Electric Literature of 116632-24-7, 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. 116632-24-7, name is 2-Amino-4,6-dichloropyridine. A new synthetic method of this compound is introduced below.
Reference Example 7 4-chloro-6-phenoxypyridin-2-amine (0379) 630 mg (6.69 mmol) of phenol and 1.00 g (6.13 mmol) of 4,6-dichloropyridin-2-amine were added at room temperature to a mixed solution of 250 mg (6.56 mmol) of 63 wt. % sodium hydride (dispersion in mineral oil) and 15 ml dimethyl sulfoxide. After completion of the addition, said reaction mixture liquid was stirred for 14 hours at 100 C. After completion of the stirring, the reaction was stopped by addition of 30 ml of water, and said reaction liquid was extracted with diethyl ether (2×30 ml). The organic layer obtained was dried with anhydrous sodium sulfate, and the solvent distilled off under reduced pressure. The residue obtained was purified by silica gel chromatography (n-hexane:ethyl acetate=9:1 to 1:9), and 70 mg of the desired compound were obtained as a brown solid. (0380) 1H-NMR (CDCl3, Me4Si, 300 MHz): delta 7.44-7.35 (m, 2H), 7.21-7.18 (m, 1H), 7.13-7.09 (m, 2H), 6.19 (s, 1H), 6.08 (s, 1H), 4.52 (brs, 2H).
At the same time, in my other blogs, there are other synthetic methods of this type of compound,116632-24-7, 2-Amino-4,6-dichloropyridine, and friends who are interested can also refer to it.
Reference:
Patent; SYNGENTA PARTICIPATIONS AG; NAKAYA, Yoshihiko; MASUZAWA, Yoshihide; FURUHASHI, Takamasa; MIYAKADO, Yuuki; HOTTA, Hiroyasu; INABA, Masamitsu; (76 pag.)US2016/221998; (2016); A1;,
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