Category: 34941-92-9

Jin, Hao; Gao, Zhuo; Zhou, Shaodong; Qian, Chao published an article about the compound: 4-Chloro-2-fluoropyridine( cas:34941-92-9,SMILESS:ClC1=CC(=NC=C1)F ).HPLC of Formula: 34941-92-9. 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.

A novel method for preparation of aryl cyclopropyl ethers I [Ar = 1-ClC6H4, 2-O2NC6H4, 4-chloro-2-pyridyl, etc.] via nucleophilic aromatic substitution reaction (SNAr) of fluoroarom. compounds with cyclopropanol under relatively mild conditions was developed. The reaction was performed at 75 °C with Cs2CO3 as the base and DMF as solvent, after 6 h the yield was up to 90%. Finally, various fluoroarom. compounds were employed as substrates for a test that proved a wide application scope of the method.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 4-Chloro-2-fluoropyridine(SMILESS: ClC1=CC(=NC=C1)F,cas:34941-92-9) is researched.Recommanded Product: 27328-68-3. The article 《The reactivity of 2-fluoro- and 2-chloropyridines toward sodium ethoxide: Factors governing the rates of nucleophilic (het)aromatic substitutions》 in relation to this compound, is published in Helvetica Chimica Acta. Let’s take a look at the latest research on this compound (cas:34941-92-9).

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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Application In Synthesis of 4-Chloro-2-fluoropyridine. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 4-Chloro-2-fluoropyridine, is researched, Molecular C5H3ClFN, CAS is 34941-92-9, about Synthesis of N-alkylated 2-pyridones through Pummerer type reactions of activated sulfoxides and 2-fluoropyridine derivatives. Author is Hu, Gang; Xu, Jiaxi; Li, Pingfan.

N-Alkylated 2-pyridone products were obtained in good to excellent yields through a one-pot procedure involving either normal or interrupted Pummerer reactions between triflic anhydride activated sulfoxides and 2-fluoropyridine derivatives, followed by hydrolysis. This is a rare case that uses 2-fluoropyridine as a nucleophile in Pummerer type reactions.

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Formula: C5H3ClFN. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 4-Chloro-2-fluoropyridine, is researched, Molecular C5H3ClFN, CAS is 34941-92-9, about The reactivity of 2-fluoro- and 2-chloropyridines toward sodium ethoxide: Factors governing the rates of nucleophilic (het)aromatic substitutions. Author is Schlosser, Manfred; Rausis, Thierry.

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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Schrader, Thomas O.; Zhu, Xiuwen; Kasem, Michelle; Li, Sufang; Liu, Chunyan; Ren, Albert; Wu, Chunrui; Semple, Graeme published the article 《Asymmetric syntheses of (R)-4-halo-6,6a,7,8,9,10-hexahydro-5H-pyrazino[1,2-a][1,n]naphthyridines, important 5-HT2C agonist precursors》. Keywords: halo pyrazinonaphthyridine diastereoselective synthesis precursor 5HT2C agonist.They researched the compound: 4-Chloro-2-fluoropyridine( cas:34941-92-9 ).Related Products of 34941-92-9. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:34941-92-9) here.

Asym. syntheses of N-protected (R)-4-halo-6,6a,7,8,9,10-hexahydro-5H-pyrazino[1,2-a][1,n]naphthyridines, advanced intermediates for the synthesis of highly potent and selective 5-HT2C agonists, are described. The key transformation involves ring opening of N-protected bicyclic sulfamidate (R)-hexahydro-3H-pyrazino[1,2-c][1,2,3]oxathiazine 1,1-dioxide with (4-halo-2-fluoropyridin-3-yl)lithiums or (3-bromo-5-fluoropyridin-4-yl)lithium. In situ hydrolyzes of the resultant sulfamic acids and subsequent intramol. nucleophilic aromatic substitutions (SNAr) produce the enantiopure tricycles. The two step procedure represents new methodol. for the stereoselective syntheses of tetrahydronaphthyridines.

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Pyrroline – Wikipedia,
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Name: 4-Chloro-2-fluoropyridine. 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 One-Pot Approach for SNAr Reaction of Fluoroaromatic Compounds with Cyclopropanol. Author is Jin, Hao; Gao, Zhuo; Zhou, Shaodong; Qian, Chao.

A novel method for preparation of aryl cyclopropyl ethers I [Ar = 1-ClC6H4, 2-O2NC6H4, 4-chloro-2-pyridyl, etc.] via nucleophilic aromatic substitution reaction (SNAr) of fluoroarom. compounds with cyclopropanol under relatively mild conditions was developed. The reaction was performed at 75 °C with Cs2CO3 as the base and DMF as solvent, after 6 h the yield was up to 90%. Finally, various fluoroarom. compounds were employed as substrates for a test that proved a wide application scope of the method.

If you want to learn more about this compound(4-Chloro-2-fluoropyridine)Name: 4-Chloro-2-fluoropyridine, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(34941-92-9).

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. 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.Related Products of 34941-92-9.

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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Sakai, Holt A.; Liu, Wei; Le, Chi “Chip”; MacMillan, David W. C. published an article about the compound: 4-Chloro-2-fluoropyridine( cas:34941-92-9,SMILESS:ClC1=CC(=NC=C1)F ).Safety 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.

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 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, the main research direction is 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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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, Tetrahedron Letters called Asymmetric syntheses of (R)-4-halo-6,6a,7,8,9,10-hexahydro-5H-pyrazino[1,2-a][1,n]naphthyridines, important 5-HT2C agonist precursors, Author is Schrader, Thomas O.; Zhu, Xiuwen; Kasem, Michelle; Li, Sufang; Liu, Chunyan; Ren, Albert; Wu, Chunrui; Semple, Graeme, which mentions a compound: 34941-92-9, SMILESS is ClC1=CC(=NC=C1)F, Molecular C5H3ClFN, Synthetic Route of C5H3ClFN.

Asym. syntheses of N-protected (R)-4-halo-6,6a,7,8,9,10-hexahydro-5H-pyrazino[1,2-a][1,n]naphthyridines, advanced intermediates for the synthesis of highly potent and selective 5-HT2C agonists, are described. The key transformation involves ring opening of N-protected bicyclic sulfamidate (R)-hexahydro-3H-pyrazino[1,2-c][1,2,3]oxathiazine 1,1-dioxide with (4-halo-2-fluoropyridin-3-yl)lithiums or (3-bromo-5-fluoropyridin-4-yl)lithium. In situ hydrolyzes of the resultant sulfamic acids and subsequent intramol. nucleophilic aromatic substitutions (SNAr) produce the enantiopure tricycles. The two step procedure represents new methodol. for the stereoselective syntheses of tetrahydronaphthyridines.

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