Category: benzofurans

Chemistry is traditionally divided into organic and inorganic chemistry. Safety of 2-Methylbenzofuran, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 4265-25-2

Brominated flame retardant (BFR), which containing in printed circuit boards (WPCBs), brings a series of environmental and health problems. Hydrothermal technology was applied to decompose brominated epoxy resin in WPCBs at subcritical or supercritical water conditions. The brominated epoxy resin was decomposed into oil and the environmental influence of BFR was eliminated. The experiment was carried out in a 5.7 ml tube reactor and heated by a salt-bath. The variation of degradation rate of brominated epoxy resin with reaction temperature, time and additives were studied. The compositions of liquid products were analyzed by gas chromatography-mass spectrometry (GC-MS). When reaction temperature exceeded 300 C, retention time stayed over 30 min and alkaline additive existed, more than 80% brominated epoxy resin could be mainly decomposed into phenol, which can be used as chemical material. Two different hydrothermal decomposition pathways were discussed according to the characterization of products. The results indicated that brominated epoxy resin in WPCBs could be handled effectively by hydrothermal decomposition.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H337O – PubChem

Reference of 4265-25-2, Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 4265-25-2, molcular formula is C9H8O, introducing its new discovery.

Tomato juice contains volatile compounds that are originally detected in fruit, such as terpenes, and others that are originated during processing by lipoxygenase activity, carotenoid co-oxidation and Maillard reaction that can be activated during the thermal treatments. This paper reports the analysis of the volatile compounds of tomato juice sampled by solid phase microextraction (SPME) and the optimization of the blanching parameters in tomato juice, using the volatile compounds as markers. One hundred and ninety volatile compounds, including ketones, aldehydes, alcohols, esters, ethers, hydrocarbons, sulfur, nitrogen and oxygen compounds, phenols, oxygen-containing heterocyclic compounds, free acids and lactones, were identified or tentatively identified by the GC-MS technique. The thermal treatment mainly modifies saturated and unsaturated C6 alcohols and aldehydes, esters, ketones and carotenoid derivatives. The optimal conditions for the blanching, selected by response surface modelling (RSM), were 67C for 24 min and 86C for 3.5 min for the cold break and the hot break treatments, respectively. Copyright (C) 2000 Elsevier Science Ltd.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 4265-25-2 is helpful to your research. Reference of 4265-25-2

Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H273O – PubChem

Chemistry is traditionally divided into organic and inorganic chemistry. Recommanded Product: 1-Benzofuran-2-carbonitrile, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 41717-32-2

A variety of aromatic and aliphatic carboxylic acids were smoothly converted into the corresponding nitriles in good yields in a one-pot procedure by treatment with ethyl iodide/K2CO3/18-crown-6, followed by sodium diisobutyl-tert-butoxyaluminium hydride (SDBBA-H), and finally treatment with molecular iodine or 1,3-diiodo-5,5-dimethylhydantoin (DIH), and aqueous ammonia. This method is useful for the conversion of various aromatic and aliphatic carboxylic acids into the corresponding nitriles in a one-pot procedure. A variety of aromatic and aliphatic carboxylic acids were smoothly converted into the corresponding nitriles in good yields in a one-pot procedure by treatment with ethyl iodide/K2CO3/18-crown-6, followed by sodium diisobutyl-tert-butoxyaluminium hydride (SDBBA-H), and finally treatment with molecular iodine or 1,3-diiodo-5,5-dimethylhydantoin (DIH), and aqueous ammonia. Copyright

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H619O – PubChem

Electric Literature of 125-20-2, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.125-20-2, Name is Thymolphthalein, molecular formula is C28H30O4. In a Article，once mentioned of 125-20-2

Understanding the changes in the pore solution upon carbonation is crucial with respect to comprehending the mechanisms of reinforcement corrosion in carbonated mortar or concrete. In this paper we used Cold Water Extraction (CWE), a rapid leaching method, on profile ground powder from partially carbonated Portland cement and Portland-fly ash cement mortars to study changes in the pore solution composition. Carbonation decreased the free alkali metal content measured with CWE, which matched with the portlandite profiles determined by thermogravimetry and the carbonation depth detected with pH indicator. The alkali metal uptake by carbonation products was confirmed by SEM-EDS and thermodynamic modelling. Besides the decrease in the alkali metal concentration in the pore solution upon carbonation, we observed for both binders a considerable increase in chlorine and sulphur concentrations. This can further accelerate corrosion in carbonated concrete.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H4288O – PubChem

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, Product Details of 18959-30-3, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 18959-30-3, Name is 4,5-Difluorophthalic Anhydride, molecular formula is C8H2F2O3

A series of addition-type imide oligomer (degree of polymerization: n=1-9) derived from 2,3,3′,4′-diphenyl ether tetracarboxylic acid dianhydride (a-ODPA), 3,4′-oxydianiline (3,4′-ODA) and 4-phenylethynylphthalic anhydride (PEPA) was synthesized by thermal imidization. The resultant oligomers were characterized for their chemical architecture, thermal property, and processability. The experimental results showed that oligomers PI-1 and PI-2 had somewhat crystalline phase. PI-4, PI-6 and PI-9 exihibited high solubility in solvents. These imide oligomers have a very low melt viscosity, and thus provide wide processing window by the rheological behaviors. Furthermore, the cured polyimides exhibited excellent thermal stability under N2 atmosphere. The temperatures of 5? weight loss in N2 atmosphere were all above 524C.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H2980O – PubChem

Reference of 1563-38-8, 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, 1563-38-8, 2,2-Dimethyl-2,3-dihydrobenzofuran-7-ol, introducing its new discovery.

A luxAB-mutant of the carbofuran degrading bacterium Burkholderia cepacia PCL3 was successfully constructed with the capability to emit a luminescence signal of 1.6×10-3RLUcfu-1. The mutant has a growth pattern and carbofuran degradation ability similar to PCL3 wild-type. The luminescent emission by PCL3:luxAB1 directly correlated with the metabolic activity of the cells. The optimal pH, temperature and n-decanal concentration for luminescence emission are 7.0, 35C and 0.01%, respectively. PCL3:luxAB1 was used to assess the toxicity of carbofuran and carbofuran phenol in basal salt medium (BSM) in which the different sensitivity of the cells is dependent on the biomass concentration. With the luciferase system, the degradative fraction of the augmented PCL3:luxAB1 and the difference between the active augmented PCL3:luxAB1 and indigenous microorganisms at the contaminated site could be indicated.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Reference of 1563-38-8. In my other articles, you can also check out more blogs about 1563-38-8

Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H2399O – PubChem

In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Application In Synthesis of Crystal violet lactone, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 1552-42-7, name is Crystal violet lactone. In an article，Which mentioned a new discovery about 1552-42-7

Thermochromic films with intriguing functionalities have great potential in soft actuators, heat storage devices, and interactive interface sensors. Inspired by the unique features of bird feathers (such as Nicobar pigeon, Anna hummingbird, mandarin duck, etc.), a superhydrophobic thermochromic film (STF) with robust healability is proposed for the first time through sandwiching an electric heater between a top thermochromic layer and a bottom poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) substrate. The STF exhibits fast and reversible color conversions of blue-pink-yellow under a low input power and has a superhydrophobic property with a contact angle of 155. Furthermore, owing to the strong dynamic dipole-dipole interactions between the polar CF3 groups of flexible PVDF-HFP chains, the STF possesses a robust healing capability of structure and conductivity. By means of the temperature difference generated by the objects contacting (finger, iron, and water) as a stimulus, the STFs achieve tactile imaging and writing record with advantages of transient display, automatic erasure, and excellent reusability. Additionally, the STF-based anti-counterfeiting security labels with superhydrophobicity and three-state color switching simultaneously realize facile distinguishment and difficult forgery. The findings conceivably stand out as a new methodology to fabricate functional thermochromic materials for innovative applications.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H4205O – PubChem

Application of 4265-16-1, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.4265-16-1, Name is Benzo[b]furan-2-carboxaldehyde, molecular formula is C9H6O2. In a article，once mentioned of 4265-16-1

The direct coupling of various aldehydes and ketones with CH2Br2 or CH2Cl2 promoted by TiCl4-Mg bimetallic complex provides an extremely simple, practical, and efficient approach for the construction of bromomethyl or chloromethyl carbinols. The high chemoselectivity of this chemistry is illus-trated by the TiCl4-Mg-promoted selective coupling of CH2Br2 or CH2Cl2 with an aldehyde in the presence of ketone and selective transfer of CH2Br or CH2Cl to saturated carbonyl moiety. This protocol is also suitable for sterically hindered and enoliza-ble carbonyl compounds.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H1119O – PubChem

Related Products of 57319-65-0, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.57319-65-0, Name is 6-Aminoisobenzofuran-1(3H)-one, molecular formula is C8H7NO2. In a Article，once mentioned of 57319-65-0

Uncialamycin analogs were evaluated as potential cytotoxic agents in an antibody-drug conjugate (ADC) approach to treating human cancer. These analogs were synthesized using Hauser annulations of substituted phthalides as a key step. A highly potent uncialamycin analog 3c with a valine-citrulline dipeptide linker was conjugated to an anti-mesothelin monoclonal antibody (mAb) through lysines to generate a meso-13 conjugate. This conjugate demonstrated subnanomolar potency (IC50 = 0.88 nM, H226 cell line) in in vitro cytotoxicity experiments with good immunological specificity to mesothelin-positive lung cancer cell lines. The potency and mechanism of action of this uncialamycin class of enediyne antitumor antibiotics make them attractive payloads in ADC-based cancer therapy.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H1383O – PubChem

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, Computed Properties of C9H8O, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 4265-25-2, Name is 2-Methylbenzofuran, molecular formula is C9H8O

4,6-Dinitrobenzofuroxan (DNBF) and 4,6-dinitrobenzofurazan (DNBZ) behave as conventional electrophiles toward 2,5-dimethylpyrrole, 2,5-dimethylthiophene, and 2-methylbenzofuran, adding to the unsubstituted beta-carbon to form the corresponding ? adducts in Me2SO.In contrast reactions with 2,5-dimethylfuran result in electrophilic substitution of a methyl group as the only observed process.The mechanism of the latter reaction is discussed with reference to previously reported results.This leads to some reconsideration of current notions regarding the mechanism of electrophilic side-chain reactions of 2,5-dimethyl five-membered ring heterocycles.It is also concluded that DNBF and DNBZ have an electrophilic character of the same order as that of 2,4-dinitrobenzenediazonium cation.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H290O – PubChem