Adding a certain compound to certain chemical reactions, such as: 98198-48-2, 2-Amino-5-bromo-4-methylpyridine, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound, Recommanded Product: 2-Amino-5-bromo-4-methylpyridine, blongs to pyridine-derivatives compound. Recommanded Product: 2-Amino-5-bromo-4-methylpyridine
b) Ethyl (E)-3-(6-amino-4-methylpyridin-3-yl)acrylate To a stirred solution of 2-amino-5-bromo-4-methylpyridine (10 g, 54 mmole) in propionitrile (50 mL) was added ethyl acrylate (17 mL, 157 mmole), DIEA (19 mL, 106 mmole), palladium(II) acetate (0.61 g, 2.7 mmole) and tri-o-tolylphosphine (1.64 g, 5.4 mmole). The reaction was purged with argon and heated at reflux for 6 hr, then was cooled to RT and concentrated to dryness under vacuum. The resulting residue was taken up in ethyl acetate and filtered through a pad of silica gel. The filtrate was concentrated and the remaining residue was triturated with 1:1 Et2O/petroleum ether (50 mL), filtered, and dried under vacuum to give the title compound (6.50 g, 59%) as a pale yellow solid: 1H NMR (400 MHz, DMSO-d6) delta 8.31 (s, 1 H), 7.66 (d, J = 16.0 Hz, 1 H), 6.40 (br s, 2 H), 6.32 (d, J. = 16.0 Hz, 1 H), 6.28 (s, 1 H), 4.15 (q, 2 H), 2.24 (s, 3 H), 1.24 (t, 3 H).
At the same time, in my other blogs, there are other synthetic methods of this type of compound,98198-48-2, 2-Amino-5-bromo-4-methylpyridine, and friends who are interested can also refer to it.
Reference:
Patent; Affinium Pharmaceuticals, Inc.; EP1226138; (2004); B1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem