Tag: M.W:100-200

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.154650-81-4,Benzo[b]thiophene-6-carbonitrile,as a common compound, the synthetic route is as follows.

To a stirred solution of benzo[b]thiophene-6-carbonitrile (1.0 g, 6.289 mmol) in CHC13 (7 mL) and acetic acid (7 mL) was added NBS (1.34 g, 7.547 mmol) portionwise at 0C and the mixture stirred at rt for 48 hr. The reaction mixture was diluted with DCM (60 mL) and washed with saturated solution of sodium thiosulfate solution and NaHCO3 followed by brine. The organic layer was dried over sodium sulfate, concentrated under reduced pressure to afford the crude material which was purified by column chromatography using silica gel (100-200 mesh) and 2% EtOAc/hexane as eluent to 3-bromobenzo[b]thiophene-6-carbonitrile (0.8 g, 3.359 mmol, 53%) as off white solid. GCMS: 238 (mlz).

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

Reference£º
Patent; CURADEV PHARMA PRIVATE LTD.; BANERJEE, Monali; MIDDYA, Sandip; SHRIVASTAVA, Ritesh; RAINA, Sushil; SURYA, Arjun; YADAV, Dharmendra B.; YADAV, Veejendra K.; KAPOOR, Kamal Kishore; VENKATESAN, Aranapakam; SMITH, Roger A.; THOMPSON, Scott K.; WO2014/186035; (2014); A1;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

17402-83-4, Benzo[b]thiophen-4-amine is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

14.92 g of 4-aminobenzothiophene, 17.85 g of bis(2-chloroethyl)amine hydrochloride and 11.13 g of sodium carbonate were dissolved in 120 mL of n-butanol.The reaction was refluxed for 6 h, and cooled to give benzo[b]thiophen-4-ylpiperazine hydrochloride. The benzo[b]thiophen-4-ylpiperazine hydrochloride was dissolved in water, adjusted to pH 12 with 2 mol/L NaOH, and extracted with ethyl acetate.The ethyl acetate extract was washed successively with saturated sodium chloride solution and deionized water until neutral.Drying with anhydrous sodium sulfate, removing the solvent to obtain benzo[b]thiophen-4-ylpiperazine;, 17402-83-4

The synthetic route of 17402-83-4 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Wuhan Xing Hua Knowledge Pharmaceutical Technology Co., Ltd.; Lu Shan; Chen Jingrun; Zhang Chuantao; (16 pag.)CN109988162; (2019); A;,
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

4-Phenyl-piperidine-1-sulfonic acid amide (1.5 g, 6.24 mmol) was dissolved in ethanol (20 mL). Benzo[b]thiophene-3-carbaldehyde (1.0 g, 6.24 mmol) was then added and the reaction mixture was warmed to 45 C. overnight. The reaction mixture was cooled to room temperature and then treated with sodium borohydride (0.2 g, 5.29 mmol). The reaction was then quenched by addition of 1 N HCl. The reaction mixture was stirred overnight. The product precipitated from solution and was removed by vacuum filtration to yield the title compound as a white solid. 1H NMR (DMSO-d6): delta 7.99 (2H, q, J=12.0, 7.7 Hz), 7.86 (1H, dd, J=5.0 Hz), 7.66 (1H, s), 7.42 (2H, dt, J=14.0, 6.7 Hz), 7.35-7.24 (3H, m), 7.24-7.09 (2H, m), 4.37 (2H, d, J=5.8 Hz), 3.56 (2H, d, J=11.5 Hz), 2.75-2.59 (3H, m), 1.68 (2H, d, J=13.5 Hz), 1.31 (2H, dd, J=25.0, 13.5 Hz).

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

Reference£º
Patent; Abdel-Magid, Ahmed F.; Mehrman, Steven J.; US2006/270856; (2006); 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.3541-37-5,Benzo[b]thiophene-2-carboxaldehyde,as a common compound, the synthetic route is as follows.

General procedure: A mixture of amine 1 (46.4mg, 0.24mmol), 2-(trimethylsilyl)phenyl triflate (89.5mg, 0.30mmol), CsF (91.1mg, 0.60mmol), and acetonitrile (0.80mL) in a sealed tube was heated at 60C (oil bath) for 10 min, and a solution of aldehyde 2 (0.20mmol) in acetonitrile (0.40mL) was added. The mixture was stirred at 60C for 24h, cooled to room temperature, and purified by silica gel chromatography, eluting with ethyl acetate/petroleum ether (1:10 v/v), to give epoxide 3.

3541-37-5, 3541-37-5 Benzo[b]thiophene-2-carboxaldehyde 736500, abenzothiophene compound, is more and more widely used in various fields.

Reference£º
Article; Xu, Ya-Nan; Tian, Shi-Kai; Tetrahedron; vol. 75; 12; (2019); p. 1632 – 1638;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

22913-24-2, Methyl benzo[b]thiophene-2-carboxylate is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: To a solution of intermediate 2a-c (1 equiv.) in methanol was added 2N sodium hydroxide at ambient temperature. The reaction mixture was stirred for 4 h and the methanol was removed by rotary evaporation. The resultant mixture was adjusted to pH =5-6 with 1N HCl. The precipitated white solid was collected by filtration and dried to give the carboxylic acid intermediate (1a-c).4.7.1. benzo[b]thiophene-2-carboxylic acid (1a) 1H NMR (600 MHz, DMSO-d6) d 13.48 (s, 1H), 8.12 (s, 1H), 8.05(d, J = 8.1 Hz, 1H), 8.01 (d, J = 7.9 Hz, 1H), 7.53-7.49 (m, 1H), 7.48-7.44 (m, 1H)., 22913-24-2

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

Reference£º
Article; Zhao, Shizhen; Wei, Peng; Wu, Mengya; Zhang, Xiangqian; Zhao, Liyu; Jiang, Xiaolin; Hao, Chenzhou; Su, Xin; Zhao, Dongmei; Cheng, Maosheng; Bioorganic and Medicinal Chemistry; vol. 26; 12; (2018); p. 3242 – 3253;,
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.

General procedure: In 0.5 M hexane solvent, 1.25 molar equivalents of Na-TMP was reacted with 0.4 mmol of benzo[b]thiophene (arene) at 25 C. for 30 minutes, 1.5 molar equivalents of heavy water (D2O: electrophilic reagent) was then added thereto and reacted therewith at 0 C. for 1 hour. The product was evaluated through analysis by 1H-NMR, and the yield of isolated deuterated benzo[b]thiophene in which a hydrogen atom located at 2-position of benzo[b]thiophene was substituted by heavy hydrogen was calculated in the same manner as in Experiment Number 1. The isolated yield was 99%.A reaction was performed using benzo[b]thiophene as an arene and carbon dioxide (CO2) as an electrophilic reagent in the same manner as in Experiment Number 2, the product was then evaluated, and the yield of isolated benzo[b]thiophene-2-carboxylic acid in which a carboxy group (-CO2H) was added at 2-position of benzo[b]thiophene was calculated. The isolated yield was 89%., 95-15-8

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

Reference£º
Patent; KOBELCO ECO-SOLUTIONS CO.,LTD.; MURAKAMI, Yoshiaki; FUKUSHIMA, Miyuki; TAKAI, Kazuhiko; ASAKO, Sobi; (16 pag.)US2019/359571; (2019); A1;,
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

General procedure: To a solution of an aromatic aldehyde 1 (0.500 mmol, 1.0 equiv) and TMSN3 (115 mg, 1.00 mmol,2.0 equiv) in a premixed HFIP/ACN mixture (2.0 mL, 1:1) in a nitrogen-flushed two dram vial wasadded triflic acid (TfOH; 17.7 L, 0.200 mmol, 0.40 equiv) (exotherm and brisk effervescence due tonitrogen gas evolution was immediately observed). The vial was capped and the reaction mixture wasallowed to stir at rt for 20-75 min. The reaction mixture was concentrated under nitrogen. The residueobtained was suspended in CH2Cl2/hexanes mixture and loaded on a silica gel in a 5 g samplecartridge. Purification using a normal phase silica flash column on a CombiFlash purification systemafforded a corresponding aromatic nitrile 2 upon concentration of appropriate fractions.

5381-20-4 Thianaphthene-3-carboxaldehyde 227328, abenzothiophene compound, is more and more widely used in various fields.

Reference£º
Article; Motiwala, Hashim F.; Yin, Qin; Aube, Jeffrey; Molecules; vol. 21; 1; (2016);,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem

5381-25-9, 1-Benzothiophene-3-carboxylic acid is a benzothiophene compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated,5381-25-9

To a stirred solution OF 4- [ (Z)- (4-BROMOPHENYL) (ethoxyimino) methyl]-1- (4-methyl-4- piperidinyl) piperidine (50 mg, 0.12 MMOL), benzo [b] thiophene-3-carboxylic acid (22 mg, 0.13 MMOL), and Et3N (24.3 mg, 0.24 MMOL) in DMF (2 ML), HATU (61 mg, 0.16 MMOL) was added at room temperature. After 16 h the mixture was poured into ice water (10 mL), and was extracted with CH2CI2 (3X10 mL). The organic phase was dried over NA2SO4, and concentrated in vacuo. Purification by preparative TLC afforded title compound as a white solid. MS: 569 (M++1).

The synthetic route of 5381-25-9 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; SCHERING AKTIENGESELLSCHAFT; WO2004/113323; (2004); 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.1195-14-8,2-Methylbenzo[b]thiophene,as a common compound, the synthetic route is as follows.

B. 2-Methylbenzo[b]thiophene-3-sulfonyl chloride Sulfuryl chloride (9.5 mmoles, 0.76 ml) was added to a stirred solution of dimethylformamide (DMF; 11.2 mmoles, 0.87 ml) at 0 C., and the resulting feint yellow solution was stirred for 20 min at 0 C. 2-Methylbenzo[b]thiophene (5.6 mmoles, 0.83 g) was then added, the reaction mixture was diluted with 2 ml of DMF, and then heated to 85 C. After 2.5 hrs at 85 C., the brown reaction mixture was cooled to ambient temperature and added to ice (~100 ml). The aqueous phase was extracted with ethyl acetate (100 ml), and the organic phase was dried (MgSO4), filtered and concentrated to collect an orange-brown solid. Flash chromatography (4% ethyl acetate/hexanes) provided 0.89 g (64%) of 2-methylbenzo[b]thiophene-3-sulfonyl chloride as a yellow solid.

1195-14-8, The synthetic route of 1195-14-8 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Texas Biotechnology Corporation; US5594021; (1997); 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.3541-37-5,Benzo[b]thiophene-2-carboxaldehyde,as a common compound, the synthetic route is as follows.

General procedure: To a solution of benzo[b]thiophene-2-carboxaldehyde (2?mmol) in ethanol (5?mL), 4-ethylthiosemicarbazide (2?mmol) and acetic acid (0.5?mL) were added. The mixture was stirred for 10?min?at 80?C. After cooling to room temperature, the white precipitate was obtained. The white solid was collected by filtration and the crude product was further purified by recrystallization from ethanol. (E)-2-(benzo[b]thiophen-2-ylmethylene)-N-ethylhydrazine-1-carbothioamide was obtained (BS2C-ETSC). The other two compounds, (E)-2-(benzo[b]thiophen-2-ylmethylene)hydrazine-1-carbothioamide (BS2C-TSC) and (E)-2-(benzo[b]thiophen-2-ylmethylene)-N-methylhydrazine-1-carbothioamide (BS2C-MTSC) were prepared with the same procedure as BS2C-ETSC., 3541-37-5

As the paragraph descriping shows that 3541-37-5 is playing an increasingly important role.

Reference£º
Article; Qiao, Yuqian; Che, Yuanyuan; Yu, Yuming; Tang, Yakun; Liu, Lang; Zhao, Xianmei; Zhao, Jianzhang; Dyes and Pigments; vol. 156; (2018); p. 326 – 331;,
Benzothiophene – Wikipedia
Benzothiophene | C8H6S – PubChem