With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.360576-01-8,Methyl 6-bromobenzo[b]thiophene-2-carboxylate,as a common compound, the synthetic route is as follows.
Compound TDI01116-2 (550 mg, 2.04 mmol) and bis(pinacolato)diboron (621 mg, 2.44 mmol) were dissolved in dioxane (20 mL), potassium acetate (600 mg, 6.12 mmol) and Pd(dppf)Cl2 (140 mg, 0.20 mmol) were added, purge with argon was performed for 3 times, and the reaction was placed in an oil bath at 80C overnight. Thin layer chromatography (petroleum ether : ethyl acetate= 10:1) indicated the reaction was complete. The reaction solution was cooled to room temperature, and concentrated under reduced pressure. The residue was separated and purified by column chromatography (petroleum ether : ethyl acetate= 20:1) to afford compound TDI01116-3 (600 mg, white solid, yield: 92.3%). 1H NMR (400 MHz, CDCl3) delta 8.35 (s, 1H), 8.06 (s, 1H), 7.87 (d, J = 8.0 Hz, 1H), 7.80 (d, J = 8.0 Hz, 1H), 3.95 (s, 3H), 1.38 (s, 12H).
360576-01-8, 360576-01-8 Methyl 6-bromobenzo[b]thiophene-2-carboxylate 22474078, abenzothiophene compound, is more and more widely used in various fields.
Reference£º
Patent; Beijing Tide Pharmaceutical Co., Ltd.; Zhao, Yanping; Wang, Hongjun; Li, Gong; Jiang, Yuanyuan; Li, Xiang; Zhou, Liying; Liu, Yanan; (106 pag.)EP3421464; (2019); A1;,
Benzothiophene – Wikipedia
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