NMe₄F is generally more cost-effective than fluorination with CsF.

766-11-0, 5-Bromo-2-fluoropyridine is a useful research compound. Its molecular formula is C5H3BrFN and its molecular weight is 175.99 g/mol. The purity is usually 95%.
5-Bromo-2-fluoropyridine is a boronic acid that has been shown to react with iodides and form 5-bromo-2-fluoroiodobenzene. The reaction of 5-bromo-2-fluoropyridine with benzene gives the same product as the reaction with 1,3,5-trioxane. The UV absorption of 5-bromo-2-fluoropyridine is found at 230 nm and 260 nm. It also has an absorption band in the infrared region at 1625 cm−1. Vibrational progressions have been observed for this molecule, which are due to dipole moments and electron density distributions in the molecule.
5-bromo-2-fluoropyridine is used in the synthesis of heteroaromatic and aniline derivatives of piperidines as potent ligands used for vesicular acetylcholine transport. , Electric Literature of 766-11-0

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In contrast to benzene, Pyridine’s electron density is not evenly distributed over the ring, reflecting the negative inductive effect of the nitrogen atom. 5315-25-3, formula is C6H6BrN, Name is 2-Bromo-6-methylpyridine. For this reason, pyridine has a dipole moment and a weaker resonant stabilization than benzene (resonance energy 117 kJ·mol−1 in pyridine vs. 150 kJ·mol−1 in benzene). Reference of 5315-25-3.

Santoro, Antonio;Holub, Jan;Fik-Jaskolka, Marta A.;Vantomme, Ghislaine;Lehn, Jean-Marie research published 《 Dynamic Helicates Self-Assembly from Homo- and Heterotopic Dynamic Covalent Ligand Strands》, the research content is summarized as follows. The understanding and the application of reversible covalent reactions and coordination chem. together with the proper design of the mol. frameworks, allow to achieve not only well-defined output architectures but also different grades of complex behavior. In this work, the dynamic nature of the helical systems offers an addnl. level of complexity by combining self-sorting on two levels: (1) the build-up of the ligand strand constituents from their components through dynamic covalent chem.; (2) the assembly of the helicates from the ligands and the metal cations through dynamic metallo-supramol. chem. The information encoded in the ligands constituent mol. was read differently (and accurately at the same time) by metal cations that varied in the coordination algorithms. It enabled the selective formation of a specific type of helicates from a wide library of helicates formed by the possible combination of subcomponents. Ligands containing dynamic tridentate and/or bidentate binding motifs in the same strand were studied to explore the helicates self-assembly with appropriate metal cations.

Reference of 5315-25-3, 2-Bromo-6-methylpyridine (2BMPy) is a bromopyridine derivative. It is formed when 2-chloro-6-methylpyridine is heated with bromotrimethylsilane. Its synthesis from various methods have been reported.
2-Bromo-6-methylpyridine is a building block in the preparation of nitrogen containing heterocyclic compounds.
2-Bromo-6-methylpyridine is an organic compound that belongs to the group of pyridinium halides. It is soluble in common solvents such as water, ethanol, and acetone. 2BMPy has been shown to act as a glutamate receptor antagonist and has been used in the study of glutamate receptors, including their subtypes. This chemical has also been shown to have antioxidant properties and can be used in the prevention of atherosclerosis., 5315-25-3.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine has a conjugated system of six π electrons that are delocalized over the ring. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. The molecule is planar and, thus, follows the Hückel criteria for aromatic systems. Name: 5-Bromo-2-fluoropyridine.

Sander, Kerstin;Gendron, Thibault;Yiannaki, Elena;Cybulska, Klaudia;Kalber, Tammy L.;Lythgoe, Mark F.;Arstad, Erik research published 《 Sulfonium Salts as Leaving Groups for Aromatic Labelling of Drug-like Small Molecules with Fluorine-18》, the research content is summarized as follows. Positron emission tomog. (PET) is unique in that it allows quantification of biochem. processes in vivo, but difficulties with preparing suitably labeled radiotracers limit its scientific and diagnostic applications. Aromatic [¹⁸F]fluorination of drug-like small mols. is particularly challenging as their functional group compositions often impair the labeling efficiency. Herein, we report a new strategy for incorporation of ¹⁸F into highly functionalized aromatic compounds using sulfonium salts as leaving groups. The method is compatible with pharmacol. relevant functional groups, including aliphatic amines and basic heterocycles. Activated substrates react with [¹⁸F]fluoride at room temperature, and with heating the reaction proceeds in the presence of hydrogen bond donors. Furthermore, the use of electron rich spectator ligands allows efficient and regioselective [¹⁸F]fluorination of non-activated aromatic moieties. The method provides a broadly applicable route for ¹⁸F labeling of biol. active small mols., and offers immediate practical benefits for drug discovery and imaging with PET.

766-11-0, 5-Bromo-2-fluoropyridine is a useful research compound. Its molecular formula is C5H3BrFN and its molecular weight is 175.99 g/mol. The purity is usually 95%.
5-Bromo-2-fluoropyridine is a boronic acid that has been shown to react with iodides and form 5-bromo-2-fluoroiodobenzene. The reaction of 5-bromo-2-fluoropyridine with benzene gives the same product as the reaction with 1,3,5-trioxane. The UV absorption of 5-bromo-2-fluoropyridine is found at 230 nm and 260 nm. It also has an absorption band in the infrared region at 1625 cm−1. Vibrational progressions have been observed for this molecule, which are due to dipole moments and electron density distributions in the molecule.
5-bromo-2-fluoropyridine is used in the synthesis of heteroaromatic and aniline derivatives of piperidines as potent ligands used for vesicular acetylcholine transport. , Name: 5-Bromo-2-fluoropyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine is colorless, but older or impure samples can appear yellow. 5315-25-3, formula is C6H6BrN, Name is 2-Bromo-6-methylpyridine. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Historically, pyridine was produced from coal tar. Related Products of 5315-25-3.

Sailaja, E.;Bhavani, S.;Rambabu, D.;Basaveswara Rao, M. V.;Pal, Manojit research published 《 A greener approach toward N-1 heteroarylation of indoles: Synthesis and in vitro evaluation of potential anti-proliferative agents》, the research content is summarized as follows. A greener approach was developed to synthesize N-pyridyl indoles e.g., I [R¹ = R² = H, R³ = 2-pyridyl] and N-pyrimidinyl indoles e.g., I [R¹ = R² = H, R³ = 2-pyrimidinyl] via an ultrasound assisted selective N-1 heteroarylation of indoles. This methodol. involved reaction of indoles with heteroaryl halides in PEG-400 under ultrasound irradiation Compound I [R¹ = R² = H, R³ = 2-pyrimidinyl] was benzoylated at C-2 position via palladium-mediated C-H bond activation. All the synthesized N-1 heteroarylindoles were tested for their in vitro anti-proliferative properties against cancer (leukemia) and non-cancerous cell lines. Among the tested compounds, compounds I [R¹ = H; R² = 5-OMe; R³ = 2-pyridyl, 5-Me-2-pyridyl, 2-pyrimidinyl] showed promising activity against K562 leukemia cells whereas compound I [R¹ = H, R² = 5-OMe, R³ = 2-pyrimidinyl] showed significant activity against Colo-205 cells. Addnl., none of these N-heteroaryl indoles showed any effect against noncancerous HEK293 cell lines, indicating their selectivity toward cancer cells specifically leukemia.

Related Products of 5315-25-3, 2-Bromo-6-methylpyridine (2BMPy) is a bromopyridine derivative. It is formed when 2-chloro-6-methylpyridine is heated with bromotrimethylsilane. Its synthesis from various methods have been reported.
2-Bromo-6-methylpyridine is a building block in the preparation of nitrogen containing heterocyclic compounds.
2-Bromo-6-methylpyridine is an organic compound that belongs to the group of pyridinium halides. It is soluble in common solvents such as water, ethanol, and acetone. 2BMPy has been shown to act as a glutamate receptor antagonist and has been used in the study of glutamate receptors, including their subtypes. This chemical has also been shown to have antioxidant properties and can be used in the prevention of atherosclerosis., 5315-25-3.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

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. 1603-41-4, formula is C6H8N2, Name is 2-Amino-5-methylpyridine. TThe standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase and 140.4 kJ·mol−1 in the gas phase. COA of Formula: C6H8N2.

Sagar, Sneha R.;Singh, Devendra Pratap;Das, Rajesh D.;Panchal, Nirupa B.;Sudarsanam, Vasudevan;Nivsarkar, Manish;Vasu, Kamala K. research published 《 Investigations on substituted (2-aminothiazol-5-yl)(imidazo[1,2-a]pyridin-3-yl)methanones for the treatment of Alzheimer’s disease》, the research content is summarized as follows. Herein authors report of a new series of substituted (2-aminothiazol-5-yl)(imidazo[1,2-a]pyridin-3-yl)methanones I (R¹ = H, Me; R² = H, Me, Ph, NMe₂). The designed compounds were synthesized and characterized by spectral data. In vivo anti-inflammatory activity was carried out for screening of anti-inflammatory potential of synthesized compounds All the compounds were tested for acute inflammatory activity by using carrageenan induced acute inflammation model. Compounds I (R¹ = 8-Me, R² = NMe₂; R¹ = 7-Me, R² = NMe₂; R¹ = 7-Me, R² = H) had shown promising acute anti-inflammatory activity and they were further tested for formalin induced chronic inflammation model. Compound I (R¹ = 7-Me, R² = NMe₂)10c showed both acute and chronic anti-inflammatory activity. Compound I also showed promising results in AlCl3 induced AD model. Studies on various behavioral parameters suggested improved amnesic performance of compound I treated rats. Compound I treated rats also exhibited excellent antioxidant and neuroprotective effect with inherent gastrointestinal safety.

1603-41-4, 2-Amino-5-methylpyridine, also known as 2-Amino-5-methylpyridine, is a useful research compound. Its molecular formula is C6H8N2 and its molecular weight is 108.14 g/mol. The purity is usually 95%.
2-Amino-5-methylpyridine is a chemical compound that belongs to the group of methyl ketones. It has a nitrogen atom and an oxygen atom in its structure, which allows it to form hydrogen bonds with other molecules. 2-Amino-5-methylpyridine can be obtained by reacting hydrochloric acid and xanthone in the presence of a base. The compound is highly reactive and has been shown to have antiinflammatory properties. This can be attributed to its ability to inhibit prostaglandin synthesis. 2-Amino-5-methylpyridine also has fluorescence properties that are sensitive to pH changes and can be used as a probe for metal ions. 2-Amino-5-methylpyridine is an organic compound that contains a methyl group, two nitrogen atoms, and one oxygen atom in its chemical structure. This molecule can form hydrogen bonds with other molecules due to its nitrogen atoms and oxygen atom,, COA of Formula: C6H8N2

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine is colorless, but older or impure samples can appear yellow. 1603-41-4, formula is C6H8N2, Name is 2-Amino-5-methylpyridine. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Historically, pyridine was produced from coal tar. Product Details of C6H8N2.

Saeed, Hani Yeslam;Wagare, Devendra S.;Shaikh, Mujahed;Durrani, Ayesha research published 《 Microwave-promoted One-pot Synthesis of Imidazo[1,2-a]pyridines in Lemon Juice》, the research content is summarized as follows. A simple and highly efficient microwave-promoted procedure for the synthesis of imidazo[1,2-a]pyridine derivatives I [R = H, 6-Me, 6-Cl; R¹ = H, 2-Cl; R² = H, 2,4-di-Cl, 4-OMe, etc.] from the reaction of aromatic ketones, N-bromosuccinimide and 2-aminopyridines in lemon juice was designed. The main advantages of this protocol, such as clean reaction profile, mild reaction condition, high yield and min. reaction time, were compared to other previously developed methods. In the present investigation, an environmentally benign, easy, and highly efficient one-pot procedure for the synthesis of 2-phenylimidazo [1, 2-a] pyridines from the reaction of aromatic ketones, N-bromosuccinimide and 2-aminopyridines in lemon juice as a natural acid catalyst and solvent under microwave irradiation was developed. This new protocol offered very attractive features such as min. reaction time, clean reaction profile, mild reaction condition, and green aspects such as avoid poisonous catalyst, hazardous solvents, ease of the work-up procedure, and higher yield.

Product Details of C6H8N2, 2-Amino-5-methylpyridine, also known as 2-Amino-5-methylpyridine, is a useful research compound. Its molecular formula is C6H8N2 and its molecular weight is 108.14 g/mol. The purity is usually 95%.
2-Amino-5-methylpyridine is a chemical compound that belongs to the group of methyl ketones. It has a nitrogen atom and an oxygen atom in its structure, which allows it to form hydrogen bonds with other molecules. 2-Amino-5-methylpyridine can be obtained by reacting hydrochloric acid and xanthone in the presence of a base. The compound is highly reactive and has been shown to have antiinflammatory properties. This can be attributed to its ability to inhibit prostaglandin synthesis. 2-Amino-5-methylpyridine also has fluorescence properties that are sensitive to pH changes and can be used as a probe for metal ions. 2-Amino-5-methylpyridine is an organic compound that contains a methyl group, two nitrogen atoms, and one oxygen atom in its chemical structure. This molecule can form hydrogen bonds with other molecules due to its nitrogen atoms and oxygen atom,, 1603-41-4.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Pyridine is a basic heterocyclic organic compound with the chemical formula C5H5N. It is structurally related to benzene, with one methine group (=CH−) replaced by a nitrogen atom. 16133-25-8, formula is C5H4ClNO2S, Name is Pyridine-3-sulfonyl chloride. It is a highly flammable, weakly alkaline, water-miscible liquid with a distinctive, unpleasant fish-like smell. Quality Control of 16133-25-8.

Ryder, Alison S. H.;Cunningham, William B.;Ballantyne, George;Mules, Tom;Kinsella, Anna G.;Turner-Dore, Jacob;Alder, Catherine M.;Edwards, Lee J.;McKay, Blandine S. J.;Grayson, Matthew N.;Cresswell, Alexander J. research published 《 Photocatalytic α-Tertiary Amine Synthesis via C-H Alkylation of Unmasked Primary Amines》, the research content is summarized as follows. A practical, catalytic entry to α,α,α-trisubstituted (α-tertiary) primary amines by C-H functionalization has long been recognized as a critical gap in the synthetic toolbox. The authors report a simple and scalable solution to this problem that does not require any in situ protection of the amino group and proceeds with 100% atom-economy. The authors’ strategy, which uses an organic photocatalyst in combination with azide ion as a hydrogen atom transfer (HAT) catalyst, provides a direct synthesis of α-tertiary amines, or their corresponding γ-lactams. The authors anticipate that this methodol. will inspire new retrosynthetic disconnections for substituted amine derivatives in organic synthesis, and particularly for challenging α-tertiary primary amines.

Quality Control of 16133-25-8, Pyridine-3-sulfonyl chloride is a useful research compound. Its molecular formula is C5H4ClNO2S and its molecular weight is 177.61 g/mol. The purity is usually 95%.
Pyridine-3-sulfonyl chloride is a reagent used in the synthesis of pyrimidine derivatives with anti-proliferative activity against negative breast cancer cells.
Pyridine-3-sulfonyl chloride is a chemical compound that binds to the active site of cytochrome P450 enzymes. It can be used to study the effects of matrix effect on reaction solution. Pyridine-3-sulfonyl chloride has been shown to have an UV absorption spectrum with a maximum at 280 nm and a p450 activity that is proportional to the concentration of human serum. This compound has been shown to inhibit kinase domain in vitro assays, which may have clinical relevance in the treatment of obesity., 16133-25-8.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

At 25 °C pyridine has a viscosity of 0.88 mPa/s and thermal conductivity of 0.166 W·m−1·K−1. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. The enthalpy of vaporization is 35.09 kJ·mol−1 at the boiling point and normal pressure.The enthalpy of fusion is 8.28 kJ·mol−1 at the melting point. Product Details of C5H3BrFN.

Ryan, Sarah J.;Schimler, Sydonie D.;Bland, Douglas C.;Sanford, Melanie S. research published 《 Acyl Azolium Fluorides for Room Temperature Nucleophilic Aromatic Fluorination of Chloro- and Nitroarenes》, the research content is summarized as follows. The reaction of acid fluorides with N-heterocyclic carbenes (NHCs) produces anhydrous acyl azolium fluorides. With appropriate selection of the acid fluoride and NHC, these salts can be used for the room temperature S_NAr fluorination of a variety of aryl chlorides and nitroarenes. E.g., in presence of N-heterocyclic carbene (I) and 4-MeOC₆H₄COF, fluorination of aryl chloride (II) gave 99% aryl fluoride (III).

Product Details of C5H3BrFN, 5-Bromo-2-fluoropyridine is a useful research compound. Its molecular formula is C5H3BrFN and its molecular weight is 175.99 g/mol. The purity is usually 95%.
5-Bromo-2-fluoropyridine is a boronic acid that has been shown to react with iodides and form 5-bromo-2-fluoroiodobenzene. The reaction of 5-bromo-2-fluoropyridine with benzene gives the same product as the reaction with 1,3,5-trioxane. The UV absorption of 5-bromo-2-fluoropyridine is found at 230 nm and 260 nm. It also has an absorption band in the infrared region at 1625 cm−1. Vibrational progressions have been observed for this molecule, which are due to dipole moments and electron density distributions in the molecule.
5-bromo-2-fluoropyridine is used in the synthesis of heteroaromatic and aniline derivatives of piperidines as potent ligands used for vesicular acetylcholine transport. , 766-11-0.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

The critical parameters of pyridine are pressure 6.70 MPa, temperature 620 K and volume 229 cm3·mol−1. 766-11-0, formula is C5H3BrFN, Name is 5-Bromo-2-fluoropyridine. In the temperature range 340–426 °C its vapor pressure p can be described with the Antoine equation.. COA of Formula: C5H3BrFN.

Ruzi, Rehanguli;Liu, Kai;Zhu, Chengjian;Xie, Jin research published 《 Upgrading ketone synthesis direct from carboxylic acids and organohalides》, the research content is summarized as follows. A photoredox, nickel and phosphoranyl radical synergistic cross-electrophile coupling of com. available chems., aromatic acids RCO₂H (R = 4-methylphenyl, thiophen-3-yl, naphthalen-2-yl, etc.) and aryl/alkyl bromides R¹Br (R¹ = 6-(trifluoromethyl)pyridin-3-yl, 2-cyanoethyl, quinolin-3-yl, etc.) was reported. This allows for concise synthesis of highly functionalized ketones RC(O)R¹directly, without the preparation of activated carbonyl intermediates or organometallic compounds, and thus complements the conventional Weinreb ketone synthesis. Use of the appropriate photocatalyst, ligand amount and solvents can match the reaction rate required by any simple catalytic cycle. The practicality and synthetic robustness of the reaction are illustrated by the facile synthesis of complex ketones from readily available feedstock chems.

766-11-0, 5-Bromo-2-fluoropyridine is a useful research compound. Its molecular formula is C5H3BrFN and its molecular weight is 175.99 g/mol. The purity is usually 95%.
5-Bromo-2-fluoropyridine is a boronic acid that has been shown to react with iodides and form 5-bromo-2-fluoroiodobenzene. The reaction of 5-bromo-2-fluoropyridine with benzene gives the same product as the reaction with 1,3,5-trioxane. The UV absorption of 5-bromo-2-fluoropyridine is found at 230 nm and 260 nm. It also has an absorption band in the infrared region at 1625 cm−1. Vibrational progressions have been observed for this molecule, which are due to dipole moments and electron density distributions in the molecule.
5-bromo-2-fluoropyridine is used in the synthesis of heteroaromatic and aniline derivatives of piperidines as potent ligands used for vesicular acetylcholine transport. , COA of Formula: C5H3BrFN

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem