Category: 2689-65-8

SDS of cas: 2689-65-8. 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: 5-Iodo-2-furaldehyde, is researched, Molecular C5H3IO2, CAS is 2689-65-8, about Proton-acceptor capacity of aromatic and heterocyclic carbonyl compounds at the hydrogen bond formation stage. II. 5-Substituted furfurals. Author is Shkumat, A. P.; Polyakov, V. K.; Tsukerman, S. V..

The IR spectral shifts of the OH group of PhOH in the presence of I (R = H, Me, Me2N, Cl, Br, I) and II (R = H, Me, MeO, Cl, Br) were determined and correlated with substituent constants The furan ring displayed electron-donating character to a small extent. The doublet IR bands in the 3100-3600 cm-1 region arose form H bonding of PhOH with the carbonyl O and with the π system of I and II. Transmission coefficients of 0.4 and 0.5 were calculated for the 1,4-phenylene and 2,5-furandiyl groups.

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Recommanded Product: 2689-65-8. 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: 5-Iodo-2-furaldehyde, is researched, Molecular C5H3IO2, CAS is 2689-65-8, about Evaluation of the reactivity of furan series aldehydes in catalytic acetalation.

First order rate constants, k, are given for the formation, at 80°, of acetals between BuOH, trimethylolethane, trimethylolpropane, or pentaerythritol dichloranhydride and furfuraldehyde or 5-methyl-, chloro-, bromo-, iodo-, or nitrofurfuraldehyde. For equimolar reactant ratios, a 1st order relation is obtainable even though the reaction appears to be bimol. in nature. Velocities increase in the order: Me < Cl < Br < I < NO2, and decrease with increasing size and weight of the polyol. In a given solvent, a linear dependence is noted between the k-band in the absorption spectrum of the aldehyde and the rate constant for the reaction with a given alc., indicating that prediction of rate constants may be feasible by this means. When you point to this article, it is believed that you are also very interested in this compound(2689-65-8)Recommanded Product: 2689-65-8 and due to space limitations, I can only present the most important information.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 5-Iodo-2-furaldehyde( cas:2689-65-8 ) is researched.Quality Control of 5-Iodo-2-furaldehyde.Novikov, V. N.; Borodaev, S. V.; Babeshkina, L. D. published the article 《Mechanism of the reaction of furan aldehydes with secondary amines in methanol》 about this compound( cas:2689-65-8 ) in Khimiya Geterotsiklicheskikh Soedinenii. Keywords: furfural halo reaction amine mechanism; piperidine reaction halofurfural mechanism; morpholine reaction halofurfural mechanism; furfurylideneammonium halide preparation mechanism; aminal halofurfural intermediate. Let’s learn more about this compound (cas:2689-65-8).

A kinetic study showed that reaction of 5-iodofurfural (I) with piperidine in dilute solution is characterized by an induction period, during which an equilibrium between the starting materials and an intermediate is established. The reaction involves noncatalytic and piperidine-catalyzed paths to form aminal II (X = CH2). In the reaction of I with morpholine, the initial equilibrium between starting materials and intermediate is established instantaneously, and the reaction follows only a morpholine-catalyzed path to form II (X = O). I conversion to iminium salts III (X = CH2, O) was studied in concentrated solutions, and the isolation of aminal intermediates IV (X = CH2, O) was described. The bromo analogs were also studied.

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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 New hydrazide-hydrazones of isonicotinic acid: synthesis, lipophilicity and in vitro antimicrobial screening, published in 2018, which mentions a compound: 2689-65-8, Name is 5-Iodo-2-furaldehyde, Molecular C5H3IO2, Quality Control of 5-Iodo-2-furaldehyde.

This study describes the synthesis, lipophilicity and in vitro antimicrobial assays of 15 new hydrazide-hydrazones of isonicotinic acid. New derivatives were obtained on the basis of the condensation reaction of isonicotinic acid hydrazide with different aromatic aldehydes. The chem. structure of synthesized compounds was confirmed by spectral methods. Exptl. lipophilicity of new isonicotinic acid derivatives was determined using reversed-phase thin-layer chromatog. All synthesized compounds were subjected to in vitro antimicrobial assays against reference strains of Gram-pos. bacteria, Gram-neg. bacteria and fungi belonging to Candida spp. Some of the synthesized hydrazide-hydrazones proved to be significant antibacterial compounds and more potent than commonly used chemotherapeutic agents.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Infrared spectroscopic study of the condensation of iodofurfural bromofurfural with ketones. II》. Authors are Usmanov, Z.; Tadzhieva, M.; Kamenskii, I. V.; Khidoyatov, A..The article about the compound:5-Iodo-2-furaldehydecas:2689-65-8,SMILESS:IC1=CC=C(O1)C=O).Formula: C5H3IO2. Through the article, more information about this compound (cas:2689-65-8) is conveyed.

cf. CA 61, 9373a. The condensation products of iodofurfural with allylacetone, Me2CO, and CH2Ac2, and of bromofurfural with (CH2)2Ac2 were prepared and their ir spectra given. The products were obtained in the presence of EtOH and NaOH without heating. They are soluble in organic solvents. The spectra and elemental analyses show that the products are individual compounds with conjugated C:C and C:O bonds. They can be used as catalysts in the synthesis of thermoreactive polymers on the basis of furfural, furfurylidenealdehydes, furfurylidene ketones, and their fusible products.

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Category: naphthyridine. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 5-Iodo-2-furaldehyde, is researched, Molecular C5H3IO2, CAS is 2689-65-8, about Studies on furopyridines. VI. Synthesis and stereostructure of hetarylmethylene-3-oxo-4-thiofuro[3,4-c]pyridines. Author is Kaigorodova, E.A.; Kvak, S. N.; Ugrak, B. I.; Zaplishnyi, V. N.; Kul’nevich, V. G..

Condensation reaction of 6-methyl-3-oxo-4-thio-1H-furo[3,4-c]pyridine with heteroaromatic aldehydes proceeds regioselectively at the methylene center to give Z isomers of title compounds I (R = H, Z = O, S; R = Me, Br, iodo, Z = O) in s-cis conformations for furfuryl and in s-trans conformations for thenylmethylene derivatives

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COA of Formula: C5H3IO2. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 5-Iodo-2-furaldehyde, is researched, Molecular C5H3IO2, CAS is 2689-65-8, about Comparative study by mass spectrometry of the fragmentation of 5-substituted furfurals. Author is Lauzardo, N.; Mocelo, R.; Padron, G.; Buttner, J.; Fanghaner, F..

A comparative study on the fragmentation of a series of 5-substituted furfurals (X = H, CH3, Cl, Br, I, NO2, COOCH3, COOH) was made. Depending on the nature of the substituent, 2 main pathways of fragmentation were observed One of them starts with the fragmentation of the aldehyde group (X = H, CH3, Cl, Br, I). The other starts with the fragmentation of substituents (X = NO2, COOCH3, COOH). The spectra are discussed on the basis of these 2 fragmentation pathways.

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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 Synthesis and spectral properties of 2-(5-R-2-furylmethylene)-3-oxobutanenitriles, published in 1993-06-30, which mentions a compound: 2689-65-8, Name is 5-Iodo-2-furaldehyde, Molecular C5H3IO2, Application In Synthesis of 5-Iodo-2-furaldehyde.

Substituted 2-(5-R-2-furylmethylene)-3-oxobutanenitriles I (R = H, halo, Ph, etc.) were obtained by condensation of the corresponding 5-R-2-furaldehydes II with 3-amino-2-butenenitrile in acid medium. Relation between the structure and spectral properties (NMR, IR, UV, MS) is presented and the influence of substituents in position 5 of the furan ring on the conjugated 2-furylethylene system is discussed.

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Synthetic Route of C5H3IO2. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 5-Iodo-2-furaldehyde, is researched, Molecular C5H3IO2, CAS is 2689-65-8, about Study of copper, nickel, and zinc electroplating in the presence of some furaldehydes. Author is Kuznetsov, V. V.; Grigor’ev, V. P.; Fadeeva, O. V.; Nazarova, Z. N..

On the basis of the linearity principle of free energies, a quant. evaluation was made of the effect of the structure of furfural derivatives (I; R = H, Cl, I, Br, CHO, Ph, Me, OMe, Et2N, Me2N) on the kinetics of electroplating of Cu, Ni, and Zn. A correlation was established between electrochem., adsorption,and spectral characteristics of the studied furaldehydes and the substituent constants of their mols.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 5-Iodo-2-furaldehyde(SMILESS: IC1=CC=C(O1)C=O,cas:2689-65-8) is researched.Recommanded Product: Picolinamide. The article 《Determination of NH2 concentration on 3-aminopropyl tri-ethoxy silane layers and cyclopropylamine plasma polymers by liquid-phase derivatization with 5-iodo 2-furaldehyde》 in relation to this compound, is published in Applied Surface Science. Let’s take a look at the latest research on this compound (cas:2689-65-8).

The quantification of concentration of primary amines, e.g. in plasma polymerized layers, is a very important task for surface anal. However, the commonly used procedure, such as gas phase derivatization with benzaldehydes, shows several drawbacks, the most important of which are the side reaction effects. The authors propose and validate a liquid phase derivatization using 5-iodo 2-furaldehyde (IFA). The content of NH2 groups can be determined from the at. concentrations measured by XPS, in particular from the ratio of I 3d and N 1s peak intensities. First, the authors demonstrate the method on a prototypical system such as 3-aminopropyl tri-ethoxy silane (APTES) layer. Here the XPS anal. carried out after reaction of APTES layer with IFA gives the fraction of primary amines (NH2/N) of 38.3 ± 7.9%. Comparing this value with that obtained by N 1s curve fitting of APTES layer giving 40.9 ± 9.5% of amine groups, all primary amines were derivatized by reaction with IFA. The second system to demonstrate the method comprises cyclopropylamine (CPA) plasma polymers that were free from conjugated imines. In this case the method gives the NH2 fraction ∼8.5%. This value is closely matching the NH2/N ratio estimated by 4-trifluoromethyl benzaldehyde (TFBA) derivatization. The reaction of IFA with CPA plasma polymer exhibiting high d. of conjugated imines revealed the NH2/N fraction of ∼10.8%. This value was significantly lower compared to 17.3% estimated by TFBA derivatization. As the overestimated d. of primary amines measured by TFBA derivatization is probably related to the side reaction of benzaldehydes with conjugated imines, the proposed IFA derivatization of primary amines can be an alternative procedure for the quantification of surface amine groups.

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