- Preparation method of 3, 5-dichloro-4-fluorobromobenzene compound
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The invention relates to a preparation method of 3, 5-dichloro-4-fluorobromobenzene. The method takes 2, 6-dichlorofluorobenzene as a raw material, the raw material is simple and easy to obtain, the cost is low, the method is simple in process, mild in condition and environment-friendly, the separation and purification of an intermediate product 2, 4-dichloro-3-fluoronitrobenzene through a crystallization method are much more efficient than those of the traditional distillation means, and the process safety is high. The loss is lower.
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Paragraph 0047-0051
(2020/12/29)
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