Tag: M.W:200-300

A one-pot strategy for the diversified synthesis of 3-difluoromethyl benzoxazole-2-thiones is reported. The reaction of 2-aminophenol, sodium chlorodifluoroacetate, and elemental sulfur in the presence of NaOt-Bu gives exclusively 3-difluoromethyl benzoxazole-2-thiones in good yield (up to 98%). The mechanism of this reaction presumably involves first cyclization of 2-aminophenols with thiocarbonyl fluoride, followed by N-difluoromethylation with difluorocarbene. The developed synthetic procedures are versatile, robust, and easily scalable for the synthesis of 3-difluoromethyl benzoxazole-2-thione derivatives, some of which have shown insecticidal activities.

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

Aromatic rings are highly stable due to the arrangement of the π-electrons situated above and below the plane of the aromatic ring, which form a π-electron cloud. 5471-63-6, Name is 1,3-Diphenylisobenzofuran, molecular formula is C20H14O, belongs to benzoxazole compound. In a document, author is Duda, Przemyslaw, Category: benzoxazole.

Long-term potentiation (LTP) is a molecular basis of memory formation. Here, we demonstrate that LTP critically depends on fructose 1,6-bisphosphatase 2 (Fbp2)-a glyconeogenic enzyme and moonlighting protein protecting mitochondria against stress. We show that LTP induction regulates Fbp2 association with neuronal mitochondria and Camk2 and that the Fbp2-Camk2 interaction correlates with Camk2 autophosphorylation. Silencing of Fbp2 expression or simultaneous inhibition and tetramerization of the enzyme with a synthetic effector mimicking the action of physiological inhibitors (NAD(+)and AMP) abolishes Camk2 autoactivation and blocks formation of the early phase of LTP and expression of the late phase LTP markers. Astrocyte-derived lactate reduces NAD(+)/NADH ratio in neurons and thus diminishes the pool of tetrameric and increases the fraction of dimeric Fbp2. We therefore hypothesize that this NAD(+)-level-dependent increase of the Fbp2 dimer/tetramer ratio might be a crucial mechanism in which astrocyte-neuron lactate shuttle stimulates LTP formation.

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Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem

22439-61-8, Name is 2-Bromodibenzo[b,d]thiophene, molecular formula is C12H7BrS, molweight is 263.15(g/mol). In this document, Heteroaromatic rings as linkers for quercetin-based dye-sensitized solar cell applications: a TDDFT investigation. Application of 22439-61-8.

The electronic properties of quercetin (Q)-pi-cyanoacrylic acid (CNA) dye molecules using heteroaromatic rings, namely cyclopentadiene (F1), furan (F2), pyrrole (F3), thiophene (F4), oxazole (F5), imidazole (F6), thiazole (F7), isoindene (FF1), benzofuran (FF2), indole (FF3), benzothiophene (FF4), benzoxazole (FF5), benzimidazole (FF6), and benzothiazole (FF7), as pi-linkers are studied for the first time using Time-Dependent Density Functional Theory (TDDFT) with dimethyl sulfoxide (DMSO) as solvent to predict their excitation energy, absorption wavelength, oscillator strength, light harvesting efficiency, and exciton binding energy. The charge transfer and charge regeneration in the ground and excited states of the dyes are established. The photon to electron energy transfer from the dye (quercetin) to the semiconductor (TiO2) surface is analyzed based on intramolecular charge transfer. The results of the electron transfer studies on these newly designed dyes could be used to enhance the performance of resulting dye-sensitized solar cells.

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

New month, new HOT articles! We are pleased to share a selection of our referee-recommended HOT articles in 2021. We hope you enjoy reading these articles. Recommanded Product: 1-Bromopyrene, Name is 1-Bromopyrene, molecular formula is C16H9Br, molecular weight is 281.15, MDL number is MFCD00015767, category is benzoxazole. Now introduce a scientific discovery about this category.

A novel 2-(Z,E-1,2-diferrocenylvinyl)arenooxazoles 4a-f and 5a-e (24-32%, 2:1, respectively), 3-ferrocenyl-2-ferrocenylmethyl-2-morpholino-2H-areno[1,4]oxazines 7a-f (22-33%), 2′,3′-diferrocenyl-3H-spirolareno[d]oxazole-2,1′-cycloprop[2]ene] 6-f (5-6%), 2-ferrocenylarenooxazoles 3a-e (4-6%), and 3,4-diferrocenyl-8-hydroxyquinolines 8d-f (ca-25-30%) are described by reactions of 2,3-diferrocenyl-1-morpholino-cyclopropenium salts 1 with 1,2-aminophenols 2a-e and 2,3-aminonaphthol 2f in the presence of Et3N is described. A new reaction of transformation of the intermediate products of the addition of 1,2-aminoarenols 2a-f to the diferrocenyl-cyclopropenium cation 1 in the positions C(1) and C(2) is found. The characterization of the new compounds was done by IR, H-1- and C-13-NMR spectroscopy, mass-spectrometry, elemental analysis, and X-ray diffraction. Compounds 4a, 4e, 5a, 5e and 6a were the most active with modest cytotoxic activity against three human cancer cell lines K-562 (leukemia), MCF-7 (breast) and SKLU-1 (lung). (C) 2018 Elsevier B.V. All rights reserved.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about C16H9Br. Recommanded Product: 1-Bromopyrene.

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

When developing chemical systems it’s of course important to gain a deep understanding of the chemical reaction process. 5471-63-6, Name is 1,3-Diphenylisobenzofuran, molecular formula is C20H14O, belongs to benzoxazole compound. In a document, author is Chong, MuiPhin, Recommanded Product: 1,3-Diphenylisobenzofuran

There is current interest in developing human hypoxia-inducible factor (HIF) prolyl hydroxylase domain (PHD) inhibitors for the treatment of anemia and other hypoxia-related diseases. We describe the synthesis of 3-carbamoylpropanoic acid derivatives and their evaluation as human PHD-2 inhibitors. MS assays indicated that derivatives with a 3-carbamoylpropanoic acids-containing benzoxazole moiety are inhibitors of PHD-2 with IC50 values of 2.24 mu M and 1.32 mu M, respectively. However, neither the acids nor their respective ethyl esters were observed to upregulate HIF-1 alpha levels in cells.

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

New Advances in Chemical Research in 2021. Catalysts are in the same phase as the reactants. Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 540-37-4, Name is 4-Iodoaniline, molecular formula is C6H6IN, belongs to benzoxazole compound. In a document, author is Mostafavi, Hamid, Computed Properties of https://www.ambeed.com/products/540-37-4.html.

An operationally simple method for synthesis of benzimidazole and 3H-imidazo[4,5-c]pyridine from o-phenylenediamine or pyridine-3, 4-diamine and N,N-dimethylformamide (DMF) in the presence of hexamethyldisilazane (HMDS) as a reagent is described. To evaluate the scope of application of this reagent, it was also used to prepare benzothiazole, 1H-perimidine, and benzoxazole, which was successful for benzothiazole and 1H-perimidine but benzoxazole was not formed. This reaction complies with the principles of green chemistry as it does not use toxic solvents, transition metals, or strong acids. The products are obtained in moderate to excellent yields.

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

New research progress on 165534-43-0 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. 165534-43-0, Name is Diethyl (4-oxobenzo[d][1,2,3]triazin-3(4H)-yl) phosphate, molecular formula is C11H14N3O5P, belongs to benzoxazole compound. In a document, author is Omar, A. Mohsen M. E., Electric Literature of 165534-43-0.

New 2-substituted benzoxazole derivatives were synthesized and screened for their in vitro anti-proliferative activities against MCF-7 and MDA-MB-231 cell lines. Compounds 4b, 4d and 11c eliciting the highest activity against MCF-7 cells were further assayed for their cytotoxic activities against A431 and HCC827 cancer cells in addition to their in vitro inhibition of wild and mutated epidermal growth factor receptor (EGFR) enzymes. Compound 11c was the most active against A431 cells and it displayed a potent inhibition of EGFR(WT) while compounds 4b and 4d elicited higher potencies than erlotinib against mutated EGFR(L858R). Compounds 4a, 6c and 8a showed the most potent cytotoxic activity against MDA-MB-231 cancer cells where compounds 4a and 6c were slightly less potent aromatase (ARO) inhibitors than letrozole. MCF-7 cells treated with compounds 4b, 4d, 11c and MDA-MB-231 cells treated with compounds 4a, 6c and 8a showed remarkable over-expression of caspase-9 protein level and elicited pre G1 apoptosis and cell cycle arrest at G2/M phase in addition to high annexin V binding affinity indicating significant apoptosis. Chemo-informatic and docking properties were also predicted. Docking results revealed that docked compounds displayed binding modes with EGFR and ARO enzymes comparable to that of the reference ligands. The benzoxazole derivatives 11c and 6c possessing amide and dithiocarbamate moieties respectively were found to be potent apoptosis-inducing anti-breast cancer agents with acceptable physicochemical properties. They exert their activity via inhibition of EGFR and ARO enzymes respectively.

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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. Related Products of 1714-29-0, Name is 1-Bromopyrene, molecular formula is C16H9Br, molecular weight is 281.15, category is benzoxazole. Now introduce a scientific discovery about this category.

Membrane technology operating in highly concentrated solutions is essential in pressure retarded osmosis (PRO) applications to compete with other renewable energy technologies. Herein, we fabricated highly porous and robust electrospun membranes (ESMs) using a poly(benzoxazole-co-imide) (PBO) polymer. For the first time in osmotic-driven systems, novel one-step direct fluorination was adopted to increase hydrophilicity of the ESM. Direct fluorination increased the total surface energy of the ESM by boosting polar surface energy parameter, which eventually affected the formation of ‘ridge & valley’-like thin film composite membrane (PBO-TFC-F5) through interfacial polymerization of the fluorinated ESM. As a result, PBO-TFC-F5 achieved an unprecedented power density of 87.2 W m(-2) using 3 M NaClaq as a draw solution at 27 bar. When PBO-TFC-F5 was used for osmotic heat engine (OHE), it showed a power generation cost of only 203 $center dot MWh(-1), which was less than half the cost observed using commercial membranes. This robust, porous, and high performance PBO-TFC-F5 opens up new possibilities in membrane-based power generation systems.

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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. Related Products of 345-92-6

Translational readthrough-inducing drugs (TRIDs ) rescue the functional full-length protein expression in genetic diseases, such as cystic fibrosis, caused by premature termination codons (PTCs). Small molecules have been developed as TRIDs to trick the ribosomal machinery during recognition of the PTC. Herein we report a computational study to identify new TRID scaffolds. A pharmacophore approach was carried out on compounds that showed readthrough activity. The pharmacophore model applied to screen different libraries containing more than 87000 compounds identified four hit-compounds presenting scaffolds with diversity from the oxadiazole lead. These compounds have been synthesized and tested using the Fluc reporter harboring the UGA PTC. Moreover, the cytotoxic effect and the expression of the CFTR protein were evaluated. These compounds, a benzimidazole derivative (NV2899), a benzoxazole derivative (NV2913), a thiazole derivative (NV2909), and a benzene-1,3-disulfonate derivative (NV2907), were shown to be potential new lead compounds as TRIDs, boosting further efforts to address the optimization of the chemical scaffolds.

Related Products of 345-92-6, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about C13H8F2O is helpful to your research.

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

165534-43-0, molecular formula is C11H14N3O5P, molweight is 299.2197(g/mol), smiles is O=P(OCC)(OCC)ON1N=NC2=CC=CC=C2C1=O. In this document, Crystal structure and Hirshfeld surface analysis of 2-[(1,3-benzoxazol-2-yl)sulfanyl]-N-(2-methoxyphenyl)acetamide. HPLC of Formula: https://www.ambeed.com/products/165534-43-0.html.

In the title compound, C16H14N2O3S, the 1,3-benzoxazole ring system is essentially planar (r.m.s deviation = 0.004 angstrom) and makes a dihedral angle of 66.16 (17)degrees with the benzene ring of the methoxyphenyl group. Two intramolecular N -H center dot center dot center dot O and N -H center dot center dot center dot N hydrogen bonds occur, forming S(5) and S(7) ring motifs, respectively. In the crystal, pairs of C-H center dot center dot center dot O hydrogen bonds link the molecules into inversion dimers with R-2(2)(14) ring motifs, stacked along the b-axis direction. The inversion dimers are linked by C-H center dot center dot center dot-pi and pi-pi-stacking interactions [centroid-to-centroid distances = 3.631 (2) and 3.631 (2) angstrom], forming a three-dimensional network. Two-dimensional fingerprint plots associated with the Hirshfeld surface show that the largest contributions to the crystal packing come from H center dot center dot center dot H (39.3%), C center dot center dot center dot-H/H center dot center dot center dot C (18.0%), O center dot center dot center dot H/H center dot center dot center dot O (15.6) and S center dot center dot center dot H/H center dot center dot center dot S (10.2%) interactions.

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