A method for catalytic bromination of an organic cyclic compound, bromination products and their use in latent fingerprint development

CN122444567APending Publication Date: 2026-07-24SICHUAN POLICE COLLEGE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN POLICE COLLEGE
Filing Date
2026-04-28
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing technologies for the bromination of organic cyclic compounds suffer from poor chemical selectivity, high toxicity, high cost, numerous safety hazards, and difficulty in industrialization, especially in terms of insufficient bromination yield for bioactive organic cyclic compounds.

Method used

A DMSO/BFBSA catalytic bromination system was used to catalytically brominate organic cyclic compounds at room temperature. Dimethyl sulfoxide (DMSO) was used as the catalyst and N-bromo-N-fluorobenzenesulfonamide (BFBSA) was used as the brominating agent. Efficient and selective monobromination was achieved by controlling the reaction conditions.

Benefits of technology

This method achieves efficient bromination of bioactive organic cyclic compounds that are difficult to brominate with traditional brominating reagents, resulting in improved yield. Furthermore, the prepared brominated products exhibit excellent development performance in latent fingerprinting, demonstrating advantages such as low cost, low toxicity, ease of industrialization, and high sensitivity.

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Abstract

The application discloses a catalytic bromination method of an organic cyclic compound, a bromination product and application of the bromination product in latent fingerprint development, and belongs to the technical field of organic chemical synthesis. The application takes an organic cyclic compound (including a bioactive molecule containing an aromatic heterocyclic skeleton) as a substrate, adopts a dimethyl sulfoxide / N-bromo-N-fluorobenzenesulfonamide (DMSO / BFBSA) catalytic bromination system, prepares a series of brominated organic cyclic compounds, and successfully applies part of the brominated products to latent fingerprint development. The catalytic system has the characteristics of simple operation, low cost, mild reaction condition, wide substrate applicability and strong functional group compatibility. In addition, compared with a traditional chemical development method, the prepared brominated product has the advantages of low toxicity, simple operation (without subsequent fumigation), high sensitivity, low cost and easy preparation, and has a good effect on latent fingerprint development, and therefore has a good application prospect in the field of criminal investigation.
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