Category: iodides-buliding-blocks

SDS of cas: 589-87-7In 2021 ,《On-Surface Formation of Cyano-Vinylene Linked Chains by Knoevenagel Condensation》 was published in Chemistry – A European Journal. The article was written by Au-Yeung, Kwan Ho; Kuehne, Tim; Becker, Daniel; Richter, Marcus; Ryndyk, Dmitry A.; Cuniberti, Gianaurelio; Heine, Thomas; Feng, Xinliang; Moresco, Francesca. The article contains the following contents:

The rapid development of on-surface synthesis provides a unique approach toward the formation of carbon-based nanostructures with designed properties. Herein, we present the on-surface formation of CN-substituted phenylene vinylene chains on the Au(111) surface, thermally induced by annealing the substrate stepwise at temperatures between 220°C and 240°C. The reaction is investigated by scanning tunneling microscopy and d. functional theory. Supported by the calculated reaction pathway, we assign the observed chain formation to a Knoevenagel condensation between an aldehyde and a methylene nitrile substituent. The experimental part of the paper was very detailed, including the reaction process of 1-Bromo-4-iodobenzene(cas: 589-87-7SDS of cas: 589-87-7)

1-Bromo-4-iodobenzene(cas: 589-87-7) is mainly used as the OLED pharmaceutical intermediate, as reagent for in situ desilylation and coupling of silylated alkynes, as substrate in copper-free Sonogashira coupling in aqueous acetone..SDS of cas: 589-87-7 It is also used in synthesis of β,β,dibromostyrenes, as starting reagent in the total syntheses of ent-conduramine A and ent-7-deoxypancratistatin (alkaloids)

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

Related Products of 1774-47-6In 2021 ,《Lewis acid-catalyzed [3 + 2] annulations of oxindole based spirocyclic donor-acceptor cyclopropanes with ynamides》 was published in Organic & Biomolecular Chemistry. The article was written by Zhang, Dongxin; Cheng, Qihang; Chen, Lvjia; Deng, Huiqing; Cai, Hu; Zhang, Qian-Feng. The article contains the following contents:

The [3 + 2] annulations of oxindole based spirocyclic donor-acceptor cyclopropanes and ynamides catalyzed by copper triflate was developed for the synthesis of biol. important spirocyclopenteneoxindoles. These reactions tolerated a wide scope of substrates and provided the desired products in good to high yields (up to 90%) with up to >40 : 1 diastereoselectivities under mild conditions.Trimethylsulfoxonium iodide(cas: 1774-47-6Related Products of 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.Related Products of 1774-47-6

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

Quality Control of 1-IodonaphthaleneIn 2021 ,《Single-molecule junction formation in break-junction measurements》 was published in Journal of Physical Chemistry Letters. The article was written by Fu, Tianren; Frommer, Kathleen; Nuckolls, Colin; Venkataraman, Latha. The article contains the following contents:

The scanning tunneling microscope-based break-junction (STM-BJ) technique is the most common method used to study the electronic properties of single-mol. junctions. It relies on repeatedly forming and rupturing a Au contact in an environment of the target mols. The probability of junction formation is typically very high (∼70-95%), prompting questions relating to how the nanoscale structure of the Au electrode before the metal point contact ruptures alters junction formation. Here we analyze conductance traces measured with the STM-BJ setup by combining correlation anal. and multiple machine learning tools, including gradient-boosted trees and neural networks. We show that two key features describing the Au-Au contact prior to rupture determine the extent of contact relaxation (snapback) and the probability of junction formation. Importantly, our data strongly indicate that mol. junctions are formed prior to the rupture of the Au-Au contact, explaining the high probability of junction formation observed in room-temperature solution measurements. The results came from multiple reactions, including the reaction of 1-Iodonaphthalene(cas: 90-14-2Quality Control of 1-Iodonaphthalene)

1-Iodonaphthalene(cas: 90-14-2) 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.Quality Control of 1-Iodonaphthalene

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

Computed Properties of C5H4INIn 2021 ,《One-Pot Synthesis of 11C-Labelled Primary Benzamides via Intermediate [11C]Aroyl Dimethylaminopyridinium Salts》 appeared in Chemistry – A European Journal. The author of the article were Ferrat, Melodie; Dahl, Kenneth; Schou, Magnus. The article conveys some information:

Electrophilic 11C-labeled aroyl dimethylaminopyridinium salts, obtained in situ by carbonylative cross-coupling of aryl halides with [11C]carbon monoxide, were prepared for the first time and shown to be valuable intermediates in the synthesis of primary [11C]benzamides. The methodol. furnished a set of benzamide model compounds, including the two poly (ADP-ribose) polymerase (PARP) inhibitors niraparib and veliparib, in moderate to excellent radiochem. yields. In addition to providing a convenient and practical route to primary [11C]benzamides, the current method paves the way for future application of [11C]aroyl dimethylaminopyridinium halide salts in positron emission tomog. (PET) tracer synthesis. The experimental process involved the reaction of 4-Iodopyridine(cas: 15854-87-2Computed Properties of C5H4IN)

4-Iodopyridine(cas: 15854-87-2) is a halogenated heterocycle that is a building block for proteomics research. 4-Iodopyridine is used as a reagent in the synthesis of indazolylamides as glucocorticoid receptor agonists.Computed Properties of C5H4IN

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

Computed Properties of C4H4INO2In 2020 ,《Efficient Polymer Solar Cells Based on New Random Copolymers with Porphyrin-Incorporated Side Chains》 appeared in Macromolecular Chemistry and Physics. The author of the article were Liu, Zhixin; Huang, Zhuohao; Chen, Yuzhuo; Xu, Tao; Yu, Hao; Guo, Xia; Yan, Lei; Zhang, Maojie; Wong, Wai-Yeung; Wang, Xingzhu. The article conveys some information:

Two new wide bandgap block copolymers (PL1 and PL2) with porphyrin-incorporated side chains are designed and used as electron donors for solution-processed bulk heterojunction polymer solar cells. The photophys., electrochem., and photovoltaic properties, charge transport mobility and film morphol. of these 2 block copolymers are studied. Detailed studies reveal that the different alkyl groups and electron-withdrawing substituents on the porphyrin pendant units have significant influence on the polymer solubility, absorption energy level, band gap, and charge separation in the bulk-heterojunction thin films, and thus the overall photovoltaic performances. Organic photovoltaic devices derived from these copolymers and ([6,6]-phenyl-C71-butyric acid Me ester) (PC71BM) acceptor show the best power conversion efficiencies of 5.83% and 7.14%, resp. The inclusion of a certain proportion of side chain porphyrin group as a pendant in the traditional donor-acceptor (D-A) type polymer can broaden the mol. absorption range and become a full-color absorbing mol. The size of the porphyrin pendant also has an obvious effect on the properties of the mol. The results came from multiple reactions, including the reaction of 1-Iodopyrrolidine-2,5-dione(cas: 516-12-1Computed Properties of C4H4INO2)

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. Computed Properties of C4H4INO2

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

Thorat, Vijaykumar H.; Aman, Hasil; Tsai, Yu-Lin; Pallikonda, Gangaram; Chuang, Gary Jing; Hsieh, Jen-Chieh published an article in 2021. The article was titled 《Cobalt-catalyzed coupling reactions of 2-halobenzamides with alkynes: investigation of ligand-controlled dual pathways》, and you may find the article in Organic Chemistry Frontiers.SDS of cas: 88-67-5 The information in the text is summarized as follows:

The Co-catalyzed reactions of 2-halobenzamides and alkynes to form isoquinolones or 2-vinyl benzamides were described here. The formation of the two selective products was fully controlled by adopted ligands. A study of the mechanism demonstrated that these two reactions proceed through different pathways. The radical process and the two-electron transfer activation of the C-X bond were resp. proposed for these two reactions. In the experimental materials used by the author, we found 2-Iodobenzoic acid(cas: 88-67-5SDS of cas: 88-67-5)

2-Iodobenzoic acid(cas: 88-67-5) belongs to organic iodides. 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.SDS of cas: 88-67-5

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

Tague, Andrew J.; Putsathit, Papanin; Riley, Thomas V.; Keller, Paul A.; Pyne, Stephen G. published their research in ACS Medicinal Chemistry Letters in 2021. The article was titled 《Positional Isomers of Biphenyl Antimicrobial Peptidomimetic Amphiphiles》.Quality Control of 3-Iodophenol The article contains the following contents:

Small-mol. antimicrobial peptidomimetic amphiphiles represent a promising class of novel antimicrobials with the potential for widespread therapeutic application. To investigate the role of spatial positioning for key hydrophobic and hydrophilic groups on the antimicrobial efficacy and selectivity, positional isomers of the lead biphenyl antimicrobial peptidomimetic compound 1 were synthesized and subjected to microbial growth inhibition and mammalian toxicity assays. Positional isomer 4 exhibited 4-8x increased efficacy against the pathogenic Gram-neg. bacteria Pseudomonas aeruginosa and Escherichia coli (MIC = 2 μg/mL), while isomers 2, 3, and 7 exhibited a 4x increase in activity against Acinetobacter baumannii (MIC = 4 μg/mL). Changes in mol. shape had a significant impact on Gram-neg. antibacterial efficacy and the resultant spectrum of activity, whereas all structural isomers exhibited significant efficacy (MIC = 0.25-8 μg/mL) against Gram-pos. bacterial pathogens (e.g., methicillin-resistant Staphylococcus aureus, Streptococcus pneumoniae, and Enterococcus faecalis). In the experimental materials used by the author, we found 3-Iodophenol(cas: 626-02-8Quality Control of 3-Iodophenol)

3-Iodophenol(cas: 626-02-8) 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. Quality Control of 3-Iodophenol 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

Lee, Seung Cheol; Son, Jeong-Yu; Kim, Jin Young; Eom, Hyeonsik; Jang, Seong Bin; Lee, Phil Ho published their research in Advanced Synthesis & Catalysis in 2021. The article was titled 《Regioselective and Chemodivergent Synthesis of Azulenolactones and Azulenolactams from Rhodium(III)-Catalyzed Reactions of Azulenecarboxamides with Sulfoxonium Ylides》.Product Details of 1774-47-6 The article contains the following contents:

A regioselective and chemodivergent synthetic approach for azulenolactones I (R1 = H, 8-Me, 8-Ph; R2 = H, Cl, Me; R3 = Ph, 3-MeC6H4, 4-ClC6H4, etc.; R4 = H, Me, Ph, 3-MeOC6H4) and azulenolactams II (R1 = H, 8-Me; R2 = H, Cl, Me; R3 = nBu, Ph, 3-MeC6H4, etc.; R4 = H, Me, Ph, 3-MeOC6H4) as a new scaffold was demonstrated through Rh(III)-catalyzed reaction of N-methoxyazulene-1-carboxamides with sulfoxonium ylides. Sulfoxonium ylides that act as a precursor of secondary carbene was described, leading to the selective formation of azulenolactones and azulenolactams bearing two substituents on a newly introduced double bond. This method demonstrated functionalization of less reactive 2-position of azulene to overcome the natural reactivity. In the experiment, the researchers used many compounds, for example, Trimethylsulfoxonium iodide(cas: 1774-47-6Product Details of 1774-47-6)

Trimethylsulfoxonium iodide(cas: 1774-47-6) is a sulfoxonium salt. It is used to generate dimethyloxosulfonium methylide by reaction with sodium hydride. The latter compound is used as a methylene-transfer reagent, and is used to prepare epoxides.Product Details of 1774-47-6

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

《C14H10 polycyclic aromatic hydrocarbon formation by acetylene addition to naphthalenyl radicals observed》 was written by Yang, Jeehyun; Smith, Mica C.; Prendergast, Matthew B.; Chu, Te-Chun; Green, William H.. Synthetic Route of C10H7I And the article was included in Physical Chemistry Chemical Physics in 2021. The article conveys some information:

The formation of polycyclic aromatic hydrocarbons (PAHs) during combustion has a substantial impact on environmental pollution and public health. The hydrogen-abstraction-acetylene-addition (HACA) mechanism is expected to be a significant source of larger PAHs containing more than two rings. In this study, the reactions of 1-naphthalenyl and 2-naphthalenyl radicals with acetylene (C2H2) are investigated using VUV photoionization time-of-flight mass spectrometry at 500 to 800 K, 15 to 50 torr, and reaction times up to 10 ms. Our exptl. conditions allow us to probe the Bittner-Howard and modified Frenklach HACA routes, but not routes that require multiple radicals to drive the chem. The kinetic measurements are compared to a temperature-dependent kinetic model constructed using quantum chem. calculations and accounting for chem.-activation and fall-off effects. We measure significant quantities of C14H10 (likely phenanthrene and anthracene), as well as 2-ethynylnaphthalene (C12H8), from the reaction of the 2-naphthalenyl radical with C2H2; these results are consistent with the predictions of the kinetic model and the HACA mechanism, but contradict a previous exptl. study that indicated no C14H10 formation in the 2-naphthalenyl + C2H2 reaction. In the 1-naphthalenyl radical + C2H2 reaction system, the primary product measured is C12H8, consistent with the predicted formation of acenaphthylene via HACA. The present work provides direct exptl. evidence that single-radical HACA can be an important mechanism for the formation of PAHs larger than naphthalene, validating a common assumption in combustion models. The experimental part of the paper was very detailed, including the reaction process of 1-Iodonaphthalene(cas: 90-14-2Synthetic Route of C10H7I)

1-Iodonaphthalene(cas: 90-14-2) 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.Synthetic Route of C10H7I

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

《The Value of Failure: A Student-Driven Course-Based Research Experience in an Undergraduate Organic Chemistry Lab Inspired by an Unexpected Result》 was written by Heller, Stephen T.; Duncan, Andrew P.; Moy, Cheryl L.; Kirk, Sarah R.. Application In Synthesis of 1-Iodopyrrolidine-2,5-dione And the article was included in Journal of Chemical Education in 2020. The article conveys some information:

Research experiences are widely understood to be valuable for the intellectual and professional development of undergraduate science students. Course-based undergraduate research experiences (CUREs) have become popular as a means of engaging large numbers of students in research by leveraging institutional supports for laboratory courses. At Willamette University, we have adapted a guided inquiry experiment that gave unexpected results into a CURE in the lower-division organic chem. curriculum. This experience has engaged several cohorts of students in a seven-week investigation focused on identifying the mechanistic origin of a nonstereospecific hydroxybromination of Z-stilbene, an observation that contradicts how this addition reaction is presented in standard organic chem. curricula. Each year, the cohort exptl. “”discovers”” the anomalous stereochem. outcome of the addition reaction. Over the next three lab sessions, students execute their experiments, reconsidering and revising their hypotheses as their data dictate. The experience culminates in formal oral and written presentations of results. Student perceptions of the pedagogical value of the CURE, the effect of the lab on their self-efficacy, and the novelty of research being conducted were assessed in multiple class cohorts, while faculty perceptions of changes in student behavior and skill were also documented. The experimental process involved the reaction of 1-Iodopyrrolidine-2,5-dione(cas: 516-12-1Application In Synthesis of 1-Iodopyrrolidine-2,5-dione)

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. Application In Synthesis of 1-Iodopyrrolidine-2,5-dione

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