Tag: M.W:100-200

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, Journal of Solid State Chemistry called Coordination preference of 1,2-bis((1H-imidazole-1-yl)methyl)benzene and different carboxylate ligands with transition metal ions directed by weak interactions, Author is Zhang, Yaowen; Li, Hongdong; Wang, Zuochao; Liu, Kang; Jiao, Shaoshao; Liu, Yongjun; Xiao, Zhenyu; Xu, Jixiang; Wang, Lei, the main research direction is copper cadmium silver imidazoleylmethylbenzene hydroxybenzoate cyclohexenecarboxylate cyclohexanecarboxylate polymer preparation; thermal stability luminescence transition metal imidazoleylmethylbenzene hydroxybenzoate cyclohexenecarboxylate cyclohexanecarboxylate; crystal structure transition metal imidazoleylmethylbenzene hydroxybenzoate cyclohexenecarboxylate cyclohexanecarboxylate.Product Details of 610-09-3.

Three novel metal-organic complexes, formulated as [Cu2(2-HBA)2(bimb)4] (1), {[Cd(CEDA)(bimb)]·H2O}n (2), and {[Ag2(bimb)2]·(1,4-CDA)·13H2O} (3) (bimb = 1,2-bis((1H-imidazole-1-yl)methyl)benzene; 2-HBA = 2-hydroxybenzoic acid; CEDA = cyclohex-4-ene-1,2-dicarboxylic acid; 1,4-CDA = cyclohexane-1,4-dicarboxylic acid), were synthesized by self-assembly of mixed ligands with Cu(II), Cd(II), and Ag(I) under hydrothermal conditions and characterized by means of single-crystal X-ray diffraction, X-ray powder diffraction, IR spectra, thermogravimetric anal., fluorescence spectra and UV-vis absorption spectra. 1 Is shown as a 0D structure, which is formed by Cu2+, 2-HBA ligands and bimb ligands. 2 Displays a 1D ladder structure, which is built by Cd2+, CEDA ligands and bimb ligands, and it is assembled into 2D structure by hydrogen bonding. 3 Possesses a 0D [Ag(bimb)]2 dimer which is assembled into 3D structure by the Ag-O weak interaction and hydrogen bonding. Interestingly, a rare 13-core water cluster participates in forming the network of 3. The UV-vis spectrum and luminescence properties were also studied and discussed.

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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 Synthesis of acylhydrazone based fluorescent probe for Al (III) and its property, published in 2019, which mentions a compound: 3326-71-4, mainly applied to acylhydrazone fluorescent probe aluminum fluorometry, Application In Synthesis of 2-Furoic hydrazide.

An acylhydrazone based fluorescent probe was synthesized by two-step reaction with tetrakis(bromomethyl) benzene and 2,4-dihyoxybenzaldehyde as raw materials. The compound showed excellent selectivity for Al3+ in the V(DMSO):V (H2O) = 19:1 solution, showing remarkable fluorescence enhancement effects towards Al3+ at the emission wavelength of 446 nm. The stoichiometry of 1:2 of the Al (III) complexes was determined by Job’s plots, 1HNMR titration experiments and LC-MS anal. The spectroscopic titration indicated that the detection limits of the probe for Al3+ were 1.16 × 10-7 mol/L and the complexing constant of the probe to Al3+ was 2.28 × 10-3 L/mol. Furthermore, the probe can be used for the determination of Al3+ in the river water and tap water samples.

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Benzisoxazole – Wikipedia,
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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Stereochemistry of catalytic hydrogenation. V. The assignment of cis and trans configurations, published in 1942, which mentions a compound: 610-09-3, Name is cis-Cyclohexane-1,2-dicarboxylic acid, Molecular C8H12O4, HPLC of Formula: 610-09-3.

cis-Hexahydrodiphenic acid (m. 240-1°) (I) with concentrated and fuming HNO3 gives only NO2 products and KMnO4 yields no useful products. I. (1g.) in 20 cc. warm AcOH, treated with O3 for 4 hrs. and then overnight with 50 cc. 3% H2O2 and the material separated by fractional acidification, gives about 0.5 g. unchanged I and 128 mg. (crude) cis-hexahydrophthalic acid (identified as the cis-dianilide, m. 238° and the phenylimide). This establishes the structure of I, of the acid m. 289° as cis-syn-cis-perhydrodiphenic acid and of the acid m. 223° as the trans-syn-trans isomer. trans-Δ10-9-Ketododecahydrophenanthrene (Rapson and Robinson, C. A. 29, 7996.1) with O3 in AcOH gives 2.45 g. of trans-2-keto-1, 1′-bicyclohexyl-2′-carboxylic acid (II), a pale yellow oil, isolated as the oxime (3.07g.), m. 162-3°. On acetylation and subsequent pyrolysis II is converted into an unsaturated lactone (not obtained pure) which is oxidized by KMnO4 to a poor yield of trans-hexahydrophthalic acid, m. 227-9° (after repeated crystallization from H2O; 215-20° given in the literature). This series of reactions is not as unequivocal as the oxidation of I. cis-9-Keto-as-octahydrophenanthrene (III) (cf. part VI) (0.4 g.), heated on the steam bath for 15 min. with 5 cc. concentrated HNO3 and 3 cc. fuming HNO3, gives 20 mg. cis-nitrohexahydrodiphenic acid (IV), m. 217-19°, and 0.1 g. of a tri-NO2 derivative of III, m. 151-2°. Heating 500 mg. of III with 1 cc. concentrated HNO3 and 1 cc. fuming HNO3 gives a di-NO2 derivative of III, m. 152°; this gives the tri-NO2 derivative with HNO3 on the steam bath. trans-III (350 mg.) with HNO3 gives about equal amounts (100 mg.) of trans-IV and the tri-NO2 derivative, needles from AcOH, m. 182-4°, or plates from hexane, m. 182.5-3.5°. The stereochem. implications of these results are discussed and it is shown that they are in agreement with other, less exact, evidence.

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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 Organic Chemistry called Kolbe electrolyses of cis- and trans-methyl hydrogen hexahydrophthalate, Author is Overberger, C. G.; Kabasakalian, Peter, which mentions a compound: 610-09-3, SMILESS is O=C([C@H]1[C@@H](C(O)=O)CCCC1)O, Molecular C8H12O4, Computed Properties of C8H12O4.

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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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

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.Glushkov, Vladimir A.; Babentsev, Dmitry N.; Dmitriev, Maksim V.; Stepanova, Kseniya A.; Kharintseva, Anastasiya Yu.; Simakhina, Anastasiya E. researched the compound: 2-Furoic hydrazide( cas:3326-71-4 ).Product Details of 3326-71-4.They published the article 《The synthesis of 3-(het)aryl-6,7-dihydro-5H-[1,2,4]-triazolo[3,4-a][2]benzazepines》 about this compound( cas:3326-71-4 ) in Chemistry of Heterocyclic Compounds (New York, NY, United States). Keywords: aryldihydrotriazolobenzazepine preparation; benzazepine hydrazide cyclization. We’ll tell you more about this compound (cas:3326-71-4).

4-Aryl-2-methylbutan-2-ols with methoxy or methylenedioxy substituents participate in the Graf-Ritter reaction with Me thiocyanate in the presence of an acid (H2SO4, MeSO3H) forming 1-methylsulfanyl-2-benzazepines in low yields (11-35%), which underwent cyclization with benzhydrazide or hetarenecarboxylic acid hydrazides upon reflux in o-dichlorobenzene into the corresponding 3-phenyl- and 3-hetaryl-6,7-dihydro-5H-1,2,4-triazolo[3,4-a][2]benzazepines I (R1 = R2 = OMe, R1+R2 = OCH2O; R3 = H, OMe; R4 = Ph, 2-furyl, 2-thienyl, 4-pyridyl) (45-74% yields).

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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 Chlorination of tetrahydrofuran-2-carboxylic acid esters, published in 1979-02-28, which mentions a compound: 37443-42-8, mainly applied to chlorination photochem furancarboxylate; furancarboxylate tetrahydro chlorination; chlorotetrahydrofurancarboxylate, Synthetic Route of C6H10O3.

Photochem. chlorination of Me tetrahydro-2-furancarboxylate in CCl4 at -15 to -20° gave the chlorofurancarboxylate I and small amounts of the dihydrofuran II (8%) and Me 2-furancarboxylate (2%). Et tetrahydro-2-furancarboxylate was similarly chlorinated. The by-products were formed by dehydrochlorination of intermediate x-chlorination products.

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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 《Photochemical transformations. XI. Isomerization of 1,3-cyclooctadiene》. Authors are Dauben, William G.; Cargill, Robert L..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).SDS of cas: 610-09-3. Through the article, more information about this compound (cas:610-09-3) is conveyed.

cf. CA 54, 22718a. Com. 1,3-cyclooctadiene (I, n2D0 1.4940, λ 228 mμ (ε 5470, alc.), 22.1 g.) in 2 l. dry Et2O irradiated 200 hrs. with a Hanovia high pressure Hg arc lamp, internal probe, type L with magnetic stirring (He atm.), the progress of irradiation followed by ultraviolet spectroscopy to disappearance of I, the Et2O evaporated at 40-50° through a 1 ft. Vigreux column, and the yellow residue distilled through a Nester-Faust 2 ft. spinning band column gave 36-41% bicyclo[4.2.0]oct-7-ene (II), C8H12, b. 131-2°, n2D0 1.4720, λ205 mμ (ε 700, alc.), nuclear magnetic resonance singlets at 4.04 and complex multiplets at 7.21, 8.47 τ, infrared spectrum identical with that of material prepared from cyclooctatetraene dibromide. NaIO4 (9.78 millimoles), 0.16 millimole KMnO4, and 0.37 millimole K2CO3 in 200 ml. H2O stirred 25 hrs. at 25° with 1.03 millimoles II, the mixture acidified with 15% H2SO4, extracted 20 hrs. with Et2O, the dried extract evaporated, and the residue triturated with petr. ether gave 105 mg. solid, recrystallized from H2O and from Et2O-petr. ether to give cis-1,2-cyclohexanedicarboxylic acid, m. 197.5-8.0°. At no time was the typical spectrum of 1,3,5-hexatriene detected in the ultraviolet absorption spectrum of the irradiated solution

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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, Article, Carbohydrate Research called Hydrolysis and interactions of D-cellobiose with polycarboxylic acids, Author is Amarasekara, Ananda S.; Wiredu, Bernard; Lawrence, Yen Maroney, which mentions a compound: 610-09-3, SMILESS is O=C([C@H]1[C@@H](C(O)=O)CCCC1)O, Molecular C8H12O4, Computed Properties of C8H12O4.

The hydrolysis of cellulose model compound D-cellobiose was studied with a series of eight common polycarboxylic acids and two monocarboxylic acids in aqueous medium using 0.500 mmol -COOH/L at 170 °C. The maleic acid showed the highest catalytic activity with turnover frequency (TOF) of 29.5 h-1. The interaction of carboxylic acids with D-cellobiose in DMSO-d6 was studied by determination of the pseudo first-order rate constant kH of anomeric -OH exchange rate in cellobiose using 1H NMR spectroscopy. The maleic, oxalic and citric acids showed infinitely large kH values indicating very strong interactions with D-cellobiose. The next highest interactions were found with phthalic acid (kH = 248.8 Hz). The FT-IR studies showed significant carboxylic acid C=O stretching frequency shifts (ΔνC=O) of 12, 13 and 10 cm-1 for maleic, oxalic and acetic acids resp. in mixtures with D-cellobiose.

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 2-Furoic hydrazide( cas:3326-71-4 ) is researched.Product Details of 3326-71-4.Mu, Xinyue; Shi, Liping; Yan, Liqiang; Tang, Ningli published the article 《A 2-Hydroxy-1-naphthaldehyde Schiff Base for Turn-on Fluorescence Detection of Zn2+ Based on PET Mechanism》 about this compound( cas:3326-71-4 ) in Journal of Fluorescence. Keywords: zinc hydroxynaphthaldehyde Schiff base fluorescence cell imaging; Cell imaging; Fluorescence analysis; Schiff base; Water sample; Zn2+. Let’s learn more about this compound (cas:3326-71-4).

Zinc ion is closely related to human health. Its content in human body is small, while the effect is large. However, it is not the more the better, must be in a scientific balance. Therefore, it is significant to the rapid detection of Zn2+ in the environment and organism. Herein, a fluorescent probe based on 2-hydroxy-1-naphthalene formaldehyde and furan-2-carbohydrazide was conveniently synthesized via Schiff base reaction. And this probe has been successfully applied to the accurate and quant. detection of Zn2+ in real samples, showing turn on fluorescence, good selectivity, very low detection limit, real time response and reusability. In addition, this probe has the potential application to trace Zn2+ in living cells with low cytotoxicity.

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Name: 2-Furoic hydrazide. 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 Nitrogen-containing naringenin derivatives for reversing multidrug resistance in cancer. Author is Ferreira, Ricardo J.; Gajdacs, Mario; Kincses, Annamaria; Spengler, Gabriella; dos Santos, Daniel J. V. A.; Ferreira, Maria-Jose U..

Naringenin (1), isolated from Euphorbia pedroi, was previously derivatized yielding compounds 2-13. In this study, aiming at expanding the pool of analogs of the flavanone core towards better multidrug resistance (MDR) reversal agents, alkylation reactions and chem. modification of the carbonyl moiety was performed (15-39). Compounds structures were assigned mainly by 1D and 2D NMR experiments Compounds 1-39 were assessed as MDR reversers, in human ABCB1-transfected mouse T-lymphoma cells, overexpressing P-glycoprotein (P-gp). The results revealed that O-methylation at C-7, together with the introduction of nitrogen atoms and aromatic moieties at C-4 or C-4′, significantly improved the activity, being compounds 27 and 37 the strongest P-gp modulators and much more active than verapamil. In combination assays, synergistic interactions of selected compounds with doxorubicin substantiated the results. While mol. docking suggested that flavanone derivatives act as competitive modulators, mol. dynamics showed that dimethylation promotes binding to a modulator-binding site. Moreover, flavanones may also interact with a vicinal ATP-binding site in both nucleotide-binding domains, hypothesizing an allosteric mode of action.

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