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. 1052714-46-1, name is 6-Bromo-5-fluoropicolinic acid. This compound has unique chemical properties. The synthetic route is as follows. Quality Control of 6-Bromo-5-fluoropicolinic acid
Synthesis of methyl 6-bromo-5-fluoropicolinate To a solution of 6-bromo-5-fluoropicolinic acid (1.0 equiv.) in methanol (0.2 M) was added H2SO4 (4.2 equiv.) and the reaction was stirred at room temperature for two hours. Upon completion of the reaction as monitored by LC/MS, the reaction was diluted with ethyl acetate and quenched slowly with saturated aqueous NaHCO3. The reaction was poured into a separatory funnel and extracted with ethyl acetate. The organic phase was dried with magnesium sulfate, filtered, and concentrated in vacuo to provide methyl 6-bromo-5-fluoropicolinate as a white solid (>99%). LC/MS=233.9/235.9 (M+H), Rt=0.69 min.
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Reference:
Patent; BURGER, Matthew T.; HAN, Wooseok; LAN, Jiong; NISHIGUCHI, Gisele; US2010/56576; (2010); A1;,
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