Method for chlorinating benzaldehyde oximes

EP4522586A1Pending Publication Date: 2025-03-19BAYER AG
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Patent Information

Application Number
EP2023726352
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-05-13
Filing Date
2023-05-11
Publication Date
2025-03-19

AI Technical Summary

Technical Problem

Current methods for producing chlorobenzaldehyde oximes are inefficient and unsustainable due to the use of hazardous solvents like DMF and chlorinated alkane compounds, leading to low yields, safety risks, and environmental concerns, as well as decomposition issues with high-energy compounds.

Method used

A process using chlorine gas and amide bases in solvents like tetrahydrofuran or acetonitrile, avoiding DMF and chlorinated alkane compounds, which allows for high-yield production of chlorobenzaldehyde oximes as solutions suitable for industrial scale without the need for solvent changes, reducing waste and safety hazards.

Benefits of technology

This process increases yield and sustainability by minimizing exothermic reactions and waste production, enabling the production of chlorobenzaldehyde oximes on an industrial scale while maintaining safety and environmental considerations.

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Abstract

The invention relates to a novel method for producing chlorobenzaldehyde oximes of the general formula (I).
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