Preparation method of 2-bromofluorenone

A technology of bromofluorenone and fluorenone, which is applied in the field of preparation of 2-bromofluorenone, can solve problems such as environmental pollution, high toxicity, and difficulty in removal, so as to improve economic environmental protection, high active bromine content, and improve product purity Effect
CN110357768AInactive Publication Date: 2019-10-22郑州圣壹新材料科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
郑州圣壹新材料科技有限公司
Publication Date
2019-10-22
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention belongs to the technical field of fine chemical industry, and discloses a preparation method of 2-bromofluorenone, the preparation method comprises the following steps: (1) mixing 9-fluorenone, a catalyst and water, heating to 40-60 DEG C, and adding dibromohydantoin in batches for reaction, wherein the weight ratio of 9-fluorenone to dibromohydantoin is 1: (1.5-2); (2) cooling to room temperature after the reaction, centrifuging, removing bromine and washing to obtain a 2-bromofluorenone crude product; (3) mixing the 2-bromofluorenone crude product with a crystallization solvent, heating to 65-75 DEG C, fully dissolving, cooling to room temperature, centrifuging, spraying and removing impurities to obtain the 2-bromofluorenone. The preparation method is economical, safe, environment-friendly and efficient, and is suitable for industrial production.
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Description

technical field

[0001] The invention relates to the technical field of fine chemicals, in particular to a preparation method of 2-bromofluorenone. Background technique

[0002] The description of the background technology of the present invention belongs to the relevant technology related to the present invention, and is only used to illustrate and facilitate the understanding of the content of the present invention. prior art on the filing date.

[0003] In recent years, fluorenone and its derivatives have become an important class of functional compounds, 2-bromofluorenone is one of the important ones, used to prepare functional polymer materials, medicine, pesticides, photosensitive dyes, especially in organic electronics The field of luminescent materials has broad application prospects.

[0004] At present, there are mainly two types of preparation methods of 2-bromofluorenone reported at home and abroad, namely bromination method and oxidation method. The brominatio...

Claims

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