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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 Copper-catalyzed C-N coupling of amides and nitrogen-containing heterocycles in the presence of cesium fluoride, published in 2009-12-30, which mentions a compound: 7661-33-8, Name is 1-(4-Chlorophenyl)pyrrolidin-2-one, Molecular C10H10ClNO, Reference of 1-(4-Chlorophenyl)pyrrolidin-2-one.

The copper-catalyzed C-N coupling of amides to aryl halides usually requires the use of strong alkali metal bases, such as K2CO3, K3PO4, and Cs2CO3, at high temperature We discovered that CsF is sufficiently basic to promote the cross-coupling of amides and carbamates with aryl halides. Most aryl iodides coupled in high yield at room temperature This alternative base may be a suitable replacement for substrates that are incompatible with high temperature and strongly basic conditions and can further enhance the chemoselectivity of this reaction.

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Related Products of 1195-58-0. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Pyridine-3,5-dicarbonitrile, is researched, Molecular C7H3N3, CAS is 1195-58-0, about Three novel zinc(II) metal-organic frameworks based on three tetrazolate ligands: synthesis, structures and photoluminescence. Author is He, Hongming; Sun, Fuxing; Zhao, Nian; Yuan, Rongrong; Zhu, Guangshan.

Three metal-organic frameworks (MOFs), [Zn(BPT)H2O] (JUC-121), [Zn5(IBT)6]·8[H2NMe2]·DMA (JUC-122) and [Zn(TPD)(H2O)2]·0.5H2O (JUC-123) (JUC = Jilin University, China), H2BPT = (5-bromo-1,3-phenylene)bis(tetrazole), H3IBT = 4,5-bis(tetrazol-5-yl)imidazole and H2TPD = 3,5-di(tetrazol-5-yl)pyridine, were obtained by the reactions of Zn(NO3)2·6H2O and three tetrazolate ligands, which were characterized by single crystal x-ray diffraction, thermal gravimetric analyses (TGA), FTIR spectra (FTIR), elemental anal. (CHN) and powder X-ray diffraction (PXRD). From the crystal structures of these complexes and the coordination modes of the ligands, the authors can see that the tetrazolate ligands have multi-connectivity abilities to obtain intriguing varieties of mol. architectures. JUC-121 displays a three-dimensional (3D) network with the point symbol (4·65)2(42·84)(64·82). JUC-122 shows a two-dimensional (2D) framework with the point symbol (243)2(24)9 and JUC-123 has a 2-dimensional bimodal (3, 3)-connected net with the point symbol (4·82). The solid-state fluorescent spectra of JUC-121, JUC-122, JUC-123 and the free ligands were measured at room temperature

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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 Selective synthesis of pyrrolidin-2-ones and 3-iodopyrroles via the ring contraction and deformylative functionalization of piperidine derivatives, published in 2019, which mentions a compound: 7661-33-8, mainly applied to piperidine ring contraction deformylative functionalization pyrrolidinone iodopyrrole synthesis, Product Details of 7661-33-8.

In this paper, a selective synthesis of pyrrolidin-2-ones and 3-iodopyrroles via the cascade reactions of N-substituted piperidines is presented [e.g., N-phenylpiperidine → N-phenyl-2-pyrrolidinone (58%) in presence of Cu(OAc)2/KI/Oxone/O2 in MeCN and N-phenylpiperidine → 3-iodo-N-phenylpyrrole (65%) in presence of Cu(OAc)2/I2/DMAP/O2 in MeCN]. Mechanistically, the formation of pyrrolidin-2-ones involves a domino process including the in situ formation of pyrrolidine-2-carbaldehyde followed by carboxylic acid formation, decarboxylation and ipso-oxidation On the other hand, 3-iodopyrroles are believed to be formed via the initial generation of pyrrolidine-2-carbaldehyde followed by carboxylic acid formation, decarboxylation, dehydrogenation, iodination and aromatization. Interestingly, either pyrrolidin-2-ones or 3-iodopyrroles could be obtained selectively from the same substrates, and the selectivity was easily tuned by using a specific oxidant and additive.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Dihydropyridines. XII. Electronic structure and reactivity of monocyanopyridines and symmetric dicyanopyridines》. Authors are Kuthan, J..The article about the compound:Pyridine-3,5-dicarbonitrilecas:1195-58-0,SMILESS:N#CC1=CC(C#N)=CN=C1).Product Details of 1195-58-0. Through the article, more information about this compound (cas:1195-58-0) is conveyed.

cf. CA 65, 3828a. The electronic structure of 2-cyanopyridine, 3-cyanopyridine, 4-cyanopyridine, 2,6-dicyanopyridine, and 3,5-dicyanopyridine were studied by means of the simple mol. orbital theory (HMO). The reactivity of these compounds toward nucleophilic reagents is discussed with respect to possible formation of corresponding dihydro derivatives or products with transformed functional groups. Ir, N.M.R., and uv spectra of the compounds studied are compared with the calculated values for the bond orders, π-electron densities, and with the theoretical excitation energies. Bond orders and π-electron densities as calculated on the basis of HMO-approximation are correlated with analogous data obtained by the self-consistent-field method.

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Product Details of 7661-33-8. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 1-(4-Chlorophenyl)pyrrolidin-2-one, is researched, Molecular C10H10ClNO, CAS is 7661-33-8, about Dipole moments of substituted 1-phenyl-2-pyrrolidones. Author is Virtanen, P. Olavi I.; Ruostesuo, Pirkko; Ruostesuo, Pirkko.

The dipole moments of 1-phenyl-2-pyrrolidone and its 2′-methyl, 3′-methyl, 4′-methyl, 2′-chloro, 3′-chloro, 4′-chloro, 2′-methoxy, 3′-methoxy, and 4′-methoxy derivatives were measured in dioxane at 30° and the dipole moments of the 1st 4 compounds also in cyclohexane at 30°. The dipole moments were larger in dioxane than in cyclohexane. The dipole moments of all the compounds except 1-(3-methoxyphenyl)-2-pyrrolidone and 1-(4-methoxyphenyl)-2-pyrrolidone agree with the values calculated by applying Eyring’s treatment and assuming free rotation of the pyrrolidonyl group about the bond joining it to the aromatic ring.

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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: 23002-78-0, is researched, Molecular C6H7NOS, about Heterocycles from amino ketones. XIV. Thiazolyl- and pyrrolylquinolines, the main research direction is quinoline; thiazoles; pyrrylquinolines; thiazolylquinolines.Electric Literature of C6H7NOS.

2-(R-Substituted)-4-(R1-substituted)-quinolines (I) [where R = 2-methylthiazol-4-yl (II), 2-phenylthiazol-4-yl, 2,4-dimethylthiazol-5-yl, 2-phenyl-4-methylthiazol-5-yl, 2-amino-4-methylthiazol-5-yl, or 2-pyrryl (III); and R1 = Me or Ph] were prepared by the method of K. et al. (1964). I showed pronounced fluorescence and were tested as fluorescence indicators. Reaction of MeCSNH2 with BrCH2COC(NOH)Me gave 2-methyl-4-acetylthiazole-3-oxime, which was saponified to 2-methyl-4-acetylthiazole.

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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: 1195-58-0, is researched, Molecular C7H3N3, about Dihydropyridines. XVIII. Atom localization energies of monocyanopyridines and symmetrical dicyanopyridines, the main research direction is cyanopyridines localization energy; localization energy cyanopyridines.Product Details of 1195-58-0.

Satisfactory agreement was found between the exptl. data of nucleophilic and homolytic reactions of monocyanopyridines and sym. dicyanopyridines and the corresponding atom localization energies. The calculation of π-elec-tonic structure of these compounds was carried out by the Hueckel M.O. L.C.A.O. method.

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Synthetic Route of C10H10ClNO. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 1-(4-Chlorophenyl)pyrrolidin-2-one, is researched, Molecular C10H10ClNO, CAS is 7661-33-8, about Amidation of Aryl Chlorides Using a Microwave-Assisted, Copper-Catalyzed Concurrent Tandem Catalytic Methodology. Author is Chang, Raymond K.; Clairmont, Brice P.; Lin, Shirley; MacArthur, Amy H. Roy.

A copper iodide-catalyzed concurrent tandem catalytic (CTC) methodol. has been developed for the amidation of aryl chlorides where the aryl chloride is first converted to an aryl iodide via halogen exchange and the aryl iodide is subsequently transformed into the N-aryl secondary or tertiary amide. A variety of aryl chlorides were converted to aryl amides in up to 85% isolated yield using 20 mol% CuI, 60 mol% N,N’-cyclohexane-1,2-diamine, 2.2 equiv of K2CO3, and 1.05-1.5 equiv of amide in acetonitrile at 200° after 0.75-1 h. The same copper/ligand system served as multifunctional catalyst for both steps of the concurrent catalytic process with iodide present in substoichiometric amounts Mechanistic studies are consistent with CTC amidation occurring via a nonradical mechanism. Kinetic modeling was conducted to investigate the effect of competitive direct amidation of an aryl chloride or aryl bromide on the formation of product over time during a CTC amidation reaction.

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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 Photochemistry of dicyanopyridines, published in 1995-09-13, which mentions a compound: 1195-58-0, mainly applied to photochem dicyanopyridine UV laser flash photolysis, Synthetic Route of C7H3N3.

The photochem. of a variety of dicyanopyridines (2,3-, 2,4-, 2,5-, 2,6-, 3,4- and 3,5-dicyanopyridine) in solution at room temperature was investigated. Pulsed UV (308 nm) laser irradiation in deoxygenated acetonitrile yields the triplet state with lifetimes between 4 and 10 μs and absorption bands in the 400 and 320 nm regions. In the presence of added HCl an air-insensitive transient (τ≈10-12 μs, λmax≈360-380 nm) was observed, suggesting the formation of a protonated excited state. Irradiation in the presence of amines resulted in the production of the pyridyl radical anion (τ≈40-80 μs, air sensitive, λmax≈360-380 nm) formed by electron transfer from the amine to the pyridine triplet excited state. Stern-Volmer anal. gave electron transfer rate constants in the range (1-8)×10-8 M-1s-1. In methanol solvent, irradiation yielded an air-insensitive transient assigned as the neutral pyridyl radical (τ≈30-200 μs, λmax≈370-385 nm). The formation of these transients is discussed in the context of previous photochem. ESR and product studies.

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Formula: C10H10ClNO. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 1-(4-Chlorophenyl)pyrrolidin-2-one, is researched, Molecular C10H10ClNO, CAS is 7661-33-8, about Decrease in intestinal permeability to polyethylene glycol 1000 during development in the pig. Author is Westroem, B. R.; Tagesson, C.; Leandersson, P.; Folkesson, H. G.; Svendsen, J..

Changes in intestinal permeability during postnatal development in the pig were investigated by using different-sized polyethylene glycols (PEGs) in the Mr 766-1338 range (PEG 1000) as permeability probes. Pigs of varying age, newborn (0 h), 36-45 h old, and 22-28 days old, were gavage-fed PEG 1000 together with the macromol. markers bovine serum albumin, ovalbumin, or FITC-labeled dextran 70,000. The 4-h blood serum concentrations of the different markers were determined and taken as an estimate of their intestinal transmission. In the newborn pigs, high serum levels of PEGs were obtained, concomitant with high serum levels of bovine serum albumin and FITC-dextran. After intestinal macromol. closure in the 36-45 h-old pigs, lower serum PEG levels were found, especially of those with a Mr > 1100 Da. In the 22-28 day-old pigs, PEG levels were reduced to ≤10% of those in the 36-45-h-old pigs, with the levels decreasing markedly with increasing mol. size. These results show that there is a correlation between the intestinal permeability of PEGs, especially those >1100 Da, and macromols. in the newborn pig around intestinal closure, suggesting that such PEGs traverse the gut by the macromol. route. During later development, further intestinal maturation results in a markedly reduced permeability to PEG 1000.

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