Category: benzofurans

25834-16-6, Name is 1,3-Isobenzofurandione, 4,7-dibromo, belongs to benzofurans compound, is a common compound. Recommanded Product: 1,3-Isobenzofurandione, 4,7-dibromoIn an article, once mentioned the new application about 25834-16-6.

We report the synthesis and characterization of thienylenevinylene-based donor-acceptor alternating copolymers (PTVPhI-Eh and PTVPhI-C12) as highly efficient ambipolar semiconductors in a thin film transistor. These polymers exhibit significantly improved hole and electron mobilities after thermal annealing. To determine the relationship between ambipolar charge transport and thermal annealing, we investigated these polymers using various analyses such as optical spectroscopy, Raman spectroscopy, computational quantum chemical calculation, X-ray diffraction, atomic force microscopy, and ambipolar charge mobility measurements. In pristine films, the polymer chains exhibited weak intra- and interchain ordering. However, when samples were annealed at sufficiently high temperatures, they exhibited a more ordered intra- and interchain conformation. As a result, we found a strong relationship between intra- and interchain conformational changes of the polymers and corresponding ambipolar charge transport properties during thermal annealing processes. Finally, we demonstrate complementary-like ambipolar inverters using a PTVPhI-Eh polymer. The largely shifted inverting voltage was improved for the thermally annealed inverters, which exhibited large voltage gains (?40).

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Benzofuran – Wikipedia,
Benzofuran | C8H4113O – PubChem

18959-30-3, Name is 4,5-Difluorophthalic Anhydride, belongs to benzofurans compound, is a common compound. HPLC of Formula: C8H2F2O3In an article, once mentioned the new application about 18959-30-3.

To investigate the effect of reactive end-capping groups on film-forming quality and processability, a series of molecular weight-controlled aromatic poly(amic acid) (PAA) resins functionalized with phenylethynyl end groups were prepared via the polycondensation of 3,3?,4,4?-biphenyltetracarboxylic dianhydride (BPDA), para-phenylenediamine (PDA), and 4-phenylethynyl phthalic anhydride (PEPA) served as molecular-weight-controlling and reactive end capping agent. The PAA resins with relatively high concentrations endow enhanced wetting/spreading ability to form PAA gel films by solution-cast method which were thermally converted to the fully-cured polyimide (PI) films. The mechanical and thermal properties of PI films were investigated as a function of PAA molecular weights (Mn) and thermal-curing parameters. Mechanical property, dimensional stability and heat resistance of the fully-cured PI films with PAA Mn > 20 ×103 g mol?1 are found to be better than that of their unreactive phthalic end-capped counterparts. The covalent incorporation of chain-extension structures in the backbones, induced by thermal curing of phenylethynyl groups, might facilitate yielding a higher degree of polymer chain order and consequently improved resistance strength and elongation at break to tensile plastic deformation.

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Benzofuran – Wikipedia,
Benzofuran | C8H2983O – PubChem

16859-59-9, Name is 3-Hydroxyisobenzofuran-1(3H)-one, belongs to benzofurans compound, is a common compound. Computed Properties of C8H6O3In an article, once mentioned the new application about 16859-59-9.

Since the usual 13C shift increments are not applicable for very highly substituted benzenes, the 13C NMR spectra of 3-O-ethyl-cyclopolic acid (1) and 2 were studied and fully analyzed.These results were essential for the structure elucidation of a number of new highly substituted phthalides recently isolated from cultures of Aspergillus duricaulis. – Key words: 13C NMR Spectra, Polysubstituted Naturally Occurring Phthalides

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Benzofuran – Wikipedia,
Benzofuran | C8H1435O – PubChem

Reference of 4687-25-6, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 4687-25-6, Name is Benzofuran-3-carbaldehyde, molecular formula is C9H6O2. In a Article，once mentioned of 4687-25-6

The acetylcholine binding protein (AChBP) is considered an analogue for the ligand-binding domain of neuronal nicotinic acetylcholine receptors (nAChRs). Its stability and solubility in aqueous buffer allowed the development of an online bioaffinity analysis system. For this, a tracer ligand which displays enhanced fluorescence in the binding pocket of AChBP was identified from a concise series of synthetic benzylidene anabaseines. Evaluation and optimization of the bioaffinity assay was performed in a convenient microplate reader format and subsequently transferred to the online format. The high reproducibility has the prospect of estimating the affinities of ligands from an in-house drug discovery library injected in one known concentration. Furthermore, the online bioaffinity analysis system could also be applied to mixture analysis by using gradient HPLC. This led to the possibility of affinity ranking of ligands in mixtures with parallel high-resolution mass spectrometry for compound identification.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Reference of 4687-25-6. In my other articles, you can also check out more blogs about 4687-25-6

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Benzofuran – Wikipedia,
Benzofuran | C8H1188O – PubChem

Synthetic Route of 496-41-3, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.496-41-3, Name is Benzofuran-2-carboxylic acid, molecular formula is C9H6O3. In a Article，once mentioned of 496-41-3

Enantioselective hydrogenation of the aromatic ring of furancarboxylic acids is an important new application of cinchona-modified palladium as there is no synthetically useful method yet available for this transformation. Here we report a mechanistic investigation of the hydrogenation of furan-2-carboxylic acid. The 5 wt.% Pd/Al2O3 catalyst was chirally modified by cinchonidine (CD) derivatives, (R)-1-(1-naphthyl)ethylamine derivatives, and (R)-1-(1-naphthyl)-ethanol. Variation of the structure of the modifiers revealed that the major requirement an efficient chiral modifier has to fulfill is the presence of a basic N and an OH function. The relative position of the two functional groups and the acidity (proton donor ability) of the OH group are not critical as indicated by the similar efficiency of 1,2- and 1,3-amino alcohols and amino phenols. The enantioselection is attributed to the formation of a cyclic, 2:1 acid:modifier complex that adsorbs close to parallel to the Pd surface via pi-bonding of the aromatic rings of substrate and modifier. The model can interpret also the effect of a strong acid additive. The poor performance of amine type modifiers is attributed to the formation of too flexible, acyclic structures.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H1892O – PubChem

125-20-2, Name is Thymolphthalein, belongs to benzofurans compound, is a common compound. name: ThymolphthaleinIn an article, once mentioned the new application about 125-20-2.

Exponential interest in the field of covalent organic frameworks (COFs) stems from the direct correlation between their modular design principle and various interesting properties. However, existing synthetic approaches to realize this goal mainly result in insoluble and unprocessable powders, which severely restrict their widespread applicability. Therefore, developing a methodology for easy fabrication of these materials remains an alluring goal and a much desired objective. Herein, we have demonstrated a bottom-up interfacial crystallization strategy to fabricate these microcrystalline powders as large-scale thin films under ambient conditions. This unique design principle exploits liquid-liquid interface as a platform, allowing simultaneous control over crystallization and morphology of the framework structure. The thin films are grown without any support in free-standing form and can be transferred onto any desirable substrate. The porous (with Tp-Bpy showing highest SBET of 1a151 m2 g-1) and crystalline thin films, having high chemical as well as thermal stability, also hold the merit to tune the thickness as low as sub-100 nm. These nanostructured thin COF films demonstrate remarkable solvent-permeance and solute-rejection performance. A prominent instance is the Tp-Bpy thin film, which displays an unprecedented acetonitrile permeance of 339 L m-2 h-1 bar-1.

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Benzofuran – Wikipedia,
Benzofuran | C8H4290O – PubChem

Electric Literature of 10242-12-3, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Article, and a compound is mentioned, 10242-12-3, 5-Nitrobenzofuran-2-carboxylic acid, introducing its new discovery.

Ribosylation reactions of previously silylated 3-carbethoxy-8-methyl-1,4-dihydro-4-oxoquinoline (6a) and 3-carbethoxy-6-methyl-1,4-dihydro-4-oxoquinoline (6b) with 1-O-acetyl-2,3,5-tri-O-benzoyl-beta-D-ribofuranose (7), under Lewis acid catalysis, were studied. The method using hexamethyldisilazane (HMDS)/trimethylchlorosilane (TMCS) mixture for silylation and anhydrous stannic chloride as catalyst for ribosylation failed to give any nucleoside product. On the other hand, the protected nucleoside 3-carbethoxy-6-methyl-1-(2,3,5-tri-O-benzoyl-beta-D-ribofuranosyl)-1,4- dihydro-4-oxoquinoline (8b) was obtained in good yields using bis(trimethylsilyl)trifluoroacetamide (BSTFA) containing 1% of TMCS and the same catalyst. Compound 8b was more easily isolated in higher yields with an improvement of the later method by replacing stannic chloride with trimethylsilyl trifluoromethanesulfonate (TMSOTf). De-O-benzoylation of 8b with methanolic sodium hydroxide solution afforded the free riboside 3-carbomethoxy-6-methyl-1-beta-D-ribofuranosyl-1,4-dihydro-4-oxoquinoline (9b). The structures of the obtained products were confirmed by their UV, MS, IR, 1H and 13C-NMR data.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Electric Literature of 10242-12-3. In my other articles, you can also check out more blogs about 10242-12-3

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Benzofuran – Wikipedia,
Benzofuran | C8H3520O – PubChem

In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 54008-77-4, name is 2-Bromobenzofuran, introducing its new discovery. SDS of cas: 54008-77-4

An efficient synthesis of 2-selenyl(sulfenyl)benzofurans has been accomplished through a copper(i)-catalyzed tandem reaction of 2-(gem-dibromovinyl)phenols with diorganyl diselenides and disulfides in the presence of CuI/Mg/t-BuOLi in DMSO. Using this protocol, a variety of 2-selenyl(sulfenyl)benzofuran derivatives were obtained in good yields.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H3244O – PubChem

Application of 14963-96-3, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 14963-96-3, Name is 4-Methoxyisobenzofuran-1,3-dione, molecular formula is C9H6O4. In a Article，once mentioned of 14963-96-3

A problem of 3-methoxyphthalide reduction by metal hydrides was reinvestigated. Various effects controlling selectivity of reductions in 3-substituted phthalides were studied, and a qualitative interpretation of the results is now proposed. Methods for obtaining enhanced yields of one or the other lactonic product were developed.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Application of 14963-96-3. In my other articles, you can also check out more blogs about 14963-96-3

Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H2883O – PubChem

652-39-1, Name is 4-Fluoroisobenzofuran-1,3-dione, belongs to benzofurans compound, is a common compound. Formula: C8H3FO3In an article, once mentioned the new application about 652-39-1.

A process for the preparation of fluoroaniline compounds comprises the steps of (A) reacting an ammonium fluorophthalamate or a fluorophthalamic acid of the formula STR1 where n is 1 or 2 with an alkali or an alkali earth metal hypochlorite to form the corresponding fluoroanthranilic acid; and (B) decarboxylating the fluoroanthranilic acid by reaction with a mineral acid to form the corresponding fluoroaniline of the formula STR2 where n is as previously defined.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H2477O – PubChem