Category: benzofurans

Reference of 16859-59-9, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 16859-59-9, Name is 3-Hydroxyisobenzofuran-1(3H)-one,introducing its new discovery.

The aromathecin topoisomerase I (top1) inhibitors offer promising scaffolds for the development of novel cancer chemotherapeutics. They are ‘composites’ of the camptothecin and indenoisoquinoline top1 inhibitors. Interestingly, some structure-activity relationship (SAR) overlap between the aromathecins and the indenoisoquinolines has been observed. For both classes, placement of certain polar groups in similar regions of the heteroaromatic system improves top1 inhibitory and antiproliferative activities. A series of water-soluble aromathecins substituted at position 14 with diaminoalkanes of various lengths has been prepared. These compounds all possess similar antiproliferative potency, but a general trend is observed: aromathecins with longer diaminoalkane substituents (>6 carbons) possess lower anti-top1 activity than their smaller counterparts (2-4 carbons), presumably as a result of unfavorable hydrophobic interactions. This trend is also noted with the indenoisoquinolines, revealing additional SAR overlap that supports the hypothesis that there is a ‘universal’ top1 inhibitor SAR.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H1449O – PubChem

In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Recommanded Product: 125-20-2, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 125-20-2, name is Thymolphthalein. In an article，Which mentioned a new discovery about 125-20-2

Photolytic and photocatalytic reactions of sarin (GB), soman (GD), sulfur mustard (HD), cyanogen chloride (CK) and perfluoroisobutylene (PFIB) vapors in air were carried out. It was shown that vapors of GB, GD, HD and PFIB could be efficiently eliminated by UV light from germicidal lamp through either photolysis or photocatalysis, but CK could hardly be done through photodegradation. It was demonstrated that GB, GD and HD might possibly undergo a photo-induced polymerization under UV light irradiation. Photocatalytic reaction would lead to a cleavage of these molecules into small inorganic compounds at TiO2 surface. The experimental results strongly suggested that both photolysis and photocatalysis of GB vapor at static conditions were kinetically slowed down and possibly limited by a low diffusion rate of GB molecule. It has been testified that the static photolysis approach could be applicable for decontamination of GB vapor in an indoor space. And that, a dynamic photocatalysis approach for decontamination of GB vapor was proved to be much more efficient than that through photolysis, and it was also considered to be feasible for decontamination of air polluted by GB vapor.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H4437O – PubChem

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, HPLC of Formula: C8H2F2O3, 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

Novel imide oligomers (calculated molecular weights: 1250-5000 g mol1) based on the mixture of thioetherdiphthalic anhydride isomers (m-TDPA) with 2-phenyl-4,4?-diaminodiphenyl ether (p-ODA) in the presence of 4-phenylethynylphthalic anhydride (PEPA) as reactive endcapping agent were prepared. Then pyromellitic dianhydride (PMDA) was introduced to the polymerization of m-TDPA/p-ODA (mole m -TDPA:molePMDA = 1:1). The effect of molecular weights and polymer chemical structures of the aromatic oligomers on their processability and solubility as well as the thermal and mechanical properties of the thermal-cured polyimides (PIs) was systematically investigated. All the oligomers showed good solubility (more than 30 wt%) in N-methyl-2-pyrrolidone and very low melt viscosities. The minimum melt viscosities of Oligo-5 was 61.5 Pa s at 321C. The melt viscosity of the oligomers increased with the increase of molecular weight. After thermally curing at 370C for 1 h, the thermoset PIs exhibited good thermal properties. The glass transition temperatures of oligomers measured by differential scanning calorimetry were in the range of 264-337C, and the temperature of 5% weight loss was higher than 505C. The cured films also demonstrated good mechanical properties with tensile strength and modulus greater than 52 MPa and 2.9 GPa, respectively.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H2966O – PubChem

Related Products of 201809-69-0, 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, 201809-69-0, molcular formula is C8H5BrO2, introducing its new discovery.

The invention provides novel compounds having the general Formula (I), wherein R1, R2, R3, R4 R5, R6, R7, R8 R9, R10, R11, R12, A1, A2 and n are as described herein, compositions including the compounds and methods of using the compounds.

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 201809-69-0 is helpful to your research. Related Products of 201809-69-0

Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H3571O – PubChem

Chemistry is traditionally divided into organic and inorganic chemistry. Product Details of 69604-00-8, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 69604-00-8

The invention relates to a […] intermediate synthesis method, in order to 6 – nitro coumarin as the starting the raw materials, through ring-opening, the ring in the molecule, esterification, reduction, paipai qin link other steps, to obtain key […] middle style I compound 5 – (1 – piperazinyl) – 2 – benzofuran – 2 – carboxylic acid ethyl ester. The invention synthetic route is simple, the target product yield is relatively high, and is suitable for industrial scale production. (by machine translation)

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H3851O – PubChem

Related Products of 652-12-0, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.652-12-0, Name is Tetrafluorophthalic anhydride, molecular formula is C8F4O3. In a Article，once mentioned of 652-12-0

N-Phthaloyl 3-amino-3-arylpropionic acid analogs of thalidomide that are potent inhibitors of tumor necrosis factor-alpha are reported. These compounds were found to be potent inhibitors of phosphodiesterase 4.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H3744O – PubChem

Related Products of 496-41-3, 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.496-41-3, Name is Benzofuran-2-carboxylic acid, molecular formula is C9H6O3. In a article，once mentioned of 496-41-3

The Pd catalysed enantioselective hydrogenation of activated C=C bond containing compounds, unsaturated ketones, pyrones and carboxylic acids is discussed, focusing on new substrates, chiral modifiers and their mode of action.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H1969O – 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, 72985-23-0, name is 6-Methylisobenzofuran-1(3H)-one, introducing its new discovery. Product Details of 72985-23-0

Herbicidal 3- and/or 5-halogenomethyl-pyrid-2-yloxyphenoxy compounds and processes for making and using the same. Intermediates for making these compounds and their preparation are also disclosed. Thus, for example, 2-chloro-5-trichloromethylpyridine is prepared by a liquid phase chlorination of 3-methylpyridine under the influence of ultra violet light.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H1338O – PubChem

Electric Literature of 4265-25-2, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.4265-25-2, Name is 2-Methylbenzofuran, molecular formula is C9H8O. In a Article，once mentioned of 4265-25-2

N-acylimminium ions are an important class of synthetic intermediates to produce diverse products upon treatment with different nucleophiles. Most of the reported catalytic protocol involved moisture-sensitive Lewis acids or transition metal. Herein, we reported an organocatalytic version by using halogen-bond catalyst as mild Lewis acid through anion-abstraction strategy. A preliminary result of enantioselective version by employing a chiral BINOL-phosphate anion has also been demonstrated.

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H75O – PubChem

In heterogeneous catalysis, the catalyst is in a different phase from the reactants. Recommanded Product: N-(1,3-Dioxo-1,3-dihydroisobenzofuran-4-yl)acetamide, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 6296-53-3, name is N-(1,3-Dioxo-1,3-dihydroisobenzofuran-4-yl)acetamide. In an article，Which mentioned a new discovery about 6296-53-3

The present invention provides a method for preparing apps is special and intermediates thereof. The present invention provides a kind of type III intermediates apps is special shown, and the compound of the formula III are sequentially and methyl sulfonate reaction, reductive amination, and the asymmetric acid salt forming, and 3-acetyl amino group is obtained by reacting phthalic anhydride apps is special. The present invention provides synthetic apps is special method can avoid the use of n-butyl lithium-hexane solution, not only reduce the production cost, and has the advantage of convenient operation process, and a large extent in improving the safety of the industrial production, and more suitable commercial continuous production. Of this invention offers 3-acetamino method for preparing phthalic anhydride to improve the yield of 81%, higher yield, is extremely suitable for industrial production of apps is special. (by machine translation)

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Reference：
Benzofuran – Wikipedia,
Benzofuran | C8H3475O – PubChem