Day: November 20, 2020

1127-35-1, Benzo[b]thiophene-3(2H)-one 1,1-Dioxide is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: Benzo[b]thiophen-3(2H)-one 1,1-dioxide (BTD) (1mmol) and aldehyde2a-2d (1 mmol) were dissolved in 3 mL ethanol and refluxed for4-5 h. The progress of the reactionwas monitored by TLC. After completion,the reaction mass was cooled and filtered. The product obtainedwas crystallized from hot absolute ethanol (Scheme 1)., 1127-35-1

As the paragraph descriping shows that 1127-35-1 is playing an increasingly important role.

Reference£º
Article; Bhagwat, Archana A.; Mohbiya, Dhanraj R.; Avhad, Kiran C.; Sekar, Nagaiyan; Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy; vol. 203; (2018); p. 244 – 257;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.20699-85-8,Methyl 5-aminobenzo[b]thiophene-2-carboxylate,as a common compound, the synthetic route is as follows.

To a solution of compound IV of Scheme IV (500 mg, 2.42 mmol) in CH2CI2 (35 mL) was added slowly bromo-acetyl chloride (320 muL, 2.045 mmol) in CH2CI2 (15 mL) at rt. Then, DIEA (422 muL, 2.42 mmol) was added dropwise. The reaction mixture was left to stir at rt for 3 hours. Water was added, and the reaction mixture was extracted with CH2CI2, dried and solvent evaporated in vacuo to yield 5-(2-Bromo-acetylamino)- benzo[b]thiophene-2-carboxylic acid methyl ester (XIV) quantitatively.

20699-85-8, The synthetic route of 20699-85-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; S*BIO PTE LTD; WO2006/101454; (2006); A1;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

20699-85-8, Methyl 5-aminobenzo[b]thiophene-2-carboxylate is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Production Example 4012240] A mixture of 300 mg of methyl 5-aminobenzo[b] thiophene-2-carboxylate, 310 g of 1 -ethyl-3-(3-dimethylami- nopropyl)carbodiimide hydrochloride, 294 mg of benzoic acid, 18.4 mg of N,N-dimethyl-4-aminopyridine, and 20 ml of tetrahydrofuran was stirred for 24 hours at room temperature. The reaction mixture was concentrated under reduced pressure, and tert-butyl methyl ether was added to the residues. The organic layer was washed with a 1 M aqueous hydrochloric acid solution, a 1 M aqueous sodium hydrogen carbonate solution, and saturated saline, dried over magnesium sulfate, and concentrated under reduced pressure, thereby obtaining 318 mg of methyl 5-benzoylaminobenzo [b]thiophene-2-carboxylate (hereinafier, described as a ?compound 68 of the present invention?). 12241] Compound 68 of the Present Invention12242] ?H-NMR (CDC13) oe: 8.40 (br s, 1H), 8.05 (s, 1H),7.91-7.90 (m, 3H), 7.86-7.84 (m, 1H), 7.58-7.53 (m, 4H),3.96 (s, 3H).

20699-85-8, The synthetic route of 20699-85-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; SUMITOMO CHEMICAL COMPANY, LIMITED; Mukumoto, Fujio; Tamaki, Hiroaki; Kusaka, Shintaro; Iwakoshi, Mitsuhiko; US2015/282482; (2015); A1;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.6386-80-7,Benzo[b]thiophene-6-carbaldehyde,as a common compound, the synthetic route is as follows.

6386-80-7, To a mixture of compound B-202 (1 .0 g, 6.2 mmol) and hydroxylamine hydrochloride (0.64 g, 9.3 mmol) in anhydrous dichloromethane (10 mL) was added triethylamine (0.94 g, 9.3 mmol) at room temperature. The mixture was stirred overnight. On completion, the reaction mixture was quenched with water and extracted with dichloromethane (3 x 40 mL). The combined organic layers were washed with water and brine, dried over anhydrous sodium sulfate, concentrated in vacuo and purified by silica gel chromatography [petroleum ether: ethyl acetate = 1 : 1 ] to give compound B-203 (0.90 g, 82% yield) as a yellow solid. LCMS: (ES+) m/z (M+H)+ = 178.2, tR= 0.704.

As the paragraph descriping shows that 6386-80-7 is playing an increasingly important role.

Reference£º
Patent; FORUM PHARMACEUTICALS, INC.; BURNETT, Duane, A.; BURSAVICH, Matthew, Gregory; MCRINER, Andrew, J.; WO2015/66371; (2015); A1;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

95-15-8,95-15-8, Thianaphthene is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

A. Preparation of 2,3-dibromobenzo[b]thiophene. A solution of 64 g of bromine in 50 ml of chloroform was added to a solution of 26.8 g of 1-benzothiophene in 150 ml of chloroform. After stirring for approximately 18 hours, the reaction mixture was washed sequentially with 0.1N sodium hydroxide, 0.1N aqueous sodium thiosulfate, and water. The organic layer was dried over magnesium sulfate and evaporated to dryness. The residue was crystallized twice from methanol to provide 20.54 g of the desired subtitled intermediate, m.p. 57-59 C. Analysis for C8 H4 Br2 S; Calculated: C, 32.91; H, 1.38; Found: C, 32.72; H, 1.49.

The synthetic route of 95-15-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Eli Lilly and Company; US4659717; (1987); A;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

20532-33-6, 5-Chlorobenzothiophene is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Compound 14d was converted to Compound 14e using the method described in Eur. J. Med. Chem. 2001, 36(1), 55-62). Compound 14e was oxidized with selenium dioxide, to yield Compound 14f using the method described in British patent 1399089(1971): HPLC: 3.78 min; MS (ES) m/z 239 (MH-).

20532-33-6, 20532-33-6 5-Chlorobenzothiophene 11309754, abenzothiophene compound, is more and more widely used in various fields.

Reference£º
Patent; Hawkins, Michael J.; Greco, Michael N.; Powell, Eugene; de Garavilla, Lawrence; Maryanoff, Bruce E.; US2005/176769; (2005); A1;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.95-15-8,Thianaphthene,as a common compound, the synthetic route is as follows.

95-15-8, A. 2,3-Dibromobenzo[b]thiophene STR16 Benzothiophene (26.8 g, 0.2 mol) was dissolved in 150 mL CHCl3 and treated with a solution of bromine (64 g, 0.4 mol) in 75 mL CHCl3 dropwise over an hour. The reaction was allowed to stir overnight then cautiously quenched with saturated aqueous Na2 CO3 until no gas evolution was evident. The layers were separated and the organic layer was first washed with saturated aqueous Na2 CO3 then with water. It was dried over MgSO4 and concentrated under vacuum to a solid. Recrystallized from MeOH to obtain 16.5 g (57 mmol, 28%) of a white fluffy solid. 1 H NMR (CDCl3) delta7.77-7.71 (m, 2H), 7.46-7.38 (m, 2H).

As the paragraph descriping shows that 95-15-8 is playing an increasingly important role.

Reference£º
Patent; Eli Lilly and Company; US6133262; (2000); A;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

95-15-8,95-15-8, Thianaphthene is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Under a nitrogen atmosphere, 10.0 g (0.075 mol) of benzo[b]thiophene and diethyl ether were loaded, and were then stirred at 0C. 51 Milliliters (0.082 mol) of 1.60-M n-butyllithium were dropped to the mixture and then the whole was stirred for 1 hour. After that, 2.6 g (0.082 mol) of sulfur were added to the resultant at 0C and then the mixture was stirred at room temperature for 6 hours. The reaction liquid was poured into ice water and then hydrochloric acid was used to adjust the pH of the mixture to 1, followed by the addition of 200 ml of diethyl ether. An organic layer was washed with distilled water (2¡Á100 ml). After that, the resultant organic layer was dried with anhydrous magnesium sulfate, and then magnesium sulfate was separated by filtration and the solvent was distilled off under reduced pressure. 100 Milliliters of tetrahydrofuran (THF) were added to the remainder, and then sodium borohydride was added to the mixture while the mixture was stirred at 0C, followed by stirring at room temperature for 2 hours. The reaction liquid was poured into ice water and then hydrochloric acid was used to adjust the pH of the mixture to 1, followed by the addition of 200 ml of diethyl ether. An organic layer was washed with distilled water (2¡Á100 ml). After that, the resultant organic layer was dried with anhydrous magnesium sulfate, and then magnesium sulfate was separated by filtration and the solvent was distilled off under reduced pressure. The resultant residue was purified by column chromatography to provide 11.2 g (0.067 mol, 89% yield) of an intermediate B-1.

95-15-8 Thianaphthene 7221, abenzothiophene compound, is more and more widely used in various fields.

Reference£º
Patent; Nippon Steel & Sumikin Chemical Co., Ltd.; SUDA Mitsuru; KAI Takahiro; MATSUMOTO Megumi; EP2628742; (2013); A1;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

5381-20-4,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.5381-20-4,Thianaphthene-3-carboxaldehyde,as a common compound, the synthetic route is as follows.

Benzo[b]thiophene-3-carbaldehyde (1.0 equiv.) in toluene (5 mL) was slowly added with constant stirring to a 50 mL three-necked round bottomf lask containing substituted 2-aminobenzothiazole (1.0 equiv.) and anhydrous toluene (10 mL). The reaction mixture was refluxed for 10 h and then cooled down to room temperature. The solvent was removed under reduced pressure, and the crude product was purified by recrystallization using N,N-dimethylethanamine/acetone/petroleum etherto yield pure imines 1a-1f.

The synthetic route of 5381-20-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Zhang, Peiwei; Tang, Chenghao; Chen, Zhiwei; Wang, Bo; Wang, Xiang; Jin, Linhong; Yang, Song; Hu, Deyu; Phosphorus, Sulfur and Silicon and the Related Elements; vol. 189; 4; (2014); p. 530 – 540;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.360575-29-7,Methyl 4-bromobenzo[b]thiophene-2-carboxylate,as a common compound, the synthetic route is as follows.

12113] A mixture of 500 mg of methyl 4-bromobenzo[b] thiophene-2-carboxylate, 161 mg of methylboronic acid,g of potassium phosphate, 151 mg ofa [1,1?-bis(diphe- nylphosphino)ferrocene]palladium (II) dichloride dichloromethane adduct, 6 ml of 1,4-dioxane, and 0.1 ml of waterstirred for 3 hours at 100 C. under a nitrogen atmosphere. Afier being cooled to room temperature, the reaction mixture was concentrated under reduced pressure. Chloroform and water were added to the residues, and insoluble matter was separated by filtration. Tbe filtrate was extracted using chloroform, and the organic layer was washed with saturated saline, dried over magnesium sulfate, and then concentrated under reduced pressure. The residues were subjected to silica gel colunm chromatography, thereby obtaining 340 mg of methyl 4-methylbenzo[b]thiophene-2- carboxylate (hereinafier, described as a ?compound 22 ofpresent invention?).12114] Compound 22 of the Present InventionMe12115] ?H-NMR (CDC13) oe: 8.17-8.16 (m, 1H), 7.71-7.69(m, 1H), 7.37-7.35 (m, 1H), 7.20-7.18 (m, 1H), 3.95 (s, 3H),2.64 (s, 3H)., 360575-29-7

The synthetic route of 360575-29-7 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; SUMITOMO CHEMICAL COMPANY, LIMITED; Mukumoto, Fujio; Tamaki, Hiroaki; Kusaka, Shintaro; Iwakoshi, Mitsuhiko; US2015/282482; (2015); A1;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem