Category: 10243-15-9

Synthesis and application of 1-(2-methyl-3-benzothienyl)-2-[3-methyl-2-thienyl]perfluorocyclopentene was written by Li, Gang;Liu, Gang;Pu, Shouzhi. And the article was included in Advanced Materials Research (Durnten-Zurich, Switzerland) in 2015.HPLC of Formula: 10243-15-9 This article mentions the following:

A novel unsym. photochromic diarylethene compound 1-(2-methyl-3-benzothienyl)-2-[3-methyl-2-thienyl]perfluorocyclopentene (I) was designed and constructed successfully. Its optoelectronic properties have been discussed systematically, such as photochromic, fluorescence switch, kinetics experiments in hexane solution and PMMA. The consequences showed that this compound exhibited good reversible photochromism. The maxima absorption of compound closed-ring isomer is 468 nm. Upon irradiation with 297 nm UV light, its fluorescence intensity decreased along with the photochromism from open-ring isomers to closed-ring isomers upon irradiation with 297 nm UV light. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9HPLC of Formula: 10243-15-9).

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 also used in the manufacturing of dyes such as thioindigo.HPLC of Formula: 10243-15-9

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Research on photochromic materials with synthesis and properties of 1-(2-methyl-3-benzothiophene)-2-[2-methyl-5-(3-cyanophenyl)-3-thienyl]perfluorocyclopentene was written by Liao, Guanming;Zheng, Chunhong;Pu, Shouzhi. And the article was included in Applied Mechanics and Materials in 2014.Application of 10243-15-9 This article mentions the following:

An asym. photochromic diarylethene, 1-(2-Methyl-3-benzothiophene)-2-[2-methyl-5-(3-cyanophenyl)-3-thienyl]perfluorocyclopentene (I) was synthesized and its photochromic and fluorescent properties in hexane solution as well as PMMA films were investigated in detail. Exptl. results showed that compound I exhibited remarkable photochromism. Upon irradiation with 297 nm UV light, the colorless solution of compound I turned to violet with a new visible absorption band centered at 535 nm (ε = 1.08 x 10⁴ L mol^-1 cm^-1) attributable to the closed-ring isomer II. The emission intensity of diarylethene I in a photostationary state was quenched to calculated 32% in hexane and 43% in PMMA film. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Application of 10243-15-9).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Application of 10243-15-9

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Synthesis and properties of a new unsymmetrical diarylethene bearing benzothiophene and thiophene rings was written by Jing, Shuhong;Pu, Shouzhi;Fan, Congbin. And the article was included in Advanced Materials Research (Durnten-Zurich, Switzerland) in 2013.Recommanded Product: 10243-15-9 This article mentions the following:

A new unsym. isomeric diarylethene was synthesized, namely 1-[2-methyl-(5-(4-hydroxyl) phenyl)-3-thienyl]-2-(2-methyl-3-benzothiophene) perfluorocyclopentene. Its photochromic reactivity both in solution and in PMMA film, photoconversion ratio at photostationary state, and fluorescence were investigated in detail. The compound displayed excellent photochromism both in solution and in PMMA film. The isomeric compound also functioned as a fluorescence switch and concentration dependence on the fluorescence spectrum in hexane. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Recommanded Product: 10243-15-9).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) 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 zileuton, raloxifene, and sertaconazole, and also BTCP.Recommanded Product: 10243-15-9

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Synthesis and photochromism studies of 1-(2-methyl-3-benzothiophene)-2-[2-methyl-5-(4-aminomethanephenyl)-3-thienyl]perfluorocyclopentene was written by Dong, Xiaorong;Wei, Shasha;Liu, Gang;Pu, Shouzhi. And the article was included in Advanced Materials Research (Durnten-Zurich, Switzerland) in 2014.HPLC of Formula: 10243-15-9 This article mentions the following:

A new unsym. photochromic diarylethene compound, 1-(2-methyl-3-benzothiophene)-2-[2-methyl-5-(4-aminomethanephenyl)]-3-thienyperfluorocyclopentene (I) was synthesized and its photochromic properties were examined The result indicated that the compound I changed the color from colorless to purple upon irradiation with 297 nm UV light, in which absorption maxima was observed at 564 nm in acetonitrile. The kinetic experiments showed that the cyclization and cycloreversion processes were zeroth and first order reactions, resp. This new photochromic system also exhibited fluorescence switching in acetonitrile solution In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9HPLC of Formula: 10243-15-9).

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 raloxifene, zileuton, and sertaconazole, and also BTCP.HPLC of Formula: 10243-15-9

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Practical Synthesis of Photochromic Diarylethenes in Integrated Flow microreactor Systems was written by Asai, Tatsuro;Takata, Atsushi;Nagaki, Aiichiro;Yoshida, Jun-ichi. And the article was included in ChemSusChem in 2012.Safety of 3-Bromo-2-methylbenzo[b]thiophene This article mentions the following:

An effective method for the synthesis of photochromic diarylethenes through the generation of heteroaryllithiums and subsequent reaction with octafluorocyclopentene has been developed by using integrated flow microreactor systems. Reactions can be conducted without using cryogenic conditions by virtue of effective temperature and residence time control, although much lower temperatures (<-78 °C) are needed for batch macroreactions. Moreover, the synthesis of unsym. diarylethenes, which is difficult to achieve when using conventional batch macrosystems, has been accomplished based on the selective introduction of one aryl group to give arylheptafluorocyclopentene followed by the introduction of another aryl group. The productivity of the laboratory-scale system is approx. 0.5 mmol min^-1. Therefore, the present integrated flow microreactor method serves as a practical way of synthesizing various photochromic diarylethene derivatives 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. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Safety of 3-Bromo-2-methylbenzo[b]thiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Acetylation of 2-bromo-3-methyl- and 3-bromo-2-methylthianaphthene and the Schmidt reaction of the products was written by Matsuki, Yasuo;Ito, Ichi. And the article was included in Nippon Kagaku Zasshi in 1967.Safety of 3-Bromo-2-methylbenzo[b]thiophene This article mentions the following:

2-Bromo-3-methylthianaphthene (11.4 g.) in 35 ml. PhNO2 was treated with 4.35 g. AcCl and 7.35 g. AlCl3 at 10° to give 9.2% 4-acetyl-2-bromo-3-methylthianaphthene (I), m. 123-4°, 2,4-dinitrophenylhydrazone m. 278° (decomposition), 67.4% Ia (R1 = Br, R2 = Me, R3 = Ac) (II), m. 114-15°; 2,4-dinitrophenylhydrazone m. 270-1°, and 19.1% Ia (R1 = Ac, R2 = Me, R3 = H) (III). Reaction at 25° gave 9.9% I, 72.7% II and 26.6% III. Similar reaction of 3-bromo-2-methylthianaphthene gave 94.1% Ia (R1 = Me, R2 = Br, R3 = Ac), m. 96-7°, 2,4-dinitrophenylhydrazone m. 282° (decomposition), at 0° and 80.6% 3-acetyl-2-methylthianaphthene at 10°. The results were attributed to the electron density at 3 position. II (1 g.) was dissolved in 80 ml. MeOH containing 0.23 g. NaOH and hydrogenated over Pd-C to yield 0.66 g. Ia (R1 = H, R2 = Me, R3 = Ac), m. 42-3°; 2,4-dinitrophenylhydrazone m. 282° (decomposition). II (2.7 g.) was treated with KClO (3.8-4 g.) in 30-5 ml. H2O and 20 ml. dioxane at 55-60° and then at 80° to give 2.62 g. Ia (R3 = CO2H) (Ib, R1 = Br, R2 = Me) (IV), m. 261-2°; Me ester m. 131-2°. Similarly the following Ib were obtained (R1, R2, m.p. and m.p. of Me ester given): H, Me, 226-7°, -; Me, Br (V), 272-3°, 98-9°; Me, H, 228-9°, 48-9°. Heating IV with Raney Ni yielded p-iso-PrC6H4CO2H. Similarly V gave p-PrC6H4CO2H. II (4.04 g.) in 19.5 ml. AcOH and 1.95 g. H2SO4 was treated with 1.95 g. NaN3 at 65-70° to give 63% Ia (R1 = Br, R2 = Me, R3 = AcNH) (VI), m. 196-7°, and 13% Ia (R1 = Br, R2 = Me, R3 = NH2) sulfate, m. 234°. Similarly the following Ia were obtained (R1, R2, R3, % yield, m.p. of the acetamido derivative, % yield and m.p. of amine sulfate given): Me, Br, AcNH, 71, 181.5-2°, 19, 272° (decomposition); AcNH, Me, H, 50, 180-1°, -, -; Me, AcNH, H, 82, 184-5°, -, -. Reduction of VI with Na-Hg gave 6-acetamido-3-methylthianaphthene. 2-(N-Methylcarbamoyl)-3-methylthianaphthene, m. 139-40°, and 3-(N-methylcarbamoyl)-2-methylthianaphthene, m. 166-7°, were prepared 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 is relatively a stable molecule. 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.Safety of 3-Bromo-2-methylbenzo[b]thiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Research on photochromic materials with synthesis and application of 1-(2-methyl-3-benzothienyl)-2-[2-methyl-(5-ethynyl)trimethylsilane-3-thienyl]perfluorocyclopentene was written by Ma, Lele;Xu, Hongyan;Liu, Gang. And the article was included in Advanced Materials Research (Durnten-Zurich, Switzerland) in 2014.Name: 3-Bromo-2-methylbenzo[b]thiophene This article mentions the following:

A new unsym. photochromic diarylethene compound, (3-benzothienyl)((5-ethynyl)trimethylsilane-3-thienyl)perfluorocyclopentene I was synthesized, and its optoelectronic properties, such as photochromism and the fluorescence spectra of diarylethene I in hexane solution was investigated. The results showed that this compound exhibited reversible photochromism in solution to yield a cyclopentabenzothienobenzothiophene closed-ring isomer II with a UV/visible absorption at 538 nm. Its fluorescence intensity decreased along with the photochromism from open-ring isomers to closed-ring isomers upon irradiation with 297 nm UV light. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Name: 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 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.Name: 3-Bromo-2-methylbenzo[b]thiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

The preparation of some heteroaromatic and aromatic aldehydes was written by Katritzky, Alan R.;He, Hai-Ying;Long, Qiuhe;Cui, Xilin;Level, Julian;Wilcox, Allan L.. And the article was included in ARKIVOC [online computer file] in 2000.Recommanded Product: 3-Bromo-2-methylbenzo[b]thiophene This article mentions the following:

Heteroaromatic α- and β-carboxaldehydes were prepared by the formylation with DMF of α-lithio benzofuran, benzothiophene, N-methylbenzimidazole and 10-methylphenothiazine obtained by direct lithiation and β-lithio compounds from lithium-bromine exchange. Dialkoxybenzaldehydes were prepared by the formylation of dialkoxybenzenes with hexamethylenetetramine (HMTA) or by the alkylation of dihydroxybenzaldehydes with alkyl bromides or iodides. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Recommanded Product: 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 raloxifene, zileuton, sertaconazole, and also BTCP.Recommanded Product: 3-Bromo-2-methylbenzo[b]thiophene

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

Synthesis and photochromism studies of 1-(2-methyl-3-benzothiophenyl)-2-[2-methyl-5-(4-azidomethyl)-3-thienyl] perfluorocyclopentene was written by Tang, Yongjun;Xu, Hongyan;Pu, Shouzhi. And the article was included in Applied Mechanics and Materials in 2014.Related Products of 10243-15-9 This article mentions the following:

An unsym. photochromic diarylethene 1-(2-methyl-3-benzothiophenyl)-2-[2-methyl-5-(4-azidomethyl)-3-thienyl] perfluorocyclopentene was synthesized, and its optoelectronic properties were also investigated. The results showed that this compound exhibited reversible photochromism, changing from colorless to dark orange after irradiation with UV light in solution The open-ring isomer of the diarylethene 1o exhibited relatively strong fluorescence at 457 nm in acetonitrile solution (2 × 10-5 mol L-1) when excited at 287 nm. The fluorescence intensity decreased along with the photochromism upon irradiation with 297 nm light. The electrochem. properties indicated that the oxidation onset and the Eg of the open-ring isomer were lower than the closed-ring isomer. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Related Products of 10243-15-9).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Functionalized benzothiophenes are important constructs found in molecules with wide ranging biological activity and in organic materials. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.Related Products of 10243-15-9

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem

The considerable photostability improvement of photochromic terarylene by sulfone group was written by Jeong, Yong-Chul;Gao, Chunji;Lee, In Su;Yang, Sung Ik;Ahn, Kwang-Hyun. And the article was included in Tetrahedron Letters in 2009.HPLC of Formula: 10243-15-9 This article mentions the following:

A photochromic terarylene benzothiophene derivative which has a sulfone group on the upper benzothiophene ring is readily synthesized using Suzuki coupling reaction. It exhibits good photochromic properties. Interestingly, the closed form of this benzothiophene dioxide compound shows a good photostability as well as a thermal stability compared with its reduced analog, that provides a method to enhance the photostability of versatile photochromic terarylenes under UV. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9HPLC of Formula: 10243-15-9).

3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.HPLC of Formula: 10243-15-9

Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem