Category: 2689-65-8

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 reaction of halofurfural with ketones》. Authors are Usmanov, Z.; Tadzhieva, M. A..The article about the compound:5-Iodo-2-furaldehydecas:2689-65-8,SMILESS:IC1=CC=C(O1)C=O).COA of Formula: C5H3IO2. Through the article, more information about this compound (cas:2689-65-8) is conveyed.

The reactions of furfuryl iodide (I) and bromide (II) with ketones were investigated. NaOH (3-5 ml., 5%), 0.05 mole halofurfural, and 0.8-3 ml. ketone were added to 20 ml. solvent. The reaction lasted 1-2 hrs. The product was precipitated with 30-50 ml. H2O and dried. The light-yellow oily products were investigated in C2H4Cl2 solutions, the crystalline products in pressed KBr disks. The compositions of the condensation products of I with methyl nonyl ketone, methyl naphthyl ketone, and acetophenone were C16H23O2I, C17H11O2I, and C13H9O2I, resp. The condensations of II with methyl alkyl ketones, where the alkyl group was Et, Pr, Bu, amyl, hexyl, isopropyl, and isobutyl, and with acetophenone and acetylacetone, led to C9H9O2Br, C10H11O2Br, C11H13O2Br, C12H15O2Br, C13H17O2Br, C10H11O2Br, C11H13O2Br, C13H9O2Br, and C10H9O3Br, resp. The ir spectra indicate the functional groups present in the various products.

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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.Application of 2689-65-8.Chen, Yi-Hung; Knochel, Paul published the article 《Preparation of Aryl and heteroaryl indium(III) reagents by the direct insertion of indium in the presence of LiCl》 about this compound( cas:2689-65-8 ) in Angewandte Chemie, International Edition. Keywords: functionalized aryl heteroaryl indium halide preparation cross coupling iodoarene. Let’s learn more about this compound (cas:2689-65-8).

Sensitive functional groups, including ketone, aldehyde, and ester groups, may be present in aryl In reagents prepared in good to excellent yields by the treatment of aryl and heteroaryl iodides with In powder in the presence of LiCl. These functionalized organoindium(III) reagents readily undergo Pd-catalyzed cross-coupling with functionalized aryl iodides, including those containing NH or OH groups.

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Name: 5-Iodo-2-furaldehyde. 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 Synthesis and germistatic action of some 5-substituted 2-(α-furyl)-1,3-dioxanes. Author is Zelikman, Z. I.; Kul’nevich, V. G.; Shkrebets, A. I.; Pershin, G. N.; Mikerina, A. L..

Bactericidal furyldioxanes (I; R = H, Me, Br, iodo) were obtained in 71-82% yields by condensation of the appropriate furfural derivative with HOCH2C(NO2)-EtCH2OH. No activity was exhibited against Staphylococcus, Streptococcus, or tuberculosis bacteria, but I (R = H) was active against microspores, trichophytosis, and Achorion. I (R = Br, iodo) were also active against microspores and Achorion.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 5-Iodo-2-furaldehyde, is researched, Molecular C5H3IO2, CAS is 2689-65-8, about Direct synthesis of ester-containing indium homoenolate and its application in palladium-catalyzed cross-coupling with aryl halide, the main research direction is indium ester homoenolate preparation coupling aryl halide.COA of Formula: C5H3IO2.

An efficient method for the synthesis of ester-containing indium homoenolate via a direct insertion of indium into β-halo ester in the presence of CuI/LiCl is described. The synthetic utility of the indium homoenolate was demonstrated by palladium-catalyzed cross-coupling with aryl halides in DMA with wide functional group compatibility.

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COA of Formula: C5H3IO2. 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 Mechanism and kinetics of furfural oxidation by hydrogen peroxide. Author is Badovskaya, L. A.; Kul’nevich, V. G.; Muzychenko, G. F.; Kaklyugina, T. Ya..

The 1st-order rate constants and activation parameters for oxidation of furfural by H2O2 and the effect of 5-substituents on the rate constant indicated a heterolytic mechanism with loss of rotational and translational degrees of freedom in the transition state.

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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, Zhurnal Organicheskoi Khimii called Kinetics and mechanism of the acetalation of 5-substituted furfural, Author is Kul’nevich, V. G.; Zelikman, Z. I.; Pustovarov, V. S., which mentions a compound: 2689-65-8, SMILESS is IC1=CC=C(O1)C=O, Molecular C5H3IO2, Application In Synthesis of 5-Iodo-2-furaldehyde.

The rate of formation of acetals from 5-substituted furfurals (I, R = Er2N, Me2N, Me, H, Cl, Br, I, NO2) and pentaerythritol dichlorohydrin, MeC(CH2OH)3, EtC(CH2OH)3, or BuOH in C6H6 in the presence of KU-2 cation-exchange resin (H form) increased in the stated order of R and alcs. The rate constants correlated with the Brown σn+ constants of R.

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D’Auria, Maurizio; Vantaggi, Anna published the article 《1H-Indenylfuran and -thiophene derivatives: a new class of singlet-oxygen sensitizers》. Keywords: singlet oxygen sensitizer indenylfuran indenylthiophene; fluorescence indenylfuran indenylthiophene; UV spectra indenylfuran indenylthiophene; triplet energy indenylthiophene.They researched the compound: 5-Iodo-2-furaldehyde( cas:2689-65-8 ).Quality Control of 5-Iodo-2-furaldehyde. 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:2689-65-8) here.

Photophys. and photochem. properties of title compounds I (X = O, S; R = H, Me) and II (R = H, inden-2-yl) were studied. All the compounds absorbed UV light at 350-380 nm. The fluorescence spectra of I and II showed bands at 410-470 nm and quantum yields in the range 0.25-0.88. Attempts to calculate the triplet energy failed except for I (X = S, R = Me) and II (R = H), which showed ET = 43-44 kcal mol-1. These compounds are a new class of singlet-oxygen sensitizers. The sensitized reaction of 2,5-dimethylfuran with singlet oxygen was followed. I (X = O, R = H) and II (R = inden-2-yl) are more reactive than α-terthiophene (III), while the other compounds show the same reactivity as III. This behavior can be explained by different intersystem crossing quantum yields. Diazabicyclo[2.2.2]octane is a quencher of singlet oxygen in this reaction. Superoxide ion formation is excluded by photooxidation of α,α’-dimethylstilbene.

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Recommanded Product: 5-Iodo-2-furaldehyde. 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 Electrochemically Promoted Nickel-Catalyzed Carbon-Sulfur Bond Formation. Author is Wang, Yang; Deng, Lingling; Wang, Xiaochen; Wu, Zhengguang; Wang, Yi; Pan, Yi.

This work describes a nickel-catalyzed Ullmann-type thiolation of aryl iodides under mild electrochem. conditions. The simple undivided cell with graphite felt/nickel foam electrode setups offers excellent substrate tolerance, affording aryl and alkyl sulfides in good chem. yields. Furthermore, the mechanism for this electrochem. cross-coupling reaction has been investigated by cyclic voltammetry.

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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.Recommanded Product: 5-Iodo-2-furaldehyde.Povazanec, F.; Piklerova, A.; Kovac, J.; Kovac, S. published the article 《Furan derivatives. XLVI. Infrared spectra of substituted 2-furyl cyanides》 about this compound( cas:2689-65-8 ) in Chemicke Zvesti. Keywords: IR furyl cyanide; substituent effect IR furonitrile; solvent effect IR furonitrile. Let’s learn more about this compound (cas:2689-65-8).

The spectral data of the cyanides I (R = H, halo, Me, NO2, AcO) in CHCl3 and CCl4 were given and the influence of substituents and solvents on the wave numbers and integrated absorption intensities of the ν(CN) bands discussed. Wave numbers of the ν(CN) bands increased with increasing electron-acceptor ability of the substituents; the wave numbers were higher than those of the corresponding substituted Ph cyanides. Integrated absorption intensities of the ν(CN) bands decreased with increasing electron-acceptor ability of the substituents and were more significantly influenced by the nature of the substituents and the polarity of the solvents than the wave numbers of these bands.

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Name: 5-Iodo-2-furaldehyde. 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 3-(5-X-2-Furyl)-2-cyanoacrylonitriles on reaction with 2-cyanomethylbenzothiazole. Author is Kada, Rudolf; Ilavasky, Dusan; Goljer, Igor; Gaher, Peter.

2-Cyanomethylbenzothiazole reacts with 3-(5-substituted 2-furyl)-, 3-(2-thienyl)- or 3-(2-pyrrolyl)-2-cyanoacrylonitrile in THF under catalysis of triethylamine to give 1-(2-benzothiazolyl)-1-acyano-2-heteroarylethylenes e.g. I (R = H, X = O, S, NH; R = Br, Me, NO2, X = O) as a result of replacement of malonodinitrile by 2-cyanomethylbenzothiazole.

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