Category: 2689-65-8

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.SDS of cas: 2689-65-8.Mocelo, R.; Pustovarov, V. published the article 《Study of the nucleophilic substitution of halogens in furan compounds. (I). Furfurals》 about this compound( cas:2689-65-8 ) in Revista sobre los Derivados de la Cana de Azucar. Keywords: halogenation furfural; halofurfural halogen exchange. Let’s learn more about this compound (cas:2689-65-8).

5-Bromofurfural (I, R = Br) was prepared by treating I (R = H) in dichloroethane with Br in the presence of hydroquinone. Reaction of I (R = Br) with LiCl in DMF gave 74% I (R = Cl) and with KI-HOAc gave 80% I (R = I). I (R = I) was similarly obtained in 44% yield from I (R = Cl). I (R = Cl) could also be converted to I (R = Br) with KBr-HOAc.

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1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

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 Chemical shift in NMR and conformation of some furfural derivatives, the main research direction is conformation NMR furfural derivative.Category: naphthyridine.

The NMR spectra of a series of 5-substituted furfurals (where the substituent is MeO,Me,Br,I,COOMe,CHO or NO2) were measured in 1% CCl4 solutions The influence of the substituent upon the relation of the cis-trans rotational isomers was studied by means of the correlation between the chem. shifts of the substituted furfurals (referred to furfural) and the resp. shifts of the 5-mono substituted furans (referred to furan). For the H atom in the 4 position, an excellent agreement was found between the substituted furfural and the substituted furan series, whereas for the H atom in the 3 position, there is a noticeable deviation for the iodo compound This could be due to an alteration in the cis-trans isomerism in 5 iodofurfural as compared to furfural, which may be originated in the steric hindrance of I which favors the 0-0 trans isomer and therefore a higher shielding in the H atom in the 3 position.

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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 Kinetics and mechanism of the acetalation of 5-substituted furfural, published in 1971, which mentions a compound: 2689-65-8, mainly applied to furfural acetals formation kinetics, Formula: C5H3IO2.

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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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.Marchalin, Stefan; Mamani, Lucy Nieves Hinojosa; Ilavsky, Dusan; Pronayova, Nada; Lesko, Jan researched the compound: 5-Iodo-2-furaldehyde( cas:2689-65-8 ).Formula: C5H3IO2.They published the article 《Synthesis and spectral properties of 2-(5-R-2-furylmethylene)-3-oxobutanenitriles》 about this compound( cas:2689-65-8 ) in Collection of Czechoslovak Chemical Communications. Keywords: furylmethyleneoxobutanenitrile; butanenitrile furylmethylene; condensation furaldehyde aminobutenenitrile; substituent effect conjugation furylethylene system; LFER furylmethyleneoxobutanenitrile; structure property furylmethyleneoxobutanenitrile. We’ll tell you more about this compound (cas:2689-65-8).

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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1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

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: 847818-64-8. The article 《Furan derivatives. LXXXII. Kinetics of the condensation of 5-nitro-2-furfuryl dichloromethyl sulfone with aldehydes》 in relation to this compound, is published in Collection of Czechoslovak Chemical Communications. Let’s take a look at the latest research on this compound (cas:2689-65-8).

The kinetics of condensation of I with II (R = H, Me, Cl, Br, iodo, CO2Me, NO2) and III (R1 = H, 4-Me, 4-Cl, 3,4-Cl2, 4-Br, 4-CO2Et, 2-NO2, 3-NO2, 4-NO2), resp., were correlated with substituent constants

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1,8-Naphthyridine | C8H6N2 – PubChem

Hrdina, M.; Jurasek, A.; Knoppova, V. published an article about the compound: 5-Iodo-2-furaldehyde( cas:2689-65-8,SMILESS:IC1=CC=C(O1)C=O ).Recommanded Product: 5-Iodo-2-furaldehyde. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:2689-65-8) through the article.

The kinetics of condensation of I with II (R = H, Me, Cl, Br, iodo, CO2Me, NO2) and III (R1 = H, 4-Me, 4-Cl, 3,4-Cl2, 4-Br, 4-CO2Et, 2-NO2, 3-NO2, 4-NO2), resp., were correlated with substituent constants

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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 Palladium-Catalyzed Arylation of Cyclopropanes via Directing Group-Mediated C(sp3)-H Bond Activation To Construct Quaternary Carbon Centers: Synthesis of cis- and trans-1,1,2-Trisubstituted Chiral Cyclopropanes.

Pd(II)-catalyzed tertiary C(sp3)-H arylation of cyclopropanes via directing group-mediated C-H activation for the construction of a chiral quaternary carbon center on cyclopropanes using aryl iodides as a coupling partner is reported. The arylation had a wide substrate scope and good functional group tolerance, including heteroaryl iodides, to provide various chiral arylcyclopropanes with the cis- and trans-1,1,2-trisubstituted structures.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Dipole moments of some furfural derivatives》. Authors are Kova-lenko, K. N.; Minkin, V. I.; Nazarova, Z. N.; Kazachenko, D. V..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.

The following values of dipole moments (in D.) were determined from the dielec. data in C6H6 at 25°: furfural 3.56; 5-bromofurfural 3.37; 5-iodofurfural 3.29; 5-chiorofurfural 3.37; 5-nitrofurfural 3.46; 5-nitrofurfurylidene diacetate 4.26; the following values were found in dioxane: furfural 3.6, 5-iodofurrural 3.39. The results indicate that free rotation of the CHO group in furfural and its 5-halo derivatives is restricted and the mols. exist mainly in a conformation with the CHO-oxygen atom disposed toward the ring O atom.

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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 Reevaluation of benzyltrimethylammonium dichloroiodide, previously reported to be a selective iodinating agent, the main research direction is benzyltrimethylammonium dichloroiodate chlorination agent; thiophenecarboxylate chloro.Quality Control of 5-Iodo-2-furaldehyde.

Benzyltrimethylammonium dichloroiodate [N,N,N-trimethylbenzenemethanaminium dichloroiodate(1-)], previously reported as an iodinating agent of thiophenes, appears to be a selective chlorinating agent of both thienyl and furyl derivatives containing a carbonyl group. Treatment of Me 2-thiophenecarboxylate with benzyltrimethylammonium dichloroiodate/ZnCl2/AcOH gave Me 5-iodo-2-thiophenecarboxylate, Me 4,5-diiodo-2-thiophenecarboxylate, and Me 5-chloro-2-thiophenecarboxylate.

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Recommanded Product: 2689-65-8. 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 Synthesis and in vitro antimicrobial activity screening of new 3-acetyl-2,5-disubstituted-1,3,4-oxadiazoline derivatives. Author is Popiolek, Lukasz; Biernasiuk, Anna; Paruch, Kinga; Malm, Anna; Wujec, Monika.

Thirteen new 3-acetyl-2,5-disubstituted-1,3,4-oxadiazoline derivatives were synthesized from corresponding hydrazide-hydrazones of isonicotinic acid in the reaction with acetic anhydride. The obtained compounds were identified with the use of spectral methods (IR, 1H-NMR, 13C-NMR, MS). In vitro antimicrobial activity screening of synthesized compounds against a panel of bacteria and fungi revealed interesting antibacterial and antifungal activity of tested 1,3,4-oxadiazoline derivatives, which is comparable to that of commonly used antimicrobial agents.

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