1196152-38-1, name is 2-Bromo-5-(trifluoromethyl)pyrazine, belongs to pyrazines compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Application In Synthesis of 2-Bromo-5-(trifluoromethyl)pyrazine
To a suspension of Example 3B (0.08 g, 0.249 mmol) in N,N-dimethylformamide (0.5 mL, 6.46 mmol) were added N,N-diisopropylethylamine (0.174 mL, 0.996 mmol) and 2- bromo-5-(trifluoromethyl)-pyrazine (0.068 g, 0.299 mmol). The reaction mixture was stirred overnight at 90 C, and then it was concentrate under reduced pressure at 50 C. The residue was purified by flash column chromatography on silica gel (12 g) eluted with heptane and ethyl acetate (0 to 100%) to give 40 mg of the title compound (37.3% yield) as a white solid. 1H NMR (400 MHz, DMSO-d6) delta ppm 8.78 (s, 1H), 8.59 (s, 1H), 8.44 (s, 1H), 7.99 (s, 1H), 7.55 (d, J = 8.8 Hz, 1H), 7.27 (d, J = 2.8 Hz, 1H), 6.99 (dd, J = 9.0, 2.9 Hz, 1H), 4.51 (s, 2H), 2.37 (s, 6H); 19F NMR (376 MHz, DMSO-d6) delta ppm -64.83, -114.06; MS (ESI+) m/z 447 (M+H)+.
The synthetic route of 1196152-38-1 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; CALICO LIFE SCIENCES; ABBVIE, INC.; SIDRAUSKI, Carmela; PLIUSCHEV, Marina; FROST, Jennifer, M.; BLACK, Lawrence, A.; XU, Xiangdong; SWEIS, Ramzi, Farah; SHI, Lei; ZHANG, Qinwei, I.; TONG, Yunsong; HUTCHINS, Charles, W.; CHUNG, Seungwon; DART, Michael, J.; (661 pag.)WO2017/193063; (2017); A1;,
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