Heterocyclic Building Blocks-Benzisoxazole

Reference of cis-Cyclohexane-1,2-dicarboxylic acid. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: cis-Cyclohexane-1,2-dicarboxylic acid, is researched, Molecular C8H12O4, CAS is 610-09-3, about Solvolytic reactions of cyclic anhydrides in anhydrous acetic acid. Author is Haddadin, M. J.; Higuchi, T.; Stella, V..

The reversible reactions of several cyclic anhydrides with HOAc to form Ac2O and the corresponding dicarboxylic acid, catalyzed by HClO4 at 25°, were studied. The equilibrium constants calculated from spectral data, were 4.85 × 10-4, 1.08 × 10-1, and 4.6 × 10-1 M for succinic, trans-1,2-cyclohexanedicarboxyllic, and glutaric anhydrides, resp. Maleic, phthalic, and cis-1,2-cyclohexanedicarboxylic anhydrides did not undergo any detectable reaction with HOAc under these conditions, suggesting still higher stability. The reverse rate constants were relatively independent of the structure of the attacking diacid, while the forward rate constants were found to parallel the equilibrium constants The rate-determining step for the forward reaction appears to be the breakdown of the tetrahedral intermediate formed by the attack of HOAc mol. on the protonated cyclic anhydride.

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Kannan, Damodharan; Naveen, Shivalingegowda; Jagadeesan, Ganapathy; Lokanath, Nerattur Krishnappagowda; Thennarasu, Sathiah published an article about the compound: 2-Furoic hydrazide( cas:3326-71-4,SMILESS:O=C(C1=CC=CO1)NN ).Quality Control of 2-Furoic hydrazide. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:3326-71-4) through the article.

A series of aryl/indolyl substituted 4, 5-dihydro-1H-pyrazole derivatives I [R = 2-benzyloxybenzene, 4-MeSC6H4, 4-ClC6H4, 1-methyl-indolyl; R1 = Ph, 4-MeOC6H4, 4-FC6H4, etc.; Ar = 2-furyl, 4-pyridyl, 4-ClC6H4, etc.] was synthesized via a domino method based on Michael addition mediated cyclization of chalcones and aryl hydrazines. The chalcones were prepared by Wittig reaction in which substituted aromatic aldehydes were treated with stable ylides under eco-friendly ultrasonic cavitation.

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Journal of Molecular Structure called Mononuclear and binuclear dioxidomolybdenum(VI) complexes of ONO appended aroylhydrazone: Crystal structures, interaction energy calculation and cytotoxicity, Author is Kuriakose, Daly; Kurup, M. R. Prathapachandra, which mentions a compound: 3326-71-4, SMILESS is O=C(C1=CC=CO1)NN, Molecular C5H6N2O2, Computed Properties of C5H6N2O2.

Mono- and binuclear cis-MoO2 complexes (1-3) [MoO2(ISF)D] (D = H2O 1, DMSO 2 and 4,4′-bipyridine 3; ISF = 3,5-diiodosalicyaldehyde-2-furoichydrazone) were synthesized and fully characterized by different physicochem. methods. The mol. structures were confirmed unambiguously by single crystal x-ray diffraction studies. The octahedral geometry around the Mo(VI) central atom is satisfied by O, N, O donor atoms of dideprotonated dianionic hydrazone moiety, two oxido oxygens and O/N atoms of the coordinated solvent mols. The asym. unit of complexes 1 and 2 contains one mol. whereas complex 3 contains only half of the mol. The 4,4′-bipyridine mol. acts as a linker that links the two asym. MoO2D moieties to form the binuclear dioxidomolybdenum(VI) in complex 3 with Mo···Mo nonbonding distance of 12.01(10) Å. The relevance of H bonding and nonbonding interactions in the construction of supramol. architectures were studied. The upshots of single crystal studies were reproduced with the aid Hirshfeld surface studies. The pre-eminence of dispersion energy component over other components was established by interaction energy calculations and the energy framework anal. The average interaction energy values for complexes 2 and 3 are -282.3 and -228.3 kJ mol-1, resp. Also the in vitro cytotoxicity of all the synthesized compounds was evaluated against lymphoma ascites cell line.

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

HPLC of Formula: 3326-71-4. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 2-Furoic hydrazide, is researched, Molecular C5H6N2O2, CAS is 3326-71-4, about Catalytic synthesis, ADMET, QSAR and molecular modeling studies of novel chalcone derivatives as highly potent antioxidant agents. Author is Prabakaran, G.; Manivarman, S.; Bharanidharan, M..

A series of (E)-3-(3-(5-chlorothiophen-2-yl)-1-(furan-2-carbonyl)-2,3-dihydro-1H-pyrazol-4-yl)-1-(substituted)prop-2-en-1-one derivatives 5a-c was synthesized from the reaction of 3-(5-chlorothiophen-2-yl)-1-(furan-2-carbonyl)-2,3-dihydro-1H-pyrazole-4-carbaldehyde (2) with various substituted acetophenes by the use of TiO2-ZnS in ethanol under reflux conditions. All are structurally supported by IR spectrum and the basic testing and screening, and find that compounds 5a are potential antioxidants for their in vitro-antioxidant activity against DPPH. The results in vitro were compared with the results of the mol. docking, ADMET, QSAR and bioactivity study and it was found that the results were observed in good correlations with in vitro anti-oxidant results in silicon binding affinities. The anal. of mol. dockings revealed the interactions between the synthesized ligands and protein tyrosine kinase (2HCK) amino acid residues and has a strong hydrogen connexion to this enzyme.

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Zheng, Yan-Zhen; Xue, Wei; Tong, Ming-Liang; Chen, Xiao-Ming; Zheng, Shao-Liang published an article about the compound: cis-Cyclohexane-1,2-dicarboxylic acid( cas:610-09-3,SMILESS:O=C([C@H]1[C@@H](C(O)=O)CCCC1)O ).Synthetic Route of C8H12O4. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:610-09-3) through the article.

Five new metal-carboxylate chain-based laminated compounds, namely, ∞2[FeII(e,e-trans-1,2-chdc)] (3) (1,2-chdc = cyclohexane-1,2-dicarboxylate), ∞2[NiII(μ-OH2)(e,a-cis-1,2-chdc)] (4), ∞2[CoII(μ-OH2)(1,2-chedc)] (5) (1,2-chedc = cyclohex-1-ene-1,2-dicarboxylate), ∞2[CoII5(μ3-OH)2(OH2)2(1,2-chedc)4] (6), and ∞2[CoII(4-Me-1,2-chdc)] (7) (4-Me-1,2-chdc = trans-4-methylcyclohexane-1,2-dicarboxylate) were hydrothermally synthesized. In these series of magnetic chain-based compounds, 3 and 7 have the same dimeric paddle-wheel M(II)-carboxylate chain as the previously reported compound, ∞2[CoII(trans-1,2-chdc)] (2). However, compound 3 does not behave as a single-chain magnet (SCM) but simply an alternating ferro-antiferro magnetic chain. Compound 4 has the cis conformation of 1,2-chdc ligand, which leads to a uniform aqua-carboxylate-bridged Ni(II) chain. Such a Ni-O chain exhibits strong antiferromagnetic interactions, leading to a diamagnetic ground state. Compound 5 features a corner-sharing triangular chain, or Δ-chain, which is part of a Kagome lattice. However, 5 does not exhibit a spin-frustrated effect but simply spin competition. Compound 6 has a unique pentanuclear CoII cluster, which is further connected by the syn-anti carboxylate into a chain structure. Compound 6 exhibits antiferromagnetic interactions among the Co(II) ions, and no SCM behavior is observed These results might indicate that the dimeric paddle-wheel Co(II)-carboxylate chain is essential in obtaining SCM behavior in this family of compounds Although 2 and 7 have very similar SCM behavior, a.c. magnetic studies show that 7 has a higher energy barrier than that of 2. Such behavior is probably caused by the larger anisotropic energy barrier in 7.

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Application In Synthesis of 2-Furoic hydrazide. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 2-Furoic hydrazide, is researched, Molecular C5H6N2O2, CAS is 3326-71-4, about ONO pincer palladium (II) complexes featuring furoylhydrazone ligands: Synthesis, characterization and catalytic activity towards Suzuki-Miyaura coupling reaction.

Four new palladium pincer complexes I (R = H, 3-OMe, 3-OEt, 5-Cl) incorporating ONO type furoylhydrazone ligands have been prepared in good yields. These palladium complexes were structurally characterized by elemental anal., IR, 1H- and 13C-NMR spectra. X-ray single crystal analyses of Pd1-Pd4 revealed that the metal center adopted a slightly distorted square planar geometry in which the hydrazone bound the metal ion via the phenolic-O, azomethine-N and imidolate-O atoms. Using these ONO pincer complexes as catalyst, excellent yields of biaryls could be obtained for coupling of arylboronic acids with aryl bromides at a low catalyst loading (0.01 mol%).

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Safety of cis-Cyclohexane-1,2-dicarboxylic acid. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: cis-Cyclohexane-1,2-dicarboxylic acid, is researched, Molecular C8H12O4, CAS is 610-09-3, about Stereochemistry of cyclic dicarboxylic acids studies by potentiometric titration. IV. Effect of the composition and dielectric constant of acetone-water solutions on the ionization constants of cis- and trans-1,2-dicarboxylic acids. Author is Salakhov, M. S.; Israfilov, A. I.; Shamilov, T. O..

Ionization constants of cis and trans isomers of 1,2-cyclohexanedicarboxylic acid, 4-cyclohexene-1,2-dicarboxylic acid, 1-methyl-4-cyclohexene-1,2-dicarboxylic acid, 5-norbornene-2,3-dicarboxylic acid, and 1,2,3,4,9,9-hexachloro-1,4,4a,5,6,7,8,8a-octahydro-1,4-methanonaphthalene-2,3-dicarboxylic acid, cis-3-methyl-4-cyclohexene-1,2-dicarboxylic acid, and cis-4,5-dimethyl-4-cyclohexene-1,2-dicarboxylic acid were determined and correlated with configuration and solvent composition

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Product Details of 3326-71-4. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 2-Furoic hydrazide, is researched, Molecular C5H6N2O2, CAS is 3326-71-4, about Synthesis of Acyl Phosphoramidates Employing a Modified Staudinger Reaction. Author is Currie, Iain; Sleebs, Brad E..

A 1-step synthesis of acyl phosphoramidates from a variety of functionalized acyl azides was developed employing trimethylsilyl chloride as an activating agent in a modified Staudinger reaction. The methodol. was further adapted to include the in situ generation of the acyl azides from a diverse selection of carboxylic acids and hydrazide starting synthons. The reaction scope was extended to include the synthesis of imidodiphosphates and the natural product Microcin C.

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Recommanded Product: 2-Furoic hydrazide. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 2-Furoic hydrazide, is researched, Molecular C5H6N2O2, CAS is 3326-71-4, about A novel turn on fluorescent probe for the determination of Al3+ and Zn2+ ions and its cells applications. Author is Aydin, Duygu.

Early detection of probes is very important for limiting toxic effects of various transition metal ions for example aluminum and zinc. Monitoring of these metal ions can be challenging via conventional methods since they are high cost instrumentations, time consuming and so on. The authors report facile preparation of a fluorescence probe containing biphenyl groups that effectively selective and superb sensitivity towards aluminum(III) and zinc(II) in neutral solutions without interference from each other and other ions. In neutral pH value, the probe FOB displayed the OFF-ON fluorescence enhancement at 464 nm and 512 nm toward aluminum(III) and zinc(II), resp. The detection limit values of FOB for Al3+ and Zn2+ in neutral solutions were 1.27 and 1.02 nM, resp. and these values were significantly lower than permitted Al3+ and Zn2+ concentrations in drinking water determined by the World Health Organization (WHO) and European Water Quality. Also, fabricated cyano-biphenyl based probe is effective for sensing for aluminum(III) and zinc(II) in living human colon cancer cells even when employed at low concentrations (1.0μM). Overall, this work allows the authors to obtain a great potential to be applied to detect Al3+ and Zn2+.

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Zhang, Yinjun; Cheng, Feifei; Yan, Hongde; Zheng, Jianyong; Wang, Zhao published the article 《The enzymatic resolution of 1-(4-chlorophenyl)ethylamine by Novozym 435 to prepare a novel triazolopyrimidine herbicide》. Keywords: Novozym 435 triazolopyrimidine herbicide; 1-(4-chlorophenyl)ethylamine; Novozym 435; amidation; lipase; resolution.They researched the compound: Methyl tetrahydrofuran-2-carboxylate( cas:37443-42-8 ).Recommanded Product: Methyl tetrahydrofuran-2-carboxylate. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:37443-42-8) here.

The kinetic resolution of (R,S)-1-(4-chlorophenyl)ethylamine was accomplished using a com. lipase from Candida antarctica (Novozym 435). The performance of this lipase was investigated for the enantioselective amidation of (R,S)-1-(4-chlorophenyl)ethylamine, leaving the target product (S)-1-(4-chlorophenyl)ethylamine in its unreacted form. The effects of various types of solvents and an acyl donor, the molar ratio of the substrate to the acyl donor, and the reaction temperature were studied. The optimum reaction conditions were found to result in amidation with Me 2-tetrahydrofuroate at 40°C in Me tert-Bu ether, with a substrate/acyl donor molar ratio of 1:2.4. The conversion rate of (R,S)-1-(4-chlorophenyl)ethylamine was 52%, with an enantiomeric excess of 99% towards the unreacted substrate in a reaction time of 22 h. Finally, using optically pure (S)-1-(4-chlorophenyl)ethylamine as the raw material, the chem. synthesis of (S)-N-(1-(4-chlorphenyl)ethyl)-2-(5,7-dimethyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-ylthio)acetamide, a novel triazolopyrimidine herbicide, was achieved, and the total yield and purity were 83.5% and 95.3%, resp.

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics