Category: 34941-92-9

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Transition-metal-free direct nucleophilic substitution of carboranyllithium and 2-halopyridines, published in 2019, which mentions a compound: 34941-92-9, Name is 4-Chloro-2-fluoropyridine, Molecular C5H3ClFN, HPLC of Formula: 34941-92-9.

A practical and efficient C(cage)-heteroarylation of carborane is presented, via direct nucleophilic substitution of carboranyllithium with 2-halopyridines. This reaction does not need the aid of any transition metal and utilizes readily available carboranyllithium nucleophiles, thereby avoiding transmetalation of carboranyllithium. The process exhibits a broad scope, and a vast array of 2-halopyridines have proven to be suitable substrates. The method serves as a complement to C(cage)-arylation reactions and may find wide applications in materials science and medicinal and coordination chem.

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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Tetrahydrofuran-Based Transient Receptor Potential Ankyrin 1 (TRPA1) Antagonists: Ligand-Based Discovery, Activity in a Rodent Asthma Model, and Mechanism-of-Action via Cryogenic Electron Microscopy, published in 2021-04-08, which mentions a compound: 34941-92-9, mainly applied to AM0902 oxadiazolone azabicyclohexane THF synthesis TRPA1 inflammation asthma pain, Computed Properties of C5H3ClFN.

Transient receptor potential ankyrin 1 (TRPA1) is a nonselective calcium-permeable ion channel highly expressed in the primary sensory neurons functioning as a polymodal sensor for exogenous and endogenous stimuli and has generated widespread interest as a target for inhibition due to its implication in neuropathic pain and respiratory disease. Herein, we describe the optimization of a series of potent, selective, and orally bioavailable TRPA1 small mol. antagonists, leading to the discovery of a novel tetrahydrofuran-based linker. Given the balance of physicochem. properties and strong in vivo target engagement in a rat AITC-induced pain assay, compound (I) was progressed into a guinea pig ovalbumin asthma model where it exhibited significant dose-dependent reduction of inflammatory response. Furthermore, the structure of the TRPA1 channel bound to compound (II) was determined via cryogenic electron microscopy to a resolution of 3 Å, revealing the binding site and mechanism of action for this class of antagonists. Tetrahydrofurans

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Design and Synthesis of N-Aryl Phenoxyethoxy Pyridinones as Highly Selective and CNS Penetrant mGlu3 NAMs》. Authors are Engers, Julie L.; Bollinger, Katrina A.; Weiner, Rebecca L.; Rodriguez, Alice L.; Long, Madeline F.; Breiner, Megan M.; Chang, Sichen; Bollinger, Sean R.; Bubser, Michael; Jones, Carrie K.; Morrison, Ryan D.; Bridges, Thomas M.; Blobaum, Anna L.; Niswender, Colleen M.; Conn, P. Jeffrey; Emmitte, Kyle A.; Lindsley, Craig W..The article about the compound:4-Chloro-2-fluoropyridinecas:34941-92-9,SMILESS:ClC1=CC(=NC=C1)F).Recommanded Product: 4-Chloro-2-fluoropyridine. Through the article, more information about this compound (cas:34941-92-9) is conveyed.

Herein, we detail the optimization of the mGlu3 NAM, VU0650786 (I), via a reductionist approach to afford a novel, simplified mGlu3 NAM scaffold II that engenders potent and selective mGlu3 inhibition (mGlu3 IC50 = 245 nM, mGlu2 IC50 > 30 μM) with excellent central nervous system penetration (rat brain/plasma Kp = 1.2, Kp,uu = 0.40). Moreover, this new chemotype, exemplified by VU6010572, requires only four synthetic steps and displays improved physiochem. properties and in vivo efficacy in a mouse tail suspension test (MED = 3 mg/kg i.p.).

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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: 34941-92-9, is researched, SMILESS is ClC1=CC(=NC=C1)F, Molecular C5H3ClFNJournal, Article, Organic Letters called Access to Highly Substituted 7-Azaindoles from 2-Fluoropyridines via 7-Azaindoline Intermediates, Author is Nuhant, Philippe; Allais, Christophe; Chen, Ming Z.; Coe, Jotham W.; Dermenci, Alpay; Fadeyi, Olugbeminiyi O.; Flick, Andrew C.; Mousseau, James J., the main research direction is azaindole preparation; azaindoline preparation regioselective electrophilic substitution bromination nitration oxidation; fluoronitroethylpyridine preparation oxidative Nef reaction reductive amination intramol SNAr; nitroolefin fluoropyridine metalation addition.Name: 4-Chloro-2-fluoropyridine.

A versatile synthesis of 7-azaindoles e. g., I, from substituted 2-fluoropyridines is described. C3-metalation and 1,4-addition to nitroolefins provide substituted 2-fluoro-3-(2-nitroethyl)pyridines. A facile oxidative Nef reaction/reductive amination/intramol. SNAr sequence furnishes 7-azaindolines. Finally, optional regioselective electrophilic C5-substitution (e.g., bromination or nitration) and subsequent in situ oxidation delivers highly functionalized 7-azaindoles in high overall efficiency.

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Recommanded Product: 34941-92-9. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 4-Chloro-2-fluoropyridine, is researched, Molecular C5H3ClFN, CAS is 34941-92-9, about Cross-Electrophile Coupling of Unactivated Alkyl Chlorides. Author is Sakai, Holt A.; Liu, Wei; Le, Chi “Chip”; MacMillan, David W. C..

Overcoming intrinsic limitations of C(sp3)-Cl bond activation, the development of a novel organosilane reagent Si(TMS)3(N)R1R2 (R1 = adamantyl, tert-Bu, i-Pr, n-Bu; R2 = H) that can participate in chlorine atom abstraction under mild photocatalytic conditions were reported. In particular, the application of this mechanism to a dual nickel/photoredox catalytic protocol that enables the first cross-electrophile coupling of unactivated alkyl chlorides R3Cl (R3 = cyclohexyl, oxan-4-yl, 4-cyanobutyl, etc.) and aryl chlorides R4Cl (R4 = pyridin-4-yl, quinolin-3-yl, 2-(methylsulfanyl)pyrimidin-5-yl, etc.) was described. Employing these low-toxicity, abundant, and com. available organochloride building blocks, this methodol. allows access to a broad array of highly functionalized C(sp2)-C(sp3) coupled adducts, e.g., I including numerous drug analogs.

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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: 34941-92-9, is researched, Molecular C5H3ClFN, about The reactivity of 2-fluoro- and 2-chloropyridines toward sodium ethoxide: Factors governing the rates of nucleophilic (het)aromatic substitutions, the main research direction is reactivity fluoropyridine chloropyridine sodium ethoxide nucleophilic aromatic heteroaromatic substitution.Computed Properties of C5H3ClFN.

The relative displacement rates of the halide substituent from 2-fluoro- and 2-chloropyridines by EtONa in EtOH at +25° were assessed by competition kinetics. The 2-fluoropyridine reacts 320 times faster than the chloro analog. A CF3 group increases the reactivity more than single halogen atoms do, whatever the element, and the latter are superior to Me3Si groups. Substituents accommodated at the 4-position operate through their inductive effect, whereas at the 3-position, this action may be attenuated by steric hindrance. Almost all 5-substituents enhance the rate of the nucleophilic substitution occurring at the 2-position. The sole exception concerns the F-atom at the 5-position which retards the reaction, presumably by lone-pair/lone-pair repulsion with the neg. charge building up at the central C-atom of the intermediate Meisenheimer complex. The substituent effects are additive. Therefore, by using the increments derived from the present work, the rates of future reactions should be predictable with fair accuracy.

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Pyrroline – Wikipedia,
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Computed Properties of C5H3ClFN. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 4-Chloro-2-fluoropyridine, is researched, Molecular C5H3ClFN, CAS is 34941-92-9, about Access to Highly Substituted 7-Azaindoles from 2-Fluoropyridines via 7-Azaindoline Intermediates. Author is Nuhant, Philippe; Allais, Christophe; Chen, Ming Z.; Coe, Jotham W.; Dermenci, Alpay; Fadeyi, Olugbeminiyi O.; Flick, Andrew C.; Mousseau, James J..

A versatile synthesis of 7-azaindoles e. g., I, from substituted 2-fluoropyridines is described. C3-metalation and 1,4-addition to nitroolefins provide substituted 2-fluoro-3-(2-nitroethyl)pyridines. A facile oxidative Nef reaction/reductive amination/intramol. SNAr sequence furnishes 7-azaindolines. Finally, optional regioselective electrophilic C5-substitution (e.g., bromination or nitration) and subsequent in situ oxidation delivers highly functionalized 7-azaindoles in high overall efficiency.

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Shaw, Megan H.; Shurtleff, Valerie W.; Terrett, Jack A.; Cuthbertson, James D.; MacMillan, David W. C. published an article about the compound: 4-Chloro-2-fluoropyridine( cas:34941-92-9,SMILESS:ClC1=CC(=NC=C1)F ).Quality Control of 4-Chloro-2-fluoropyridine. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:34941-92-9) through the article.

The use of sp3 C-H bonds-which are ubiquitous in organic mols.-as latent nucleophile equivalent for transition metal-catalyzed cross-coupling reactions has the potential to substantially streamline synthetic efforts in organic chem. while bypassing substrate activation steps. Through the combination of photoredox-mediated hydrogen atom transfer (HAT) and nickel catalysis, we have developed a highly selective and general C-H arylation protocol that activates a wide array of C-H bonds as native functional handles for cross-coupling. This mild approach takes advantage of a tunable HAT catalyst that exhibits predictable reactivity patterns based on enthalpic and bond polarity considerations to selectively functionalize α-amino and α-oxy sp3 C-H bonds in both cyclic and acyclic systems.

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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: 34941-92-9, is researched, SMILESS is ClC1=CC(=NC=C1)F, Molecular C5H3ClFNJournal, Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov’t, Journal of the American Chemical Society called Total Synthesis of (-)-Maximiscin, Author is McClymont, Kyle S.; Wang, Feng-Yuan; Minakar, Amin; Baran, Phil S., the main research direction is maximiscin enantioselective total synthesis.Name: 4-Chloro-2-fluoropyridine.

A short, enantioselective synthesis of (-)-maximiscin (I), a structurally intriguing metabolite of mixed biosynthetic origin, is reported. A retrosynthetic anal. predicated on maximizing ideality and efficiency led to several unusual disconnections and tactics. Formation of the central highly oxidized pyridone ring through a convergent coupling at the end of the synthesis simplified the route considerably. The requisite building blocks could be prepared from feedstock materials (derived from shikimate and mesitylene). Strategies rooted in hidden symmetry recognition, C-H functionalization, and radical retrosynthesis played key roles in developing this concise route.

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Electric Literature of C5H3ClFN. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 4-Chloro-2-fluoropyridine, is researched, Molecular C5H3ClFN, CAS is 34941-92-9, about C-O Cross-Coupling of Activated Aryl and Heteroaryl Halides with Aliphatic Alcohols. Author is Maligres, Peter E.; Li, Jing; Krska, Shane W.; Schreier, John D.; Raheem, Izzat T..

The authors describe a Pd/Josiphos catatyst system for alkoxylation of activated aryl and heteroaryl halides with primary, secondary, and select tertiary alcs. E.g., in presence of [Pd2(dba)3] and ligand CyPF-tBu (I), C-O cross-coupling of 4-chloro-2-methylquinoline and PhCH2CH2OH gave 99% aromatic ether 4-(2-phenylethoxy)-2-methylquinoline.

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