Tag: M.W=100-200

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 Three novel zinc(II) metal-organic frameworks based on three tetrazolate ligands: synthesis, structures and photoluminescence, published in 2014, which mentions a compound: 1195-58-0, Name is Pyridine-3,5-dicarbonitrile, Molecular C7H3N3, HPLC of Formula: 1195-58-0.

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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Application In Synthesis of 1-(4-Chlorophenyl)pyrrolidin-2-one. 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: 1-(4-Chlorophenyl)pyrrolidin-2-one, is researched, Molecular C10H10ClNO, CAS is 7661-33-8, about Lactams. VIII. Conformation of N-aryl lactams.

N-Aryl β-lactams were characterized by strong uv maximum at about 250 mμ. Some N-aryl γ-lactams also show similar absorption maximum but heavily substituted γ-lactams or N-phenyl δ-lactam display only low absorption in this region. A study of uv and N.M.R. spectra indicates that in N-aryl β-lactams, the heterocyclic ring and the three valences of N are planar and the N-aryl ring lies in the plane of the β-lactam. This planarity as well as the strong uv absorption are the result of an extended conjugation between the aryl ring and the amide function. Ortho substitution on the aryl ring causes a slight departure from this planarity and reduces the intensity of the uv absorption. In case of N-aryl γ-lactams, ortho substitution on the aryl ring causes enough departure from planarity to eliminate altogether the absorption maximum near 250 mμ. 22 references.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《On cyclic intermediates in substitution reactions. VII. The alkaline solvolysis of some N-aryl-4-bromobutanamides》. Authors are Heine, Harold W.; Love, Peter; Bove, John L..The article about the compound:1-(4-Chlorophenyl)pyrrolidin-2-onecas:7661-33-8,SMILESS:O=C1N(C2=CC=C(Cl)C=C2)CCC1).Product Details of 7661-33-8. Through the article, more information about this compound (cas:7661-33-8) is conveyed.

cf. C.A. 49, 1556b. The rates of the solvolysis of 3 N-aryl-4-bromobutanamides have been studied in MeOH. The rates of the reaction as determined by the measurement of the release of bromide ion are 1st order with respect to MeO-. The reaction products are the corresponding pyrrolidones. These results are discussed in terms of a mechanism involving the formation and conversion of a bromoamido ion to a pyrrolidone. SOCl2 (20 cc.) added dropwise to 37.1 g. Br(CH2)3CO2H, the mixture held 2 days at room temperature, the excess SOCl2 removed in vacuo, and the residue distilled gave a distillate, b31 88-90°, nD201.4899; a 37.1-g. sample of the distillate added dropwise with stirring to 37.2 g. PhNH2 in 500 cc. CHCl3, the mixture stirred 15 min., the precipitate filtered and washed with CHCl3, the combined filtrate and washing concentrated in vacuo, and the crude residue dissolved in ligroine, b. 65-110°, cooled, and then chilled to -78° gave 38% Br(CH2)3CONHPH (I), m. 75-6°. In the same manner except with a reaction time of 4 hrs. was prepared the p-Me derivative (II) of I, m. 90-1° (from petr. ether), in 63.2% yield. The p-Cl derivative (III) of I, m. 100-1° (from petr. ether), was prepared with a reaction time of 2 hrs. in 69.2% yield. A solution (100 cc.) 0.05M in NaOMe and 0.05M in III kept at 22.9° until all bromide ion had been released, the MeOH evaporated in vacuo, the residue washed with H2O, and the residue dried at 50° and recrystallized from petr. ether (b. 30-60°) gave 0.940 g. 1-(p-chlorophenyl)pyrrolidone (IV), m. 95-7°. The average rate constants of the alk. solvolyses determined at 22.90° were: III 5.65, I 1.80, and II 1.03 × 10 l./min./mole.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Pyridine-3,5-dicarbonitrile(SMILESS: N#CC1=CC(C#N)=CN=C1,cas:1195-58-0) is researched.Computed Properties of C4H6O3. The article 《Alkylation of pyridine-3,5-dicarboxamide and pyridine-3,5-dicarbonitriles by radical substitution》 in relation to this compound, is published in Journal of Heterocyclic Chemistry. Let’s take a look at the latest research on this compound (cas:1195-58-0).

Structural modification of NAD(P) model compounds, N,N,N’,N’-tetramethylpyridine-3,5-dicarboxamide (1), pyridine-3,5-dicarbonitrile (2), and 4-methylpyridine-3,5-dicarbonitrile (3), have been explored by the reaction with alkyl radicals such as the 1-adamantyl, tert-Bu, and iso-Pr radicals. The alkyl substitutions of compounds 1, 2, and 3 with the 1-adamantyl and the tert-Bu radical gave both 2-mono and 2,6-disubstitution products, whereas the reaction of compound 2 with the iso-Pr radical gave 2-mono- I, 2,4-di-, 2,6-di-, and 2,4,6-trisubstitution products.

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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 Ozonation of tertiary aromatic amines. II. Reactions of N,N-dialkylanilines with diethyl azodicarboxylate and with ozone, published in 1974, which mentions a compound: 7661-33-8, Name is 1-(4-Chlorophenyl)pyrrolidin-2-one, Molecular C10H10ClNO, Recommanded Product: 7661-33-8.

Thermolysis of the adduct I from N-phenylpyrrolidine and EtO2CN:NCO2Et gave the isomeric dimers II, which were also formed by ozonation of N-phenylpyrrolidine. The ozonation of 11 other N,N-dialkylanilines and 22-pyrrolylpyridines was also studied.

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Application of 7661-33-8. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 1-(4-Chlorophenyl)pyrrolidin-2-one, is researched, Molecular C10H10ClNO, CAS is 7661-33-8, about Selective synthesis of pyrrolidin-2-ones and 3-iodopyrroles via the ring contraction and deformylative functionalization of piperidine derivatives. Author is Wang, Fang; Zhang, Xinying; He, Yan; Fan, Xuesen.

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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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 Selenium heterocycles. XXXVII. Synthesis of 4-(thiazol-4-yl)-1,2,3-selenadiazoles and 4-(selenazol-4-yl)-1,2,3-selenadiazoles, published in 1986-06-30, which mentions a compound: 23002-78-0, Name is 1-(2-Methylthiazol-4-yl)ethanone, Molecular C6H7NOS, Product Details of 23002-78-0.

Starting from readily available 2-substituted-4-formylthiazoles and selenazoles, a series of selenazolylselenadiazoles I (R = e.g. Ph, 4-MeOC6H4, 4-BrC6H4; X = Se) and thiazolylselenadiazoles I (X = S) were prepared Pyrolysis of compound I (X = S) afforded thiazolylacetylenes II. Addition of KOH pellets to an alc. solution of I (X = S) gave diselenafulvenes III. Decomposition of compound I (X = S) with base followed by the addition of CS2 gave thiazolylthioxothiaselenoles IV.

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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 Selective Copper-Catalyzed N-Arylation of Lactams with Arylboronic Acids under Base- and Ligand-Free Conditions, published in 2015-06-30, which mentions a compound: 7661-33-8, Name is 1-(4-Chlorophenyl)pyrrolidin-2-one, Molecular C10H10ClNO, Electric Literature of C10H10ClNO.

An oxidative copper-catalyzed cross-coupling of arylboronic acids with various ring-size lactams has been developed. The N-arylated lactams were obtained in moderate to excellent yields without any addnl. bases, ligands, or additives. This reaction shows complete selectivity for N-arylation of lactams in the presence of a hydroxyl group.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 1-(4-Chlorophenyl)pyrrolidin-2-one(SMILESS: O=C1N(C2=CC=C(Cl)C=C2)CCC1,cas:7661-33-8) is researched.Recommanded Product: 4385-62-0. The article 《Synthesis of haptens and potential radioligands and development of antibodies to insect growth regulators diflubenzuron and BAY SIR 8514》 in relation to this compound, is published in Journal of Agricultural and Food Chemistry. Let’s take a look at the latest research on this compound (cas:7661-33-8).

A variety of synthetic approaches were undertaken, leading to potential haptens and radioligands for the benzoylphenylurea insect growth regulators diflubenzuron  [35367-38-5] and BAY SIR 8514  [64628-44-0]. One successful approach involved derivatization of the aniline N by Et 4-bromobutyrate followed by reaction with an appropriate isocyanate and cleavage of the Et ester to yield a free carboxypropyl “”handle””. Useful haptens were also synthesized by using a 3′-phenolic metabolite of diflubenzuron as well as acetate and amine functionalities in the 4′ position while the N-sulfenyl bond proved too unstable for use as an antigen. With the exception of the sulfenylated derivatives, the haptens lacked significant bol. activity on 3 insect species. Following protein coupling by the active ester or water-soluble diimide method, antibodies were raised to 2 diflubenzuron haptens in each of 7 rabbits immunized as demonstrated by radioimmunoassay using [14C]diflubenzuron, Ouchterlony gel diffusion, and immunoelectrophoresis.

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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: 1-(4-Chlorophenyl)pyrrolidin-2-one, is researched, Molecular C10H10ClNO, CAS is 7661-33-8, about Cyclization of N-arylcyclopropanecarboxamides into N-arylpyrrolidinones-2 under electron ionization and in the condensed phase.COA of Formula: C10H10ClNO.

Mass spectrometry is known as an excellent method to predict the behavior of organic compounds in solution The behavior of organic compounds in the gas-phase inside an ion source of a mass spectrometer allows their intrinsic properties to be defined, avoiding the influence of intermol. interactions, counter ions and solvent effects. Arylpyrrolidinones-2 were obtained by condensed phase synthesis from the corresponding N-arylcyclopropanecarboxamides. Electron ionization (EI) with accurate mass measurements by high-resolution time-of-flight mass-spectrometry and quantum chem. calculations were used to understand the behavior of the mol. radical cations of N-arylcyclopropanecarboxamides and N-arylpyrrolidinones-2 in the ion source of a mass spectrometer. The geometries of the mols., transition states, and intermediates were fully optimized using DFT-PBE calculations Fragmentation schemes, ion structures, and possible mechanisms of primary isomerization were proposed for isomeric N-arylcyclopropanecarboxamides and N-arylpyrrolidinones-2. Based on the fragmentation pattern of the N-arylcyclopropanecarboxamides, isomerization of the original M+· ions into the M+· ions of the N-arylpyrrolidinones-2 was shown to be only a minor process. On the contrary, this cyclization proceeds easily in the condensed phase in the presence of the Bronsted acids. Based on the exptl. data and quantum chem. calculations the principal mechanism of decomposition of the mol. ions of N-arylcyclopropanecarboxamides involves their direct fragmentation without any rearrangements. An alternative mechanism is responsible for the isomerization of a small portion of the higher energy mol. ions into the corresponding N-arylpyrrolidinones-2 ions.

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