Month: October 2022

The author of 《The strength and directionality of a halogen bond are co-determined by the magnitude and size of the σ-hole [Erratum to document cited in CA160:690906]》 were Kolar, Michal; Hostas, Jiri; Hobza, Pavel. And the article was published in Physical Chemistry Chemical Physics in 2015. Application In Synthesis of 2-Fluoro-5-iodopyrimidine The author mentioned the following in the article:

Corrections are provided for the misuse of the term “”directionality””; the numerical results are unaffected. After reading the article, we found that the author used 2-Fluoro-5-iodopyrimidine(cas: 697300-79-1Application In Synthesis of 2-Fluoro-5-iodopyrimidine)

2-Fluoro-5-iodopyrimidine(cas: 697300-79-1) is one of organic iodides. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles.Application In Synthesis of 2-Fluoro-5-iodopyrimidine

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

In 2016,Abbasi, M. A.; Tariq, S.; Aziz-ur-Rehman; Siddiqui, S. Z.; Ahmad, I.; Malik, R.; Shah, S. A. A. published 《Synthesis of some new N-substituted-N-(2,3-dihydro-[1,4]benzodioxin-6-yl)-4-acetamidobenzenesulfonamides as valuable antibacterial agents》.Russian Journal of Bioorganic Chemistry published the findings.Name: 1,2-Diiodoethane The information in the text is summarized as follows:

The aim of the present research was to investigate the antibacterial potential of some N-substituted sulfonamides bearing a benzodioxane moiety, I (R = Et, iso-Pr, CH2Ph, 2-ClC6H4CH2, etc.). The synthesis was started by reacting N-2,3-dihydrobenzo[1,4]dioxin-6-amine with 4-acetamidobenzene-1-sulfonyl chloride in the presence of 10% aqueous Na2CO3 solution to yield N-(2,3-dihydrobenzo[1,4]-dioxin-6-yl)-4-acetamidobenzenesulfonamide (II). II was further reacted with alkyl/aralkyl halides in DMF and lithium hydride as a base to obtain products I. All the synthesized compounds were characterized by spectral data (IR, 1H NMR, EI-MS, and HR-MS). The compounds were tested for antibacterial activity and most of them exhibited potent therapeutic potential against various Gram-neg. and Gram-pos. strains. The results came from multiple reactions, including the reaction of 1,2-Diiodoethane(cas: 624-73-7Name: 1,2-Diiodoethane)

1,2-Diiodoethane(cas: 624-73-7) is one of organic iodides. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond. 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.Name: 1,2-Diiodoethane

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

In 2019,Journal of the American Chemical Society included an article by Lyu, Hairong; Zhang, Jie; Yang, Jingting; Quan, Yangjian; Xie, Zuowei. HPLC of Formula: 589-87-7. The article was titled 《Catalytic Regioselective Cage B(8)-H Arylation of o-Carboranes via “”Cage-Walking”” Strategy》. The information in the text is summarized as follows:

A proof-of-concept example of catalytic regioselective cage B(8)-H functionalization of o-carboranes was disclosed for the 1st time. Under the help of an acylamino directing group at cage B(3), B(8)-arylated, B(4,7,8)-triarylated and B(4,7,8)-trifluorinated o-carborane derivatives were conveniently prepared From isolation of a key intermediate, D labeling experiments and DFT calculations, a reaction mechanism involving a high-valent Pd induced cage-walking from B(4) to B(8) vertex is proposed to account for the regioselective B(8)-H activation. In the experiment, the researchers used many compounds, for example, 1-Bromo-4-iodobenzene(cas: 589-87-7HPLC of Formula: 589-87-7)

1-Bromo-4-iodobenzene(cas: 589-87-7) has been employed as reagent for in situ desilylation and coupling of silylated alkynes, as starting reagent in the total syntheses of ent-conduramine A and ent-7-deoxypancratistatin (alkaloids), as substrate in copper-free Sonogashira coupling in aqueous acetone in synthesis of β,β,dibromostyrenesHPLC of Formula: 589-87-7

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

The author of 《A novel strategy of transferring NIS protein to cells using extracellular vesicles leads to increase in iodine uptake and cytotoxicity》 were Son, Seung Hyun; Gangadaran, Prakash; Ahn, Byeong-Cheol. And the article was published in International Journal of Nanomedicine in 2019. Recommanded Product: 1-Iodopyrrolidine-2,5-dione The author mentioned the following in the article:

Background: This study was designed to explore a novel approach for transferring NIS protein to cells using extracellular vesicle (EV) and enhancing iodine avidity in hepatocellular carcinoma (HCC) cells. Methods: We transfected the HCC cells (Huh7) with NIS gene, designated as Huh7/NIS, and isolated the EVs from them. Presence of NIS protein in EVs and EV-mediated transport of NIS protein to recipient Huh7 cells were tested using Western blotting. We also examined radioiodine uptake in Huh7 cells treated with EV-Huh7/NIS. Results: Successful transfer of NIS protein into Huh7 cells was confirmed by WB and microscopy. EVs showed high levels of NIS protein in them. Treatment of Huh7 cells with EV-Huh7/NIS increased the NIS protein level and enhanced 125I uptake in recipient Huh7 cells. In addition, EV-huh7/NIS pre-treatment enhanced the cytotoxicity of 131I therapy against Huh7 cells by inducing increased DNA damage/increased γH2A.X foci formation. Conclusion: This is the first-of-its-kind demonstration of successful transportation of the NIS protein to cells via EVs, which increased radioiodine uptake. This approach can revert radioiodine-resistant cancers into radioiodine-sensitive cancers.1-Iodopyrrolidine-2,5-dione(cas: 516-12-1Recommanded Product: 1-Iodopyrrolidine-2,5-dione) was used in this study.

1-Iodopyrrolidine-2,5-dione(cas: 516-12-1) is used in the preparation of vinyl sulfones from olefins and benzenesulfinic acid. It acts as a source for I+ and involved in Hunsdiecker reactions for the conversion of cinnamic acids, and propiolic acids to the corresponding alfa-halostyrenes and 1-halo-1-alkynes respectively. Recommanded Product: 1-Iodopyrrolidine-2,5-dione

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

《Polarity Umpolung Strategy for the Radical Alkylation of Alkenes》 was published in Angewandte Chemie, International Edition in 2020. These research results belong to Liu, Jige; Wu, Shuo; Yu, Jiajia; Lu, Chenxi; Wu, Zhen; Wu, Xinxin; Xue, Xiao-Song; Zhu, Chen. SDS of cas: 301673-14-3 The article mentions the following:

Free radical mediated alkylation of alkenes is a challenging and largely unmet goal. Disclosed here is a conceptually novel “”polarity umpolung”” strategy for radical alkylation of alkenes using a portfolio of easily accessed, difunctional alkylating reagents. This strategy is achieved by substituting inherently nucleophilic alkyl radicals with electrophilic sulfone-bearing surrogates, thus inverting the usual mode of reactivity. Along with alkylation, either an heteroaryl or oximino group is concurrently incorporated into the alkenes by a consecutive docking and migration process, leading to valuable products. The reaction displays a broad functional-group tolerance under mild reaction conditions. The protocol opens new vistas for the late-stage modification of complex natural products and drug mols. containing alkene moieties. The experimental part of the paper was very detailed, including the reaction process of tert-Butyl 4-iodopiperidine-1-carboxylate(cas: 301673-14-3SDS of cas: 301673-14-3)

tert-Butyl 4-iodopiperidine-1-carboxylate(cas: 301673-14-3) is one of organic iodides. Organic iodides are used in veterinary products (Organic Iodide Powder) as a nutritional source of iodine. In the chemical industry, alkyl iodides serve as excellent alkylating agents and, specifically, methyl iodide is used as a methylating agent in the synthesis of various pharmaceutical drugs. Oceanic alkyl iodides are believed to be the principal source of atmospheric iodine.SDS of cas: 301673-14-3

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

《Synthesis and Structure of Tin and Germanium Complexes as Precursors Containing Alkoxyaminoalkoxide Ligands for Thin Film Transistors》 was published in European Journal of Inorganic Chemistry in 2020. These research results belong to Lee, Ga Yeon; Lee, Ji Hun; Han, Seong Ho; Park, Bo Keun; Son, Seung Uk; Kim, Chang Gyoun; Jeon, Dong Ju; Chung, Taek-Mo. HPLC of Formula: 1774-47-6 The article mentions the following:

This paper describes the preparation of four novel Sn and Ge complexes containing alkoxyaminoalkoxide type ligands {L1H = 1-[methoxy(methyl)amino]-2-methylpropan-2-ol; L2H = 1-[methoxy(methyl)amino]-2-methylbutan-2-ol} for potential use as precursors for thin film transistors. All compounds were prepared at room temperature by stirring a solution containing Sn(btsa)2 [btsa = bis(trimethylsilyl)amide] or Ge(btsa)2 with two equivalent of L1H or L2H to form Sn(L1)2 (1), Sn(L2)2 (2), Ge(L1)2 (3) and Ge(L2)2 (4). All of the complexes were characterized by NMR and FTIR spectroscopy as well as elemental and thermogravimetric analyses. When the more sym. and compact ligand L1H was applied, solid products 1 and 3 were generated and their structures were studied using x-ray diffraction. Applying the strategy of ligand design at the mol. level, the sym. ligand was changed to an asym. one, replacing one of the two neighboring Me groups of the amino alc. group with an Et group, and forming liquid complexes 2 and 4 for both metals. In addition to this study using Trimethylsulfoxonium iodide, there are many other studies that have used Trimethylsulfoxonium iodide(cas: 1774-47-6HPLC of Formula: 1774-47-6) was used in this study.

Trimethylsulfoxonium iodide(cas: 1774-47-6) reacts with sodium hydride to prepare dimethyloxosulfonium methylide, which is used as a methylene-transfer reagent in synthetic chemistry. It is used to prepare ylide, which reacts with carbonyl compounds to get epoxides. Further, it reacts with alfa,beta-unsaturated esters to get cyclopropyl esters.HPLC of Formula: 1774-47-6

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

《Triptycenyl Sulfide: A Practical and Active Catalyst for Electrophilic Aromatic Halogenation Using N-Halosuccinimides》 was published in Journal of the American Chemical Society in 2020. These research results belong to Nishii, Yuji; Ikeda, Mitsuhiro; Hayashi, Yoshihiro; Kawauchi, Susumu; Miura, Masahiro. Recommanded Product: 516-12-1 The article mentions the following:

A Lewis base catalyst Trip-SMe (Trip = triptycenyl) for electrophilic aromatic halogenation using N-halosuccinimides (NXS) is introduced. In the presence of an appropriate activator (as a noncoordinating-anion source), a series of unactivated aromatic compounds were halogenated at ambient temperature using NXS. This catalytic system was applicable to transformations that are currently unachievable except for the use of Br2 or Cl2: e.g., multihalogenation of naphthalene, regioselective bromination of BINOL, etc. Controlled experiments revealed that the triptycenyl substituent exerts a crucial role for the catalytic activity, and kinetic experiments implied the occurrence of a sulfonium salt [Trip-S(Me)Br][SbF6] as an active species. Compared to simple dialkyl sulfides, Trip-SMe exhibited a significant charge-separated ion pair character within the halonium complex whose structural information was obtained by the single-crystal X-ray anal. A preliminary computational study disclosed that the π system of the triptycenyl functionality is a key motif to consolidate the enhancement of electrophilicity. In the experiment, the researchers used 1-Iodopyrrolidine-2,5-dione(cas: 516-12-1Recommanded Product: 516-12-1)

1-Iodopyrrolidine-2,5-dione(cas: 516-12-1) is used in the preparation of vinyl sulfones from olefins and benzenesulfinic acid. It acts as a source for I+ and involved in Hunsdiecker reactions for the conversion of cinnamic acids, and propiolic acids to the corresponding alfa-halostyrenes and 1-halo-1-alkynes respectively. Recommanded Product: 516-12-1

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

《Green and Efficient Liquid-Phase Exfoliation of BiI3 Nanosheets for Catalytic Carbon-Carbon Cross-Coupling Reactions》 was published in ACS Sustainable Chemistry & Engineering in 2020. These research results belong to Wang, Huiyong; Song, Tao; Su, Xin; Li, Zhiyong; Wang, Jianji. Quality Control of 4-Iodobenzoic acid The article mentions the following:

BiI3 nanosheet dispersions were prepared by ultrasound-mediated exfoliation of BiI3 in the green solvents Me salicylate, triacetin, di-Et phthalate, Et benzoate, or in mixtures of the solvents. BiI3 nanosheets were formed in up to 30% yields and as dispersions containing up to 1.56 mg/mL of BiI3; the thickness of the BiI3 nanosheets is 5-10 nm and their lateral dimensions are around 1μm. Solvent-cosolvent interactions in the mixed solvents are a critical factor in the liquid-phase exfoliation. The BiI3 nanosheets were used as a catalyst for the Suzuki coupling of aryl iodides with phenylboronic acid mediated by TMEDA and KOH in THF to yield 4-substituted biphenyls in 75-91% yields. The experimental part of the paper was very detailed, including the reaction process of 4-Iodobenzoic acid(cas: 619-58-9Quality Control of 4-Iodobenzoic acid)

4-Iodobenzoic acid(cas: 619-58-9) belongs to organic iodides. Organic iodides are used in veterinary products (Organic Iodide Powder) as a nutritional source of iodine.Quality Control of 4-Iodobenzoic acid In the chemical industry, alkyl iodides serve as excellent alkylating agents and, specifically, methyl iodide is used as a methylating agent in the synthesis of various pharmaceutical drugs.

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

《Self-assembly of coordination polyhedra with highly entangled faces induced by metal-acetylene interactions》 was published in Angewandte Chemie, International Edition in 2020. These research results belong to Domoto, Yuya; Abe, Masahiro; Kikuchi, Takashi; Fujita, Makoto. HPLC of Formula: 591-18-4 The article mentions the following:

The self-assembly of nanostructures is dominated by a limited number of strong coordination elements. Herein, we show that metal-acetylene π-coordination of a tripodal ligand (L) with acetylene spacers gave an M3L2 double-propeller motif (M=CuI or AgI), which dimerized into an M6L4 interlocked cage (M=CuI). Higher (M3L2)n oligomers were also selectively obtained: an M12L8 truncated tetrahedron (M=CuI) and an M18L12 truncated trigonal prism (M=AgI), both of which contain the same double-propeller motif. The higher oligomers exhibit multiply entangled facial structures that are classified as a trefoil knot and a Solomon link. The inner cavities of the structures encapsulate counter anions, revealing a potential new strategy towards the synthesis of functional hollow structures that is powered by mol. entanglements. The experimental process involved the reaction of 1-Bromo-3-iodobenzene(cas: 591-18-4HPLC of Formula: 591-18-4)

1-Bromo-3-iodobenzene(cas: 591-18-4) has been used in the preparation of 1-(3′-bromophenyl)-3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodec-1-ene and 1-(3′-bromophenyl)-3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooct-1-ene.HPLC of Formula: 591-18-4 Further, it is involved in the preparation of oxygen-tethered 1,6-enynes.

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

《meta-Selective C-H Arylation of Fluoroarenes and Simple Arenes》 was written by Liu, Luo-Yan; Qiao, Jennifer X.; Yeung, Kap-Sun; Ewing, William R.; Yu, Jin-Quan. Name: 1-Chloro-3-iodobenzene And the article was included in Angewandte Chemie, International Edition in 2020. The article conveys some information:

Fluorine is known to promote ortho-C-H metalation. Based upon this reactivity, we employed an activated norbornene that traps the ortho-palladation intermediate and is then relayed to the meta position, leading to meta-selective C-H arylation of fluoroarenes. Deuterium experiment suggests that this meta-arylation is initiated by ortho C-H activation and the catalytic cycle is terminated by C-2 protonation. A dual-ligand system is crucial for the observed high reactivity and site selectivity. Applying this approach to simple benzene or other arenes also affords arylation products with good yield and site selectivity. In the experiment, the researchers used many compounds, for example, 1-Chloro-3-iodobenzene(cas: 625-99-0Name: 1-Chloro-3-iodobenzene)

1-Chloro-3-iodobenzene(cas: 625-99-0) belongs to organic iodides. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. Name: 1-Chloro-3-iodobenzene Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles.

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