Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 117519-13-8, name is 6-Chloro-2-(trifluoromethyl)pyridin-3-amine. This compound has unique chemical properties. The synthetic route is as follows. Formula: C6H4ClF3N2
To a stirred solution of 6-chloro-2-(trifluoromethyl)pyridin-3-amine (351 mg, 1 .79mmol) in DCM (3ml_) and pyridine (0.58ml_, 7.14mmol) was added 2-methylpropanoyl chloride (0.374ml_, 3.57mmol). The reaction mixture was allowed to stir at room temperature overnight. The reaction mixture was concentrated and purified by flash chromatography on silica using a gradient from 5-100% EtOAc in isohexane as eluent to give the desired compound (234mg, 49%) as a white solid. 1 H NMR (400 MHz, CDCI ) delta 9.08 (s, 1 H), 8.89 (d, 1 H), 8.62 (s, 1 H), 8.38 (s, 1 H), 7.96 (d, 1 H), 7.68 (br s, 1 H), 2.69-2.59 (m, 1 H), 1 .32 (d, 6H)
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Reference:
Patent; SYNGENTA PARTICIPATIONS AG; CARTER, Neil, Brian; BRIGGS, Emma; KITSIOU, Christiana; LING, Kenneth; MORRIS, James, Alan; TATE, Joseph, Andrew; WAILES, Jeffrey, Steven; WILLIAMS, John; (94 pag.)WO2017/162524; (2017); A1;,
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