Tag: M.W:100-200

As the most studied and widely used chiral ligands, C7H5ClO have been rapidly developed in recent decades due to their simple synthesis, easy modification, and the ability to achieve excellent results in multiple reactions. Formula: https://www.ambeed.com/products/104-88-1.html.

A facile transformation of 1-formyl beta-carboline into fluorescent beta-carboline C-1 tethered benzazole derivatives is described under the catalysis of ZnO nanoparticles. The reaction proceeded with the reaction of 1-formyl beta-carboline and substituted o-diaminobenzene/2-aminobenzenethiol/2-aminophenol, which results in formation of a Schiff base, followed by an intramolecular cylization reaction to generate beta-carboline linked benzimidazole, benzothiazole and benzoxazole derivatives. This appraoch displayed a wide substrate scope and high regioselectivity to yield the desired products in moderate to good yields. The photophysical properties of the synthesized derivatives were also evaluated and they exhibited excellent fluorescence properties. Among these beta-carboline substituted azoles, the benzothiazole derivative displayed the maximum quantum yield (phi(F) up to 28%).

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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

A couple of challenges comes to mind: improving temperature dependence of relative stabilities of polymorphs would help in identifying enantiotropic relationships. 76-37-9, Name is 2,2,3,3-Tetrafluoropropan-1-ol, molecular formula is C3H4F4O, belongs to benzoxazole compound. In a document, author is Huang, Jun, Computed Properties of https://www.ambeed.com/products/76-37-9.html.

Both the inhibition of inflammatory flares and the treatment of hyperuricemia itself are included in the management of gout. Extending our efforts to development of gout therapy, two series of benzoxazole deoxybenzoin oxime derivatives as inhibitors of innate immune sensors and xanthine oxidase (XOD) were discovered in improving hyperuricemia and acute gouty arthritis. In vitro studies revealed that most compounds not only suppressed XOD activity, but blocked activations of NOD-like receptor (NLRP3) inflammasome and Toll-like receptor 4 (TLR4) signaling pathway. More importantly, (E)-1-(6-methoxybenzo[d]oxazol-2-yl)-2-(4-methoxyphenyl)ethanone oxime (5d) exhibited anti-hyperuricemic and antiacute gouty arthritis activities through regulating XOD, NLRP3 and TLR4. Compound 5d may serve as a tool compound for further design of anti-gout drugs targeting both innate immune sensors and XOD. (c) 2018 Elsevier Ltd. All rights reserved.

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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

In chemical reaction engineering, simulations are useful for investigating and optimizing a particular reaction process or system. In this document, Oxidation of sulfides including DBT using a new vanadyl complex of a non-innocent o-aminophenol benzoxazole based ligand. Reference of 590-67-0.

The synthesis of a series of 2-arylbenzoxazole compounds possessing a cytotoxic activity as potential anticancer agents was achieved. Oxidative coupling of benzaldehyde with o-aminophenol utilizing lead tetraacelate approach was used to realize the synthesis of compounds 1-11. The cytotoxicity of 1-11 was screened against breast cancer cell line MCF-7 and human colon cancer cell line HCT-116 utilizing doxorubicin as a reference drug. Among these compounds, 2-(3-benzyloxyphenyl)benzoxazole-5-acetic acid (5) and 2-(4-methoxyphenyl)benzoxazol-5-acetic acid (10), were found to be promising cytotoxic compounds against the MCF-7 cell line. In addition, this study showed that the presence of an acetic acid group at position 5 of the benzoxazole nucleus enhances the activity. Moreover, we noticed that the presence of an oxygen atom directly linked to the phenyl substituent improves activity as well. These results offer a new benzoxazole based template to design and develop novel antineoplastic agents.

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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

Chemistry built the modern world, from the materials that make up the everyday objects around us, the batteries in our devices and cleaning products that help to maintain sanitation. 363-72-4, Name is Pentafluorobenzene, molecular formula is C6HF5, belongs to benzoxazole compound. In a document, author is Gan, Feng, Recommanded Product: Pentafluorobenzene.

Simultaneously achieving excellent mechanical properties and superior gas separation performance remains a great challenge for thermally rearranged polymers when applied as the membrane materials in large scale gas separation applications. Herein, different heteroaromatic non-TR-able codiamines containing benzimidazole/benzoxazole structures were incorporated into ortho-hydroxyl functionalized polyimide backbones, which were subsequently transformed into the poly(benzoxazole-co-polyimide) copolymers by thermal rearrangement (TR). In all cases, the solid-state TR reaction induces the increased preferential intersegmental distances (d-spacing) and fractional free volumes of polymer chains, favorable for the gas permeation. While, the pi-pi stacking distance exhibits opposite variation tendencies for benzimidazole-based and benzoxazole-based TR-PBOI membranes, which is demonstrated to make a significant effect on the gas selectivity. These TR-PBOI membranes thermally treated at 420 degrees C for 1 h exhibit higher tensile properties in relative to most of previously reported TR-PBOI membranes with the tensile strength of 97-118 MPa and initial modulus of 2.0-2.4 GPa. Moreover, incorporating heteroaromatic non-TR-able codiamines endows the resultant TR-PBOI membranes with excellent gas separation properties for the CO2/CH4 gas pairs with the CO2 permeability and CO2/CH4 ideal selectivity values exceeding the 1991 upper bound and close to 2008 upper bound. We anticipate this facile method will facilitate the large-scale preparation and application of TR membranes for gas separation.

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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

Modeling chemical reactions helps engineers virtually understand the chemistry, optimal size and design of the system, and how it interacts with other physics that may come into play. HPLC of Formula: https://www.ambeed.com/products/409071-16-5.html, Name is Lithium difluoro(oxalato)borate, molecular formula is C2BF2LiO4, molecular weight is 143.7678, category is benzoxazole. Now introduce a scientific discovery about this category.

Adenylate-forming enzymes (AFEs) are a mechanistic superfamily of proteins that are involved in many cellular roles. In the biosynthesis of benzoxazole antibiotics, an AFE has been reported to play a key role in the condensation of cyclic molecules. In the biosynthetic gene cluster for the benzoxazole AJI9561, AjiA1 catalyzes the condensation of two 3-hydroxyanthranilic acid (3-HAA) molecules using ATP as a co-substrate. Here, the enzymatic activity of AjiA1 is reported together with a structural analysis of its apo form. The structure of AjiA1 was solved at 2.0 angstrom resolution and shows a conserved fold with other AFE family members. AjiA1 exhibits activity in the presence of 3-HAA (K-m = 77.86 +/- 28.36, k(cat) = 0.04 +/- 0.004) and also with the alternative substrate 3-hydroxybenzoic acid (3-HBA; K-m = 22.12 +/- 31.35, k(cat) = 0.08 +/- 0.005). The structure of AjiA1 in the apo form also reveals crucial conformational changes that occur during the catalytic cycle of this enzyme which have not been described for any other AFE member. Consequently, the results shown here provide insights into this protein family and a new subgroup is proposed for enzymes that are involved in benzoxazole-ring formation.

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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

New discoveries in chemical research and development in 2021. The appropriate choice of redox mediator can avoid electrode passivation and overpotential, which strongly inhibit the efficient activation of substrates in electrolysis.129-64-6, Name is (3aR,4S,7R,7aS)-rel-3a,4,7,7a-Tetrahydro-4,7-methanoisobenzofuran-1,3-dione, molecular formula is C9H8O3. In an article, author is Benzai, A.,once mentioned of 129-64-6, Category: benzoxazole.

Three functional, N-donorbidentates ligands, L1: 2-(pyridin-2-yl) benzoxazole L2: 2-(quinolin-2-yl) benzoxazole and L3: 2-(4-(trifluoromethyl) pyridin-2-yl) benzoxazole have been examined for their catalytic oxidative activities. The dioxygen complexes of Cu(II) were generated in situ by stirring copper salts and bidentates ligands derivated from benzoxazole. It has been found that these compounds are very efficient to give oquinone. The nature of the ligands, the counter anion copper (II) salts and solvent have been investigated. These three parameters have an important effect on the oxidation reaction rate.

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Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

Research speed reading in 2021. Chemistry is a science major with cience and engineering. The main research directions are chemical synthesis, new energy materials, preparation and modification of special coatings. 367-11-3, Name is 1,2-Difluorobenzene, molecular formula is C6H4F2, belongs to benzoxazole compound. In a document, author is Jin, Xilang, Recommanded Product: 1,2-Difluorobenzene.

Specifically, visually, and quantitatively monitor copper ion (Cu2+) is critical in the area of biological and environmental detection. Herein, a ratiometric fluorescent probe with benzoxazole appended xanthenes skeleton was constructed and further employed to monitor Cu2+ in Hela cells, real water samples, and test strips. An easily distinguishable colorimetric (colorless to red) and fluorescence (green to red) change could be observed by naked eye under the portable UV lamp (365 nm) and the changes could be recovered by adding S-2. Furthermore, electrospinning technique was employed to fabricate a probe composited fluorescent sensing film (PMMA) for realizing the visual and recyclable monitoring of Cu2+, indicating that the probe-composited fluorescent sensing film has great potential for on-site and naked-eye detection of Cu2+ in practical. (C) 2020 Elsevier B.V. All rights reserved.

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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

New research progress on 319-03-9 in 2021.Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction by binding to a specific portion of an enzyme and thus slowing or preventing a reaction from occurring. 319-03-9, Name is 5-Fluoroisobenzofuran-1,3-dione, molecular formula is C8H3FO3, belongs to benzoxazole compound. In a document, author is Bhat, Rahul, Quality Control of 5-Fluoroisobenzofuran-1,3-dione.

The expeditious synthesis of 2-aryl-benzothia/(oxa) zoles was carried out by the condensation of 2-aminothiophenol/2-aminophenol and diverse aryl aldehydes in presence of Acacia concinna as a biocatalyst under microwave irradiation. The catalytic process is associated with excellent yields, greener reaction conditions and the environmentally friendly microwave technique which are the striking features of the present protocol.

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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

Welcome to the Chemical Union of benzoxazole, to introduce a new compound: 6674-22-2, Name is 2,3,4,6,7,8,9,10-Octahydropyrimido[1,2-a]azepine, molecular formula is C9H16N2, belongs to benzoxazole compound. In a document, author is Saranya, Thachora Venu, Reference of 6674-22-2.

Development of newer methods for the synthesis of Benzoxazoles has of greater interest due to their wide range of biological activities and pharmaceutical importance. We herein report a facile and general method for the synthesis of 2-substituted Benzoxazoles via copper catalyzed intramolecular C-O cross-coupling of 2-haloanilides. A combination of CuI (5 mol%), 2,2′-bipyridine (10 mol%), Cs2CO3 (2 equiv.) in DMF solvent with 4 angstrom molecular sieves at 140 degrees C, illustrated the scope for tuning the reactivity of 2-haloanilides toward the selective formation of a series of 2-alkyl benzoxazole derivatives in moderate to good yields. This is the first systematic study using CuI/2,2′-Bipyridine as the catalytic system for the synthesis of 2-substituted Benzoxazoles. The outcome of the reaction was found to be significantly influenced by the aromatic and amide substituents of 2-haloanilides. [GRAPHICS]

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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

Chemical engineers work across a number of sectors, processes differ within each of these areas, but chemistry and chemical engineering roles are found throughout, and are directly involved in the manufacturing process of chemical products and materials. Category: benzoxazole

Adenylate-forming enzymes (AFEs) are a mechanistic superfamily of proteins that are involved in many cellular roles. In the biosynthesis of benzoxazole antibiotics, an AFE has been reported to play a key role in the condensation of cyclic molecules. In the biosynthetic gene cluster for the benzoxazole AJI9561, AjiA1 catalyzes the condensation of two 3-hydroxyanthranilic acid (3-HAA) molecules using ATP as a co-substrate. Here, the enzymatic activity of AjiA1 is reported together with a structural analysis of its apo form. The structure of AjiA1 was solved at 2.0 angstrom resolution and shows a conserved fold with other AFE family members. AjiA1 exhibits activity in the presence of 3-HAA (K-m = 77.86 +/- 28.36, k(cat) = 0.04 +/- 0.004) and also with the alternative substrate 3-hydroxybenzoic acid (3-HBA; K-m = 22.12 +/- 31.35, k(cat) = 0.08 +/- 0.005). The structure of AjiA1 in the apo form also reveals crucial conformational changes that occur during the catalytic cycle of this enzyme which have not been described for any other AFE member. Consequently, the results shown here provide insights into this protein family and a new subgroup is proposed for enzymes that are involved in benzoxazole-ring formation.

We are continuing to develop the new Research Structures and WebCSD systems in response to feedback from you, our user community, so we would love to hear what you think about the enhanced search functionality and any suggestions you might have about 540-36-3. Category: benzoxazole.

Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem