Month: October 2022

Quality Control of 1,2-DiiodoethaneIn 2022 ,《Structural Reconstruction in Lead-Free Two-Dimensional Tin Iodide Perovskites Leading to High Quantum Yield Emission》 appeared in ACS Energy Letters. The author of the article were Ghimire, Sushant; Oldenburg, Kevin; Bartling, Stephan; Lesyuk, Rostyslav; Klinke, Christian. The article conveys some information:

The authors report a structural reconstruction-induced high photoluminescence quantum yield of 25% in colloidal 2-dimensional Sn iodide nanosheets that are synthesized by a hot-injection method. The as-synthesized red-colored nanosheets of octylammonium Sn iodide perovskites at room temperature transform to white hexagonal nanosheets upon washing or exposure to light. This structural change increases the bandgap from 2.0 to 3.0 eV, inducing a large Stokes shift and a broadband emission. Further, a long photoluminescence lifetime of ∼1 μs is measured for the nanosheets. Such long-lived broad and intense photoluminescence with a large Stokes shift is anticipated to originate from Sn iodide clusters that are formed during the structural reconstruction. The stereoactive 5s2 lone pair of Sn(II) ions perturbs the excited state geometry of the white hexagonal nanosheets and facilitates the formation of self-trapped excitons. Such broadband and intensely emitting metal halide nanosheets are promising for white light-emitting diodes. The experimental part of the paper was very detailed, including the reaction process of 1,2-Diiodoethane(cas: 624-73-7Quality Control of 1,2-Diiodoethane)

1,2-Diiodoethane(cas: 624-73-7) 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 1,2-Diiodoethane

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

HPLC of Formula: 15854-87-2In 2021 ,《Construction of supramolecular hyperbranched polymers based on a tetrathiafulvalene derivative: Self-assembly and charge transfer interaction with TCNQ》 was published in Tetrahedron Letters. The article was written by Li, Xing-Long; Qin, Jie; Jiang, Man; Chen, Meng-Ning; Wang, Rong-Zhou; Yu, Shengsheng; Wang, Hai-Ying; Xing, Ling-Bao. The article contains the following contents:

In the present work, a four naphthyl-armed tetrathiafulvalene derivative (TTFB) was designed and synthesized through one-step reaction. Based on the host-guest interaction between naphthyl and cucurbit[8]uril (CB[8]), supramol. hyperbranched polymers (SHPs) can be constructed in water, depending on hydrogen NMR spectra, UV-vis absorption spectroscopy and diffusion-ordered NMR spectroscopy. The self-assembly properties of the SHPs were further investigated by zeta potential analyzer, dynamic laser light scattering and transmission electron microscopy measurements, which exhibited pos. charged spherical structures with the diameter at ∼120 nm. More interestingly, the SHPs can interact with TCNQ (7,7,8,8-tetracyanoquinodimethane) to form charge transfer complexes through charge transfer interaction. Meanwhile, the self-assembly structures can be transformed from spherical structures to crosslinked nanoparticles in the charge transfer complexes state. The experimental part of the paper was very detailed, including the reaction process of 4-Iodopyridine(cas: 15854-87-2HPLC of Formula: 15854-87-2)

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.HPLC of Formula: 15854-87-2

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

《Ruthenium(II)-catalyzed synthesis of CF3-isoquinolinones via C-H activation/annulation of benzoic acids and CF3-imidoyl sulfoxonium ylides》 was written by Wen, Si; Zhang, Yuqing; Tian, Qingyu; Chen, Yanhui; Cheng, Guolin. Category: iodides-buliding-blocksThis research focused ontrifluoromethyl isoquinolinone preparation; benzoic acid trifluoromethyl sulfoxonium ylide activation annulation ruthenium catalyst. The article conveys some information:

A ruthenium(II)-catalyzed C-H activation/annulation reaction of benzoic acids and CF3-imidoyl sulfoxonium ylides enabled by weak O-coordination was achieved. A series of 3-trifluoromethyl-isoquinolinones I [R = Ph, 2-MeC6H4, CH2CH2Ph, etc.; R1 = 8-Me, 7-F, 6-I, etc.; R2 = F, CF2CF3, CF2CF2CF3] were synthesized in 37-75% yields under redox-neutral reaction conditions. In the experimental materials used by the author, we found 4-Iodobenzoic acid(cas: 619-58-9Category: iodides-buliding-blocks)

4-Iodobenzoic acid(cas: 619-58-9) belongs to organic iodides. Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond.Category: iodides-buliding-blocksIodo 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.

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

Recommanded Product: 3993-79-1On November 29, 2017 ,《Copper mediated coupling of 2-(piperazine)-pyrimidine iodides with aryl thiols using Cu(I)thiophene-2-carboxylate》 appeared in Tetrahedron Letters. The author of the article were Shrestha, Liza; Patel, Hardik J.; Kang, Yanlong; Sharma, Sahil; Chiosis, Gabriela; Taldone, Tony. The article conveys some information:

A copper-mediated synthesis of diaryl sulfides utilizing Cu(I)-thiophene-2-carboxylate (CuTC) is described. The use of CuTC as a soluble, non-basic catalyst in the coupling of aryl iodides and aryl thiols in the synthesis of synthetically advanced diaryl sulfides was demonstrated. This method allows for the successful coupling of challenging substrates including ortho-substituted and heteroaryl iodides and thiols. Addnl., most of the aryl iodide substrates used here contain the privileged piperazine scaffold bound to a pyrimidine, pyridine, or Ph ring and thus this method allows for the elaboration of complex piperazine scaffolds into mols. of biol. interest. The method described here enables the incorporation of late-stage structural diversity into diaryl sulfides containing the piperazine ring, thus enhancing the number and nature of derivatives available for SAR investigation. In addition to this study using 2-Amino-5-iodopyrimidin-4(1H)-one, there are many other studies that have used 2-Amino-5-iodopyrimidin-4(1H)-one(cas: 3993-79-1Recommanded Product: 3993-79-1) was used in this study.

2-Amino-5-iodopyrimidin-4(1H)-one(cas: 3993-79-1) belongs to anime. Reaction with nitrous acid (HNO2), which functions as an acylating agent that is a source of the nitrosyl group (―NO), converts aliphatic primary amines to nitrogen and mixtures of alkenes and alcohols corresponding to the alkyl group in a complex process. This reaction has been used for analytical determination of primary amino groups in a procedure known as the Van Slyke method.Recommanded Product: 3993-79-1

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

In 2020,Chemical Science included an article by Akporji, Nnamdi; Thakore, Ruchita R.; Cortes-Clerget, Margery; Andersen, Joel; Landstrom, Evan; Aue, Donald H.; Gallou, Fabrice; Lipshutz, Bruce H.. Synthetic Route of C24H20I2O4. The article was titled 《N2Phos – an easily made, highly effective ligand designed for ppm level Pd-catalyzed Suzuki-Miyaura cross couplings in water》. The information in the text is summarized as follows:

A new biaryl phosphine-containing ligand from an active palladium catalyst for ppm level Suzuki-Miyaura couplings to afford biaryls, was enabled by an aqueous micellar reaction medium. A wide array of functionalized substrates including aryl/heteroaryl bromides were amenable, as were, notably, chlorides. The catalytic system was both general and highly effective at low palladium loadings (1000-2500 ppm or 0.10-0.25 mol%). D. functional theory calculations suggested that greater steric congestion in N2Phos induced increased steric crowding around the Pd center, helping to destabilize the 2 : 1 ligand-Pd(0) complex more for N2Phos than for EvanPhos (and less bulky ligands), and thereby favoring formation of the 1 : 1 ligand-Pdo complex that is more reactive in oxidative addition to aryl chlorides. After reading the article, we found that the author used (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3Synthetic Route of C24H20I2O4)

(R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3) 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.Synthetic Route of C24H20I2O4

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

Kang, Seongbum; Cha, Inhwan; Han, Jeon Geon; Song, Changsik published an article in Materials Express. The title of the article was 《Electroactive polymer sensors for chiral amines based on optically active 1,1′-binaphthyls》.Synthetic Route of C24H20I2O4 The author mentioned the following in the article:

Mol. chirality is vital in biol. functions and discriminating such chirality is important in organic synthesis, bio-synthesis, medicinal chem., and drug development. The authors developed electroactive chiral sensors by incorporating binaphthol moieties into the polymer main chains. The binaphthyl scaffold of the binaphthol moiety recognizes one form of chirality from the other, and its phenol groups play a vital role in the charge transporting mechanism. Aiming for chiral amine sensors, the authors synthesized binaphthol-containing electropolymerizable monomers and polymerized to produce proton-dopable chiral polymers, which were characterized by cyclic voltammetry, potentiometry, and in situ conductivity measurements. Chiral discriminating ability of the resulting polymers was tested and their sensing mechanism is proposed. In the experiment, the researchers used many compounds, for example, (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3Synthetic Route of C24H20I2O4)

(R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3) belongs to 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.Synthetic Route of C24H20I2O4

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

In 2019,Organic Letters included an article by Krishnamurti, Vinayak; Barrett, Colby; Ispizua-Rodriguez, Xanath; Coe, Matthew; Prakash, G. K. Surya. Application of 88-67-5. The article was titled 《Aqueous Base Promoted O-Difluoromethylation of Carboxylic Acids with TMSCF2Br: Bench-Top Access to Difluoromethyl Esters》. The information in the text is summarized as follows:

A method for the O-difluoromethylation of carboxylic acids using com. available TMSCF2Br is disclosed. The devised bench-top reaction system is air-stable and offers mild reaction conditions while using readily available reagents and solvents. The method is applicable to both aliphatic and aromatic carboxylic acids while demonstrating compatibility with a range of commonly encountered functional groups. The difluoromethyl esters of FDA approved drugs and pharmaceutically relevant mols. are also presented, demonstrating the potential for late-stage functionalization. The results came from multiple reactions, including the reaction of 2-Iodobenzoic acid(cas: 88-67-5Application of 88-67-5)

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

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

The author of 《Oxidative organocatalysed enantioselective coupling of indoles with aldehydes that forms quaternary carbon stereocentres》 were Rezayee, Nomaan M.; Lauridsen, Vibeke H.; Naesborg, Line; Nguyen, Thanh V. Q.; Tobiesen, Henriette N.; Joergensen, Karl Anker. And the article was published in Chemical Science in 2019. Recommanded Product: Trimethylsulfoxonium iodide The author mentioned the following in the article:

The first organocatalyzed, metal-free cross-nucleophile coupling of indoles with α-branched aldehydes forming acyclic stereoselective quaternary carbon centers was presented. Applying an amino acid-derived catalyst with suitable organic oxidants afforded the desired enantioenriched indole functionalized products with moderate to excellent yield and enantioselectivity. Two metal-free oxidative protocols employing either DDQ or a sequential approach that uses two organocatalysts to facilitate the use of O2 as the terminal oxidant were disclosed. These methods were compatible with various indoles ranging from electron-rich to -deficient substituents at the C-2,-5,-6 and -7-positions reacting with a series of different α-branched aldehydes. In addition to this study using Trimethylsulfoxonium iodide, there are many other studies that have used Trimethylsulfoxonium iodide(cas: 1774-47-6Recommanded Product: Trimethylsulfoxonium iodide) was used in this study.

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.Recommanded Product: Trimethylsulfoxonium iodide

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

The author of 《Efficient deep blue OLEDs with extremely low efficiency roll-off at high brightness based on phenanthroimidazole derivatives》 were Chen, Xiang; Zhao, Jue-Wen; Zheng, Xu-Hui; Zhu, Jie-Ji; Yang, Guo-Xi; Tang, Shan-Shun; Tong, Qing-Xiao; Tao, Si-Lu. And the article was published in Chinese Chemical Letters in 2019. Name: 1-Bromo-3-iodobenzene The author mentioned the following in the article:

Phosphorescent and thermally activated delayed fluorescence (TADF) emitters can break through the spin statistics rules and achieve great success in external quantum efficiency (>5%). Maintaining high efficiency at high brightness is a tremendous challenge for applications of organic light emitting diodes. Two phenanthroimidazole derivatives PPI-An-CN and PPI-An-TP are reported, and extremely low efficiency roll-off with ∼99% of the maximum external quantum efficiency (EQEmax) maintained even at a high luminance of 1000 cd/cm2 based nondoped devices were achieved. When doping the 2 materials in CBP (4,4′-bis(N-carbazolyl)-1,1′-biphenyl), the doped devices still exhibited excellent stability at high brightness with CIEy ≈ 0.07 and low turn-on voltage of only 2.8 V. The state-of-the-art low efficiency roll-off makes the new materials attractive for potential applications. It is the 1st time that the Fragment Contribution Anal. method was used to analyze the excited state properties of the mols. in the field of OLEDs, which helps one understand the mechanism more intuitively and deeply.1-Bromo-3-iodobenzene(cas: 591-18-4Name: 1-Bromo-3-iodobenzene) was used in this study.

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.Name: 1-Bromo-3-iodobenzene

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

《A multiphase nickel iron sulfide hybrid electrode for highly active oxygen evolution》 was published in Science China Materials in 2020. These research results belong to Li, Pengsong; Zhao, Xiuping; Duan, Xinxuan; Li, Yaping; Kuang, Yun; Sun, Xiaoming. Product Details of 516-12-1 The article mentions the following:

Development of highly active electrocatalysts for oxygen evolution reaction (OER) is one of the critical issues for water splitting, and most reported catalysts operate at overpotentials above 190 mV. Here we present a multiphase nickel iron sulfide (MPS) hybrid electrode with a hierarchical structure of iron doped NiS and Ni3S2, possessing a benchmark OER activity in alk. media with a potential as low as 1.33 V (vs. reversible hydrogen electrode) to drive an OER c.d. of 10 mA cm-2. The Fe doped NiS, combined with highly conductive disulfide phase on porous Ni foam, is believed to be responsible for the ultrahigh activity. Further more, d. functional theory simulation reveals that partially oxidized sulfur sites in Fe doped NiS could dramatically lower the energy barrier for the rate determining elementary reaction, thus contributing to the active oxygen evolution.1-Iodopyrrolidine-2,5-dione(cas: 516-12-1Product Details of 516-12-1) 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. Product Details of 516-12-1

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