A method for recycling of avibactam intermediate production waste liquid

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By grafting ionic liquid onto activated carbon and carrying sodium triacetoxyborohydride, combined with the homogeneous reaction of m-chloroperoxybenzoic acid, the problem of low waste liquid recovery efficiency in the production of avibactam intermediates was solved, achieving efficient and environmentally friendly waste liquid recycling.

CN119638614BActive Publication Date: 2026-02-06DEZHOU HONGHAI PHARMACEUTICAL TECHNOLOGY CO LTD +1

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Patent Information

Application Number: CN202510173699.X
Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner
Filing Date: 2025-02-18
Publication Date: 2026-02-06
Estimated Expiration: 2045-02-18

Application Information

Patent Timeline

18 Feb 2025

Application

CN202510173699.X

06 Feb 2026

Publication

CN119638614B

IPC: C07D211/60; C07C51/41; C07C55/07; B01J31/02

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Application Domain

Organic-compounds/hydrides/coordination-complexes catalysts Carboxylic acid salt preparation

Technology Topics

Benzoic acid Organosolv

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AI Technical Summary

Technical Problem

Existing methods for recovering waste liquid from the production of avibactam intermediates are inefficient, cumbersome, costly, and cause significant environmental pollution.

Method used

Ionic liquids were prepared using N-n-butylimidazolium and 3-chloropropyltriethoxysilane, and sodium triacetoxyborohydride was grafted onto activated carbon. The (2S,5R)-benzylaminopiperidine-2-carboxylate oxalate was prepared by homogeneous reaction of m-chloroperoxybenzoic acid with avibactam intermediate waste liquid in an organic solvent.

Benefits of technology

It improved reaction efficiency, reduced environmental pollution, increased raw material utilization, and achieved a high recovery rate.

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Abstract

The present application relates to a kind of recycling method of avibactam intermediate production waste liquid, belong to pharmaceutical chemical technology field;The present application will be in the 5-benzyloxyamine piperidin-2S-formic acid ethyl ester oxalate in avibactam intermediate production waste liquid by desalination into free state, under the condition of ethyl acetate as solvent, using the dilute solution of m-chloroperbenzoic acid drop, homogeneous reaction in organic solvent, effectively improve the utilization of raw material, with the advantage of less by-product, and have higher recovery rate than prior art, in addition, the present application also prepares a kind of activated carbon loaded sodium triacetoxyborohydride, can play the role of catalytic sodium triacetoxyborohydride reduction amination reaction, improve the utilization of sodium triacetoxyborohydride, and prevent sodium triacetoxyborohydride from contacting with water.

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