Tag: 200-300

Photochromic dihetarylethenes. 10. Photochromic 1,2-bis[2-(benzothiazol-2-yl)-3-thienyl]- and 1,2-bis[2-(benzothiazol-2-yl)benzothiophen-3-yl]ethenes was written by Krayushkin, M. M.;Stoyanovich, F. M.;Zolotarskaya, O. Yu.;Murav’ev, I. V.;Martynkin, A. Yu.;Uzhinov, B. M.. And the article was included in Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya) in 2001.SDS of cas: 6287-82-7 This article mentions the following:

1,2-Di(thien-3-yl)ethenes containing thiophene rings with benzothiazolyl substituents in position 2 were synthesized. 1,2-Bis[2-(benzothiazol-2-yl)benzothiophen-3-yl]hexafluorocyclopentene and 1,2-bis[2,5-di(benzothiazol-2-yl)-3-thienyl]hexafluorocyclopentene possess photochromic properties. The open forms of 1,2-bis(2-benzothiazolylhetaryl)ethenes fluoresce, but introduction of the benzothiazole rings into dihetarylethenes significantly lowers the fatigue resistance of photochromes and favors thermal reversibility. In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7SDS of cas: 6287-82-7).

2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.SDS of cas: 6287-82-7

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

C-H arylation and alkenylation of imidazoles by nickel catalysis: solvent-accelerated imidazole C-H activation was written by Muto, Kei;Hatakeyama, Taito;Yamaguchi, Junichiro;Itami, Kenichiro. And the article was included in Chemical Science in 2015.Related Products of 6287-82-7 This article mentions the following:

The first nickel-catalyzed C-H arylations and alkenylations of imidazoles with phenol and enol derivatives are described. Under the influence of Ni(OTf)₂/dcype/K₃PO₄ (dcype: 1,2-bis(dicyclohexylphosphino)ethane) in t-amyl alc., imidazoles can undergo C-H arylation with phenol derivatives The C-H arylation of imidazoles with chloroarenes as well as that of thiazoles and oxazoles with phenol derivatives can also be achieved with this catalytic system. By changing the ligand to dcypt (3,4-bis(dicyclohexylphosphino)thiophene), enol derivatives could also be employed as coupling partners achieving the C-H alkenylation of imidazoles as well as thiazoles and oxazoles. Thus, a range of C2-arylated and alkenylated azoles can be synthesized using this newly developed nickel-based catalytic system. The key to the success of the C-H coupling of imidazoles is the use of a tertiary alc. as solvent. This also allows the use of an air-stable nickel(II) salt as the catalyst precursor. In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7Related Products of 6287-82-7).

2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Functionalized benzothiophenes are important constructs found in molecules with wide ranging biological activity and in organic materials. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, sertaconazole, and also BTCP.Related Products of 6287-82-7

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

A convenient synthesis of 3,4-diaryl(hetaryl)-substituted maleimides and maleic anhydrides was written by Shorunov, S. V.;Krayushkin, M. M.;Stoyanovich, F. M.;Irie, M.. And the article was included in Russian Journal of Organic Chemistry in 2006.Synthetic Route of C9H7BrS This article mentions the following:

A convenient procedure has been developed for the synthesis of 3,4-diaryl(or hetaryl)maleimides by cross coupling of N-substituted 3,4-dibromomaleimides with aryl(hetaryl)boronic acids in the presence of Pd(Ph₃P)₄ and CsF. The reaction ensures high yields of the products and requires relatively small amount of the catalyst; it can be performed on an enlarged scale. The resulting maleimides are readily converted into the corresponding maleic anhydrides. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Synthetic Route of C9H7BrS).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophene finds use in research as a starting material for the synthesis of larger, usually bioactive structures. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Synthetic Route of C9H7BrS

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Reactions of bromothianaphthenes with piperidine. Reinvestigation was written by Reinecke, Manfred G.;Mohr, William B.;Adickes, H. Wayne;De Bie, D. A.;Van der Plas, H. C.;Nijdam, K.. And the article was included in Journal of Organic Chemistry in 1973.Safety of 2,3-Dibromobenzo[b]thiophene This article mentions the following:

The reaction of 3-bromothianaphthene with piperidine was reinvestigated and found to give primarily the normal (I) but also some of the cine-substitution product (II), which is also the only product from the reaction of 2-bromothianapthene. The previously reported results can be rationalized by the effects of air metals, and impure starting material on the reaction. 2,3-Dibromothianaphthene (III) also gives II under these conditions probably via the 2-piperidino-3-bromo analog (IV), which was isolated under milder conditions, could be converted to II in high yield, and was synthesized from II via an iminium salt. 2,3-Dipiperidinothianaphthene was isolated in trace amounts from the reactions of III and IV with piperidine. Possible mechanisms for some of these reactions are discussed. In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7Safety of 2,3-Dibromobenzo[b]thiophene).

2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Benzothiophene finds use in research as a starting material for the synthesis of larger, usually bioactive structures. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Safety of 2,3-Dibromobenzo[b]thiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Polymerization of a Photochromic Diarylethene by Friedel-Crafts Alkylation was written by Jeong, Yong-Chul;Park, Dae Gyu;Kim, Eunkyoung;Yang, Sung Ik;Ahn, Kwang-Hyun. And the article was included in Macromolecules in 2006.Safety of 3-Bromo-2-methylbenzo[b]thiophene This article mentions the following:

A high-d. diarylethene main-chain homopolymer, poly-BTF6, from the reaction of BTF6 with TiCl₄ and chloromethyl Me ether was synthesized and characterized. The new polymerization method is efficient to produce the polymers of various mol. weights in high yield. The polymer exhibits the characteristic photochromic property as the corresponding monomeric unit in solution and also in solid film. The fatigue resistance of the polymer to UV light was significantly improved compared with its monomer unit. This novel polymerization of a photochromic diarylethene using Friedel-Crafts alkylation could be widely applied in the polymerization of many functional aromatic compound as evidently shown by the dimerization of a benzothiopene derivative In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Safety of 3-Bromo-2-methylbenzo[b]thiophene).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Safety of 3-Bromo-2-methylbenzo[b]thiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Hydrotreating of halobenzo[b]thiophenes and their S-oxide and S,S-dioxide derivatives over cobalt(II) oxide-molybdenum(VI) oxide/alumina catalyst was written by Bonnet, M.;Geneste, P.;Guida, A.;Mampouya, D.. And the article was included in Journal of Catalysis in 1983.Name: 2,3-Dibromobenzo[b]thiophene This article mentions the following:

The title reaction was examined under stirred batch reactor conditions. The dehalogenation of the halobenzo[b]thiophenes (I) occurs without any hydrogenation or hydrodesulfurization. For the S-oxides deoxygenation occurs first; for the S,S-dioxides dehalogenation is the first step of the reaction. The LFER of the dehalogenation rate vs. the ionization potential of I shows that electronic effects are important in these reactions. In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7Name: 2,3-Dibromobenzo[b]thiophene).

2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.Name: 2,3-Dibromobenzo[b]thiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Palladium(0)-catalyzed Domino C-N Coupling/Hydroamination/C-H Arylation: Efficient Synthesis of Benzothieno[2′,3′:4,5]pyrrolo[1,2-f]phenanthridines was written by Salman, Ghazwan Ali;Pham, Ngo Nghia;Ngo, Thang Ngoc;Ehlers, Peter;Villinger, Alexander;Langer, Peter. And the article was included in Advanced Synthesis & Catalysis in 2017.Product Details of 6287-82-7 This article mentions the following:

Two new and efficient routes to benzothieno[2′,3′:4,5]pyrrolo[1,2-f]phenanthridines were developed. Alkynylated benzothiophenes reacted with various anilines to the target compounds in a domino reaction consisting of a C-N coupling-, hydroamination- followed by a final, ring-closing C-H arylation step. Products were isolated in moderate to good yields. In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7Product Details of 6287-82-7).

2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The core structure is a part of various pharmaceutical substances and natural products. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Product Details of 6287-82-7

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

High-performance field-effect transistor based on dibenzo[d,d’]thieno[3,2-b;4,5-b’]dithiophene, an easily synthesized semiconductor with high ionization potential was written by Gao, Jianhua;Li, Rongjin;Li, Liqiang;Meng, Qing;Jiang, Hui;Li, Hongxiang;Hu, Wenping. And the article was included in Advanced Materials (Weinheim, Germany) in 2007.HPLC of Formula: 6287-82-7 This article mentions the following:

Three simple, controlled steps are all it takes to synthesize the title pentacene analog DBTDT. The material’s high ionization potential, high thermal and photostability, high mobilities, and an on/off ratio larger than 10⁶ at a substrate temperature of ∼36°, as reported here, suggest that DBTDT will be extremely valuable for applications in plastic organic electronics. In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7HPLC of Formula: 6287-82-7).

2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The electrophilic substitution of benzothiophene systems is much less regioselective than that of indoles. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.HPLC of Formula: 6287-82-7

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Copper-mediated construction of benzothieno[3,2-b]benzofurans by intramolecular dehydrogenative C-O coupling reaction was written by Ai, Liankun;Ajibola, Ibrahim Yusuf;Li, Baolin. And the article was included in RSC Advances in 2021.Product Details of 6287-82-7 This article mentions the following:

An efficient method to synthesize benzothieno[3,2-b]benzofurans such as I [R = H, 3-Cl, 3-t-Bu; R¹ = H, 7,8-di-F, 8-Me, etc.] via intramol. dehydrogenative C-H/O-H coupling had been developed. Good to excellent yields (64-91%) could be obtained no matter if the substituted group was electron-donating or electron-withdrawing. Notably, three-to-six fused ring thienofuran compounds I could be constructed using this method. A reaction mechanism study showed that 1,1-diphenylethylene could be completely inhibited the reaction. Therefore, it was a radical pathway initiated by single electron transfer between the hydroxyl of the substrate and the copper catalyst. In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7Product Details of 6287-82-7).

2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Functionalized benzothiophenes are important constructs found in molecules with wide ranging biological activity and in organic materials. It is found within the chemical structures of pharmaceutical drugs such as raloxifene, zileuton, and sertaconazole, and also BTCP.Product Details of 6287-82-7

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Formation of pentaatomic lactones on the 2,3-positions of benzo[b]furan, benzo[b]thiophene, and benzo[b]selenophene was written by Christiaens, L.;Renson, M.. And the article was included in Bulletin des Societes Chimiques Belges in 1972.Quality Control of 3-Bromo-2-methylbenzo[b]thiophene This article mentions the following:

Attempted lactonization of the isomeric hydroxymethyl carboxylic acids I and II (X = O, S, Se) with Ac2O gave only III (X = Se) and IV (X = S, Se). I (X = O, S) and III (X = O) would not cyclize but were acetylated to various degrees. III (X = S) was obtained by cyclizing 2-cyano-3-(hydroxymethyl)benzothiophene. I were prepared by brominating the 3-methyl analogs, subjecting the bromomethyl compounds to Sommelet reaction and NaBH4 reduction II (X = O) was also prepared from the 2-methyl analog, and II (X = S, Se) from their 2-formyl analogs. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Quality Control of 3-Bromo-2-methylbenzo[b]thiophene).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophene is used as starting material for the synthesis of bioactive molecules. The core structure is a part of various pharmaceutical substances and natural products. Its aromaticity makes it relatively stable, although as a heterocycle, it has reactive sites which allow for functionalization.Quality Control of 3-Bromo-2-methylbenzo[b]thiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem