17318-08-0Relevant articles and documents
Preparation method of 3,5-dichloro-4-fluorobromobenzene compound
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Paragraph 0047-0052, (2020/12/14)
The invention relates to a preparation method of 3,5-dichloro-4-fluorobromobenzene. According to the preparation method, 2-fluoro-3-chloronitrobenzene is used as a starting raw material and subjectedto bromination, reduction and diazochlorination to synthesize 3,5-dichloro-4-fluorobromobenzene. The whole synthesis route of the method has the advantages of accessible raw materials, mild reaction conditions, environment friendliness, low equipment requirements and high product purity and yield.
Preparation method of 3, 5-dichloro-4-fluorobromobenzene compound
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, (2020/12/29)
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.