Tag: M.W:200-300

Pan, Qijun; Liu, Yongan; Pang, Wan; Wu, Jingjing; Ma, Xiaoyu; Hu, Xiaojun; Guo, Yong; Chen, Qing-Yun; Liu, Chao published an article about the compound: Basic copper carbonate( cas:12069-69-1,SMILESS:O[Cu]OC(O[Cu]O)=O ).Category: catalyst-ligand. 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:12069-69-1) through the article.

This paper reports a convenient copper-catalyzed three-component conversion of arylhydrazine hydrochlorides RNHNH2.HCl (R = 4-bromophenyl, naphthalen-2-yl, quinolin-7-yl, etc.) to arenesulfonyl fluorides RS(O)2F in good yields under mild conditions, using 1,4-diazabicyclo [2.2.2]octane bis(sulfur dioxide) (DABSO) as a sulfonyl source and N-fluorobenzenesulfonimide (NFSI) as a fluorine source based on a radical sulfur dioxide insertion and fluorination strategy. Notably, arylhydrazine hydrochloride is used as a safe precursor of aryl radicals.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Synthetic Route of C11H21BrO2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 11-Bromoundecanoic acid, is researched, Molecular C11H21BrO2, CAS is 2834-05-1, about Facile synthesis of gold nanoparticles capped with an ammonium-based chiral ionic liquid crystal. Author is Mangaiyarkarasi, R.; Sivaranjini, B.; Umadevi, S..

Herein, we describe a facile synthesis of stable chiral ionic liquid crystal (ILC)-capped gold nanoparticles. A new ILC containing a chiral cholesterol moiety having a terminal triethylammonium group was synthesized which exhibited an enantiotropic lamellar mesophase. Stable, monodisperse citrate-stabilized gold nanoparticles having a size of ∼60 nm were prepared and the citrate ligands on the gold nanoparticles were replaced with chiral ILC through a two-phase ligand exchange process. The resulting chiral ILC-stabilized particles were characterised using UV-visible (UV-Vis) and transmission electron microscopy (TEM) studies. Different from the citrate-stabilized nanoparticles, the ligand exchanged gold nanoparticles were dispersible in organic solvent and resulting dispersion was stable for more than observed period of 3 mo. Furthermore, the chiral ILC-decorated gold nanoparticles were found to be well dispersible in a nematic host without any aggregation and induced a vertical alignment of the nematic director.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Electric Literature of C11H21BrO2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 11-Bromoundecanoic acid, is researched, Molecular C11H21BrO2, CAS is 2834-05-1, about Modulating electron transfer in ferrocene-naphthoquinone dyads: New insights in parameters influencing ET efficiency. Author is Sabuzi, Federica; Coletti, Alessia; Pomarico, Giuseppe; Floris, Barbara; Galloni, Pierluca; Conte, Valeria.

Electron transfer (ET) constitutes a key process for several biol. transformations, including solar energy conversion in bacteria and plants. Nowadays, numerous synthetic systems have been proposed to mimic such kind of natural occurring process. In this work, we elucidate the factors that mostly influence the electron transfer process in ferrocene-naphthoquinone dyads. In particular, the connection between the two redox units has been varied, in order to study the ET dependence from: (i) the distance between donor-acceptor units and (ii) the oxidation potential of the donor species. No interaction among the two moieties has been detected at the ground state, while efficient electron transfer process was observed following excitation of the naphthoquinone through UV-light, as well as upon the aid of a Lewis acid promoter in solution Moreover, DFT calculations have been performed to support the exptl. data.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

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 Synthesis, Structure-Activity Relationships, and in Vivo Efficacy of the Novel Potent and Selective Anaplastic Lymphoma Kinase (ALK) Inhibitor 5-Chloro-N2-(2-isopropoxy-5-methyl-4-(piperidin-4-yl)phenyl)-N4-(2-(isopropylsulfonyl)phenyl)pyrimidine-2,4-diamine (LDK378) Currently in Phase 1 and Phase 2 Clinical Trials, published in 2013-07-25, which mentions a compound: 1184917-16-5, Name is 4-Bromo-2,5-dichloropyridine, Molecular C5H2BrCl2N, Computed Properties of C5H2BrCl2N.

The synthesis, preclin. profile, and in vivo efficacy in rat xenograft models of the novel and selective anaplastic lymphoma kinase inhibitor (I; LDK378) are described. In this initial report, preliminary structure-activity relationships (SARs) are described as well as the rational design strategy employed to overcome the development deficiencies of the first generation ALK inhibitor (II; TAE684). Compound I is currently in phase 1 and phase 2 clin. trials with substantial antitumor activity being observed in ALK-pos. cancer patients.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Mamba, Feziwe Bathabile; Ndlovu, Thando; Mbizana, Siyasanga; Khan, Wesaal; Gule, Nonjabulo Prudence published an article about the compound: Basic copper carbonate( cas:12069-69-1,SMILESS:O[Cu]OC(O[Cu]O)=O ).Name: Basic copper carbonate. 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:12069-69-1) through the article.

Appropriate wound care is pivotal in preventing wound and postsurgery infections, which remain a serious clin. problem. In this study, we report the successful fabrication of antimicrobial and biodegradable materials for possible use in the medical field. Amino functionalized polycaprolactone (PCL [Poly(CL-co-ACL)]) was synthesized via ring opening polymerization This polymer was then functionalized via the pendant amine to induce antimicrobial efficacy. This was done through the grafting of poly(lysine) onto the amine as well as the quaternization of the amine using alkyl halides. The chem. structures of the synthesized monomers and polymers were confirmed using NMR (1H NMR and 13C NMR) spectroscopy and attenuated total reflection-Fourier transform IR spectroscopy. The mol. weights of the polymers were determined using gel permeation chromatog. Nanofibre scaffolds were produced from the polymers using the electrospinning technique and these were characterized though SEM. The antimicrobial efficacy of the fabricated materials was tested against the Gram-pos. (Staphylococcus aureus ATCC 25923) and Gram-neg. (Pseudomonas aeruginosa ATCC 27853) bacteria using the disk diffusion and shake flask methods. The polymers demonstrated excellent antimicrobial efficacy. The fibers were exceptionally biodegradable which opens a lot of applications in the biomedical space.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

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 Synthesis of Long-Chain Alkanoyl Benzenes by an Aluminum(III) Chloride-Catalyzed Destannylative Acylation Reaction, published in 2021-07-02, which mentions a compound: 2834-05-1, Name is 11-Bromoundecanoic acid, Molecular C11H21BrO2, Recommanded Product: 2834-05-1.

This paper describeD the facile synthesis of haloaryl compounds with long-chain alkanoyl substituents by the destannylative acylation of haloaryls bearing tri-n-butyltin (Bu3Sn) substituents. The method allowed the synthesis of many important synthons for novel functional materials in a highly efficient manner. The halo-tri-n-butyltin benzenes were obtained by the lithium-halogen exchange of com. available bis-haloarenes and the subsequent reaction with Bu3SnCl. Under typical Friedel-Crafts conditions, i.e., the presence of an acid chloride and AlCl3, the haloaryls were acylated through destannylation. The reactions proceeded fast (<5 min) at low temperatures and thus were compatible with aromatic halogen substituents. Furthermore, the method was applicable to para-, meta- and ortho-substitution and larger systems, as demonstrated for biphenyls. The generated tin byproducts were efficiently removed by trapping with silica/KF filtration and most long-chain haloaryls were obtained chromatog.-free. Mol. structures of several products were determined by X-ray single-crystal diffraction and the crystal packing was investigated by mapping Hirshfeld surfaces onto individual mols. A feasible reaction mechanism for the destannylative acylation reaction was proposed and supported through d. functional theory (DFT) calculations DFT results in combination with NMR-scale control experiments unambiguously demonstrate the importance of the tin substituent as a leaving group, which enables the acylation. This literature about this compound(2834-05-1)Recommanded Product: 2834-05-1has given us a lot of inspiration, and I hope that the research on this compound(11-Bromoundecanoic acid) can be further advanced. Maybe we can get more compounds in a similar way.

Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 11-Bromoundecanoic acid(SMILESS: O=C(O)CCCCCCCCCCBr,cas:2834-05-1) is researched.Safety of 2-(7-Bromo-1H-indol-3-yl)acetic acid. The article 《Lateral fluoro-substitution driven molecular packing difference in a series of pyridinium-based chiral ionic liquid crystals》 in relation to this compound, is published in Liquid Crystals. Let’s take a look at the latest research on this compound (cas:2834-05-1).

A series of pyridinium-based chiral ionic liquid crystals (ILCs) such as I [X = H, F] and the intermediated, non-ionic ones (NILCs) such as II, were designed and synthesized. All ILCs exhibited enantiotropic SmA phases, while all NILCs exhibit enantiotropic cholesteric and SmA phases. In addition, few of NILCs and ILCs exhibited enantiotropic SmC* phases. Due to the Coulombic force, the clearing points of the ILCs were higher than those of the corresponding NILCs. For ILCs, the lateral fluoro-substitution not only decreased the clearing points, but also drives the formation of bilayer mol. packing structures at the smectic phases.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

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 Redox-Responsive Pickering Emulsions Stabilized by Silica Nanoparticles and Ferrocene Surfactants at a Very Low Concentration, published in 2019-10-07, which mentions a compound: 2834-05-1, mainly applied to green pickering emulsion silica nanoparticle ferrocene surfactant stabilized, Recommanded Product: 2834-05-1.

Here, we describe a redox-responsive Pickering emulsion stabilized by silica nanoparticles and a ferrocene surfactant (FcCOC10N) at a concentration as low as 0.01 mM (≈0.005 cmc). The emulsions are stable and resistant to coalescence for more than one month. The ferrocene group in the structure of FcCOC10N can be reversibly switched between its oxidized and reduced forms by redox reactions, which would alter the amphiphilic properties of the surfactant. Consequently, the emulsion can be switched between ′′on′′ (stable) and ′′off′′ (unstable) states through electrochem. reactions without adding addnl. chems. or changing the particle/surfactant concentration Moreover, the Pickering emulsifier composed of the surfactant and the nanoparticles can be recovered and reused after removal of the original oil. It offers a new platform that provides green and sustainable operation for separation and reuse of the emulsifier in potential applications, such as biphasic catalysis and oil transportation. Redox-responsive Pickering emulsions were prepared using silica nanoparticles and a ferrocene surfactant, in which the emulsifier can be recycled and reused without addnl. chems. or expensive equipment.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

Zheng, Chao; Wang, Guang-Zu; Shang, Rui published the article 《Catalyst-free decarboxylation and decarboxylative Giese additions of alkyl carboxylates through photoactivation of electron donor-acceptor complex》. Keywords: alkyl carboxylate preparation green chem; acyloxy phthalimide preparation alkene photochem Giese addition; pyridinium salt preparation alkene photochem Giese addition.They researched the compound: 11-Bromoundecanoic acid( cas:2834-05-1 ).Name: 11-Bromoundecanoic acid. 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:2834-05-1) here.

A catalyst-free method to perform decarboxylative conjugated addition and hydrodecarboxylation of aliphatic N-(acyloxy) phthalimides e.g., I (redox active esters, RAEs) through photoactivation of electron-donor-acceptor (EDA) complex with Hantzsch ester (HE) in N,N-dimethylacetamide (DMA) solution was reported. The reactions present a green method to decarboxylatively construct carbon-carbon bond and to perform hydrodecarboxylation with broad substrate scope and functional group tolerance under mild blue light irradiation condition without recourse of popularly used photo-redox catalysts.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI

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.Kawamoto, Naoki; Hu, Yongxing; Kuwahara, Yutaka; Ihara, Hirotaka; Takafuji, Makoto researched the compound: 11-Bromoundecanoic acid( cas:2834-05-1 ).Product Details of 2834-05-1.They published the article 《A molecular shape recognitive HPLC stationary phase based on a highly ordered amphiphilic glutamide molecular gel》 about this compound( cas:2834-05-1 ) in Nanomaterials. Keywords: amphiphilic glutamide mol gel shape HPLC stationary phase; high performance liquid chromatography (HPLC); highly-oriented structure; molecular gels; phenolic compounds; stereo isomers; steroids. We’ll tell you more about this compound (cas:2834-05-1).

Chiral glutamide-derived lipids form self-assembled fibrous mol. gels that can be used as HPLC organic phases. In this study, HPLC separation efficiency was improved through the addition of branched amphiphilic glutamide lipids to the side chains of a terminally immobilized flexible polymer backbone. Poly(4-vinylpyridine) with a trimethoxysilyl group at one end was grafted onto the surface of porous silica particles (Sil-VP15, polymerization degree = 15), and the pyridyl side chains were quaternized with a glutamide lipid having a bromide group (BrG). Elemental anal. indicated that the total amount of the organic phase of the prepared stationary phase (Sil-VPG155) was 38.0 wt%, and the quaternization degree of the pyridyl groups was determined to be 32.5%. Differential scanning calorimetric anal. of a methanol suspension of Sil-VPG15 indicated that the G moieties formed a highly ordered structure below the phase transition temperature even on the silica surface, and the ordered G moieties exhibited a gel-to-liquid crystalline phase transition. Compared with a com. available octadecylated silica column, the Sil-VPG15 stationary phase showed high selectivity toward polycyclic aromatic hydrocarbons, and particularly excellent separations were obtained for geometrical and positional isomers. Sil-VPG15 also showed highly selective separation for phenol derivatives, and bio-related mols. containing phenolic groups such as steroids were successfully separated These separation abilities are probably due to multiple interactions between the elutes and the highly ordered functional groups, such as the pyridinium and amide groups, on the highly ordered mol. gel having self-assembling G moieties.

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Reference:
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI