Category: Benzisoxazole

Electric Literature of 868-14-4, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 868-14-4, Name is Potassium hydrogen tartrate, SMILES is [O-]C(C(C(C(O)=O)O)O)=O.[K+], belongs to Benzisoxazole compound. In a article, author is Chauhan, Jay, introduce new discover of the category.

One-pot synthesis of 2,1-benzisoxazoles (anthranils) by a stannous chloride-mediated tandem reduction-heterocyclization of 2-nitroacylbenzenes under neutral conditions

Classically, 2,1-benzisoxazoles (anthranils) are prepared from 2-nitroacylbenzenes by a reductive heterocyclization reaction with Sn or SnCl2 concentrated HCl. Acid sensitive functionalities are expected to be incompatible with these conditions; milder approaches to the synthesis of 2,1-benzisoxazoles would be welcomed. We demonstrate that SnCl2 center dot 2H(2)O in a 1:1 mixture of EtOAc/MeOH is capable of mediating the tandem reduction-heterocyclization of a variety of 2-nitroacylbenzenes to their corresponding 2,1-benzisoxazoles in good to excellent yields under essentially neutral conditions. Importantly, several commonly used acid-labile protecting groups, including Boc carbamate, tert-butyl ether, and tert-butyl ester, proved orthogonal to these reaction conditions. (C) 2012 Elsevier Ltd. All rights reserved.

Electric Literature of 868-14-4, 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 868-14-4 is helpful to your research.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 90-27-7, Name is 2-Phenylbutanoic acid, SMILES is CCC(C1=CC=CC=C1)C(O)=O, in an article , author is SATO, H, once mentioned of 90-27-7, Product Details of 90-27-7.

STUDIES ON URICOSURIC DIURETICS .3. SUBSTITUTED 1,3-DIOXOLO[4,5-F]-1,2-BENZISOXAZOLE-6-CARBOXYLIC ACIDS AND 1,3-DIOXOLO[4,5-G]-1,2-BENZISOXAZOLE-7-CARBOXYLIC ACIDS

A series of substituted 1,3-dioxolo[4,5-f]-1,2-benzisoxazole-6-carboxylic acids 13 and 1,3-dioxolo[4,5-g]-1,2-benzisoxazole-7-carboxylic acids 14 were synthesized and evaluated for diuretic and uricosuric activities in rats. Most of the benzisoxazole derivatives 13 and 14 showed potent diuretic activities. Moderate uricosuric activities were also found in 14a, 14b, and 14f.

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Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Quality Control of 2-Oxobutanoic acid, 600-18-0, Name is 2-Oxobutanoic acid, molecular formula is C4H6O3, belongs to Benzisoxazole compound. In a document, author is Whitcombe, MJ, introduce the new discover.

Imprinted polymers: Versatile new tools in synthesis

The use of molecularly imprinted polymers in synthetic organic chemistry is reviewed. These materials are prepared in the presence of a template for which they carry a functional and stereochemical memory and can be likened to artificial antibodies or enzymes. Their unique properties have been exploited by the use of imprinted polymers as stereo- and regio-selective solid supports in condensation reactions and hydride reduction, as protecting groups in the acylation of polyols and as catalysts to enhance the rates of reactions as diverse a Diels-Alder reaction, an Aldol condensation, beta-elimination, the benzisoxazole isomerization, transesterification and ester hydrolyses.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 600-18-0. Quality Control of 2-Oxobutanoic acid.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

75-98-9, Name is Pivalic acid, molecular formula is C5H10O2, belongs to Benzisoxazole compound, is a common compound. In a patnet, author is Kociolek, Martin, once mentioned the new application about 75-98-9, Computed Properties of C5H10O2.

Electrochemical reduction of 3-phenyl-1, 2-benzisoxazole 2-oxide on boron-doped diamond

The bioreduction of N-oxide compounds is the basis for the mode of action of a number of biologically active molecules. These compounds are thought to act by forming a reactive oxygen species through an intracellular reduction and subsequent redox cycling process within the organism. With these results in mind, the preliminary investigation into the electrochemical reduction of the benzisoxazole 2-oxide ring system was undertaken, with the thought that this class of compounds would reduce in a similar fashion to other N-oxide heterocycles. The electrochemical reduction of 3-phenyl-1,2-benzisoxazole 2-oxide on boron-doped diamond was studied using cyclic and square wave voltammetry as well as controlled potential electrolysis and HPLC for qualitative identification of the reaction products. It was found that the reduction proceeded with an initial quasi-reversible one-electron reduction followed by the very fast cleavage of either the endocyclic or exocyclic N-O bond. Subsequent electron transfer and protonation resulted in an overall two-electron reduction and formation of the 2-hydroxyaryl oxime and benzisoxazole. These results are analogous to those observed in the electrochemical reduction of other heterocyclic N-oxides albeit the reduction of the benzisoxazole N-oxides takes place at a more negative potential. However, these encouraging results warrant further investigation into the reduction potential of substituted benzisoxazole N-oxides as well as to elucidate and characterize the nature of the intermediate species involved. Copyright (c) 2014 John Wiley & Sons, Ltd.

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Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 629-25-4, Name is Sodium Laurate. In a document, author is Reddy, C. B. Rajashekar, introducing its new discovery. Computed Properties of C12H23NaO2.

An improved, practical and efficient method for the synthesis of novel N-chloro derivatives using calcium hypochlorite

The developed method was employed in the synthesis of medicinally important compounds and intermediates in the organic synthesis. Herein we report a variety of novel N-chloro derivatives of benzisoxazole, benzimidazoles and several other N-chloro derivatives using 1.2 equivalents of calcium hypochlorite. The process does not require any additives like acids or bases and produced moderate to excellent yields of desired products under mild conditions.

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Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

In an article, author is Murata, M., once mentioned the application of 113-24-6, Name is Sodium pyruvate, molecular formula is C3H3NaO3, molecular weight is 110.0439, MDL number is MFCD00002586, category is Benzisoxazole. Now introduce a scientific discovery about this category, COA of Formula: C3H3NaO3.

ZONISAMIDE: A NEW DRUG FOR PARKINSON’S DISEASE

Zonisamide, a benzisoxazole derivative, is an antiepileptic drug with a long half-life. Three nationwide, double-blind, placebo-controlled studies carried out in Japan prompted the approval of zonisamide as an antiparkinsonian agent in early 2009. The addition of zonisamide at 25-50 mg/day to currently used antiparkinsonian drugs significantly improved cardinal symptoms in patients with advanced Parkinson’s disease. The effects were maintained over more than 1 year even in patients with advanced disease. Zonisamide has multiple modes of action, and its effects on Parkinson’s disease include activation of dopamine synthesis, inhibition of monoamine oxidase, inhibition of T-type calcium channels and inhibition of an indirect pathway in the basal ganglia through the delta opioid receptor Furthermore, zonisamide exhibits neuroprotective effects in animal models of Parkinson’s disease. It strongly inhibits quinoprotein formation and markedly increases glutathione S-transferase levels in the striatum by enhancing the astroglial cysteine transport system and/or astroglial proliferation via S100 beta production and secretion.

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Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Reference of 98-89-5, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 98-89-5, Name is Cyclohexanecarboxylic acid, SMILES is O=C(C1CCCCC1)O, belongs to Benzisoxazole compound. In a article, author is Shimizu, M, introduce new discover of the category.

Research and development of zonisamide, a new type of antiepileptic drug

Zonisamide (1,2-benzisoxazole-3-methanesulfonamide, AD-810) is a broad spectrum antiepileptic drug which has been launched in Japan and South Korea. It lacks the ureide structure included in most of the existing antiepileptic drugs. Zonisamide was synthesized by the sulfonation and the successive amination of 1,2-benzisoxazole-3-acetic acid in a very poor yield. After several efforts to optimaize the compound, zonisamide was selected based on the balance of the efficacy and safety. The yield was greatly improved by the development of new synthetic routes. Zonisamide suppressed maximal electroshock seizures in mice, rats, rabbits and dogs. Its therapeutic plasma concentration range between anticonvulsant and neurotoxic effects was much wider than that of the existing antiepileptic drugs. In electroencephalographic studies on animal models of epilepsy, zonisamide, like phenytoin and carbamazepine, restricted the spread or propagation of seizures and, like sodium valproate, it suppressed the epileptogenic focus activity. Zonisamide was effective in several kindling models. In clinical studies, zonisamide exerted the efficacy against partial seizures (simple, complex, secondarily generalized seizures and some generalized seizures (tonic-clonic, tonic, atypical absence seizures) that were comparable to that of carbamazepine and sodium valproate, respectively. Zonisamide was also effective in monotherapy. The adverse effects related with zonisamide were mainly drowsiness, ataxia, loss of appetite and gastrointestinal symptoms. Serious adverse effects which may be life-threatening have not been reported.

Reference of 98-89-5, The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 98-89-5 is helpful to your research.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, HPLC of Formula: C6H5Na3O768-04-2, Name is Sodium citrate, SMILES is O=C(CC(C([O-])=O)(O)CC([O-])=O)[O-].[Na+].[Na+].[Na+], belongs to Benzisoxazole compound. In a article, author is WANG, GJ, introduce new discover of the category.

SYNTHESIS AND CATALYTIC PROPERTIES OF NON-CROSS-LINKED AND CROSS-LINKED POLY(ALKYLMETHYLDIALLYLAMMONIUM BROMIDES) HAVING DECYL, OCTYL, AND HEXYL SIDE-CHAINS

A family of non-cross-linked and cross-linked copolymers containing decyl, octyl, and hexyl groups as side chains ((CL)-CopolC1-10, (CL)-CopolC1-8, and (CL)-CopolC1-6, respectively) were synthesized by radical-initiated cyclocopolymerization of alkylmethyldiallylammonium bromide monomers without and with a small amount of N,N’-methylenebisacrylamide as a cross-linking agent in aqueous solution. Their H-1 NMR and IR spectra indicated the presence of five-membered rings cross-linked without and with N,N’-methylenebisacrylamide in the macromolecules. Viscosity measurements showed that the cross-linked copolymers exhibit a larger reduced viscosity in aqueous solution with increasing cross-linking agent content in the copolymers. For(CL)-CopolC1-10, the conformational transition to compact coils was indicated by changes of the reduced viscosity in dilute aqueous solutions. At higher concentrations, intermolecular aggregation was also revealed and increased with increasing the percentage of cross-linking for CL-CopolC1-10. (CL)-CopolC1-8 and (CL)-CopolC1-6 showed extented molecular dimensions in aqueous solution. The hydrophobic microdomains of the non-cross-linked and cross-linked copolymers were probed by hypsochromic shifts of the long-wavelength absorption band of Methyl Orange as a solvatochromic agent, noncovalently bound to the macromolecule. The unimolecular decarboxylation of 6-nitrobenzisox-azole-3-carboxylate (6-NBIC), catalyzed by these copolymers in aqueous solution, was used as a model reaction to study the influence of polysoap microenviroment on reactivity. Depending on the hydrophobic group content, (CL)-CopolC1-10 led to a remarkably large rate enhancement, whereas (CL)-CopolC1-8 induced only modest rate acceleration for the decarboxylation of 6-NBIC. A small rate enhancement was observed in the presence of(CL)-CopolC1-6. The decarboxylation rate is also sensitive to changes of the percentage of cross-linking in the macromolecules. A maximum in rate constant was found at about 0.2% (w/w) cross-linking agent for CL-CopolC1-10 and at about 0.4% (w/w) for CL-CopolC1-8 in plots of the rate constant vs cross-linking agent content.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 68-04-2. HPLC of Formula: C6H5Na3O7.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Electric Literature of 532-32-1, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 532-32-1, Name is Sodium benzoate, SMILES is O=C([O-])C1=CC=CC=C1.[Na+], belongs to Benzisoxazole compound. In a article, author is Ward, Michael D., introduce new discover of the category.

Guest Binding and Catalysis in the Cavity of a Cubic Coordination Cage

An M8L12 coordination cage, which is water-soluble but has a hydrophobic interior cavity, is an effective host for a wide range of small organic guests; the factors responsible for guest binding have been investigated in detail. Benzisoxazole is a competent guest and, when bound, undergoes the Kemp elimination reaction with a rate acceleration of up to 2 x 10(5) times compared to the reaction of unbound benzisoxazole; the reasons for this have been analyzed.

Electric Literature of 532-32-1, 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 532-32-1 is helpful to your research.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 98-89-5, Name is Cyclohexanecarboxylic acid, SMILES is O=C(C1CCCCC1)O, belongs to Benzisoxazole compound. In a document, author is WANG, GJ, introduce the new discover, Name: Cyclohexanecarboxylic acid.

SYNTHESIS OF HYDROPHOBICALLY AND ELECTROSTATICALLY MODIFIED POLYACRYLAMIDES AND THEIR CATALYTIC EFFECTS ON THE UNIMOLECULAR DECARBOXYLATION OF 6-NITROBENZISOXAZOLE-3-CARBOXYLATE ANION

A series of hydrophobically and electrostatically modified polyacrylamides (Copol(AM-C12)) has been synthesized by radical-initiated copolymerization of acrylamide with n-dodecylmethyldiallylammonium bromide as the hydrophobe in aqueous solution using ammonium persulfate as the initiator. The formation of hydrophobic microdomains of the copolymers was revealed by large hypsochromic shifts of the long-wavelength absorption band of the solvatochromic probe Methyl Orange, noncovalently bound to the macromolecule. It was found that the microdomains formed by these copolymers in aqueous solution are more hydrophobic than those of the cationic polysoaps poly(alkylmethyldiallylammonium halides) containing the same n-dodecyl groups as the side chains as a result of the reduced electrostatic repulsions at the periphery of the microdomains. The reduced cationic character of the copolymers Copol(AM-C12) most likely also accounts for the observation that the anionic dye Methyl Orange does not; induce microdomain formation in aqueous solution. The effect of the hydrophobically and electrostatically modified polyacrylamides on the unimolecular decarboxylation of 6-nitrobenzisoxazole-3-carboxylate anion (6-NBIC) has been investigated in aqueous solutions at pH 11.3 and 30 degrees C. It is suggested that the relatively modest catalytic effects induced by Copol(AM-C12) should be ascribed to hydrogen-bond stabilization of the initial state by NH groups in the macromolecules. The decarboxylation rates of 6-NBIC at binding sites in hydrophobic microdomains increase with increasing n-dodecyl group content in the copolymers.

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 98-89-5 is helpful to your research. Name: Cyclohexanecarboxylic acid.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics