Category: oxazolidine

Kim, Tae Y.; Koo, Kwon M.; Yun, Gayeong; Kim, Yangsoo published the article 《Chemiresistor sensor using elastomer-functionalized carbon nanotube nanocomposites for the detection of gasoline spills》. Keywords: electrode sensor natural rubber carbon nanotube polyisoprene.They researched the compound: Cupric bromide( cas:7789-45-9 ).Recommanded Product: Cupric bromide. 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:7789-45-9) here.

Two types of multi-walled carbon nanotube (MWNT)-based elastomer nanocomposites are used as a sensor material for the detection of gasoline spills by applying the interdigitated electrode (IDE) device. MWNT-g-polyisoprene (PI) and Si-MWNT/natural rubber (NR) are prepared by applying “”grafting-from”” and “”grafting-to”” process, resp. When compared based on the identical condition of gasoline sensing test, the maximum response value to the exposure of gasoline is 17.5 for MWNT-g-PI sensor and 12.9 for Si-MWNT/NR sensor, which reach the maximum in less than 3 min. The MWNT-g-PI sensor selectively detects gasoline, and its response is completely reversible. It shows that the longer chain length of PI brings about the larger response of MWNT-g-PI sensor to gasoline. The sensitivity of MWNT-g-PI sensor highly depends on both how much gasoline is exposed to the sensor and what bias voltage is applied to the IDE device. The IDE sensor using MWNT-g-PI nanocomposites effectively detects gasoline spills.

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Jacobsen, Jennifer A.; Fullagar, Jessica L.; Miller, Melissa T.; Cohen, Seth M. published an article about the compound: 6-Hydroxy-2-methylpyrimidin-4(3H)-one( cas:1194-22-5,SMILESS:CC1=NC(=CC(N1)=O)O ).Safety of 6-Hydroxy-2-methylpyrimidin-4(3H)-one. 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:1194-22-5) through the article.

Fragment-based lead design (FBLD) has been used to identify new metal-binding groups for metalloenzyme inhibitors. When screened at 1 mM, a chelator fragment library (CFL-1.1) of 96 compounds produced hit rates ranging from 29% to 43% for five matrix metalloproteases (MMPs), 24% for anthrax lethal factor (LF), 49% for 5-lipoxygenase (5-LO), and 60% for tyrosinase (TY). The ligand efficiencies (LE) of the fragment hits are excellent, in the range of 0.4-0.8 kcal/mol. The MMP enzymes all generally elicit the same chelators as hits from CFL-1.1; however, the chelator fragments that inhibit structurally unrelated metalloenzymes (LF, 5-LO, TY) vary considerably. To develop more advanced hits, one hit from CFL-1.1, 8-hydroxyquinoline, was elaborated at four different positions around the ring system to generate new fragments. 8-Hydroxyquinoline fragments substituted at either the 5- or 7-positions gave potent hits against MMP-2, with IC50 values in the low micromolar range. The 8-hydroxyquinoline represents a promising new chelator scaffold for the development of MMP inhibitors that was discovered by use of a metalloprotein-focused chelator fragment library.

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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.Kamata, Ryo; Nakajima, Daisuke; Shiraishi, Fujio researched the compound: 1-(4-(4-Hydroxyphenyl)piperazin-1-yl)ethanone( cas:67914-60-7 ).Related Products of 67914-60-7.They published the article 《Agonistic effects of diverse xenobiotics on the constitutive androstane receptor as detected in a recombinant yeast-cell assay》 about this compound( cas:67914-60-7 ) in Toxicology In Vitro. Keywords: xenobiotic constitutive androstane receptor; Alkyl phenol; Bisphenol; Constitutive androstane receptor; Organochlorine; Recombinant yeast; Styrene dimer. We’ll tell you more about this compound (cas:67914-60-7).

The constitutive androstane receptor (CAR) is a nuclear receptor and transcription factor regulating proteins involved in xenobiotic metabolism Agonist activation of the CAR can trigger metabolic activation and toxification as well as detoxification and clearance; accordingly, xenobiotic substances acting as CAR ligands may pose a threat to human and animal health. The authors used yeast cells transduced with the human CAR and the response pathway to measure the CAR-agonistic activities of 549 synthetic or natural compounds: 216 of the tested compounds exhibited CAR-agonistic effects. Eighty-four percent of CAR-activating compounds were aromatic compounds, and >65% of these active compounds were aromatic hydrocarbons, bisphenols, monoalkyl phenols, phthalates, styrene dimers, di-Ph ethers, organochlorines, and organophosphates. The ten most potent compounds were 4-tert-octylphenol (4tOP; reference substance), 4-nonylphenol, diethylstilbestrol, benzyl Bu phthalate, 2-(4-hydroxyphenyl)-2,4,4-trimethylchroman, o,p’-DDT, methoxychlor, di-Pr phthalate, hexestrol, and octachlorostyrene. The activities of these nine non-reference compounds exceeded 10% of the 4tOP activity. Anal. of para-monoalkyl phenols suggests that branching of the alkyl group and chlorination at the ortho position raises potency. This study provides critical information for identifying the potential of CAR-mediated toxic hazards and for understanding the relevant mechanism.

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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 Crystal structure and semiconductor properties of copper(II) complex incorporating chiral (R)-(+)-α-Ethylbenzylammonium cations:[(R)-C9H14N]3[CuBr4].Br., published in 2022-01-31, which mentions a compound: 7789-45-9, Name is Cupric bromide, Molecular Br2Cu, Safety of Cupric bromide.

The mol. organic-inorganic hybrid halometallate [(R)-C9H14N]3[CuBr4].Br was synthesized by a slow evaporation method. The single-crystal x-ray diffraction experiment evidences that [(R)-C9H14N]3[CuBr4].Br crystallizes in the monoclinic system with the noncentrosym. space group P21 at T = 150K. The compound displays a zero-dimensional (0D) structure which consists in 3 chiral [(R)-C9H14N]+ cations, 1 anionic [CuBr4]2-, and free Br- ion. The Cu(II) has an intermediate geometry between regular tetrahedron (Td) and square planar (D4h). In the crystal structure, the cations and anions are arranged in alternating stacks which are interconnected via H bonding contacts N-H···Br. This hybrid compound presents good thermal stability up to 370 K. The DSC and elec. measurements show that no phase transition occurs in the compound over the temperature range 223-423 K. Optical absorption measurements suggest that [(R)-C9H14N]3[CuBr4].Br has a narrow direct optical band gap (Eg) of ∼2.15 eV which makes it a promising material in optoelectronic devices.

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Oxazolidine – Wikipedia,
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Quality Control of Oxazole. 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: Oxazole, is researched, Molecular C3H3NO, CAS is 288-42-6, about Ag-Cu copromoted direct C2-H bond thiolation of azoles with Bunte salts as sulfur sources.

A direct C2-H thiolation of azoles with Bunte salts was achieved under the combined action of copper and silver salts. This protocol could furnish various substituted 2-arylthio- or 2-alkylthio-substituted azoles in moderate to good yields. This method has a broad substrate scope and shows good functional group tolerance.

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Oxazolidine – Wikipedia,
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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, Synthesis called Nickel-Catalyzed Hydrodeoxygenation of Aryl Sulfamates with Alcohols as Mild Reducing Agents, Author is Mastuo, Kasumi; Kuriyama, Masami; Yamamoto, Kosuke; Demizu, Yosuke; Nishida, Koyo; Onomura, Osamu, which mentions a compound: 67914-60-7, SMILESS is CC(N1CCN(C2=CC=C(O)C=C2)CC1)=O, Molecular C12H16N2O2, Reference of 1-(4-(4-Hydroxyphenyl)piperazin-1-yl)ethanone.

The nickel-catalyzed hydrodeoxygenation of aryl sulfamates ROS(O)2R1 [R = 2-propanoylbenzen-1-yl, 1-ethyl-1H-indol-4-yl, 4-(4-acetylpiperazin-1-yl)benzen-1-yl, etc.; R1 = dimethylaminyl, piperidin-1-yl, bis(propan-2-yl)aminyl, etc.] has been developed with alcs. as mild reductants. A variety of functional groups and heterocycles were tolerated in this reaction system to give the desired products RH in high yields. In addition, the gram-scale process and stepwise cine-substitution were also achieved with high efficiency.

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Oxazolidine | C3H7NO – PubChem

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 9-Sulfonyl-9(H)-Purine Derivatives Inhibit HCV Replication Via their Degradation Species, published in 2021-04-30, which mentions a compound: 5451-40-1, mainly applied to sulfonylpurine degradation species hepatitis C virus inhibitor, Application In Synthesis of 2,6-Dichloropurine.

Cell-based screening of a privileged small mol. library led to the discovery of 9-sulfonyl-9(H)-purine as new scaffold for hepatitis C virus (HCV) inhibitors. Structure-activity relationship study with respect to the 2-, 6- and 9-positions in the purine core resulted in the identification of several active compounds with moderate potency against the HCV genotype 1b. Subsequent stability studies demonstrated that HCV inhibitors of this type were unstable in Dulbecco’s modified eagle medium (DMEM) and plasma, as well as glutathione-containing water, and their instability was closely related to their HCV inhibitory activity. A preliminary study of the mechanism of action showed that the sulfonamide bond at the 9-position of purine would be the primary degradation site and the resulting sulfonylation degradation species would mediate the anti-HCV activity of 9-sulfonyl-9(H)-purines. Results of this study demonstrated that 9-sulfonyl-9(H)-purine is an unstable scaffold for HCV inhibitors and further detailed anal. of the degradation species is needed to determine the main active components and direct target for this type of mols.

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Recommanded Product: Pyridin-3-ylboronic acid hydrochloride. 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: Pyridin-3-ylboronic acid hydrochloride, is researched, Molecular C5H7BClNO2, CAS is 265664-63-9, about Relative kinetic reactivity of boronic acid and boronate ion towards Tiron, 2,2′-biphenol, and propylene glycol. Author is Watanabe, Eisuke; Miyamoto, Chiaki; Tanaka, Asumi; Iizuka, Kenzo; Iwatsuki, Satoshi; Inamo, Masahiko; Takagi, Hideo D.; Ishihara, Koji.

Reaction systems of boronic acid (RB(OH2), R = Ph or 3-fluorophenyl) with diols and no proton ambiguity were elaborately set up, and kinetic measurements were conducted to elucidate the relative reactivities of RB(OH)2 and RB(OH)3-. In the reactions of phenylboronic and 3-fluorophenylboronic acids with propylene glycol, the reactivity order was: RB(OH)2 >> RB(OH)3-, whereas in the reactions of 3-pyridylboronic acid with Tiron and 2,2′-biphenol, the reactivity of RB(OH)2 was comparable to that of RB(OH)3-. These results are in contrast to those that have been previously reported, and widely accepted for over thirty years, that concluded that the reactivity of RB(OH)3- is several orders of magnitude higher than that of RB(OH)2. The reactivity of Tiron with 3-pyridylboronic acid is affected by the protonation of one of its sulfonate groups.

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Reference of 1-(4-(4-Hydroxyphenyl)piperazin-1-yl)ethanone. 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-(4-Hydroxyphenyl)piperazin-1-yl)ethanone, is researched, Molecular C12H16N2O2, CAS is 67914-60-7, about Simple one-pot aqueous synthesis of AuPd alloy nanocrystals/reduced graphene oxide as highly efficient and stable electrocatalyst for oxygen reduction and hydrogen evolution reactions. Author is Lin, Xiao-Xiao; Zhang, Xiao-Fang; Wang, Ai-Jun; Fang, Ke-Ming; Yuan, Junhua; Feng, Jiu-Ju.

Herein, the authors develop a simple 1-pot aqueous method to prepare AuPd alloy nanocrystals on reduced graphene oxide (AuPd NCs/rGO), by using 1-acetyl-4-(p-hydroxyphenyl) piperazine (AHPP) as the reductant, stabilizing agent and structure-director, without any other additives (e.g., seed, surfactant or polymer). The product is mainly characterized by TEM, XPS, x-ray diffraction and TGA. The obtained AuPd NCs/rGO displays enlarged electrochem. active surface area and superior catalytic performances toward O reduction reaction (ORR) and H evolution reaction (HER) relative to Pt/C, Pd/C, Pd/rGO and Au/rGO catalysts, showing promising applications in energy storage and conversion.

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Oxazolidine | C3H7NO – PubChem

Li, Mian; Li, Xinliang; Qin, Guifang; Luo, Kan; Lu, Jun; Li, Youbing; Liang, Guojin; Huang, Zhaodong; Zhou, Jie; Hultman, Lars; Eklund, Per; Persson, Per O. A.; Du, Shiyu; Chai, Zhifang; Zhi, Chunyi; Huang, Qing published the article 《Halogenated Ti3C2 MXenes with Electrochemically Active Terminals for High-Performance Zinc Ion Batteries》. Keywords: halogenated titanium carbide mxene zinc ion battery; MXene; electrochemical property; halogen; terminal; zinc ion batteries.They researched the compound: Cupric bromide( cas:7789-45-9 ).Related Products of 7789-45-9. 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:7789-45-9) here.

The class of two-dimensional metal carbides and nitrides known as MXenes offer a distinct manner of property tailoring for a wide range of applications. The ability to tune the surface chem. for expanding the property space of MXenes is thus an important topic, although exptl. exploration of surface terminals remains a challenge. Here, we synthesized Ti3C2 MXene with unitary, binary, and ternary halogen terminals, e.g., -Cl, -Br, -I, -BrI, and -ClBrI, to investigate the effect of surface chem. on the properties of MXenes. The electrochem. activity of Br and I elements results in the extraordinary electrochem. performance of the MXenes as cathodes for aqueous zinc ion batteries. The -Br- and -I-containing MXenes, e.g., Ti3C2Br2 and Ti3C2I2, exhibit distinct discharge platforms with considerable capacities of 97.6 and 135 mAh·g-1. Ti3C2(BrI) and Ti3C2(ClBrI) exhibit dual discharge platforms with capacities of 117.2 and 106.7 mAh·g-1. In contrast, the previously discovered MXenes Ti3C2Cl2 and Ti3C2(OF) exhibit no discharge platforms and only ~50% of capacities and energy densities of Ti3C2Br2. These results emphasize the effectiveness of the Lewis-acidic-melt etching route for tuning the surface chem. of MXenes and also show promise for expanding the MXene family toward various applications.

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Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem