Tag: M.W:100-200

Zhang, Yinjun; Chen, Jialin; Chen, Changsheng; Wu, Shijin published an article about the compound: Ethyl indoline-2-carboxylate( cas:50501-07-0,SMILESS:O=C(C1NC2=C(C=CC=C2)C1)OCC ).COA of Formula: C11H13NO2. 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:50501-07-0) through the article.

The strain screened from sludge can selectively hydrolyze (S)-Et indoline-2-carboxylate to produce (S)-indoline-2-carboxylic acid. It was identified as the Bacillus aryabhattai strain based on its morphol., metabolism, and 16S rDNA sequence anal. Glucose and yeast powder were used as the best carbon and nitrogen sources to cultured cells with an initial pH of seven. Subsequently, we optimized the key parameters for selective hydrolysis. Finally, when the substrate concentration had reached 3%, with a 35°C water bath, a pH of seven, and a speed of 600 rpm, the e.e.p value attained 96% with a 33% yield. Thus, we had developed a new method for producing (S)-indoline-2-carboxylic acid that used whole microbial cells as the biocatalyst.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Application of 16400-32-1. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 1-Bromo-2-pentyne, is researched, Molecular C5H7Br, CAS is 16400-32-1, about Cu(I)- and Au(I)-catalyzed regioselective oxidation of diynes: divergent synthesis of N-heterocycles. Author is Shen, Wen-Bo; Zhang, Ting-Ting; Zhang, Meng; Wu, Jing-Jing; Jiang, Xiao-Lei; Ru, Guang-Xin; Gao, Guang-Qin; Zhu, Xiu-Hong.

Catalyst-dependent oxidative cyclization of diynes 2-NH(C(O)R4)-4-R3C6H3CCCH2N(R2)CC(R1) [R1 = Ph, 2-phenylethenyl, thiophen-3-yl, etc.; R2 = Ts, Bs, Ms, benzenesulfonyl; R3 = H, Me, Cl, Br; R4 =Me, Ac, Bz, 4-fluorophenyl, etc.]/(R2)N(CH2CCR5)CCAr [R5 = Me, Et, pentyl, 3-phenylpropyl; Ar = Ph, 4-(trifluoromethyl)phenyl, 3,5-dichlorophenyl, etc.] with 3,5-dichloropyridine N-oxide is achieved using an amide directing group. Non-polarized and aminated alkyne could be selectively activated by copper and gold, thus leading to divergent synthesis of a range of pyrroles I and dihydroindeno[1,2-c]pyrrol-3(2H)-ones II (R6 = H, Cl, Me; R7 = H, Me, F, CF3, etc.; R8 = H, Cl, Me, etc.). It should be noted that this difference might be attributed to the multicoordinated Cu center and the linearly aligned dicoordinated Au center.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 1-Bromo-2-pentyne(SMILESS: CCC#CCBr,cas:16400-32-1) is researched.Electric Literature of C5H8Br4. The article 《Diastereoselective synthesis of hexahydropyrrolo[2,1-a]isoquinolines by [3+2] cycloaddition and cyclative Heck alkyne hydroarylation》 in relation to this compound, is published in Tetrahedron Letters. Let’s take a look at the latest research on this compound (cas:16400-32-1).

Intermediates generated from three-component [3+2] cycloaddition of 2-bromo arylaldehydes such as 2-bromobenzaldehyde, 2-bromo-5-(trifluoromethyl)benzaldehyde, 2-bromonaphthalene-1-carbaldehyde, etc. and maleimides I (R = Me, Et, t-Bu, benzyl) with amino esters (Et 2-aminopropanoate hydrochloride) or amino acids (2-amino-2-methylpropanoic acid) underwent N-propargylation and reductive Heck cyclization to form pyrrolidinedione-fused hexahydropyrrolo[2,1-a]isoquinolines e.g., II.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

COA of Formula: C6H13NO2. 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: (S)-(2,2-dimethyl-[1,3]-dioxolan-4-yl)-methylamine, is researched, Molecular C6H13NO2, CAS is 82954-65-2, about Synthesis of phosphonoglycine backbone units for the development of phosphono peptide nucleic acids. Author is Doboszewski, Bogdan; Groaz, Elisabetta; Herdewijn, Piet.

A series of phosphono-modified backbone mimics based on achiral and chiral N-(dihydroxypropyl)glycine units were obtained by sequential addition of phosphonate and nucleobase moieties to suitably protected dihydroxypropylamines. Simple synthetic strategies enabled the preparation of various target derivatives that will be useful as building blocks for the preparation of new synthetic polymers containing a phosphonate internucleotide linkage in place of the standard phosphodiester bond.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Application In Synthesis of 2-Bromo-5-methylpyrazine. 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: 2-Bromo-5-methylpyrazine, is researched, Molecular C5H5BrN2, CAS is 98006-90-7, about Construction of 1-Heteroaryl-3-azabicyclo[3.1.0]hexanes by sp3-sp2 Suzuki-Miyaura and Chan-Evans-Lam Coupling Reactions of Tertiary Trifluoroborates. Author is Harris, Michael R.; Li, Qifang; Lian, Yajing; Xiao, Jun; Londregan, Allyn T..

Compounds that contain the 1-heteroaryl-3-azabicyclo[3.1.0]hexane architecture are of particular interest to the pharmaceutical industry yet remain a challenge to synthesize. We report herein an expedient and modular approach to the synthesis of 1-heteroaryl-3-azabicyclo[3.1.0]hexanes by Suzuki-Miyaura and Chan-Evans-Lam coupling reactions of tertiary trifluoroborate salts. Our Suzuki-Miyaura cross-coupling protocol is compatible with a broad range of aryl and heteroaryl bromides and chlorides. The unprecedented Chan-Evans-Lam coupling of tertiary trifluoroborates allows the facile construction of 1-heteroaryl-3-azabicyclo[3.1.0]hexanes containing C-tertiary arylamines at the ring juncture.

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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

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 called Palladium-catalyzed desymmetric [2+2+2] cycloaddition of 1,6-enyne and alkyne, Author is Zhao, Wei-Cheng; Wang, Xin; Feng, Juhua; Tian, Ping; He, Zhi-Tao, which mentions a compound: 16400-32-1, SMILESS is CCC#CCBr, Molecular C5H7Br, Safety of 1-Bromo-2-pentyne.

A novel and straightforward palladium-catalyzed desym. [2+2+2] cycloaddition reaction of alkyne-tethered cyclohexadienone and internal alkyne is established. Widely existing fused tricyclic hydronaphthofuran and hydronaphthopyrrole frameworks are prepared diastereoselectively in moderate to excellent yields. One-step aromatization process provides a new and facile access to important benzene-containing tricycles from above cycloaddition products.

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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

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: 50501-07-0, is researched, SMILESS is O=C(C1NC2=C(C=CC=C2)C1)OCC, Molecular C11H13NO2Journal, Article, Research Support, Non-U.S. Gov’t, European Journal of Medicinal Chemistry called Cardioselective anti-ischemic ATP-sensitive potassium channel (KATP) openers: benzopyranyl indoline and indole analogues, Author is Lee, Sunkyung; Yi, Kyu Yang; Kim, Soo-Kyung; Suh, Jeehee; Kim, Nak Jeong; Yoo, Sung-Eun; Lee, Byung Ho; Seo, Ho Won; Kim, Sun-Ok; Lim, Hong, the main research direction is benzopyranyl indoline indole analog preparation cardioprotective activity; antiischemic ATP sensitive potassium channel opener benzopyranyl indoline; structure activity relationship benzopyranyl indoline indole analog; conformation benzopyranyl indoline indole analog crystal structure.Recommanded Product: 50501-07-0.

This paper describes the design, syntheses, and biol. evaluations of novel ATP-sensitive potassium channel (KATP) openers, benzopyranyl indoline and indole derivatives Among those, two enantiomers of indoline-2-carboxylic Et esters (14, 18) showed the best cardioprotective activities both in vitro and in vivo, while their vasorelaxation potencies were very low (concentration for 50% inhibition of vasorelaxation >30 μM). The cardioprotective effect of 14 was completely reversed by 5-hydroxydecanoate, a selective mitochondrial KATP blocker, indicating its provable protective mechanism through the mitochondrial KATP opening. In addition, we performed conformational analyses using 2D-NMR, X-ray crystallog. and mol. modeling to study the structure-activity relationships in this series of compounds

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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Recommanded Product: 1-Bromo-2-pentyne. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 1-Bromo-2-pentyne, is researched, Molecular C5H7Br, CAS is 16400-32-1, about Ni-Catalyzed Cyclization of Enynes and Alkynylboronates: Atom-Economical Synthesis of Boryl-1,4-dienes. Author is Cabrera-Lobera, Natalia; Quiros, M. Teresa; Bunuel, Elena; Cardenas, Diego J..

We report a novel atom-economical Ni-catalyzed cyclization reaction of enynes with alkynylboronates. The reaction employs a non-expensive Ni salt, a phosphine-based ligand and easy-handling alkynylboronates as boron-carbon source. The reaction provides complex fused-bicyclic compounds containing borylated 1,4-cyclohexadienes in high yields in short reaction times, involving the formation of two C-C bonds in one step. A reasonable reaction mechanism is proposed based on mechanistic exptl. results.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Ethyl indoline-2-carboxylate, is researched, Molecular C11H13NO2, CAS is 50501-07-0, about A Reusable Cobalt Catalyst for Reversible Acceptorless Dehydrogenation and Hydrogenation of N-Heterocycles, the main research direction is cobalt complex preparation surface structure; azaarene cobalt complex catalyst dehydrogenation; nitrogen heterocycle compound cobalt complex catalyst hydrogenation.Quality Control of Ethyl indoline-2-carboxylate.

A highly efficient reusable cobalt-based heterogeneous catalyst for reversible dehydrogenation and hydrogenation of N-heterocycles was repoted. Both the acceptorless dehydrogenation (ADH) and the hydrogenation processes operated under mild and benign conditions.

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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Ethyl indoline-2-carboxylate(SMILESS: O=C(C1NC2=C(C=CC=C2)C1)OCC,cas:50501-07-0) is researched.Formula: C15H11NO. The article 《Study on the synthesis of S-(-)-2-Carboxyindoline》 in relation to this compound, is published in Gaoxiao Huaxue Gongcheng Xuebao. Let’s take a look at the latest research on this compound (cas:50501-07-0).

A general synthetic route of S-(-)-2-carboxyindoline was proposed which started from o-nitrotoluene and di-Et oxalate, via condensation, nitro-group reduction, heterocyclic reduction and hydrolysis, 2-carboxyindoline was achieved with total yield of 40.6%. Especially, using 10% Pd-C as catalysts, the heterocycle is reduced easily with hydrogen at 160° and 6.2 MPa, the catalysts also can be reclaimed. Through steps of chlorination, esterification, fractional crystallization, and hydrolysis, the S-(-)-2-carboxyindoline was resolved with L-carnitine oxalate as the chiral resolution reagent. The titled product can be achieved with 32% yield and [α20589 = -27.5] (c = 1.0, DMSO).

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Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics