Author: Jessica.F

In 2015,Xue, Xiaochao; Li, Wei; Yin, Zhaojun; Meng, Xiangbao; Li, Zhongjun published 《Concise and direct construction of cis-pyrano[4,3-b]pyran-5-one skeleton from glucal derivatives: synthesis of ent-4-deoxy-2,3-di-epi-dinemasone BC》.Tetrahedron Letters published the findings.COA of Formula: C2H4I2 The information in the text is summarized as follows:

(-)-Dinemasones B and C were isolated from a culture of the endophytic fungus Dinemasporium strigosum and had shown attractive antimicrobial activities in vitro. Described herein is the concise synthesis of their analog, ent-4-deoxy-2,3-di-epi-dinemasone BC, from glucal derivatives, including C-glycoside and 3-deoxy-glucal, and the strategies proceeded in 7 steps in 13% overall yield and in 9 steps in 17% overall yield resp. In the part of experimental materials, we found many familiar compounds, such as 1,2-Diiodoethane(cas: 624-73-7COA of Formula: 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.COA of Formula: C2H4I2

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

In 2019,Tetrahedron included an article by Rodrigues, Juliana M.; Buisson, Pierre; Pereira, Joana M.; Pinheiro, Ines M.; Fernandez-Marcelo, Tamara; Vasconcelos, M. Helena; Berteina-Raboin, Sabine; Queiroz, Maria-Joao R. P.. Category: iodides-buliding-blocks. The article was titled 《Synthesis of novel 8-(het)aryl-6H-pyrano[4′,3′:4,5]thieno[3,2-b]pyridines by 6-endo-dig cyclization of Sonogashira products and halolactonizations with Cu salts/NXS. Preliminary antitumor evaluation》. The information in the text is summarized as follows:

Novel 8-(het)aryl-6H-pyrano[4′,3′:4,5]thieno[3,2-b]pyridines were prepared in good to high yields by a tandem one-pot procedure of Sonogashira coupling and 6-endo-dig lactonization from 3-bromothieno[3,2-b]pyridine-2-carboxylic acid and (het)arylalkynes. Sonogashira coupling products were also prepared from the corresponding Me ester giving in the same reaction the corresponding 6-endo-dig compounds as minor products. The Sonogashira Ph ester product gave cyclization with electrophiles only in low to moderate yields. Nevertheless, halolactonizations using Cu(I) or (II) salts/N-halosuccinimides (NXS) from either the Ph ester or the carboxylic acid derivatives occurred in good to high yields. The growth inhibition potential of the compounds was evaluated using human tumor cell lines, HCT-15 (colorectal adenocarcinoma) and NCI-H460 (non-small cell lung cancer) and studies of apoptosis induction were performed for the three most promising compounds in HCT-15 cells. Two of them caused almost 40% of cell death by apoptosis when tested at their 1.5 x GI50 concentrations The tricyclic lactone with a F atom in the meta position showed to be the most promising one. The experimental part of the paper was very detailed, including the reaction process of 1-Iodopyrrolidine-2,5-dione(cas: 516-12-1Category: iodides-buliding-blocks)

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. Category: iodides-buliding-blocks

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

In 2019,Virchows Archiv included an article by Keelawat, Somboon; Bychkov, Andrey. Reference of 1-Iodopyrrolidine-2,5-dione. The article was titled 《Compact buds with biphasic differentiation and calcitonin-expressing neuroendocrine cells-previously unrecognized structures of thyroglossal duct unveiled by immunohistochemistry》. The information in the text is summarized as follows:

Immunophenotype of thyroglossal duct (TGD) cysts, including lining epithelium and thyroid remnants, is scarcely addressed in the literature. There is indirect evidence that C cells may be derived from progenitor cells of the midline thyroid primordium. This is supported by the recent concept of the endodermal origin of lateral thyroid anlagen and several case reports. We aimed to search for neuroendocrine cells in TGD cysts and to characterize immunophenotype of the thyroid follicles and epithelial lining of TGD. Out of 98 TGD cysts, 70% contained both cyst-lining epithelium and thyroid follicles, whereas 30% possessed only cyst-lining epithelium. Specimens eligible for immunohistochem. (n = 61) were stained for thyroid-specific and neuroendocrine markers. Thyroid remnants were pos. for thyroid transcription factor 1 (TTF-1) and other thyroid tissue-specific markers and neg. for calcitonin. TGD epithelium showed strong p63 positivity. We found that respiratory epithelium in 9.8% of TGDs contained neuroendocrine cells pos. for calcitonin, chromogranin A, and synaptophysin but neg. for carcinoembryonic antigen. In 44.2% of the cases, we detected compact buds, microscopic structures appearing as nests of epithelial cells with a biphasic population of basal (p63+) and central (TTF-1+) cells. Thyroid remnants in TGD expressed full spectrum of thyroid-specific markers and contained no C cells. Instead, calcitonin-expressing neuroendocrine cells were found among the respiratory epithelium of TGD. These cells can be a potential source of neuroendocrine tumors mimicking medullary carcinoma in median anlage derivatives We also discovered precursor compact buds with dual immunophenotype and proposed a concept of their morphogenesis. In the experimental materials used by the author, we found 1-Iodopyrrolidine-2,5-dione(cas: 516-12-1Reference 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. Reference of 1-Iodopyrrolidine-2,5-dione

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

In 2019,Organic Letters included an article by Mishra, Uttam K.; Patel, Kaushalendra; Ramasastry, S. S. V.. Name: Trimethylsulfoxonium iodide. The article was titled 《Synthesis of Cyclopropanoids via Substrate-Based Cyclization Pathways》. The information in the text is summarized as follows:

A series of unexpected reactions triggered by the dimethyloxosulfonium methylide led to the discovery of unconventional approaches for the synthesis of cyclopropa-fused tetralones and indeno-spirocyclopropanes. These highly functionalized structures were further elaborated in one step to privileged scaffolds such as tetralones, indenones, and fluorenones. As a whole, the results presented herein establish new diversity-oriented folding pathways. In the part of experimental materials, we found many familiar compounds, such as Trimethylsulfoxonium iodide(cas: 1774-47-6Name: Trimethylsulfoxonium iodide)

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.Name: Trimethylsulfoxonium iodide

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

The author of 《Synthesis, Characterization, and Reactivity of an Ethynyl Benziodoxolone (EBX)-Acetonitrile Complex》 were Yudasaka, Masaharu; Shimbo, Daisuke; Maruyama, Toshifumi; Tada, Norihiro; Itoh, Akichika. And the article was published in Organic Letters in 2019. Application of 88-67-5 The author mentioned the following in the article:

The synthesis of a crystalline ethynyl-1,2-benziodoxol-3(1H)-one (EBX)-acetonitrile complex is described. EBX has been widely used as an active species for a variety of reactions; however, its high instability has so far prevented its isolation. The EBX-acetonitrile is self-assembled into a double-layered honeycomb structure through weak hypervalent iodine secondary interactions and hydrogen bonding. The N-ethynylation of a variety of sulfonamides using the EBX-acetonitrile complex as a substrate under mild conditions is also described.2-Iodobenzoic acid(cas: 88-67-5Application of 88-67-5) was used in this study.

2-Iodobenzoic acid(cas: 88-67-5) 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. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine.Application of 88-67-5

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

The author of 《Gold-Catalyzed 1,2-Oxyalkynylation of N-Allenamides with Ethylnylbenziodoxolones》 were Banerjee, Somsuvra; Senthilkumar, Beeran; Patil, Nitin T.. And the article was published in Organic Letters in 2019. Recommanded Product: 88-67-5 The author mentioned the following in the article:

A gold-catalyzed 1,2-oxyalkynylation of N-allenamides with ethylnylbenziodoxolones (EBXs) has been achieved for the first time. The reaction, which follows a redox-neutral Au(I)/Au(III) catalytic pathway, was enabled in an attempt to exhaust the EBX reagents atom-economically by putting the nucleophilic carboxylate part of EBXs to appropriate use. This constitutes the first example for gold-catalyzed β-alkynylation of N-allenamides to construct highly valuable 1,3-enynes. The potential of the sequence is further documented by some follow-up transformations. In addition to this study using 2-Iodobenzoic acid, there are many other studies that have used 2-Iodobenzoic acid(cas: 88-67-5Recommanded Product: 88-67-5) was used in this study.

2-Iodobenzoic acid(cas: 88-67-5) 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. Recommanded Product: 88-67-5 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

The author of 《Rh(II)-Catalyzed Nitrene-Transfer [5 + 1] Cycloadditions of Aryl-Substituted Vinylcyclopropanes》 were Combee, Logan A.; Johnson, Shea L.; Laudenschlager, Julie E.; Hilinski, Michael K.. And the article was published in Organic Letters in 2019. Quality Control of Trimethylsulfoxonium iodide The author mentioned the following in the article:

Formal [5 + 1] cycloadditions between aryl-substituted vinylcyclopropanes and nitrenoid precursors are reported. The method, which employs Rh2(esp)2 as a catalyst, leads to the highly regioselective formation of substituted tetrahydropyridines. Preliminary mechanistic studies support a stepwise, polar mechanism enabled by the previously observed Lewis acidity of Rh-nitrenoids. Overall, this work expands the application of nitrene-transfer cycloaddition, a relatively underexplored approach to heterocycle synthesis, to the formation of six-membered rings. In addition to this study using Trimethylsulfoxonium iodide, there are many other studies that have used Trimethylsulfoxonium iodide(cas: 1774-47-6Quality Control of 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.Quality Control of Trimethylsulfoxonium iodide

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

《Redox-neutral photochemical Heck-type arylation of vinylphenols activated by visible light》 was published in Chemical Science in 2020. These research results belong to Liang, Kangjiang; Li, Tao; Li, Na; Zhang, Yang; Shen, Lei; Ma, Zhixian; Xia, Chengfeng. Category: iodides-buliding-blocks The article mentions the following:

Disclosed herein is a photochem. Heck-type arylation of vinylphenols with non-activated aryl and heteroaryl halides under visible light irradiation Preliminary mechanistic studies suggested that the colored vinylphenolate anions acted as a strong reducing photoactivator to directly activate (hetero)aryl halides without the need for any sacrificial reductants. The photochem. generated aryl radicals coupled with another mol. of vinylphenol to afford the Heck-type arylation product in a regiospecific and stereoselective manner. The developed photochem. arylation protocol showed exceptional functional group tolerance and was successfully applied in the challenging late-stage modification of natural products without any protection-deprotection procedures. In the experiment, the researchers used many compounds, for example, 3-Iodophenol(cas: 626-02-8Category: iodides-buliding-blocks)

3-Iodophenol(cas: 626-02-8) belongs to organic iodides. Generally organic iodides can be divided into two classes of alkyl iodides and aryl iodides. Category: iodides-buliding-blocks Typical reactions of alkyl iodides include nucleophilic substitution, elimination, reduction, and the formation of organometallics.

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

《Pd1/CeO2 single-atom catalyst for alkoxycarbonylation of aryl iodides》 was published in Science China Materials in 2020. These research results belong to Chen, Fang; Li, Tianbo; Pan, Xiaoli; Guo, Yalin; Han, Bing; Liu, Fei; Qiao, Botao; Wang, Aiqin; Zhang, Tao. Quality Control of 1-Iodonaphthalene The article mentions the following:

Herein, Pd1/CeO2 single-atom catalyst showed good performance in the alkoxycarbonylation of aryl iodides was firstly reported. Under base-free and ligand-free conditions, Pd1/CeO2 single-atom catalyst could transfer different aryl iodides to corresponding products. The catalyst could be easily recovered and reused four times without significant loss of reactivity.1-Iodonaphthalene(cas: 90-14-2Quality Control of 1-Iodonaphthalene) was used in this study.

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.Quality Control of 1-Iodonaphthalene

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

《Glycinamide hydrochloride as a transient directing group: Synthesis of 2-benzylbenzaldehydes by C(sp3)-H arylation》 was written by Wen, Fei; Li, Zheng. Recommanded Product: 1-Bromo-3-iodobenzene And the article was included in Synthetic Communications in 2020. The article conveys some information:

Glycinamide hydrochloride as an inexpensive and com. available transient directing group for the C(sp3)-H arylation of 2-methylbenzaldehydes was described. A series of practical 2-benzylbenzaldehydes bearing various functional groups were efficiently synthesized in satisfactory yield by this strategy. This method was also be extended to gram scale. In the part of experimental materials, we found many familiar compounds, such as 1-Bromo-3-iodobenzene(cas: 591-18-4Recommanded Product: 1-Bromo-3-iodobenzene)

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.Recommanded Product: 1-Bromo-3-iodobenzene

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