Day: January 5, 2023

A convenient preparation of aryl trifluoromethyl ketones was written by DiMenna, William S.. And the article was included in Tetrahedron Letters in 1980.Category: benzothiophene This article mentions the following:

Seven thiophenyl, benzothiophenyl, and benzofuranyl trifluoromethyl ketones were prepared (40-75%) by reaction of CF₃CONMe₂ with aryllithium reagents, obtained by halogen metal exchange or direct metalation. E.g., 2-(trifluoroacetyl)benzo[b]thiophene was obtained (75%) by sequential treatment of benzo[b]thiophene with BuLi (Et₂O, 20°, reflux) and CF₃CONMe₂ (-85 to -65°, 1 h, 0°), followed by hydrolysis (H₂O, 3N HCl). In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7Category: benzothiophene).

2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Benzothiophene is a fused ring compound of thiophene ring and benzene ring, which is an important class of heterocycles with advantageous structures. It has been used as a raw material for the synthesis of biologically active structures and is found in pharmaceuticals such as leukotriene synthesis inhibitors and antifungals, as well as in many natural products.Category: benzothiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Photoinvertible Chiral Liquid Crystal that Affords Helicity-Controlled Aromatic Conjugated Polymers was written by Yoshida, Satoru;Morikawa, Santa;Ueda, Kenta;Hidaka, Masatomo;Kaneko, Kosuke;Kaneko, Kimiyoshi;Hanasaki, Tomonori;Akagi, Kazuo. And the article was included in Advanced Optical Materials in 2020.Category: benzothiophene This article mentions the following:

Photoinvertible chiral compounds are synthesized by linking a photoresponsive bisbenzothienylethene moiety with an axially chiral binaphthyl moiety and used as chiral dopants to prepare a photoinvertible chiral nematic liquid crystal (N*-LC) field. Subsequently, electrochem. polymerizations of ethylenedioxythiophene (EDOT) in the N*-LC field to synthesize helical poly(ethylenedioxythiophene)s (H-PEDOTs) are achieved. The H-PEDOTs show not only spiral morphologies resembling the fingerprinted texture of N*-LC in polarizing optical microscope but also bisignate Cotton effects in CD spectra, indicating the formation of a helically π-stacked structure in terms of the main chains of H-PEDOT. In addition, the signs of the bisignate Cotton effect are strictly determined by the helicity of the N*-LC. The present N*-LC is the first reaction field exhibiting photoinvertible chirality with extremely high fatigue resistance and serves as an asym. medium for electrochem. polymerization, leading to dynamic helicity control of conjugated polymers. In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7Category: benzothiophene).

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 also used in the manufacturing of dyes such as thioindigo.Category: benzothiophene

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

Full Color Light Responsive Diarylethene Inks for Reusable Paper was written by Jeong, Woomin;Khazi, Mohammed Iqbal;Park, Dong-Hoon;Jung, Young-Sik;Kim, Jong-Man. And the article was included in Advanced Functional Materials in 2016.Reference of 90560-10-4 This article mentions the following:

“Digitalization” represents one approach to shift society’s dependence on paper-based communication. However, thus far, this tactic has not had a significant impact on global paper consumption, which has risen over the past few decades. The escalating demand of paper making and consumption has resulted in an intensified neg. effect on the environment. Because of this, the development of rewritable paper or erasable ink appears to be an ideal approach to alleviate the increasing demand for paper. In the investigation described herein, novel light-stimulated (UV-vis), reversible color switching, photochromic diarylethene (DE) derivatives are designed, which serve as cyan, magenta, and yellow colored ink materials for full color ink-jet printing. The structures of the DE derivatives are unique in that they contain hydrophilic ethylene glycol chains that enable them to be compatible with aqueous based, ink-jet printing systems. The results of these studies demonstrate that the new DE derivatives can be used in a printing system based on the “write-erase-write” concept that utilizes the same paper multiple times. The approach appears to be ideal for reducing the neg. environmental consequences of paper production and consumption. In the experiment, the researchers used many compounds, for example, 6-Methoxybenzo[b]thiophene (cas: 90560-10-4Reference of 90560-10-4).

6-Methoxybenzo[b]thiophene (cas: 90560-10-4) 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 raloxifene, zileuton, sertaconazole, and also BTCP.Reference of 90560-10-4

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

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

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

C_17,20-Lyase inhibitors I. Structure-based de novo design and SAR study of C_17,20-lyase inhibitors was written by Matsunaga, Nobuyuki;Kaku, Tomohiro;Itoh, Fumio;Tanaka, Toshimasa;Hara, Takahito;Miki, Hiroshi;Iwasaki, Masahiko;Aono, Tetsuya;Yamaoka, Masuo;Kusaka, Masami;Tasaka, Akihiro. And the article was included in Bioorganic & Medicinal Chemistry in 2004.HPLC of Formula: 70060-13-8 This article mentions the following:

Novel nonsteroidal C_17,20-lyase inhibitors were synthesized using de novo design based on its substrate, 17α-hydroxypregnenolone, and several compounds exhibited potent C_17,20-lyase inhibition. However, in vivo activities in inhibiting testosterone biosynthesis were short-lasting, and to improve the duration of action, a series of benzothiophene derivatives were evaluated. As a result, 4-[(E)-4-(5-fluorobenzo[b]thiophen-2-yl)-3-buten-2-yl]-1H-imidazole, (S)-4-[(E)-4-(5-fluoro-3-methylbenzo[b]thiophen-2-yl)-3-buten-2-yl]-1H-imidazole, and 4-(E)-4-(5-fluorobenzo[b]thiophen-2-yl)-2-methyl-3-buten-2-yl-1H-imidazole (I) (IC₅₀=4-9 nM) and 4-[(E)-3-(5-fluoro-3-methylbenzo[b]thiophen-2-yl)-2-propen-1-yl]-1H-imidazole (IC₅₀=27 nM) were identified to have powerful in vivo efficacy with extended duration of action. The key structural determinants for the in vivo efficacy were demonstrated to be the 5-fluoro group on the benzothiophene ring and the 4-imidazolyl moiety. Superimposition of I and 17α-hydroxypregnenolone demonstrated their structural similarity and enabled rationalization of the pharmacol. results. In addition, selected compounds were also identified to be potent inhibitors of human enzyme with IC₅₀ values of 20-30 nM. These results suggest that some benzothiophene inhibitors described in this paper may be promising agents for the treatment of prostate cancer. In the experiment, the researchers used many compounds, for example, 5-Fluoro-1-benzothiophene-2-carboxylic acid (cas: 70060-13-8HPLC of Formula: 70060-13-8).

5-Fluoro-1-benzothiophene-2-carboxylic acid (cas: 70060-13-8) 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.HPLC of Formula: 70060-13-8

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

One-pot conversion of aromatic bromides and aromatics into aromatic nitriles via aryllithiums and their DMF adduct was written by Ushijima, Sousuke;Moriyama, Katsuhiko;Togo, Hideo. And the article was included in Tetrahedron in 2011.HPLC of Formula: 55219-11-9 This article mentions the following:

Various aromatic bromides and iodides were smoothly converted into the corresponding aromatic nitriles in good to moderate yields by the treatment with n-butyllithium and subsequently DMF, followed by treatment with mol. iodine in aq NH₃. The same treatment of typical aromatics and heteroaromatics with n-butyllithium and subsequently DMF, followed by treatment with mol. iodine in aq NH₃ also provided the corresponding aromatic nitriles in good yields. Moreover, the same treatment of aromatic bromides and aromatics with half amount of DIH (1,3-diiodo-5,5-dimethylhydantoin) instead of mol. iodine worked effectively to give the corresponding aromatic nitriles, resp., in good yields. These reactions are novel and environmentally benign one-pot methods for the preparation of aromatic nitriles from aromatic bromides and aromatics, resp., through the formation of aryllithiums and their DMF adducts. In the experiment, the researchers used many compounds, for example, Benzo[b]thiophene-2-carbonitrile (cas: 55219-11-9HPLC of Formula: 55219-11-9).

Benzo[b]thiophene-2-carbonitrile (cas: 55219-11-9) belongs to benzothiophene derivatives. Benzothiophene is relatively a stable molecule. The electrophilic substitution of benzothiophene systems is much less regioselective than that of indoles. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.HPLC of Formula: 55219-11-9

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