Category: 7661-33-8

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: 7661-33-8, is researched, Molecular C10H10ClNO, about Synthesis of haptens and potential radioligands and development of antibodies to insect growth regulators diflubenzuron and BAY SIR 8514, the main research direction is immunochem analysis diflubenzuron BAYSIR8514; hapten radioligand insect growth regulator.HPLC of Formula: 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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SDS of cas: 7661-33-8. 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: 1-(4-Chlorophenyl)pyrrolidin-2-one, is researched, Molecular C10H10ClNO, CAS is 7661-33-8, about Iridium(III)-catalyzed regioselective direct arylation of sp2 C-H bonds with diaryliodonium salts. Author is Gao, Pan; Liu, Li; Shi, Zhuangzhi; Yuan, Yu.

A regioselective direct arylation of arenes and olefins with aryliodonium salts at the ortho position to provide biaryl compounds, e.g., I was reported. The key to the high selectivity was the appropriate choice of aryliodonium salts as the arylating reagent in presence of a cationic iridium(III) catalyst. The coordination of the metal with an oxygen atom or a nitrogen atom and subsequent C-H activation allowed for direct arylation with coupling partners. This reaction proceeded under mild reaction conditions and with a high tolerance of various functional groups including many halide functional groups.

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Electric Literature 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 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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Wie, Siong I.; Sylwester, Alan P.; Wing, Keith D.; Hammock, Bruce D. published the article 《Synthesis of haptens and potential radioligands and development of antibodies to insect growth regulators diflubenzuron and BAY SIR 8514》. Keywords: immunochem analysis diflubenzuron BAYSIR8514; hapten radioligand insect growth regulator.They researched the compound: 1-(4-Chlorophenyl)pyrrolidin-2-one( cas:7661-33-8 ).HPLC of Formula: 7661-33-8. 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:7661-33-8) here.

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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Feng, Kaibo; Quevedo, Raundi E.; Kohrt, Jeffrey T.; Oderinde, Martins S.; Reilly, Usa; White, M. Christina published an article about the compound: 1-(4-Chlorophenyl)pyrrolidin-2-one( cas:7661-33-8,SMILESS:O=C1N(C2=CC=C(Cl)C=C2)CCC1 ).Electric Literature of C10H10ClNO. 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:7661-33-8) through the article.

Frequently referred to as the ‘magic Me effect’, the installation of Me groups-especially adjacent (α) to heteroatoms-has been shown to dramatically increase the potency of biol. active mols.1-3. However, existing methylation methods show limited scope and have not been demonstrated in complex settings1. Here, we report a regioselective and chemoselective oxidative C(sp3)-H methylation method that is compatible with late-stage functionalization of drug scaffolds and natural products. This combines a highly site-selective and chemoselective C-H hydroxylation with a mild, functional-group-tolerant methylation. Using a small-mol. manganese catalyst, Mn(CF3PDP), at low loading (at a substrate/catalyst ratio of 200) affords targeted C-H hydroxylation on heterocyclic cores, while preserving electron-neutral and electron-rich aryls. Fluorine- or Lewis-acid-assisted formation of reactive iminium or oxonium intermediates enables the use of a mildly nucleophilic organoaluminum methylating reagent that preserves other electrophilic functionalities on the substrate. We show this late-stage C(sp3)-H methylation on 41 substrates housing 16 different medicinally important cores that include electron-rich aryls, heterocycles, carbonyls and amines. Eighteen pharmacol. relevant mols. with competing sites, including drugs (for example, tedizolid) and natural products, are methylated site-selectively at the most electron rich, least sterically hindered position. We demonstrate the syntheses of two magic Me substrates, an inverse agonist for the nuclear receptor RORc and an antagonist of the sphingosine-1-phosphate receptor-1, via late-stage methylation from the drug or its advanced precursor. We also show a remote methylation of the B-ring carbocycle of an abiraterone analog. The ability to methylate such complex mols. at late stages will reduce synthetic effort and thereby expedite broader exploration of the magic Me effect in pursuit of new small-mol. therapeutics and chem. probes.

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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.Donnier-Marechal, Marion; Carato, Pascal; Larchanche, Paul-Emmanuel; Ravez, Severine; Boulahjar, Rajaa; Barczyk, Amelie; Oxombre, Benedicte; Vermersch, Patrick; Melnyk, Patricia researched the compound: 1-(4-Chlorophenyl)pyrrolidin-2-one( cas:7661-33-8 ).Quality Control of 1-(4-Chlorophenyl)pyrrolidin-2-one.They published the article 《Synthesis and pharmacological evaluation of benzamide derivatives as potent and selective sigma-1 protein ligands》 about this compound( cas:7661-33-8 ) in European Journal of Medicinal Chemistry. Keywords: aminoalkyl benzamide preparation sigma protein cytotoxicity human docking SAR; benzyl methyl propanamine preparation sigma protein safety human SAR; Benzamide; CNS; Sigma protein. We’ll tell you more about this compound (cas:7661-33-8).

A series of novel N-(aminoalkyl)benzamide derivatives such as I [m = 2, 3; R1 = Me; R2 = Bn, (CH2)2C6H4; R1R2 = (CH2)4, (CH2)2O(CH2)2, (CH2)2NMe(CH2)2, etc.; R3 = H, 4-n-Bu, 4-Cl, etc.] and N-benzyl-N-methyl-propan-1-amine derivatives II [X = CH2NH, SO2NH, NHC(O)] was designed, synthesized and pharmacol. evaluated. In vitro competition binding assays against sigma proteins (sigma-1 S1R and sigma-2 S2R) revealed that most of them conferred S2R/S1R selectivity toward without cytotoxic effects on SY5Y cells, especially with compounds I [m = 2, 3; R1 = Me; R2 = Bn]. Some selected compounds were also evaluated for their agonist and antagonist activities on a panel of 40 receptors and results showed the importance of the nature and the position with halogeno atom on the benzamide scaffold, the length chain and also the contribution of the hydrophobic part on the amine group. Among them, compounds I [m = 2, 3; R1 = Me; R2 = Bn; R3 = 4-Cl, 4-CN, 4-NO2] showed excellent affinity for S1R (Ki = 1.2-3.6 nM), selectivity for S2R (Ki up to 1400 nM) and high selectivity index (IC50(SY5Y)/Ki(S1R) ratio from 28/000 to 83/000). Furthermore, these compounds I and II presented an excellent safety profile over 40 other receptors.

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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.Ruostesuo, P.; Hakkinen, A. M.; Karjalainen, J. researched the compound: 1-(4-Chlorophenyl)pyrrolidin-2-one( cas:7661-33-8 ).SDS of cas: 7661-33-8.They published the article 《Carbon-13, nitrogen-15m, and oxygen-17 NMR chemical shifts of substituted 1-phenyl-2-pyrrolidinones》 about this compound( cas:7661-33-8 ) in Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy. Keywords: NMR phenylpyrrolidinone derivative. We’ll tell you more about this compound (cas:7661-33-8).

The C-13 and N-15 NMR chem. shifts and the direct C-proton coupling constants of 1-phenyl-2-pyrrolidinone and its 2′-Me,3′-Me,4′-Me,2′-chloro,3′-chloro,4′-chloro,3′-methoxy,4′-methoxy and 4′-nitro derivatives were measured in di-Me sulfoxidde. The O-17 NMR chem. shifts of some of the compounds were determined in acetone. The effect of substituents on the chem. shifts of carbonyl carbons correlates well with the Hammett substituent parameters and the N chem. shifts seem to follow a similar trend. The variation of the O chem. shift due to the substituents is small. The chem. shifts of aromatic carbons can mainly be derived using the substituent parameters of benzene, some deviation probably due to steric effects is observable, however.

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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 Cyclization of ω-halo amides to lactams. Author is Manhas, Maghar S.; Jeng, Stella J..

N-Aryl-β-bromopropionamides and -γ-bromobutyramides, where the aryl group is Ph or 3 α-cholestanyl, are treated with Na in liquid NH3 to give 1 aryl-2-azetidionones (I) (Ar = Ph, o- and p-BrC6H4, etc.) and 1-aryl-2-pyrrolidinones. Lactams are also prepared from bromo amides and NaH in Me2SO and KOBu-tert in Me2SO.

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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).Electric Literature of C10H10ClNO. 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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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 Efficient ligand-free copper-catalyzed N-arylation of amides with aryl halides in water, published in 2011-03-16, which mentions a compound: 7661-33-8, mainly applied to copper catalyzed arylation cross coupling amide aryl iodide, Recommanded Product: 1-(4-Chlorophenyl)pyrrolidin-2-one.

A convenient and efficient protocol has been developed for the cross-coupling of amides and aryl iodides using a ligand-free copper(I) oxide catalyst in water. A variety of amide derivatives afforded the corresponding N-arylated products in moderate to good yields (up to 88%).

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