Tech. of preparing amino benz methyl-phenoxide by nitro methyl-phenoxide mixture catalyzing hydrogenation

A technology for nitroanisole and aminoanisole is applied in the field of preparing aminoanisole by catalytic hydrogenation of nitroanisole mixture, and can solve the problem of large discharge of waste water and waste residue, increased treatment cost and hidden danger of secondary pollution And other issues
CN1861570AInactive Publication Date: 2006-11-15CHANGZHOU JIASEN CHEM +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHANGZHOU JIASEN CHEM
Publication Date
2006-11-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

A process for preparing amino phenylmether from nitro phenylmether mixture by catalytic hydrogenating includes such steps as catalytic hydroreducing reaction between methanol, nitro phenylmether mixture and catalyst, recovering catalyst, decoloring, removing impurities, filtering to obtain liquid phase (the solution of amino phenylmether, methanol and water), separation and refining.
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Description

Technical field

[0001] The invention relates to a process for preparing aminoanisole by catalytic hydrogenation of a nitroanisole mixture, and belongs to the technical field of fine chemicals. Background technique

[0002] Aminoanisole (mainly 2-aminoanisole and 4-aminoanisole) is an important organic synthesis intermediate. At present, the preparation of 2-aminoanisole and 4-aminoanisole is usually made from 2-nitrobenzene and 4-nitrobenzene respectively, through sodium sulfide reduction or iron powder reduction. The process has the following shortcomings: high consumption, high cost, low quality, especially large discharge of waste water and waste residue, causing serious environmental pollution. If the waste water and waste residue generated are treated, this will increase the cost of treatment, and there will also be hidden dangers of secondary pollution. Contents of the invention

[0003] The object of the present invention is to provide a process for preparing amin...

Claims

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