Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 84539-34-4, name is 4-Amino-3,5-dibromopyridine. A new synthetic method of this compound is introduced below., Computed Properties of C5H4Br2N2
Into a 500-mL round-bottom flask, was placed 3,5-dibromopyridin-4-amine (5 g, 19.9 mmol, 1.0 equiv) in dioxane (150 mL) and water(l 5 mL). 4,4,5,5-tetramethyl-2-(prop-l-en-2- yl)-l,3,2-dioxaborolane (10.1 g, 60.0 mmol, 3.0 equiv), CS2CO3 (19.6 g, 60.0 mmol, 3.0 equiv) and Pd(dppf)Ch (1.5 g, 2.00 mmol, 0.03 equiv) were added to the solution. The resulting solution was stirred for 15 h at 90C in an oil bath. The resulting mixture was concentrated under vacuum. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (1 :3). This resulted in 3.0 g (87.0%) of 3,5-bis(prop-l ~en~2-yl)pyridin-4-amine as light yellow oil.
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Reference:
Patent; NOVARTIS INFLAMMASOME RESEARCH, INC.; FRANCH, Luigi; GHOSH, Shomir; GLICK, Gary; KATZ, Jason; OPIPARI, Anthony William, Jr.; ROUSH, William R.; SEIDEL, Hans Martin; SHEN, Dong-Ming; VENKATRAMAN, Shankar; WINKLER, David Guenther; (479 pag.)WO2020/10143; (2020); A1;,
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