Day: April 11, 2022

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 610-09-3, is researched, SMILESS is O=C([C@H]1[C@@H](C(O)=O)CCCC1)O, Molecular C8H12O4Journal, Polyhedron called The structural diversity and luminescent properties of Zn(II) coordination assemblies with cyclohexane (or cyclohexene) dicarboxylate anions and two positional isomeric ligands, Author is Huang, Fu-Ping; Lei, Jing-Bin; Yu, Qing; Bian, He-Dong; Yan, Shi-Ping, the main research direction is preparation zinc cyclohexene cyclohexane carboxylate bispyridyltriazole coordination polymer; crystal structure zinc cyclohexene cyclohexane carboxylate bispyridyltriazole coordination polymer; luminescence zinc cyclohexene cyclohexane carboxylate bispyridyltriazole coordination polymer.Application of 610-09-3.

Four Zn(II) coordination polymers, {[Zn(chedc)(4,4′-Hbpt)]}n (1), {[Zn3(chadc)2(4,4′-Hbpt)2(4,4′-bpt)2]·3H2O}n (2), {[Zn2(chadc)2(3,3′-Hbpt)]}n (3) and {[Zn2(chedc)2(3,3′-Hbpt)]·H2O}n (4) (chadc = cis-1,2-cyclohexanedicarboxylate anion, chedc = cis-4-cyclohexene-1,2-dicarboxylate anion, 4,4′-Hbpt = 1H-3,5-bis(4-pyridyl)-1,2,4-triazole, 3,3′-Hbpt = 1H-3,5-bis(3-pyridyl)-1,2,4-triazole) were produced by the reaction of two positional isomeric dipyridyl bridging ligands and two dicarboxylate anions with Zn(II) salts under hydrothermal conditions. Structural anal. reveals that 1 exhibits a double-chain and 2 exhibits a 3-dimensional network with a (62.10)2(64.102) topol., while 3 and 4 show similar layer structures. The luminescent properties of these complexes were briefly studied.

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

Recommanded Product: Methyl tetrahydrofuran-2-carboxylate. 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: Methyl tetrahydrofuran-2-carboxylate, is researched, Molecular C6H10O3, CAS is 37443-42-8, about An efficient synthesis of 3,4-dihydropyridone via a tandem olefin isomerization-ring-closing metathesis reaction. Author is Si, Chong; Fales, Kevin R.; Boyer, Robert D.; George Njoroge, F..

Novel 3,4-dihydropyridones were efficiently prepared via a tandem olefin isomerization-ring-closing metathesis reaction catalyzed by the second-generation Grubbs catalyst. The products were further functionalized at the 5-position, providing an interesting structural motif to be evaluated in medicinal chem.

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

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 610-09-3, is researched, Molecular C8H12O4, about Preparative separation of isomeric and stereoisomeric dicarboxylic acids by pH-zone-refining counter-current chromatography, the main research direction is dicarboxylic acid isomeric stereoisomer pH zone refining countercurrent chromatog.Electric Literature of C8H12O4.

This work involves the preparative separation of some isomeric dicarboxylic acids using pH-zone-refining countercurrent chromatog. (CCC), a relatively new preparative technique for the separation of ionizable compounds The paper concentrates especially on the separation of a synthetic mixture of closely related cis and trans pairs of 1-methyl- and 1,3-dimethyl-1,3-cyclohexanedicarboxylic acids. The elution sequence of the isomers is discussed in terms of their relative acidities (pKa values) in solution and gas phase, hydrophobicities, and steric configuration. Two possible explanations are suggested for the mechanism of separation They both involve the amount of retainer acid used, as it affects the separation and plays a role in the chemohydrodynamic equilibrium of the dicarboxylic acids in the column.

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

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 3326-71-4, is researched, Molecular C5H6N2O2, about A transition metal-free approach towards synthesis of β-carboline tethered 1,3,4-oxadiazoles via oxidative C-O bond formation, the main research direction is formyl carboline hydrazide iodine promoter oxidative cyclocondensation reaction; pyridoindolyl oxadiazole preparation.Quality Control of 2-Furoic hydrazide.

An efficient protocol were developed for one-pot synthesis of biol. interesting β-carboline substituted 1,3,4-oxadiazoles via an I2-assisted oxidative C-O bond formation strategy. This metal-free sequential approach was found to be compatible with diversely substituted 1-formyl β-carbolines and aromatic as well as aliphatic hydrazides, providing access to a variety of multifunctional β-carboline linked 1,3,4-oxadiazole derivatives in good to excellent yields. The methodol. was found to be applicable to gram scale synthesis of β-carboline substituted 1,3,4-oxadiazole derivatives Addnl., β-carboline C1 linked 2-amino-1,3,4-oxadiazoles and bis-1,3,4-oxadiazoles were also synthesized using the same strategy.

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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 2-Furoic hydrazide(SMILESS: O=C(C1=CC=CO1)NN,cas:3326-71-4) is researched.Reference of (Piperidinium-1-ylmethyl)trifluoroborate. The article 《Synthesis of Acyl Phosphoramidates Employing a Modified Staudinger Reaction》 in relation to this compound, is published in Organic Letters. Let’s take a look at the latest research on this compound (cas:3326-71-4).

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

Recommanded Product: 3326-71-4. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 2-Furoic hydrazide, is researched, Molecular C5H6N2O2, CAS is 3326-71-4, about Binucleating Hydrazonic Ligands and Their μ-Hydroxodicopper(II) Complexes as Promising Structural Motifs for Enhanced Antitumor Activity. Author is Rada, Jesica Paola; Bastos, Beatriz S. M.; Anselmino, Luciano; Franco, Chris H. J.; Lanznaster, Mauricio; Diniz, Renata; Fernandez, Claudio O.; Menacho-Marquez, Mauricio; Percebom, Ana Maria; Rey, Nicolas A..

Very few inorganic antineoplastic drugs have entered the clinic in the last decades, mainly because of toxicity issues. Because Cu is an essential trace element of ubiquitous occurrence, decreased side effects could be expected in comparison with the widely used Pt anticancer compounds Two novel hydrazonic binucleating ligands and their μ-hydroxo dicopper(II) complexes were prepared and fully characterized. They differ by the nature of the aromatic group present in their aroylhydrazone moieties: while H3L1 and its complex [Cu2(μ-OH)(HL1)](ClO4) (1), possess a thiophene ring, H3L2 and [Cu2(μ-OH)(HL2)](ClO4) (2) contain the more polar furan heterocycle. X-ray diffraction indicates that both coordination compounds are very similar in structural terms and generate dimeric arrangements in the solid state. Pos.-ion electrospray ionization mass spectrometry analyses confirmed that the main species present in a 10% DMSO/water solution should be [Cu2(HL)(OH)]+ and the DMSO-substituted derivative [Cu2(L)(DMSO)]+. Scattering techniques [dynamic light scattering (DLS) and small-angle x-ray scattering] suggest that the complexes and their free ligands interact with bovine serum albumin (BSA) in a reversible manner. The binding constants to BSA were determined for the complexes through fluorescence spectroscopy. Also, to gain insight into the mechanism of action of the compounds, calf thymus DNA binding studies by UV-visible and DLS measurements using plasmid pBR322 DNA were also performed. For the complexes, DLS data seem to point to the occurrence of DNA cleavage to Form III (linear). Both ligands and their dicopper(II) complexes display potent antiproliferative activity in a panel of four cancer cell lines, occasionally even in the submicromolar range, with the complexes being more potent than the free ligands. The authors’ data on cellular models correlate quite well with the DNA interaction experiments The results presented herein show that aroylhydrazone-derived binucleating ligands, as well as their dinuclear μ-hydroxodicopper(II) complexes, may represent a promising structural starting point for the development of a new generation of highly active antitumor agents.

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

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Application of the cyano ester ring closure to five- and six-membered rings》. Authors are Fuson, Reynold C.; Cole, Wayne.The article about the compound:cis-Cyclohexane-1,2-dicarboxylic acidcas:610-09-3,SMILESS:O=C([C@H]1[C@@H](C(O)=O)CCCC1)O).Quality Control of cis-Cyclohexane-1,2-dicarboxylic acid. Through the article, more information about this compound (cas:610-09-3) is conveyed.

cf. F. and Kao, C. A. 23, 2424. Et α,α’-dibromopimelate and KCN in absolute EtOH, refluxed for 60 hrs., give 80-8% of Et 1-cyano-1,2-cyclopentanedicarboxylate, b2 126-8°, d420 1.108, nD20 1.4560; hydrolysis with concentrated HCl gives a mixture of trans- and cis-1,2-cyclopentanedicarboxylic acid (Perkins, J. Chem. Soc. 65, 572(1894)). Similarly Et α,α’-dibromosuberate yields 48-55% of Et 1-cyano-1,2-cyclohexanedicarboxylate, b2 129-30°, d420 1.082, nD20 1.4570; hydrolysis with 20% HCl yields a mixture of the 2 1,2-cyclohexanedicarboxylic acids, the trans-isomer being obtained pure (Baeyer, Ann. 258, 213(1890)). Et α,α’-dibromoazelate and Et α,α’-dibromosebacate failed to give detectable quantities of the cyclic CN esters containing 7- or 8-membered rings.

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Reference:
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, Polyhedron called Nitroaromatic detecting zinc cyclohexyldicarboxylate coordination polymers with a long spanning dipyridyl tethering ligand, Author is LaDuca, Andrew R.; Przybyla, Jack J.; Porta, Angela R.; LaDuca, Robert L., which mentions a compound: 610-09-3, SMILESS is O=C([C@H]1[C@@H](C(O)=O)CCCC1)O, Molecular C8H12O4, Reference of cis-Cyclohexane-1,2-dicarboxylic acid.

Four new divalent Zn coordination polymers containing a dianionic cyclohexyldicarboxylate and the long-spanning pillaring dipyridyl ligand bis(4-pyridylmethyl)piperazine (bpmp) were prepared and structurally characterized via single-crystal x-ray diffraction. Significant structural and topol. diversity across the series is evident. {[Zn2(cis-12cdc)2(bpmp)]·6H2O}n (1, cis-12cdc = cis-1,2-cyclohexanedicarboxylate) shows a coordination polymer layer motif with embedded paddlewheel {Zn2(OCO)4} dinuclear units and T6(4)4(4) classification H2O tapes. Using cis-1,2-cyclohex-4-enedicarboxylate (cis-12chedc) afforded [Zn2(cis-12chedc)2(bpmp)(H2O)2]n (2), which manifests a simple yet unusual (6)(648.10) topol. [Zn2(cis-13cdc)2(bpmp)]n (3, cis-13cdc = cis-1,3-cyclohexanedicarboxylate) displays sawtooth (4,4) coordination polymer layers, while [Zn2(trans-14cdc)2(bpmp)]n (4, trans-14cdc = trans-1,4-cyclohexanedicarboxylate) shows a 3-dimensional system of coordination polymer networks with 3-fold interpenetrated 41263pcu topol. The layered phases 1-3 showed capability for the detection of small quantities of nitrobenzene in EtOH suspension.

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

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《The configuration of polymethylenedicarboxylic acids. I. The dissociation constants of the cyclohexanedicarboxylic acids》. Authors are Kuhn, Richard; Wassermann, Albert.The article about the compound:cis-Cyclohexane-1,2-dicarboxylic acidcas:610-09-3,SMILESS:O=C([C@H]1[C@@H](C(O)=O)CCCC1)O).Formula: C8H12O4. Through the article, more information about this compound (cas:610-09-3) is conveyed.

The 1st and 2nd dissociation constants for the cyclohexanedicarboxylic acids in water and in 50% MeOH are given as follows (-log K, -log K2 and K1/K2, resp.): In H2O: o-cis, 4.34 (19°), 6.76 (19°), 267; o-trans, 4.18 (18°), 5.93 (19°), 56; m-cis, 4.10 (16°), 5.46 (16°), 23; m-trans, 4.31 (19°), 5.73 (19°), 26; p-cis, 4.44 (20°), 5.79 (19°), 22; p-trans, 4.18 (16°), 5.42 (19°), 17. In 50% MeOH: o-cis, 5.26 (18°), 8.20 (18°), 885; o-trans, 5.38 (18°), 7.31 (18°), 85; m-cis, 5.25 (17°), 6.83 (17°), 38; m-trans, 5.48 (19°), 7.40 (19°), 83; p-cis, 5.59 (19°), 7.15 (19°), 36; p-trans, 5.32 (18°), 6.81 18°), 30. The configurations of the various isomeric forms of the hexahydrophthalic acids are graphically presented.

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 610-09-3, is researched, SMILESS is O=C([C@H]1[C@@H](C(O)=O)CCCC1)O, Molecular C8H12O4Journal, Article, Research Support, Non-U.S. Gov’t, Inorganic Chemistry called Probing Single-Chain Magnets in a Family of Linear Chain Compounds Constructed by Magnetically Anisotropic Metal-Ions and Cyclohexane-1,2-Dicarboxylate Analogues, Author is Zheng, Yan-Zhen; Xue, Wei; Tong, Ming-Liang; Chen, Xiao-Ming; Zheng, Shao-Liang, the main research direction is transition metal cyclohexane carboxylate polymer complex magnetic preparation structure; crystal structure transition metal cyclohexane carboxylate polymer complex; magnetic property transition metal cyclohexane carboxylate polymer complex.Recommanded Product: 610-09-3.

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