Month: September 2021

Chemical engineers work across a number of sectors, processes differ within each of these areas, but chemistry and chemical engineering roles are found throughout, and are directly involved in the manufacturing process of chemical products and materials. Category: Benzisoxazole.

A series of isoindoline analogues with either an indazole (HMR 2934, HMR 2651) or benzisoxazole (HMR 2543) appendage were prepared for the proposed treatment of psychiatric disorders such as obsessive compulsive disorder and attention deficit disorder. The isoindoline compounds were prepared by reduction of the corresponding phthalimides with LiAlH4. One compound was not chiral, and the other two required an enantioselective synthesis. The key step for these optically active analogues involved the coupling by an S(N)2 process of either a piperazynyl intermediate or a piperdinyl intermediate with methyl 3-benzyloxy-2-trifluoromethansulfonatopropionate. The products for these two analogues had >98% ee. Process improvements led to the multi-kilogram syntheses of each of these compounds.

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

Chemistry, like all the natural sciences, begins with the direct observation of nature— in this case, of matter. 427-49-6, Name is alpha-Cyclopentylmandelic Acid, SMILES is O=C(O)C(O)(C1CCCC1)C2=CC=CC=C2, in an article , author is Murai, Kenichi, once mentioned of 427-49-6, SDS of cas: 427-49-6.

A facile preparation of 3-acyl-substituted isoxazolines, benzisoxazoles, and isoxazoles from the corresponding 3-carboxylate esters is described. The process, involving reaction of the ester derivative of 3-carboxylic acid substituted heterocycles with Grignard or alkynyl lithium reagents, leads to direct generation of the corresponding 3-acyl heterocycle. The presence of alpha-imino ester moieties in the heterocyclic substrates for the reactions is thought to be a key feature governing the nature of these transformations. The synthetic utility of the new methodology is demonstrated by its application in a two-step route for the preparation of novel linked bis-heterocycles. (C) 2012 Elsevier Ltd. All rights reserved.

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

New discoveries in chemical research and development in 2021.Application In Synthesis of Lithiumacetate, 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. 546-89-4, Name is Lithiumacetate, molecular formula is C2H3LiO2. In an article, author is Orlov, V. Yu.,once mentioned of 546-89-4.

Reaction of 3-aryl-2,1-benzisoxazoles with concentrated nitric acid in chloroform in one stage led to their conversion into acridinone nitro derivatives.

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

You could be based in a pharmaceutical company, working on trialing new drugs; or in a public-sector research center, helping to ensure national healthcare provision keeps pace with new discoveries. Application of 503-74-2.

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.

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

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. 546-89-4, Name is Lithiumacetate, SMILES is CC([O-])=O.[Li+], in an article , author is Nenz, E, once mentioned of 546-89-4, Electric Literature of 546-89-4.

Interspecific somatic hybrid plants were obtained by symmetrical electrofusion of mesophyll protoplasts of Medicago sativa with callus protoplasts of Medicago arborea. Somatic hybrid calli were picked manually from semi-solid culture medium after they were identified by their dual color in fluorescent light. Twelve putative hybrid calli were selected and one of them regenerated plants. The morphogenesis of the somatic hybrid calli was induced by the synthetic growth regulator 1,2 benzisoxazole-3-acetic acid. Somatic hybrid plants showed intensive genome rearrangements, as evidenced by isozyme and RFLP analysis. The morphology of somatic hybrid plants was in general intermediate between the parents. The production of hybrids by protoplast fusion between sexually incompatible Medicago species is related to the in vitro responsiveness of the parental protoplasts. The possibility of using somatic hybrid plants in alfalfa breeding is discussed.

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

New Advances in Chemical Research in 2021. Irreversible inhibitors are therefore the equivalent of poisons in heterogeneous catalysis. 127-17-3, Name is 2-Oxopropanoic acid, molecular formula is C3H4O3, Computed Properties of https://www.ambeed.com/products/127-17-3.html, belongs to benzisoxazole compound, is a common compound. In a patnet, author is HRIB, NJ, once mentioned the new application about 127-17-3.

A series of benzisoxazole- and benzisothiazole-3-carboxamides has been prepared and tested for potential antipsychotic activity. In general, the compounds showed an affinity for dopamine D-2 and serotonin 5HT(2A) and 5HT(1A) receptors. Several Members of this series have demonstrated activity in animal models predictive of potential antipsychotic activity. In addition, compounds 18, 19, 22, 27, 28, 43, and 44 have also shown a potential for reduced EPS liability as suggested by the ratio of activity seen in mesolimbic-mediated vs nigrostriatal-mediated behavioral assays.

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

Chemistry involves the study of all things chemical – chemical processes, chemical compositions and chemical manipulation – in order to better understand the way in which materials are structured, how they change and how they react in certain situations, Product Details of 1191-25-9.

Under electron ionization conditions, the ortho-substituted Schiff bases N-benzylidene-o-toluidine (1a), N-(o-methylbenzylidene)aniline (1b), N-salicylideneaniline (1c) and N-(o-methoxybenzylidene)aniline (1d) give fragment ions which have been shown by collision-activated mass-analysed ion kinetic energy spectra to have the structure of the protonated molecular ions of indole (2), benzofuran (3), and 1,2-benzisoxazole (4). The molecular ion of N-(o-methylbenzylidene)-o-toluidine (1f) gives as fragment ions not only the protonated molecular ion (2) of indole and the tropylium ion but also the molecular ion of anthracene. Attempts to find supporting evidence for a mechanism for this rearrangement by deuterium labelling of a methyl group in (1b), such as (1g), have been unsuccessful.

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

Chemical Research Letters, May 2021. In classical electrochemical theory, both the electron transfer rate and the adsorption of reactants at the electrode control the electrochemical reaction. In an article, author is BRAHMESHWARI, G, once mentioned the application of 505-48-6, Name is Octanedioic acid, molecular formula is C8H14O4, molecular weight is 174.1944, MDL number is MFCD00004428, category is benzisoxazole. Now introduce a scientific discovery about this category, HPLC of Formula: https://www.ambeed.com/products/505-48-6.html.

3-Aryl-6-hydroxy-5-undecyl-1,2-benzisoxazole-4,7-diones (IIIa-e) have been obtained by the reaction of embelin (I) with aryl nitrile oxides (IIa-e). Their structures have been confirmed by converting them into the corresponding 3-aryl-5-undecylisoxazole[5,4-a] phenazin-4(6H)-ones (IVa-e) and 6-(acetyloxy)-3-aryl-5-undecyl-1,2-benzoisoxazole-4,7-diones (Va-e). These compounds are found to be active against fungi Fusarium-oxysporum and Curvularia lunata.

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

Healthcare careers for chemists are once again largely based in laboratories, although increasingly there is opportunity to work at the point of care, helping with patient investigation. 83249-10-9, Name is 3-(Methoxycarbonyl)bicyclo[1.1.1]pentane-1-carboxylic acid, SMILES is O=C(C1(C2)CC2(C(OC)=O)C1)O, in an article , author is Kociolek, Martin G., once mentioned of 83249-10-9, COA of Formula: https://www.ambeed.com/products/83249-10-9.html.

A series of 2-hydroxyaryl ketoximes were converted to the corresponding 1,2-benzisoxazole 2-oxides by treatment with iodobenzene diacetate (in acetic acid or methanol) or N-chlorosuccinimide in water. Both methods gave moderate to excellent yields for a variety of substituted oximes under mild conditions within short reaction times. The latter method has the advantages of an aqueous solvent and lack of halogenated organic by-products.

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

New Advances in Chemical Research in 2021. Irreversible inhibitors are therefore the equivalent of poisons in heterogeneous catalysis. 123-76-2, Name is 4-Oxopentanoic acid, molecular formula is C5H8O3, Product Details of 123-76-2, belongs to benzisoxazole compound, is a common compound. In a patnet, author is DUTTA, DK, once mentioned the new application about 123-76-2.

ortho-Amino and N-alkylaminobenzophenones 3 have been prepared in good yields by the reductive cleavage of 2, 1-benzisoxazole and its salts with Zn-AlCl3.6H2O/THF system.

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