Electric Literature of 697300-73-5 , The common heterocyclic compound, 697300-73-5, name is 3-Bromo-5-iodopyridin-2-amine, molecular formula is C5H4BrIN2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.
3-Bromo-5-iodopyridin-2-amine (7.50 g), 3,4-dimethoxyphenylboronic acid (4.79 g), tetrakis(triphenylphosphine)palladium (1.45 g) and potassium carbonate (10.4 g) were suspended in dioxane (100 ml) and water (10 ml), and the suspension was heated at 80 C. for 9.5 hours. After leaving to cool, a saturated aqueous ammonium chloride solution was added, and the organic layer was extracted with ethyl acetate and dried over sodium sulfate. The solvent was distilled off under reduced pressure, and the residue was purified by silica gel column chromatography [ethyl acetate] to give 7.36 g of the title compound as a solid. MS (ESI) m/z: 309, 311 (M+H)+.
The synthetic route of 697300-73-5 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Ohki, Hitoshi; Ota, Masahiro; Takeuchi, Kosuke; Watanabe, Hideaki; Yamaguchi, Akitake; Shibata, Yoshihiro; Tominaga, Yuichi; Jimbo, Takeshi; Kobayashi, Keijiro; Kobayashi, Katsuhiro; Fukatsu, Daisuke; US2013/281428; (2013); A1;,
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