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2-BroMo-6-fluoro-3-nitrobenzoic acid synthesis

2synthesis methods
-

Yield: 83%

Reaction Conditions:

with sulfuric acid;nitric acid in water at 20; for 2 h;

Steps:

8 2- bromo-6-fluoro-3-nitrobenzoic acid
Under ice bath fuming nitric acid (1.0mL, 11.4mmoL) was added dropwise 2-bromo-6-fluoro-benzoic acid (2.5g, 11.4mmoL) and concentrated sulfuric acid (7.5mL) of the mixed solution.After the dropwise addition, this was stirred for 2 hours at room temperature into the system.Poured into ice water (40.0mL), a large number of solid, filtered and the solid washed with water and dried under high vacuum to give a white solid 2.5g, 83% yield.It was used directly in the next step.

References:

Shanghai Institute Of Materia Medica, Chinese Academy Of Sciences,;Duan, WenHu;Wan, huixin;Xia, GuangXin;Mei, deCheng;Lin, Yipeng;Liu, Xuejun;Shen, JingKang CN103804358, 2016, B Location in patent:Paragraph 0135

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