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. 955372-86-8, name is 3-Bromo-5-fluoroisonicotinic acid. This compound has unique chemical properties. The synthetic route is as follows. Recommanded Product: 3-Bromo-5-fluoroisonicotinic acid
TMSCHN2 (180 mL, 360 mmol, 2 equiv) was added into a solution of 3-bromo-5- fluoroisonicotinic acid (40 g, 182 mmol, 1 equiv), THF (240 mL), and MeOH (80 mL) dropwise with stirring at 0 C under nitrogen. The resulting solution was stirred for 3 h at room temperature. The resulting mixture was concentrated under vacuum. The residue was purified by a silica gel column eluting with ethyl acetate/petroleum ether (1/9) to afford the title compound (35 g, 83%) as yellow oil.
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Reference:
Patent; F. HOFFMANN-LA ROCHE AG; GENENTECH, INC.; PARAZA PHARMA, INC.; BEAUMIER, Francis; DERY, Martin; LAROUCHE-GAUTHIER, Robin; CHEN, Huifen; SHORE, Daniel; VILLEMURE, Elisia; VOLGRAF, Matthew; HU, Baihua; LU, Aijun; CRIDLAND, Andrew; WARD, Stuart; (212 pag.)WO2018/96159; (2018); A1;,
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