Category: 319-03-9

New Advances in Chemical Research in 2021. In heterogeneous catalysis, catalysts provide a surface to which reactants bind in a process of adsorption. The reactant in an enzyme-catalyzed reaction is called a substrate. 319-03-9, Name is 5-Fluoroisobenzofuran-1,3-dione, molecular formula is , belongs to benzoxazole compound. In a document, author is Tasci, Meryem, Category: benzoxazole.

In the present study, a series of nine novel 5-substituted-2-(p-tert-butylphenyl)benzoxazole derivatives have been synthesized and their structures confirmed by spectral techniques and also tested for their antimicrobial activities. The minimum inhibitory concentrations (MIC) of the new benzoxazoles have been determined against standard bacterial and fungal strains and drug-resistant isolates and compared to those of several reference drugs. The new benzoxazole derivatives are found to possess a broad spectrum of antibacterial activity with MIC values of 8-256 mu g/mL. Especially, compound 9 is more active than standard drugs ciprofloxacin and cefotaxime against E. coli isolate with a MIC value of 8 mu g/mL. Also new compounds are less active than fluconazole with a MIC value of 256 mu g/mL against C. albicans and its isolate except for compound 9 that shows better activity other compounds with a MIC value of >4 mu g/mL for their antifungal activity.

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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

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 Zhang, Kan, Name: 5-Fluoroisobenzofuran-1,3-dione.

A novel ortho-phthalimide-functionalized benzoxazine monomer containing an ortho-nitrile group has been synthesized in order to further systematically evaluate the thermally induced structural transformation from benzoxazine resin to cross-linked polybenzoxazole. The chemical structure of the synthesized monomer has been confirmed by H-1 and C-13 nuclear magnetic resonance (NMR) spectroscopy and Fourier transform infrared (FT-IR) spectroscopy. Also supporting the detailed structure is H-1-C-13 heteronuclear multiple quantum coherence (HMQC), which identifies the local proton-carbon proximities. The polymerization behaviors, including the ring-opening polymerization of the oxazine rings and the cyclotrimerization of the nitrile functionalities, are studied by differential scanning calorimetry (DSC) and in situ FT-IR. In addition, the subsequent benzoxazole formation after polymerization has also been analyzed using thermogravimetric analysis (TGA) and magic-angle spinning (MAS) solid-state C-13 NMR. The resulting cross-linked polybenzoxazole derived from the benzoxazine monomer exhibits exceptionally high thermal stability and low flammability, with an extremely high T-d5 temperature (550 degrees C), a high char yield value (70%) and an extraordinarily low total heat release (THR of 7.6 kJ g(-1)).

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

Aromatic interactions can greatly affect the stability and interactions of a crystal. They are the strongest such interactions after hydrogen bonding. 319-03-9, Name is 5-Fluoroisobenzofuran-1,3-dione, molecular formula is C8H3FO3, belongs to benzoxazole compound. In a document, author is Sugiyarto, Kristian Handoyo, Category: benzoxazole.

The ligand of 2-(pyridin-2-yl)benzoxazole (pbo) has been prepared, and the corresponding complexes of iron(II), the tetrafluoroborate, perchlorate, and tetraphenylborate, have been synthesized and characterized in details in magnetism, Mossbauer, and electronic spectral properties. It was found that the tetrafluoroborate and perchlorate were observed to be normal paramagnet, with the magnetic moment of 5.29 BM (theta = -6K) for the perchlorate and 5.06 BM (theta = -9K) for the tetrafluoroborate complexes at room temperature. For the tetraphenylborate complex, the magnetic moment was found to be 5.20-5.50 BM (at room temperature), which was slightly and gradually decreased to 4.25-4.57 BM at low temperature (90K), however. This is associated with the spin-state transition in iron(II) for this salts as indicated by its Mossbauer spectral properties. The electronic spectrum of the corresponding nickel complex showed that the ligand field strength lied in the range for which the iron(II) complex might undergo the spin-state transition.

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 C8H3FO3. Category: benzoxazole.

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

A novel benzoxazole appended dipodal Schiff base (BS) was synthesized and its sensing property was investigated. The receptor BS detected Zn2+ ions selectively by turn-on fluorescence among the wide range of metal ions in DMSO-H2O (1:9 v/v, 50 mM HEPES (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid) at pH 7.4. The different physicochemical parameters of BS-Zn2+ complex were investigated by UV-vis, photoluminescence, H-1 NMR titration and ESI-MS techniques. The limit of detection (LOD) and binding constant (K-b) of BS-Zn2+ complex have been determined by fluorescence titration and found to be 4.53 x 10(4) M-1 and 0.52 mu M. Moreover, binding ratio of BS and Zn2+ was found to be 1:1 by Job’s method. Further, the BS-Zn2+ complex was used to sense pyrophosphate (PPi) ions as a secondary sensor in HEPES buffer solution. Overall, the sensitive fluorescence behavior of the receptor BS has been utilized as a powerful tracker for zinc ion and pyrophosphate ion in biological systems.

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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. Synthetic Route of 319-03-9, Name is 5-Fluoroisobenzofuran-1,3-dione, molecular formula is C8H3FO3, molecular weight is 166.106, category is benzoxazole. Now introduce a scientific discovery about this category.

Three mononuclear Cu(I) complexes, namely, [Cu(2-PBO)(PPh3)(2)]center dot ClO4 center dot 2CH(2)Cl(2) (1), [Cu(3-PBO)(PPh3)(2)(ClO4)center dot CH2Cl2 (2) and [Cu(PBM)(PPh3)(2)]center dot ClO4 (3) (2-PBO = 2-(2′-Pyridyl)benzoxazole, 3-PBO = 2-(3′-Pyridyl)benzoxazole, PPh3 = 2-(2′-Pyridyl)benzimidazole, PPh3 = triphenylphosphine) have been synthesized and characterized by elemental analyses, IR, H-1 NMR, C-13 NMR, X-ray single crystal diffraction and thermal analysis. Photoluminescent investigation shows that complexes 1-3 exhibit distinct tunable light green (512 nm)-toyellow (557 nm) photoluminescence by varying the N-heterocyclic ligands. Three complexes show intense 2-PBO-based yellow, 3-PBO-based light green and intense PBM-based bright green luminescence upon irradiation with a standard UV lamp (lambda(ex) = 254 nm) at room temperature. Moreover, the electrochemical properties of 1-3 have been investigated by cyclic voltammetry. The results suggest the frontier molecular orbits and the HOMOLUMO energy gaps of these cuprous complexes are effectively adjusted through the introduction of different N heterocyclic ligands, thus achieving the selective luminescence of the cuprous complexes. (C) 2018 Elsevier B.V. All rights reserved.

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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. 319-03-9, Name is 5-Fluoroisobenzofuran-1,3-dione, molecular formula is C8H3FO3, belongs to benzoxazole compound. In a document, author is Tasci, Meryem, Quality Control of 5-Fluoroisobenzofuran-1,3-dione.

In the present study, a series of nine novel 5-substituted-2-(p-tert-butylphenyl)benzoxazole derivatives have been synthesized and their structures confirmed by spectral techniques and also tested for their antimicrobial activities. The minimum inhibitory concentrations (MIC) of the new benzoxazoles have been determined against standard bacterial and fungal strains and drug-resistant isolates and compared to those of several reference drugs. The new benzoxazole derivatives are found to possess a broad spectrum of antibacterial activity with MIC values of 8-256 mu g/mL. Especially, compound 9 is more active than standard drugs ciprofloxacin and cefotaxime against E. coli isolate with a MIC value of 8 mu g/mL. Also new compounds are less active than fluconazole with a MIC value of 256 mu g/mL against C. albicans and its isolate except for compound 9 that shows better activity other compounds with a MIC value of >4 mu g/mL for their antifungal activity.

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 C8H3FO3. Quality Control of 5-Fluoroisobenzofuran-1,3-dione.

Reference:
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. 319-03-9, Name is 5-Fluoroisobenzofuran-1,3-dione, molecular formula is , belongs to benzoxazole compound. In a document, author is Mao, Shanshan, Related Products of 319-03-9.

Three mononuclear Cu(I) complexes, namely, [Cu(2-PBO)(PPh3)(2)]center dot ClO4 center dot 2CH(2)Cl(2) (1), [Cu(3-PBO)(PPh3)(2)(ClO4)center dot CH2Cl2 (2) and [Cu(PBM)(PPh3)(2)]center dot ClO4 (3) (2-PBO = 2-(2′-Pyridyl)benzoxazole, 3-PBO = 2-(3′-Pyridyl)benzoxazole, PPh3 = 2-(2′-Pyridyl)benzimidazole, PPh3 = triphenylphosphine) have been synthesized and characterized by elemental analyses, IR, H-1 NMR, C-13 NMR, X-ray single crystal diffraction and thermal analysis. Photoluminescent investigation shows that complexes 1-3 exhibit distinct tunable light green (512 nm)-toyellow (557 nm) photoluminescence by varying the N-heterocyclic ligands. Three complexes show intense 2-PBO-based yellow, 3-PBO-based light green and intense PBM-based bright green luminescence upon irradiation with a standard UV lamp (lambda(ex) = 254 nm) at room temperature. Moreover, the electrochemical properties of 1-3 have been investigated by cyclic voltammetry. The results suggest the frontier molecular orbits and the HOMOLUMO energy gaps of these cuprous complexes are effectively adjusted through the introduction of different N heterocyclic ligands, thus achieving the selective luminescence of the cuprous complexes. (C) 2018 Elsevier B.V. All rights reserved.

Related Products of 319-03-9, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 319-03-9.

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

Research speed reading in 2021. Catalysts allow a reaction to proceed that has a lower activation energy than the uncatalyzed reaction. In heterogeneous catalysis, catalysts provide a surface to which reactants bind in a process of adsorption. 319-03-9, Name is 5-Fluoroisobenzofuran-1,3-dione, molecular formula is , belongs to benzoxazole compound. In a document, author is Le Anh Nguyen, Electric Literature of 319-03-9.

Elemental sulfur (S-8) was found to be an excellent stoichiometric oxidant to promote oxidative condensation of 2-aminophenols with a wide range of aldehydes, including aliphatic aldehyde such as cyclohexanecarboxaldehyde. The reactions were catalyzed by sodium sulfide in the presence of DMSO as an additive. The benzoxazole products were obtained in satisfactory yields. The reaction conditions could be applied to larger syntheses (10-50 mmol).

Electric Literature of 319-03-9, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 319-03-9.

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

Research speed reading in 2021. Catalysts allow a reaction to proceed that has a lower activation energy than the uncatalyzed reaction. In heterogeneous catalysis, catalysts provide a surface to which reactants bind in a process of adsorption. 319-03-9, Name is 5-Fluoroisobenzofuran-1,3-dione, molecular formula is , belongs to benzoxazole compound. In a document, author is Habarurema, Gratien, Safety of 5-Fluoroisobenzofuran-1,3-dione.

Rhenium(I) and (VII) complexes with cyclohex-1-enylolonium cation and bridging pyridyl derivatives are reported. Additionally, the CO-bridged pyridyl and their related compounds have shown interesting behaviour in their reactivity towards compounds containing two amino groups. The unusual cationic compound: (2,6-diaza-cyclohex-1-enylolonium)2-aza-benzoate (H(2)den), was isolated from the reaction mixture of 1,2-di(pyridin-2-yl)ethane-1,2-dione with propane-1,3-diamine in methanol. The latter ligand: H(2)den, was used in the synthesis of rhenium(I) complex in its reaction with [Re(CO)(5)Cl] that gave rise to novel rhenium(I) complex fac-[Re(CO)(3)(Hhdm)] (1). The surprising aspect in the formation of (1) is the modification of H(2)den which was stabilized into a coordinated six-membered pyrimidine ring, 1,4,5,6-tetrahydropyrimidin-2-yl)di(pyridin-2-yl)methanol (H(2)hdm) chelate. The derived ligand acts as a tridentate monoanionic N-2,O-donor ligand towards the fac-[Re(CO)(3)](+) core. Surprisingly, the 2-aza-benzoate counter-ion that was present in the used ligand is not displayed in the crystal structure of complex 1, and might have been stabilized into 2-aza-benzoic acid (picolinic acid). The reaction of the potential tridentate N-2,O-donor ligand 2,2 ‘-dipyridylketone (dpk) with trans-[ReOI2(OEt)(PPh3)(2)] led to the isolation of [ReO3(dpk center dot OH)] (2). The ligand H(2)den and the rhenium complexes were spectroscopically characterized, and the structures of H(2)den, 1 and 2 were established by X-ray diffraction.

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