Day: November 23, 2020

4923-87-9, 5-Bromobenzothiophene is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solution of 5-bromobenzothiophene (12, 11.5 g, 45.1 mmol) in toluene (150 mL) under argon was added palladium acetate (0.84 g, 3.75 mmol), P(iBuNCH2CH2)3N (2.6 g, 7.6 mmol), and sodium tert-butoxide (5.4 g, 56.3 mmol). The reaction mixture was stirred for 2 min at room temperature, and then 7-bromodihydroisoquinolinone (11, 9.0 g, 37.5 mmol) was added. The resultant solution was heated at 70 C for 30 min, and then it was cooled to room temperature. The reaction was quenched with aqueous ammonium chloride and extracted with dichloromethane. The organic extract was washed with brine, dried over sodium sulfate, and concentrated in vacuo. The residue obtained was purified by flash column chromatography (eluent: 80/20 dichloromethane/EtOAc) to give the desired 4-(5-benzothiophen-yl)dihydroisoquinolinone (13, 8.84 g, 63%) as a light yellow foam.

4923-87-9, The synthetic route of 4923-87-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Hu, Min; Guzzo, Peter R.; Zha, Congxiang; Nacro, Kassoum; Yang, Yuh-Lin; Hassler, Carla; Liu, Shuang; Tetrahedron Letters; vol. 53; 7; (2012); p. 846 – 848;,
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

1) The compound of formula 2 benzothiophene (2.68 g, 20 mmol)Dissolved in refined tetrahydrofuran, stirred under argon and 195K conditions,2.4 mol / L of n-butyllithium (9.75 mL, 23 mmol) was slowly injected,Continue low temperature reaction for half an hour. Iodomethane (3 mL, 23 mmol)Injected into the reaction flask, the reaction mixture was stirred at low temperature for an hour,Naturally rose to room temperature, adding an appropriate amount of water to terminate the reaction.Liquid separation and extraction with methylene chloride. Combine the organic phases, whirl, remove the solvent and dry. The residue was chromatographed on petroleum ether, silica gel to give 2.67 g of a colorless solid,Yield: 90%.

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

Reference£º
Patent; Jiangxi Science and Technology Normal University; Pu Shouzhi; Liu Gang; Li Gang; (14 pag.)CN106905312; (2017); A;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.22913-24-2,Methyl benzo[b]thiophene-2-carboxylate,as a common compound, the synthetic route is as follows.

A ruthenium complex (3.0 mg, 5.6 mumol) was sequentially added to a 5 mL sealed tube with a stirrer, and the ester substrate was added.(0.56 mmol), B2pin2 (0.14 g, 0.56 mmol) and 1 mL of tetrahydrofuran.Next, the 5 mL sealed tube was screwed and removed from the glove box and placed under an oil bath at 120 C to heat and stir the reaction for 12 hours. When the reaction solution is cooled to room temperature, it is quenched with ethyl acetate.The low boiling organics should then be drained on a rotary evaporator. Finally, add an equimolar amount of dibromomethane to the substrate asThe internal standard measures the nuclear magnetic yield of the product, and after obtaining the nuclear magnetic yield, the low-boiling organic matter in the crude product is again removed, and finally,The column is separated and purified. Light yellow oil, the eluent used in the column was ethyl acetate: petroleum ether = 1:80-1:40. product1H NMR yield: 70%, isolated yield: 47%, 42 mg.

22913-24-2, The synthetic route of 22913-24-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Taizhou University; Yao Wubing; Huang Xiangyun; Yu Meimei; (11 pag.)CN107936047; (2018); A;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

154650-81-4, Benzo[b]thiophene-6-carbonitrile is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,154650-81-4

Compound 28 (14 g, 0.088 mol) in dry THF (350 mL) was purged with nitrogen. The mixture was then cooled (-90 0C) with liquid nitrogen bath and ra-BuLi (2.5 M in hexanes, 42 mL, 0.105 mol) was added dropwise with stirred. The mixture was stirred for a further 30 min, and B(OMe)3 (18 g, 0.173 mol) was added at -90 0C. After 30 min, aqueous HCl (2M, 200 mL) was added. The mixture was stirred for a further 30 min, allowed to warm to room temperature (30 0C), poured into water (100 mL). The mixture was extracted with EtOAc (400 mLx3). The combined organic layers were washed with water, brine, dried over Na2SO4 and concentrated to give a crude product, which was crystallized with EtOAc/PE (1:2, 100 mL) to give the title compound (12 g, 72%) as a white solid.

As the paragraph descriping shows that 154650-81-4 is playing an increasingly important role.

Reference£º
Patent; TARGEGEN INC.; WO2009/49028; (2009); A1;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

6314-28-9, Benzo[b]thiophene-2-carboxylic acid is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

6314-28-9, Thionyl chloride (0.81 mL, 11.1 mmol) was added to a solution of benzo[b]thiophene-2-carboxylic acid 3 (0.4 g, 2.24 mmol), in pyridine (0.3 mL, 1.8 mmol) and toluene (15 mL, 14.1 mmol) at reflux. The reaction mixture was quenched in ice water and the toluene evaporated in vacuo. The acid chloride was extracted with distilled DCM (2¡Á25 mL, 2¡Á10 mL) and the combined organic extracts washed with distilled water (2¡Á20 mL) and dried. The solvent was evaporated under reduced pressure to give a brown residue, which was purified using flash chromatography with DCM as the eluent to yield 11a17 (0.27 g, 61%) as a colourless solid. 1H NMR (CDCl3, 300 MHz): delta 7.50 (m, 2H), 7.91 (m, 2H), 8.27 (s, 1H). 13C NMR: delta 123.1 (C3), 125.9 (C7), 126.9 (C4), 128.9 (C5 and C6), 136.1 (C2), 138.3 (C3a), 144.3 (C7) and 161.9 (CO). MS (CI+), m/z 197, 199 [MH+1, 35Cl, 37Cl].

The synthetic route of 6314-28-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Article; Mbere, Johana M.; Bremner, John B.; Skelton, Brian W.; White, Allan H.; Tetrahedron; vol. 67; 36; (2011); p. 6895 – 6900;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.6314-28-9,Benzo[b]thiophene-2-carboxylic acid,as a common compound, the synthetic route is as follows.

6314-28-9, To a CH2CI2 (70 ml_, 0.2 M) solution of 1 ,1 -dim ethyl ethyl (3R.4R)- 3-hydroxy-4-[(L-leucylamino)methyl]-1-pyrrolidinecarboxylate (4.6 g, 14.1 mmol) was added i-benzothiophene-2-carboxylic acid (2.76 g, 15.5 mmol ), EDC (3.24 g, 16.9 mmol), HOOBt (0.46 g, 2.82 mmol) and NMM (3.8 ml_, 35.26 mmol), and the mixture was stirred at room temperature overnight. The reaction mixture was quenched by the addition of 1 N HCI, and the phases were separated. The organic solution was washed sequentially with saturated NaHCO3 and brine, dried (Na2SO4), filtered and concentrated to give crude product. Purification by silica chromatography (40 – 100% ethyl acetate/hexanes) gave the title compound as a white foam in 87% yield (6.0 g). LCMS (m/z): 490 (M+H)+.

6314-28-9 Benzo[b]thiophene-2-carboxylic acid 95864, abenzothiophene compound, is more and more widely used in various fields.

Reference£º
Patent; SMITHKLINE BEECHAM CORPORATION; WO2007/82262; (2007); A2;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

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.,5381-20-4

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.

As the paragraph descriping shows that 5381-20-4 is playing an increasingly important role.

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

5381-20-4, Thianaphthene-3-carboxaldehyde is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

5381-20-4, Synthesis of 2-(4-chlorophenyl)benzo[b]thiophene-3-carbaldehyde (29b): Benzo[b]thiophene-3-carbaldehyde (27) (162 mg, 1.0 mmol) in THF (2 mL) was added to a solution of TMPZnCl.LiCl (2) (1.3 M in THF, 0.85 mL, 1.1 mmol) at 25 C. and the reaction mixture was then stirred at this temperature for 30 min according to TP 2. Pd(dba)2 (17 mg, 3 mol %) and P(o-furyl)3 (14 mg, 6 mol %) dissolved in THF (2 mL), and mixed with 1-chloro-4-iodobenzene (310 mg, 1.3 mmol, 1.3 equiv) were then transferred via cannula to the reaction mixture. The resulting mixture was stirred for 2 h at 25 C. The reaction mixture was then quenched with a sat. aq. NH4Cl solution (20 mL), extracted with diethyl ether (3¡Á50 mL) and driedanhydrous Na2SO4. After filtration, the solvent was evaporated in vacuo. Purification by flash-chromatography (CH2Cl2/n-pentane, 1:3) furnished compound 29b (236 mg, 87%) as a colourless solid.m.p.: 99.7-101.4 C.1H-NMR (300 MHz, CDCl3) delta: 10.02 (s, 1 H), 8.76 (d, J=8.0 Hz, 1 H), 7.83 (d, J=8.0 Hz, 1 H), 7.42-7.54 (m, 6 H).13C-NMR (75 MHz, CDCl3) delta: 186.2, 158.9, 137.8, 136.9, 136.4, 131.6, 130.3, 130.0, 129.2, 126.4, 126.0, 125.2, 121.6.MS (70 eV, El) m/z (1)/0): 272 (100) [M+], 237 (54), 208 (34), 165 (12), 118 (20), 104 (23).IR (ATR) v (cm-1): 3054, 2969, 2867, 2362, 1947, 1739, 1671, 1590, 1562, 1517, 1482, 1457, 1431, 1407, 1397, 1346, 1265, 1218, 1187, 1161, 1135, 1109, 1091, 1050, 1020, 1012, 971, 952, 938, 846, 830, 813, 748, 723, 716, 710, 698, 667, 638, 616, 610, 603.HRMS (El) for C15H9CIOS (272.0063): 272.0057.

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

Reference£º
Patent; Knochel, Paul; Mosrin, Marc; US2011/288296; (2011); 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.20699-85-8,Methyl 5-aminobenzo[b]thiophene-2-carboxylate,as a common compound, the synthetic route is as follows.

A mixture of 300 mg of methyl 5-aminobenzo[b]thiophene-2-carboxylate, 316 g of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride, 275 mg of benzoic acid, 18 mg of N,N-dimethyl-4-aminopyridine, and 10 ml of tetrahydrofuranwas stirred for 24 hours at room temperature. The reaction mixture was concentrated under reducedpressure, and tert-butyl methyl ether was added to the residues. The organic layer was washed with 1 M aqueoushydrochloric acid solution, 1 M aqueous sodium hydrogen carbonate solution, and saturated saline, dried over magnesiumsulfate, and concentrated under reduced pressure, thereby obtaining 318 mg of methyl 5-(benzoylamino)benzo[b]thiophene-2-carboxylate., 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; EP2926660; (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.4923-87-9,5-Bromobenzothiophene,as a common compound, the synthetic route is as follows.

General procedure: The appropriate Grignard reagent (1.3 equiv) generated according to GP 1 was added to ketone 15 (1.0 equiv) suspended in THF (2mL/mmol) and heated to 60C for 2h. At 25C the mixture was quenched with saturated aqueous NH4Cl solution and extracted with Et2O. The organic phases were dried over Na2SO4 and concentrated under reduced pressure. The crude product was purified by recrystallization or by column chromatography over silica gel.

4923-87-9, As the paragraph descriping shows that 4923-87-9 is playing an increasingly important role.

Reference£º
Article; Toth, Krisztian; Hoefner, Georg; Wanner, Klaus T.; Bioorganic and Medicinal Chemistry; vol. 26; 12; (2018); p. 3668 – 3687;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem