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.
12184] A mixture of 500 mg of methyl 6-bromobenzo[b] thiophene-2-carboxylate, 494 mg of 4-(trifluoromethoxy) phenylboronic acid, 407 mg of lithium chloride, 352 mg of sodium carbonate, 107 mg of tetrakis(triphenylphosphine) palladium (0), 20 ml of 1 ,4-dioxane, and 10 ml of water was stirred for 3.5 hours a: 1000 C. Afier being cooled to room temperature, the reaction mixture was concentrated under reduced pressure. Chloroform was added to the residues, and insoluble matter was separated by filtration. Afier water was added to the filtrate, extraction was performed using chloroform. 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 column chromatography, thereby obtaining 509mg of methyl 6-(4-trifluoromethoxyphenyl)benzo[b]thiophene-2-car- boxylate (hereinafier, described as a ?compound 45 of the present invention?)12185] Compound 45 of the Present Invention 12186] ?H-NMR (CDC13) oe: 8.09 (s, 1H), 8.03 (s, 1H),7.96-7.94 (n, 1H), 7.68-7.66 (m, 2H), 7.62-7.60 (m, 1H),7.34-7.32 (m, 2H), 3.97 (s, 3H)
360576-01-8, The synthetic route of 360576-01-8 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;,
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