Category: 53939-30-3

Lee, So Jeong; Morales-Colon, Maria T.; Brooks, Allen F.; Wright, Jay S.; Makaravage, Katarina J.; Scott, Peter J. H.; Sanford, Melanie S. published their research in Journal of Organic Chemistry in 2021. The article was titled 《SNAr Radiofluorination with In-Situ Generated [18F]Tetramethylammonium Fluoride》.Recommanded Product: 53939-30-3 The article contains the following contents:

This report described a method for the nucleophilic radiofluorination of (hetero)aryl chlorides, (hetero)aryl triflates, and nitroarenes using a combination of [18F]KF·K2.2.2 and Me4NHCO3 for the in-situ formation of a strongly nucleophilic fluorinating reagent (proposed to be [18F]Me4NF). This method was applied to 24 substrates bearing diverse functional groups, and it generates [18F](hetero)aryl fluoride products in good to excellent radiochem. yields in the presence of ambient air/moisture. The reaction was applied to the preparation of 18F-labeled HQ-415 for potential (pre)clin. use. In the part of experimental materials, we found many familiar compounds, such as 5-Bromo-2-chloropyridine(cas: 53939-30-3Recommanded Product: 53939-30-3)

5-Bromo-2-chloropyridine(cas: 53939-30-3) belongs to pyridine. In industry and in the lab, pyridine is used as a reaction solvent, particularly when its basicity is useful, and as a starting material for synthesizing some herbicides, fungicides, and antiseptics.Recommanded Product: 53939-30-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

《Rare-Earth-Metal-Catalyzed Synthesis of Azaindolines and Naphthyridines via C-H Cyclization of Functionalized Pyridines》 was published in Advanced Synthesis & Catalysis in 2020. These research results belong to Ye, Pengqing; Shao, Yinlin; Zhang, Fangjun; Zou, Jinxuan; Ye, Xuanzeng; Chen, Jiuxi. Category: pyridine-derivatives The article mentions the following:

A rare-earth-metal-catalyzed insertion of a 2-pyridine C(sp2)-H bond into an intramol. unactivated vinyl bond was reported. This reaction provides streamlined access to a range of azaindolines in moderate to excellent yields. The salient features of this reaction include simple and mild reaction conditions, 100% atom efficiency, and wide substrate scope. This methodol. is also used to construct other nitrogen-containing compounds such as naphthyridine derivatives A plausible mechanism for the formation of azaindolines involving initial C-H bond activation by the lanthanide complex followed by C=C insertion into a Ln-C bond to form an alkyl lanthanide species that subsequently undergoes cyclization was proposed. In addition to this study using 5-Bromo-2-chloropyridine, there are many other studies that have used 5-Bromo-2-chloropyridine(cas: 53939-30-3Category: pyridine-derivatives) was used in this study.

5-Bromo-2-chloropyridine(cas: 53939-30-3) belongs to pyridine. In industry and in the lab, pyridine is used as a reaction solvent, particularly when its basicity is useful, and as a starting material for synthesizing some herbicides, fungicides, and antiseptics.Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Wang, Dong; Shen, Meng; Wang, Yuxi; Hu, Jianyong; Zhao, Junjie; Yu, Peng published 《Access to Furo[2,3-b]pyridines by Transition-Metal-Free Intramolecular Cyclization of C3-substituted Pyridine N-oxides》.Asian Journal of Organic Chemistry published the findings.HPLC of Formula: 53939-30-3 The information in the text is summarized as follows:

Two transition-metal-free synthetic methods for the construction of furo[2,3-b]pyridines such as I [R = H, 5-F, 5-Me, etc.; R1 = Me, Et, Ph, etc.; R2 = Me, Et, Ph, etc.] from corresponding C3-substituted-pyridine-N-oxides were developed by regioselective intramol. nucleophilic addition/rearomatization strategy. Remarkable features of these methods include simple operation, wide substrate scope and easily accessible starting materials. After reading the article, we found that the author used 5-Bromo-2-chloropyridine(cas: 53939-30-3HPLC of Formula: 53939-30-3)

5-Bromo-2-chloropyridine(cas: 53939-30-3) 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. HPLC of Formula: 53939-30-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Zhang, Yue-Mei; Greco, Michael N.; Macielag, Mark J.; Teleha, Christopher A.; DesJarlais, Renee L.; Tang, Yuting; Ho, George; Hou, Cuifen; Chen, Cailin; Zhao, Shuyuan; Kauffman, Jack; Camacho, Raul; Qi, Jenson; Murray, William; Demarest, Keith; Leonard, James published 《6-Benzhydryl-4-amino-quinolin-2-ones as Potent Cannabinoid Type 1 (CB1) Receptor Inverse Agonists and Chemical Modifications for Peripheral Selectivity》.Journal of Medicinal Chemistry published the findings.Category: pyridine-derivatives The information in the text is summarized as follows:

A novel series of 6-benzhydryl-4-amino-quinolin-2-ones was discovered as cannabinoid type 1 receptor (CB1R) inverse agonists based on the high-throughput screening hit, compound 1a. Structure-activity relationships were studied to improve in vitro/in vivo pharmacol. and restrict distribution to the peripheral circulation. We adopted several strategies such as increasing topol. polar surface area, incorporating discrete polyethylene glycol side chains, and targeting P-glycoprotein (P-gp) to minimize access to the brain. Compound 6a is a P-gp substrate and a potent and highly selective CB1R inverse agonist, demonstrating excellent in vivo metabolic stability and a low brain to plasma ratio. However, brain receptor occupancy studies showed that compound 6a may accumulate in brain with repeat dosing. This was evidenced by compound 6a inhibiting food intake and inducing weight loss in diet-induced obese mice. Thus, a strategy based on P-gp efflux may not be adequate for peripheral restriction of the disclosed quinolinone series. The results came from multiple reactions, including the reaction of 5-Bromo-2-chloropyridine(cas: 53939-30-3Category: pyridine-derivatives)

5-Bromo-2-chloropyridine(cas: 53939-30-3) belongs to pyridine. Pyridine’s structure is isoelectronic with that of benzene, but its properties are quite different. Pyridine is completely miscible with water, whereas benzene is only slightly soluble. Like all hydrocarbons, benzene is neutral (in the acid–base sense), but because of its nitrogen atom, pyridine is a weak base.Category: pyridine-derivatives

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2018,Chen, Tie-Gen; Barton, Lisa M.; Lin, Yutong; Tsien, Jet; Kossler, David; Bastida, Inaki; Asai, Shota; Bi, Cheng; Chen, Jason S.; Shan, Mingde; Fang, Hui; Fang, Francis G.; Choi, Hyeong-wook; Hawkins, Lynn; Qin, Tian; Baran, Phil S. published 《Building C(sp3)-rich complexity by combining cycloaddition and C-C cross-coupling reactions》.Nature (London, United Kingdom) published the findings.Name: 5-Bromo-2-chloropyridine The information in the text is summarized as follows:

Prized for their ability to rapidly generate chem. complexity by building new ring systems and stereocentres, cycloaddition reactions have featured in numerous total syntheses and are a key component in the education of chem. students. Similarly, carbon-carbon (C-C) cross-coupling methods are integral to synthesis because of their programmability, modularity and reliability. Within the area of drug discovery, an overreliance on cross-coupling has led to a disproportionate representation of flat architectures that are rich in carbon atoms with orbitals hybridized in an sp2 manner. Despite the ability of cycloadditions to introduce multiple carbon sp3 centers in a single step, they are less used. This is probably because of their lack of modularity, stemming from the idiosyncratic steric and electronic rules for each specific type of cycloaddition Here we demonstrate a strategy for combining the optimal features of these two chem. transformations into one simple sequence, to enable the modular, enantioselective, scalable and programmable preparation of useful building blocks, natural products and lead scaffolds for drug discovery. The results came from multiple reactions, including the reaction of 5-Bromo-2-chloropyridine(cas: 53939-30-3Name: 5-Bromo-2-chloropyridine)

5-Bromo-2-chloropyridine(cas: 53939-30-3) 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: 5-Bromo-2-chloropyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2019,Chemistry – A European Journal included an article by Sinha, Narayan; Heijnen, Dorus; Feringa, Ben L.; Organ, Michael G.. SDS of cas: 53939-30-3. The article was titled 《Murahashi cross-coupling at -78 °C: a one-pot procedure for sequential C-C/C-C, C-C/C-N and C-C/C-S cross-coupling of bromo-chloro-arenes》. The information in the text is summarized as follows:

The coupling of organolithium reagents, including strongly hindered examples, with (hetero)aryl bromides at cryogenic temperatures (as low as -78 °C) was achieved with high-reactivity Pd-NHC catalysts to obtain arenes. A temperature-dependent chemoselectivity trigger was developed for synthesis of arenes by selective coupling of aryl bromides in the presence of chlorides. Building on this, a one-pot, sequential coupling strategy was presented for the rapid construction of arenes, amines and thioethers. Importantly, preparation of arenes by one-shot addition of alkyllithium compounds to Pd cross-coupling reactions was achieved, eliminating the need for slow addition by syringe pump. After reading the article, we found that the author used 5-Bromo-2-chloropyridine(cas: 53939-30-3SDS of cas: 53939-30-3)

5-Bromo-2-chloropyridine(cas: 53939-30-3) belongs to pyridine. In industry and in the lab, pyridine is used as a reaction solvent, particularly when its basicity is useful, and as a starting material for synthesizing some herbicides, fungicides, and antiseptics.SDS of cas: 53939-30-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2019,Journal of Organic Chemistry included an article by Yoritate, Makoto; Londregan, Allyn T.; Lian, Yajing; Hartwig, John F.. Product Details of 53939-30-3. The article was titled 《Sequential Xanthalation and O-Trifluoromethylation of Phenols: A Procedure for the Synthesis of Aryl Trifluoromethyl Ethers》. The information in the text is summarized as follows:

Many of the known methods to synthesize aryl trifluoromethyl ethers require harsh reagents and highly controlled reaction conditions and rarely occur when heteroaromatic units are present. The two-step O-trifluoromethylation of phenols via aryl xanthates is one such method that suffers from these drawbacks. Herein, author report a method for the synthesis of aryl trifluoromethyl ethers from phenols by the facile conversion of the phenol to the corresponding aryl and heteroaryl xanthates with newly synthesized imidazolium methylthiocarbonothioyl salts and conversion of these xanthates to the trifluoromethyl ethers under mild reaction conditions. In the experimental materials used by the author, we found 5-Bromo-2-chloropyridine(cas: 53939-30-3Product Details of 53939-30-3)

5-Bromo-2-chloropyridine(cas: 53939-30-3) belongs to pyridine. In industry and in the lab, pyridine is used as a reaction solvent, particularly when its basicity is useful, and as a starting material for synthesizing some herbicides, fungicides, and antiseptics.Product Details of 53939-30-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

In 2019,Chemistry – A European Journal included an article by Sinha, Narayan; Champagne, Pier Alexandre; Rodriguez, Michael J.; Lu, Yu; Kopach, Michael E.; Mitchell, David; Organ, Michael G.. Quality Control of 5-Bromo-2-chloropyridine. The article was titled 《One-Pot Sequential Kumada-Tamao-Corriu Couplings of (Hetero)Aryl Polyhalides in the Presence of Grignard-Sensitive Functional Groups Using Pd-PEPPSI-IPentCl》. The information in the text is summarized as follows:

We report a general and rapid chemoselective Kumada-Tamao-Corriu (KTC) cross-coupling of aryl bromides in the presence of chlorides or triflates with functionalized Grignard reagents at 0 °C in 15 min by using Pd-PEPPSI-IPentCl (C4) [e.g., 1-bromo-4-chlorobenzene + (4-cyanophenyl)magnesium bromide → 4′-chlorobiphenyl-4-carbonitrile (91% isolated) in presence of C4 (I)].. Nucleophiles and electrophiles (or both) can contain Grignard-sensitive functional groups (-CN, -COOR, etc.). Control experiments together with DFT calculations suggest that transmetallation is rate limiting for the selective cross-coupling of Br in the presence of Cl/OTf with functionalized Grignard reagents. One-pot sequential KTC/KTC cross-couplings with bromo-chloro arenes have been demonstrated for the first time. We also report the one-pot sequential KTC/Negishi cross-couplings using C4 showcasing the versatility of this methodol.5-Bromo-2-chloropyridine(cas: 53939-30-3Quality Control of 5-Bromo-2-chloropyridine) was used in this study.

5-Bromo-2-chloropyridine(cas: 53939-30-3) belongs to pyridine. Pyridines are often used as catalysts or reagents; particular notice has been paid recently to how pyridine coordinates to metal centers enabling a wide range of valuable reactions. Quality Control of 5-Bromo-2-chloropyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

《Photochemically Mediated Nickel-Catalyzed Synthesis of N-(Hetero)aryl Sulfamides》 was written by Simons, R. Thomas; Scott, Georgia E.; Kanegusuku, Anastasia Gant; Roizen, Jennifer L.. Application In Synthesis of 5-Bromo-2-chloropyridine And the article was included in Journal of Organic Chemistry in 2020. The article conveys some information:

A general method for the N-arylation of sulfamides with aryl bromides is described. The protocol leverages a dual-catalytic system, with [Ir(ppy)2(dtbbpy)]PF6 as a photosensitizer, NiBr2•glyme as a precatalyst, and DBU as a base, and proceeds at room temperature under visible light irradiation Using these tactics, aryl boronic esters and aryl chlorides can be carried through the reaction untouched. The developed reactions efficiently engage simple bromoarenes and primary sulfamides in between 66% and quant. yields. For more challenging substrates, such as secondary sulfamides, reaction efficiency is documented. Thereby, these methods complement known Buchwald-Hartwig coupling methods for N-arylation of sulfamides. A general method for the N-arylation of sulfamides with aryl bromides is described. The protocol leverages a dual-catalytic system of Ni and a photoexcitable Ir complex and proceeds at room temperature under visible light irradiation Using these tactics, aryl boronic esters and aryl chlorides can be carried through the reaction untouched. Thereby, this method complements known Buchwald-Hartwig coupling methods for N-arylation of sulfamides. The experimental part of the paper was very detailed, including the reaction process of 5-Bromo-2-chloropyridine(cas: 53939-30-3Application In Synthesis of 5-Bromo-2-chloropyridine)

5-Bromo-2-chloropyridine(cas: 53939-30-3) 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. Application In Synthesis of 5-Bromo-2-chloropyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

《Photochemically Mediated Nickel-Catalyzed Synthesis of N-(Hetero)aryl Sulfamides》 was written by Simons, R. Thomas; Scott, Georgia E.; Kanegusuku, Anastasia Gant; Roizen, Jennifer L.. Application In Synthesis of 5-Bromo-2-chloropyridine And the article was included in Journal of Organic Chemistry in 2020. The article conveys some information:

A general method for the N-arylation of sulfamides with aryl bromides is described. The protocol leverages a dual-catalytic system, with [Ir(ppy)2(dtbbpy)]PF6 as a photosensitizer, NiBr2•glyme as a precatalyst, and DBU as a base, and proceeds at room temperature under visible light irradiation Using these tactics, aryl boronic esters and aryl chlorides can be carried through the reaction untouched. The developed reactions efficiently engage simple bromoarenes and primary sulfamides in between 66% and quant. yields. For more challenging substrates, such as secondary sulfamides, reaction efficiency is documented. Thereby, these methods complement known Buchwald-Hartwig coupling methods for N-arylation of sulfamides. A general method for the N-arylation of sulfamides with aryl bromides is described. The protocol leverages a dual-catalytic system of Ni and a photoexcitable Ir complex and proceeds at room temperature under visible light irradiation Using these tactics, aryl boronic esters and aryl chlorides can be carried through the reaction untouched. Thereby, this method complements known Buchwald-Hartwig coupling methods for N-arylation of sulfamides. The experimental part of the paper was very detailed, including the reaction process of 5-Bromo-2-chloropyridine(cas: 53939-30-3Application In Synthesis of 5-Bromo-2-chloropyridine)

5-Bromo-2-chloropyridine(cas: 53939-30-3) 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. Application In Synthesis of 5-Bromo-2-chloropyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem