Category: 26218-78-0

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Journal of Organic Chemistry called Phosphine Oxides (-POMe2) for Medicinal Chemistry: Synthesis, Properties, and Applications, Author is Stambirskyi, Maksym V.; Kostiuk, Tetiana; Sirobaba, Serhii I.; Rudnichenko, Alexander; Titikaiev, Dmytro L.; Dmytriv, Yurii V.; Kuznietsova, Halyna; Pishel, Iryna; Borysko, Petro; Mykhailiuk, Pavel K., which mentions a compound: 26218-78-0, SMILESS is C1=NC(=CC=C1C(=O)OC)Br, Molecular C7H6BrNO2, Computed Properties of C7H6BrNO2.

A general practical approach to hetero(aromatic) and aliphatic P(O)Me2-substituted derivatives is elaborated. The key synthetic step was a [Pd]-mediated C-P coupling of (hetero)aryl bromides/iodides with HP(O)Me2. The P(O)Me2 substituent was shown to dramatically increase solubility and decrease lipophilicity of organic compounds This tactic was used to improve the solubility of the antihypertensive drug prazosin without affecting its biol. profile.

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Reference:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 26218-78-0, is researched, SMILESS is C1=NC(=CC=C1C(=O)OC)Br, Molecular C7H6BrNO2Journal, Article, Journal of Organic Chemistry called Reductive couplings of 2-halopyridines without external ligand: phosphine-free nickel-catalyzed synthesis of symmetrical and unsymmetrical 2,2′-bipyridines, Author is Liao, Lian-Yan; Kong, Xing-Rui; Duan, Xin-Fang, the main research direction is bipyridine preparation; halopyridine reductive coupling nickel catalyst.Application In Synthesis of Methyl 6-bromonicotinate.

An unexpectedly facile synthetic approach for sym. and unsym. 2,2′-bipyridines through the Ni-catalyzed reductive couplings of 2-halopyridines was developed. The couplings were efficiently catalyzed by 5 mol % of NiCl2·6H2O without the use of external ligands. A variety of 2,2′-bipyridines including caerulomycin F have been efficiently synthesized.

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Reference:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Preparation and characterization of a new bis-layered supported ionic liquid catalyst (SILCA) with an unprecedented activity in the Heck reaction》. Authors are Vucetic, Nemanja; Virtanen, Pasi; Nuri, Ayat; Mattsson, Ida; Aho, Atte; Mikkola, Jyri-Pekka; Salmi, Tapio.The article about the compound:Methyl 6-bromonicotinatecas:26218-78-0,SMILESS:C1=NC(=CC=C1C(=O)OC)Br).Formula: C7H6BrNO2. Through the article, more information about this compound (cas:26218-78-0) is conveyed.

A new bis-layered supported ionic liquid catalyst (SILCA) loaded with Pd was designed and applied for the Heck reaction of iodobenzene and Me acrylate. The SiO2 modified catalyst consisting of the 1st ionic liquid layer – covalently anchored imidazolium bromide – on which the 2nd layer, made of pyridine-carboxylic acid balanced with tetramethylguanidinium cation was attached, resulted in a catalyst with high activity. High turnover frequencies of 22,000 h-1 were achieved in reactions with a low Pd loading as 0.009 mol %. Lower TOFs, indicating on Pd dimerization was detected when higher amounts were used. The TMG cation had a purpose to recapture and stabilize the Pd nanoparticles thus followed a release and catch mechanism. To get a full understanding of the catalyst structure and behavior, the catalyst was characterized by N physisorption, TGA, IR spectroscopy, scanning electron and transmission electron microscopes, solid-state NMR, XPS and inductively coupled plasma spectroscopy. The catalyst preserved good activity in 5 cycles.

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Reference:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 26218-78-0, is researched, Molecular C7H6BrNO2, about Synthesis and biological activities of new HMG-COA synthase inhibitors: 2-oxetanones with a side chain containing biphenyl, terphenyl or phenylpyridine, the main research direction is HMGCoA synthase inhibition 1233A analog; oxetanone isostere preparation HMGCoA synthase inhibition.SDS of cas: 26218-78-0.

A series of 1233A analogs containing biphenylyl, terphenylyl or phenylpyridyl groups in their side chain were synthesized and tested for the inhibitory activities against 3-hydroxy-3-methylglutaryl CoA (HMG-CoA) synthase and inhibition of cholesterol biosynthesis in the mouse liver. The compounds with an oxetane, cyclobutanone or γ-butyrolactone ring as isosteres of a 2-oxetanone ring were entirely inactive. Among synthetic analogs, anti-4-[3-[2-(5-isopropyl-2-pyridyl)ethyl]phenyl]ethyl-3-hydroxymethyl-2-oxetanone was most active in vitro. The structure-activity relationships on the transformations of 2-oxetanone and its side chain were obtained.

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Reference:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Reference of Methyl 6-bromonicotinate. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Methyl 6-bromonicotinate, is researched, Molecular C7H6BrNO2, CAS is 26218-78-0, about Palladium catalyzed synthesis of indolizines via the carbonylative coupling of bromopyridines, imines and alkynes.

Authors report herein the development of a palladium-catalyzed, multicomponent synthesis of indolizines. The reaction proceeds via the carbonylative formation of a high energy, mesoionic pyridine-based 1,3-dipole, which can underwent spontaneous cycloaddition with alkynes. Overall, this provides a route to prepare indolizines in a modular fashion from combinations of com. available or easily generated reagents: 2-bromopyridines, imines and alkynes.

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Reference:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem