Day: April 6, 2022

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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Reference:
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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Reference:
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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Reference:
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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Reference:
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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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 《Kolbe electrolyses of cis- and trans-methyl hydrogen hexahydrophthalate》. Authors are Overberger, C. G.; Kabasakalian, Peter.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).Application In Synthesis of cis-Cyclohexane-1,2-dicarboxylic acid. Through the article, more information about this compound (cas:610-09-3) is conveyed.

The Kolbe electrolysis of cis- and trans-Me H hexahydrophthalate (I) in anhydrous MeOH has been carried out. Identical mixtures of uncoupled products were obtained from both isomers. Me 1-cyclohexene- and 2-cyclohexene-1-carboxylate and Me cyclohexanecarboxylate were obtained as monomeric products. Dimeric materials were obtained for the first time from I. Saponification of the dimeric ester mixture gave 2 perhydrodiphenic acids, trans-anti-trans and trans-syn-trans, which were separated and identified quantitatively by adsorption chromatography and infrared analysis. Since epimerization occurred on all centers α to the carboxyl group, no conclusion about the stereochemistry of the radicals could be deduced from the ratios of coupled products.

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

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Methyl tetrahydrofuran-2-carboxylate, is researched, Molecular C6H10O3, CAS is 37443-42-8, about Hydrogenation and esterification of α-furancarboxylic acid over Ru-Pd/γ-Al2O3 catalyst.SDS of cas: 37443-42-8.

Me tetrahydro-α-furancarboxylate was prepared by esterification and hydrogenation of α-furancarboxylic acid using Ru-Pd/γ-Al2O3 as catalyst in fixed bed microreactor by a one-step process. Under optimum conditions, the product yield reached 97.2%. The catalyst activity did not deteriorate after 400 h.

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

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: cis-Cyclohexane-1,2-dicarboxylic acid, is researched, Molecular C8H12O4, CAS is 610-09-3, about Structure of some cyclohexyl compounds as related to their ability to stimulate plant growth.Quality Control of cis-Cyclohexane-1,2-dicarboxylic acid.

Of 9 cyclohexyl compounds tested as plant growth regulators on bush bean plants (Phaseolus vulgaris), only cyclohexanecarboxylic (I) [98-89-5] and cyclohexylacetic acid (II) [5292-21-7] significantly increased pod production Among I, II, cyclohexylpropionic [701-97-3], and cyclohexylbutyric acid [4441-63-8], the stimulating effect decreased as the number of CH2 groups in the side chain increased, from 0-3. The effective compounds possessed an H-saturated C6-ring with a single carboxyl group attached directly to the ring or separated by 1 ≤ CH2 group.

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

Formula: C8H12O4. 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 [Ni(cyclam)]2+ and [Ni(R,S-Me6cyclam)]2+ as Linkers or Counterions In Uranyl-Organic Species with cis- and trans-1,2-Cyclohexanedicarboxylate Ligands. Author is Thuery, Pierre; Harrowfield, Jack.

The macrocyclic species [Ni(cyclam)]2+ and [Ni(R,S-Me6cyclam)]2+ were used as addnl. cations in the solvo-hydrothermal synthesis of five uranyl ion complexes with cis- or trans-1,2-cyclohexanedicarboxylic acids (c-1,2-chdcH2 and t-1,2-chdcH2). In the complex [UO2(c-chdc)2Ni(cyclam)(H2O)] (1), dimeric uranyl dicarboxylate subunits are assembled into a two-dimensional (2D) network through axial coordination of NiII to carboxylate groups. Although they involve different isomers, the complexes [(UO2)2(c-chdc)2(c-chdcH)2Ni(cyclam)] (2) and [(UO2)2(t-chdc)2(t-chdcH)2Ni(cyclam)] (3) are very similar, both containing uranyl-based one-dimensional (1D) subunits which are assembled into 2D networks by bridging [Ni(cyclam)]2+ groups. The orientation of the uncoordinated carboxylic group is different in 2 and 3, the layers in 2 being hydrogen bonded to each other through carboxylic acid dimer formation. Using the pure (1R,2R) enantiomer of t-1,2-chdcH2 gives the complex [Ni(cyclam)][(UO2)5(R-t-chdc)3(R-t-chdcH)(O)2(CH3COO)] (4), in which pentanuclear uranyl subunits are assembled into 1D chains by dicarboxylic/-ate ligands in the usual bis(equatorial) chair conformation, another ligand in the divergent bis(axial) conformation uniting these chains into a 2D assembly; the [Ni(cyclam)]2+ ions are simple counterions and are stacked in parallel fashion between the layers. [Ni(R,S-Me6cyclam)][Ni(R,S-Me6cyclam)(H2O)2][(UO2)2(t-chdc)2(O)]2 (5), in which the (1R,2R) enantiomer of t-chdcH2 used has undergone racemization, contains discrete bis(μ3-oxo)-centered tetranuclear uranyl complexes, organized into columns and layers by extensive hydrogen bonding to the counterions. The discoidal shape, available axial coordination sites, and hydrogen bond donor potential of these macrocyclic NiII complexes make them efficient assembling agents in uranyl-organic coordination polymers. As often observed in the presence of d-block metal cations, uranyl luminescence is either completely or partially quenched in complexes 1 and 3, resp.

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Caramel products of glucose with water during heating process and their bioactivities, published in 2020, which mentions a compound: 3326-71-4, mainly applied to glucose water caramel product antioxidant antibacterial heating, Reference of 2-Furoic hydrazide.

In this study, the type I caramel reactions of the glucose-water system were carried out. The glucose caramel products (GCPs) at different reaction stages were collected and the reaction rate, UV absorption, flavor compound, and the antioxidant and antibacterial activities were determined The result showed that the glucose reaction rate of the GCP yielded at 180°C and 4 min arrived at the stable range of around 80.0%. For UV absorptions of GCPs at 305 nm increased approx. in the exponential order. Moreover, the GCP yielded at 180°C and 4 min was revealed to have the highest concentration of main flavor compounds and potent antioxidant and antibacterial activities.

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