Tag: 300-400

Diiododurene: four centrosymmetric molecules in general positions was written by Britton, Doyle;Gleason, William B.. And the article was included in Acta Crystallographica, Section C: Crystal Structure Communications in 2003.Safety of 1,4-Diiodo-2,3,5,6-tetramethylbenzene This article mentions the following:

Diiododurene (1,4-diodo-2,3,5,6-tetramethylbenzene), C₁₀H₁₂I₂, packs with four mols. in the asym. unit. All four of these mols. violate Kitaigorodsky’s suggestion that mols. with centers of symmetry will lie on crystallog. centers of symmetry. There is 5.6% disorder at one of the sites. Most of the I atoms are in contact with other I atoms, but only six of the I···I contacts are shorter than 4.2 Å. Of these six contacts, one set of three contacts forms a triangular set in which all of the I···I distances are <3.9 Å. Crystallog. data are given. In the experiment, the researchers used many compounds, for example, 1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1Safety of 1,4-Diiodo-2,3,5,6-tetramethylbenzene).

1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1) belongs to iodide derivatives. Generally organic iodides can be divided into two classes of alkyl iodides and aryl iodides. Typical reactions of alkyl iodides include nucleophilic substitution, elimination, reduction, and the formation of organometallics. Polyiodoorganic compounds are sometimes employed as X-ray contrast agents, in fluoroscopy, a type of medical imaging. This application exploits the X-ray absorbing ability of the heavy iodine nucleus.Safety of 1,4-Diiodo-2,3,5,6-tetramethylbenzene

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Synthesis of imidazolo[5,4-b]carbazole-4,10-quinones was written by Desforges, Gwenaelle;Bossert, Cecile;Montagne, Cyril;Joseph, Benoit. And the article was included in Synlett in 2004.SDS of cas: 15813-09-9 This article mentions the following:

The preparation of imidazolo[5,4-b]carbazole-4,10-quinones I (R¹ = H, EtOCH₂; R² = H, Cl) is described. The key steps of the synthesis are selective halogen-metal exchange of the corresponding 4,5-diiodoimidazoles and subsequent addition of the organometallic compounds formed to the carbonyl group of Et 3-formylindole-2-carboxylate. In the experiment, the researchers used many compounds, for example, 4,5-Diiodo-1H-imidazole (cas: 15813-09-9SDS of cas: 15813-09-9).

4,5-Diiodo-1H-imidazole (cas: 15813-09-9) belongs to iodide derivatives. Organic iodides are organic compounds containing a carbon-iodine (C-I) bond. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond.SDS of cas: 15813-09-9

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Oxidation of Iodo- and Bromo-Substituted Polymethylbenzenes in the System PbO₂-CF₃COOH-CH₂Cl₂ was written by Sandzhieva, M. A.;Aryamova, E. S.;Sukharzhevskii, S. M.;Grinenko, E. V.;Vasilyev, A. V.. And the article was included in Russian Journal of Organic Chemistry in 2018.Formula: C10H12I2 This article mentions the following:

The oxidation of mono- and diiodo- and -bromo-substituted polymethylbenzenes (mesitylene and durene) in the system PbO₂-CF₃COOH-CH₂Cl₂ at room temperature (2-70 h) leads mainly to the formation of iodo- and bromobenzyl alcs. as result of oxidation of Me group. The reaction involves intermediate formation of haloarene radical cations. ESR study of these radical cations made it possible to determine the structure of their singly occupied MOs a₂ or b₁ and interpret their reactivity. In the experiment, the researchers used many compounds, for example, 1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1Formula: C10H12I2).

1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1) belongs to iodide derivatives. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles. Iodo alkanes participate in a variety of organic synthesis reactions, which include the Simmons–Smith reaction (cyclopropanation using iodomethane), Williamson ether synthesis, Wittig reaction, Grignard reaction, alkyl coupling reactions, and Wurtz reaction.Formula: C10H12I2

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Iodine(I) Reagents in Hydrochloric Acid-Catalyzed Oxidative Iodination of Aromatic Compounds by Hydrogen Peroxide and Iodine was written by Bedrac, Leon;Iskra, Jernej. And the article was included in Advanced Synthesis & Catalysis in 2013.Computed Properties of C10H12I2 This article mentions the following:

Hydrochloric acid activates the oxidative iodination of aromatic compounds with the iodine- hydrogen peroxide system through the formation of an iodine(I) compound as the iodinating reagent. Activation with hydrochloric acid is more powerful than that with sulfuric acid. The formation of dichloroiodic acid (HICl₂) with various forms of hydrogen peroxide was followed using UV spectroscopy. The HICl₂ was used as the iodinating reagent. In the preparative oxidative iodinaton of various aromatic compounds, hydrochloric acid was used in a catalytic amount and the iodine(I) reagent was formed in situ with 0.5 equivalent hydrogen peroxide and 0.5 equivalent mol. iodine. Two types of reactivity were observed in oxidative iodination with iodine(I) species catalyzed by hydrochloric acid: in the iodination of anisole better yields of iodination were observed with a smaller amount of hydrochloric acid, while on the contrary 4-tert-butyltoluene gave better yields of iodination upon increasing the amount of hydrochloric acid. Reactivity was further manipulated by the choice of the solvent (MeCN, trifluoroethanol, hexafluoro-2-propanol). In the experiment, the researchers used many compounds, for example, 1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1Computed Properties of C10H12I2).

1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1) belongs to iodide derivatives. Organoiodine compounds occur widely in organic chemistry, but are relatively rare in nature. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond.Computed Properties of C10H12I2

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Closely Stacked Oligo(phenylene ethynylene)s: Effect of π-Stacking on the Electronic Properties of Conjugated Chromophores was written by Jagtap, Subodh P.;Mukhopadhyay, Sukrit;Coropceanu, Veaceslav;Brizius, Glen L.;Bredas, Jean-Luc;Collard, David M.. And the article was included in Journal of the American Chemical Society in 2012.Related Products of 3268-21-1 This article mentions the following:

In this work, a bicyclo[4.4.1]undecane scaffold is used to hold oligo(phenylene ethynylene) units in a cofacially stacked arrangement along the entire length of the conjugated units. We study the impact that the resulting strong interchain interactions have on the photophys. properties. The length of the individual oligomer branches was varied from three to five rings to investigate the effect of conjugation on the electronic properties of the stacked segments. Absorption and fluorescence spectra were recorded and compared to those of the corresponding unstacked analogs. Time-dependent d. functional theory calculations were carried out and helped to rationalize the low-energy features present in the fluorescence spectra of the stacked systems. The calculations indicate that the low-energy emissions are due to the presence of excimer-like states. The stronger intensity of the low-energy fluorescence band observed in the five-ring stacked system compared to the three-ring analog is attributed to the smaller activation barrier that separates the local intrachain state and the excimer-like state in the former compound In the experiment, the researchers used many compounds, for example, 1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1Related Products of 3268-21-1).

1,4-Diiodo-2,3,5,6-tetramethylbenzene (cas: 3268-21-1) belongs to iodide derivatives. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles. A typical method for synthesis of aromatic iodides is diazotization of primary aromatic amines followed by treatment of potassium iodide. Aliphatic alcohols are converted to alkyl iodides by treating with hydrogen iodide.Related Products of 3268-21-1

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Metal-mediated base pairing in DNA involving the artificial nucleobase imidazole-4-carboxylate was written by Sandmann, Nikolas;Defayay, Denise;Hepp, Alexander;Mueller, Jens. And the article was included in Journal of Inorganic Biochemistry in 2019.SDS of cas: 15813-09-9 This article mentions the following:

The use of imidazole-4-carboxylate (X) as an artificial nucleobase in metal-mediated base pairing is reported. Towards this end, the corresponding deoxyribonucleoside was synthesized and structurally characterized as its sodium salt (sodium 1,2-dideoxy-1-(4-carboxyimidazol-1-yl)-D-ribofuranose). The deoxyribonucleoside was incorporated into different DNA duplexes (parallel-stranded and antiparallel-stranded), and their Cu(II)- and Ag(I)-binding behavior was investigated. It was shown that both X-Cu(II)-X and X-Ag(I)-X base pairs can be formed, with the former being more stabilizing than the latter. The formation of an X-Cu(II)-X base pair is accompanied by an increase in the duplex melting temperature of approx. 20 °C for antiparallel-stranded duplexes and of 12 °C for the parallel-stranded duplex under investigation. Imidazole-4-carboxylate represents the first imidazole-based nucleoside for Cu(II)-mediated base pairing. Moreover, it is the smallest nucleoside known to form stable Cu(II)-mediated base pairs. Structures of the X-Cu(II)-X and X-Ag(I)-X base pairs are proposed, too, based on mol. structures obtained using the model nucleobase 1-benzyl-1H-imidazole-4-carboxylate. In the experiment, the researchers used many compounds, for example, 4,5-Diiodo-1H-imidazole (cas: 15813-09-9SDS of cas: 15813-09-9).

4,5-Diiodo-1H-imidazole (cas: 15813-09-9) belongs to iodide derivatives. Typical reactions of alkyl iodides include nucleophilic substitution, elimination, reduction, and the formation of organometallics. Organoiodine lubricants can be used with titanium, stainless steels, and other metals which tend to seize up with conventional lubricants: organoiodine lubricants can be used in turbines and spacecraft, and as a cutting oil in machining.SDS of cas: 15813-09-9

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Migratory Hydrogenation of Terminal Alkynes by Base/Cobalt Relay Catalysis was written by Liu, Xufang;Liu, Bingxue;Liu, Qiang. And the article was included in Angewandte Chemie, International Edition in 2020.HPLC of Formula: 85356-68-9 This article mentions the following:

Migratory functionalization of alkenes has emerged as a powerful strategy to achieve functionalization at a distal position to the original reactive site on a hydrocarbon chain. However, an analogous protocol for alkyne substrates is yet to be developed. Herein, a base and cobalt relay catalytic process for the selective synthesis of (Z)-2-alkenes and conjugated E alkenes by migratory hydrogenation of terminal alkynes is disclosed. Mechanistic studies support a relay catalytic process involving a sequential base-catalyzed isomerization of terminal alkynes and cobalt-catalyzed hydrogenation of either 2-alkynes or conjugated diene intermediates. Notably, this practical non-noble metal catalytic system enables efficient control of the chemo-, regio-, and stereoselectivity of this transformation. In the experiment, the researchers used many compounds, for example, 1-Bromo-4-(2-iodoethyl)benzene (cas: 85356-68-9HPLC of Formula: 85356-68-9).

1-Bromo-4-(2-iodoethyl)benzene (cas: 85356-68-9) belongs to iodide derivatives. Organoiodine compounds occur widely in organic chemistry, but are relatively rare in nature. A typical method for synthesis of aromatic iodides is diazotization of primary aromatic amines followed by treatment of potassium iodide. Aliphatic alcohols are converted to alkyl iodides by treating with hydrogen iodide.HPLC of Formula: 85356-68-9

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com