Category: iodides-buliding-blocks

In 2015,Mahamulkar, Shraddha G.; Cisarova, Ivana; Jahn, Ullrich published 《The Lithiation Reactivity and Selectivity of Differentially Branched Alkyldiphenylphosphine Oxides – A Simple and Versatile Approach to ortho-Functionalized Arylphosphine Oxides》.Advanced Synthesis & Catalysis published the findings.Synthetic Route of C2H4I2 The information in the text is summarized as follows:

Alkyldiphenylphosphine oxides typically undergo α-deprotonation with alkyllithium reagents. Here, the lithiation of differentially branched alkyldiphenylphosphine oxides was investigated and a diverse, but predictable reactivity was found. γ-Branched derivatives undergo selective directed ortho-metalation (DoM) using butyllithium and TMEDA as an additive. With decreasing degree of γ-branching α-lithiation becomes predominant. The ortho-phosphinoyllithium intermediates are subject to functionalization and C-C bond forming reactions, thus providing a convenient approach to new phosphine oxides and phosphine-borane complexes, which have a good potential for an approach to new ligands for catalysis. The results came from multiple reactions, including the reaction of 1,2-Diiodoethane(cas: 624-73-7Synthetic Route of C2H4I2)

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.Synthetic Route of C2H4I2

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

The author of 《Rhodium-Catalyzed Reaction of Silacyclobutanes with Unactivated Alkynes to Afford Silacyclohexenes》 were Chen, Hua; Chen, Yi; Tang, Xiaoxiao; Liu, Shunfa; Wang, Runping; Hu, Tianbao; Gao, Lu; Song, Zhenlei. And the article was published in Angewandte Chemie, International Edition in 2019. Synthetic Route of C24H20I2O4 The author mentioned the following in the article:

A Rh-catalyzed reaction of silacyclobutanes (SCBs) with unactivated alkynes has been developed to form silacyclohexenes with high chemoselectivity. Good enantioselectivity at the stereogenic silicon center was achieved using a chiral phosphoramidite ligand. The resulting silacyclohexenes are useful scaffolds for synthesizing structurally attractive silacyclic compounds The experimental part of the paper was very detailed, including the reaction process of (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. 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.Synthetic Route of C24H20I2O4

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

《The Influence of Different Spacer Lengths on the Selectivity of Self-Assembly Processes of Bis(bipyridine)-BINOL Helicates》 was written by Bunzen, Jens; Hapke, Marko; Luetzen, Arne. SDS of cas: 189518-78-3 And the article was included in European Journal of Organic Chemistry on August 31 ,2009. The article conveys some information:

The synthesis and self-assembly behavior of enantiomerically pure bis(chelating) ligands is reported. The ligands differ in the spacer unit between a BINOL core and two bipyridyl groups as the chelating entities and undergo completely diastereoselective self-assembly to dinuclear double-stranded helicates with silver(I) salts, as demonstrated by NMR and CD spectroscopy and ESI mass spectrometry. Upon coordination to iron(II) or zinc(II) ions, however, a dramatic loss in the diastereoselectivity of the self-assembly of dinuclear triple-stranded helicates was observed as a result of increasing spacer length. In the case of zinc(II), the self-assembly processes were even found to be nonselective with regard to the composition of the helicates.(© Wiley-VCH Verlag GmbH and Co. KGaA, 69451 Weinheim, Germany, 2009).(R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3SDS of cas: 189518-78-3) was used in this study.

(R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3) 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. SDS of cas: 189518-78-3 Alkyl iodides react at a faster rate than alkyl fluorides due to the weak C-I bond.

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

《Regio- and Stereoselective Synthesis of Ynenamides through Gold(I)-Catalyzed Hydroalkynylation of Ynamides》 was written by Siera, Hannah; Kreuzahler, Mathis; Wolper, Christoph; Haberhauer, Gebhard. Name: 4-IodobenzaldehydeThis research focused onynenamide preparation regioselective stereoselective DFT; gold catalyst ynamide hydroalkynylation. The article conveys some information:

Herein, regio- and stereoselective preparation of ynenamides I [R = Pr, cyclopropyl, Ph, etc.] via gold(I)-catalyzed hydroalkynylation of ynamides was exptl. shown. A wide range of products could be generated with yields up to 90% and, in contrast to many other gold-catalyzed alkyne dimerization reactions, alkyl groups were tolerated. Quantum chem. calculations and NMR labeling experiments revealed a mechanism via dual gold catalysis. In the part of experimental materials, we found many familiar compounds, such as 4-Iodobenzaldehyde(cas: 15164-44-0Name: 4-Iodobenzaldehyde)

4-Iodobenzaldehyde(cas: 15164-44-0) is used in synthesis of 4-[2-(trimethylsilyl)ethynyl]benzaldehyde, 5,15-dimesityl-10-(3-[2-(trimethylsilyl)ethynyi]phenyl}-20-(4-iodophenyl)porphyrin, and 5,15-dimesityl-10-[3,5-bis{2-[4-(N,N’-difluoroboryl-1,9-dimethyidipyrrin-5-yl)-phenyl]ethynyl}phenyl]-20-(4-iodophenyl)porphyrin.Name: 4-Iodobenzaldehyde

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

Recommanded Product: 1,2-DiiodoethaneIn 2019 ,《Stable Cross-Conjugated Tetrathiophene Diradical》 was published in Angewandte Chemie, International Edition. The article was written by Zhang, Cheng; Medina Rivero, Samara; Liu, Wuyue; Casanova, David; Zhu, Xiaozhang; Casado, Juan. The article contains the following contents:

A tetracyano quinoidal tetrathiophene, having a central bi(thieno[3,4-c]pyrrole-4,6-dione) acceptor, has been studied. The recovered aromaticity of the thiophenes produces a diradical species with cross-conjugation between the inter-dicyano and inter-dione acceptor paths. A diradical character of y0=0.61 and a singlet-triplet gap of -2.76 kcal mol-1 were determined Competition between the two cross-conjugated paths enhances the disjointed character of the SOMOs and results in the confinement of the diradical to the mol. center, enabling a thermodn. diradical stabilization featuring a half-life of 262 h. Cross-conjugation effects have been also addressed in the anionic species (up to a radical trianion). In the experiment, the researchers used many compounds, for example, 1,2-Diiodoethane(cas: 624-73-7Recommanded Product: 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.Recommanded Product: 1,2-Diiodoethane

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

COA of Formula: C3H9IOSIn 2019 ,《Multifunctionalization of Indoles: Synthesis of 3-Iodo-2-sulfonyl Indoles》 was published in Bulletin of the Korean Chemical Society. The article was written by Park, Hyowon; Bae, Junryeol; Son, Soobin; Jang, Hye-Young. The article contains the following contents:

The selective multifunctionalization of indoles by using thiosulfonates, tri-Me sulfoxonium iodide (Me3SOI), and H2O2 was studied. The reaction of thiosulfonates with Me3SOI and H2O2 produced sulfonyl radicals and an iodination reagent, both of which were incorporated in indoles to form 3-iodo-2-sulfonyl indoles under carefully controlled conditions. The related reaction mechanism and the substrate scope of 3-iodo-2-sulfonyl indoles are presented. In addition to this study using Trimethylsulfoxonium iodide, there are many other studies that have used Trimethylsulfoxonium iodide(cas: 1774-47-6COA of Formula: C3H9IOS) 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.COA of Formula: C3H9IOS

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

Application of 624-73-7In 2017 ,《Investigation of the structural requirements of K-Ras(G12D) selective inhibitory peptide KRpep-2d using alanine scans and cysteine bridging》 was published in Bioorganic & Medicinal Chemistry Letters. The article was written by Niida, Ayumu; Sasaki, Shigekazu; Yonemori, Kazuko; Sameshima, Tomoya; Yaguchi, Masahiro; Asami, Taiji; Sakamoto, Kotaro; Kamaura, Masahiro. The article contains the following contents:

A structure-activity relationship study of a K-Ras(G12D) selective inhibitory cyclic peptide, KRpep-2d was performed. Alanine scanning of KRpep-2d focusing on the cyclic moiety showed that Leu7, Ile9, and Asp12 are the key elements for K-Ras(G12D) selective inhibition of KRpep-2d. The cysteine bridging was also examined to identify the stable analog of KRpep-2d under reductive conditions. As a result, the KRpep-2d analog (12) including mono-methylene bridging showed potent K-Ras(G12D) selective inhibition in both the presence and the absence of dithiothreitol. This means that mono-methylene bridging is an effective strategy to obtain a reduction-resistance analog of parent disulfide cyclic peptides. Peptide 12 inhibited proliferation of K-Ras(G12D)-driven cancer cells significantly. These results gave valuable information for further optimization of KRpep-2d to provide novel anti-cancer drug candidates targeting the K-Ras(G12D) mutant. In addition to this study using 1,2-Diiodoethane, there are many other studies that have used 1,2-Diiodoethane(cas: 624-73-7Application of 624-73-7) was used in this study.

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.Application of 624-73-7

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

Product Details of 516-12-1In 2019 ,《Constrained sialic acid donors enable selective synthesis of α-glycosides》 was published in Science (Washington, DC, United States). The article was written by Komura, Naoko; Kato, Keiichi; Udagawa, Taro; Asano, Sachi; Tanaka, Hide-Nori; Imamura, Akihiro; Ishida, Hideharu; Kiso, Makoto; Ando, Hiromune. The article contains the following contents:

Sialic acid is a sugar residue present in many biol. significant glycans of mammals, commonly as a terminal α-glycoside. The chem. structure of sialic acid, which features an anomeric center with carboxyl and methylene substituents, poses a challenge for synthesis of the α-glycoside, thus impeding biol. and therapeutic studies on sialic acid-containing glycans. We present a robust method for the selective α-glycosylation of sialic acid using macro-bicyclized sialic acid donors as synthetic equivalent of structurally constrained oxocarbenium ions to impart stereoselectivity. We demonstrate the power of our method by showcasing broad substrate scope and applicability in the preparation of diverse sialic acid-containing architectures. In addition to this study using 1-Iodopyrrolidine-2,5-dione, there are many other studies that have used 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

Recommanded Product: 1-Iodo-4-methylbenzeneIn 2021 ,《Sensitive and Repeatable Photoinduced Luminescent Radicals from A Simple Organic Crystal》 was published in Angewandte Chemie, International Edition. The article was written by Mu, Yingxiao; Liu, Yanyan; Tian, Haiyan; Ou, Depei; Gong, Li; Zhao, Juan; Zhang, Yi; Huo, Yanping; Yang, Zhiyong; Chi, Zhenguo. The article contains the following contents:

Photoinduced organic radicals are important for chem. and phys. processes of organic materials, which are extensively investigated and applied in organic synthesis, photoelectronic devices and biotechnol. However, there are rare reports of the luminescence for these photoinduced radicals, especially in the condensed state. Herein, an unexpected and interesting luminescent radical is described, which can be rapidly and reversibly generated from a simple organic crystal by gentle light irradiation in air. It was revealed that the twist and asym. conformation of isolated mol. in its crystal with only weak C-H···π intermol. interactions, which led to the generation of such photoinduced luminescent radicals. In addition, dual-channel photosensitive device with rapid response and well repeatability can be obtained based on the thin film of this organic crystal, showing both photoswitching on luminescence and conducting. In the experiment, the researchers used many compounds, for example, 1-Iodo-4-methylbenzene(cas: 624-31-7Recommanded Product: 1-Iodo-4-methylbenzene)

1-Iodo-4-methylbenzene(cas: 624-31-7) is used in wide range of medicals industrial applications as well as in pharmaceutical intermediates, polarizing films for Liquid Crystal Display (LCD) chemicals.Recommanded Product: 1-Iodo-4-methylbenzene

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

Application of 516-12-1In 2021 ,《Recent progresses in photocatalytic hydrogen production: design and construction of Ni-based cocatalysts》 appeared in International Journal of Energy Research. The author of the article were Liu, Xiaobin; Zhuang, Huaqiang. The article conveys some information:

A review. Up to now, much effort has focused on developing the highly efficiency composite photocatalysts by introducing cocatalysts in the photocatalytic hydrogen production reaction, because the proper cocatalysts can reduce activation energy, provide active sites, and suppress the reverse reaction. The transition metal nickel and its compounds acting as cocatalyst have received intensive attention because of their structural stability, facile preparation, and high performance in hydrogen evolution reaction, and are expected to replace the function of noble metals. This review emphasizes on the latest progresses that design and construction of composite photocatalyst using Ni-based cocatalyst for enhanced hydrogen production, such as metal nickel, nickel sulfide, and nickel phosphide, will be presented. Then, some preparation strategies and influence factors of Ni-based cocatalysts on enhanced photocatalytic hydrogen production are elucidated in detail. Finally, some challenge and perspective on the highly active cocatalysts in the area of photocatalytic hydrogen production from water splitting are also given. In the part of experimental materials, we found many familiar compounds, such as 1-Iodopyrrolidine-2,5-dione(cas: 516-12-1Application of 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. Application of 516-12-1

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