Month: October 2022

Formula: C6H4ClIIn 2019 ,《Three-Component Aminoselenation of Arynes》 was published in Organic Letters. The article was written by Gaykar, Rahul N.; Guin, Avishek; Bhattacharjee, Subrata; Biju, Akkattu T.. The article contains the following contents:

The three-component coupling of tertiary amines, arynes, and aryl selenium bromide or diaryl diselenide as an electrophilic selenium source allowing the synthesis of 2-selanyl aniline derivatives is reported. This aminoselenation reaction of arynes installs a C-N and C-Se bond under mild conditions, and the products are formed in moderate to good yields. This reaction is compatible with various functional groups, and the preliminary studies on the mechanism of the reaction is also provided. In the experiment, the researchers used 1-Chloro-3-iodobenzene(cas: 625-99-0Formula: C6H4ClI)

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. Formula: C6H4ClI 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

Name: 1-Bromo-4-iodobenzeneIn 2020 ,《Nonvolatile bistable memory device based on polyfluorene with Ag NPs doping materials》 was published in Organic Electronics. The article was written by Huang, Jiahe; Zhang, Hongyan; Zhao, Xiaofeng; Bai, Ju; Hou, Yanjun; Wang, Shuhong; Wang, Cheng; Ma, Dongge. The article contains the following contents:

Organic elec. memory devices have broad application prospects. In the present paper, a new kind of polyfluorene-based material containing methoxytriphenylamine groups was synthesized, which exhibited good Flash-type storage characteristics. The material was further doped with Ag NPs to improve storage performance. With appropriate amount of Ag NPs, the device presented an ON/OFF current ratio up to 1.1 × 104 with excellent stability. In addition, the switching characteristics of the device were discussed through data fitting and MO calculation In the experiment, the researchers used many compounds, for example, 1-Bromo-4-iodobenzene(cas: 589-87-7Name: 1-Bromo-4-iodobenzene)

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..Name: 1-Bromo-4-iodobenzene 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

Recommanded Product: 619-58-9In 2022 ,《Supramolecular interaction controlled and calix[4]arene ligand assisted Pd-catalyzed C(sp3)-H arylation of aliphatic aldehydes》 was published in Chinese Chemical Letters. The article was written by Wu, Yao; Ma, Zhiyan; Shi, Jing; Sun, Xiaoqiang; Yang, Ke; Li, Zheng-Yi. The article contains the following contents:

A calix[4]arene ligand assisted direct β-C-H arylation of tertiary aliphatic aldehydes has been developed via a Pd-catalyzed C(sp3)-H functionalization process. This strategy exhibited good functional group compatibility and C-H bond site-selectivity. Mechanism studies have shown that both synergistic effect and cationic-π supramol. interaction between calixarene cavity and transition-metal catalytic center may play an important role in this catalytic cycle. This complementary method would be used in organic and medical chem. due to the importance of tertiary aliphatic aldehydes. In the experiment, the researchers used many compounds, for example, 4-Iodobenzoic acid(cas: 619-58-9Recommanded Product: 619-58-9)

4-Iodobenzoic acid(cas: 619-58-9) belongs to organic iodides.Recommanded Product: 619-58-9 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

《I2/NaH/DMF as oxidant trio for the synthesis of tryptanthrin from indigo or isatin》 was written by Brandao, Pedro; Pinheiro, Daniela; Sergio Seixas de Melo, J.; Pineiro, Marta. Related Products of 624-73-7This research focused ontryptanthrin indigo isatin trio oxidant. The article conveys some information:

Tryptanthrin, a product present in several natural sources used as colorants and very relevant in the field of Medicinal Chem., was synthesized from indigo and isatin under mild conditions using microwave irradiation A plausible mechanism for the synthesis of tryptanthrin using the oxidant system formed by iodine, sodium hydride and DMF, the latter acting with dual activity as solvent and as the oxygen source, is proposed. The experimental part of the paper was very detailed, including the reaction process of 1,2-Diiodoethane(cas: 624-73-7Related Products of 624-73-7)

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.Related Products of 624-73-7

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

Name: 1-Chloro-4-iodo-2-nitrobenzeneOn May 3, 2019 ,《Pd-Catalyzed Decarboxylative Ortho-Halogenation of Aryl Carboxylic Acids with Sodium Halide NaX Using Carboxyl as a Traceless Directing Group》 appeared in Organic Letters. The author of the article were Fu, Zhengjiang; Jiang, Yongqing; Wang, Shuiliang; Song, Yuanyuan; Guo, Shengmei; Cai, Hu. The article conveys some information:

A highly regioselective Pd-catalyzed carboxyl directed decarboxylative ortho-C-H halogenation of cheap o-nitrobenzoic acids with NaX (X = I, Br) under aerobic conditions has been established. The utility of the method has been demonstrated by the gram-scale reaction and derivatization of the product. Exptl. results have confirmed Pd and Bi played critical roles in the transformation and indicated the transformation might proceed via 2-halo-6-nitrobenzoic acid derivative intermediate. In the experimental materials used by the author, we found 1-Chloro-4-iodo-2-nitrobenzene(cas: 41252-95-3Name: 1-Chloro-4-iodo-2-nitrobenzene)

1-Chloro-4-iodo-2-nitrobenzene(cas: 41252-95-3) 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.Name: 1-Chloro-4-iodo-2-nitrobenzeneHalogenation of aromatic hydrocarbons is a very important reaction via an electrophilic aromatic substitution.

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

The author of 《Dramatic enantioselectivity reversal in the propargylation of aldehyde with alkynyllithium catalyzed by dilithium binaphtholate derivatives》 were Nakajima, Makoto; Watanabe, Rika; Osakama, Kazuki; Sakamoto, Midori; Takemoto, Daijiro; Kukita, Kenji. And the article was published in Heterocycles in 2018. Quality Control of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene The author mentioned the following in the article:

A slight structural modification of a chiral catalyst (R)-I (R = C6H5, 2-CH3OC6H4, 2,3-dihydro-1-benzofuran-7-yl, etc.) caused a dramatic enantioselectivity reversal in the propargylation of aldehydes R1CHO (R1 = C6H5, (CH2)2C6H5, 2-naphthyl, etc.) with alkynyllithium. The experimental process involved the reaction of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3Quality Control of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene)

(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. Quality Control of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene 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

Wu, T. Robert; Shen, Lixin; Chong, J. Michael published their research in Organic Letters on August 5 ,2004. The article was titled 《Asymmetric Allylboration of Aldehydes and Ketones Using 3,3′-Disubstituted Binaphthol-Modified Boronates》.Application In Synthesis of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene The article contains the following contents:

Allylboronates derived from 3,3′-disubstituted 2,2′-binaphthols react with aldehydes and ketones to give the expected allylated products with up to >99:1 er. Highest selectivities were observed for aromatic ketones. The bis(trifluoromethyl) derivative is particularly outstanding in terms of reactivity, selectivity, and robustness. The results came from multiple reactions, including the reaction of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3Application In Synthesis of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene)

(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. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine.Application In Synthesis of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene

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

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