Preparing method of mannich base

A technology for Mannich bases and derivatives is applied in the field of preparation of Mannich bases, which can solve the problems of increased operational risk, toxic solvents and high cost, and achieves the effects of low cost, easy operation and mild conditions.
CN101717320AInactive Publication Date: 2010-06-02ANYANG NORMAL UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
ANYANG NORMAL UNIV
Publication Date
2010-06-02
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a preparing method of mannich base. The method takes three components of aldehyde, amine, ketone or naphthol as a raw material, takes water as a solvent, and takes liquid superacid as a catalyst, the raw material, the solvent and the catalyst are reacted at normal pressure and room temperature, and then recrystallized and dried to obtain the product of mannich base. The method has the advantages of mild condition, convenient operation, environment protection, high efficiency, good selectivity, high productivity and easy realization.
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Description

1. Technical field:

[0001] The invention relates to a method for preparing a Mannich base, in particular to a three-component one-pot method for preparing a Mannich base by using aldehydes, amines, ketones or naphthols as raw materials, and belongs to the field of chemistry. 2. Background technology:

[0002] Mannich base (English: Mannich base) and its derivatives are an important class of nitrogen-containing compounds, widely used in medicines, pesticides, dyes, coatings, explosives, corrosion inhibitors, oil additives and other fields, or many organic Important intermediates in synthesis and natural product synthesis. The widespread existence and application of compounds containing nitrogen atoms reflect the importance of Mannich bases.

[0003] There are many ways to prepare Mannich base and its derivatives, and there are two main routes: one is to make imine from aldehyde and amine, and then react with ketone or silanol ether prepared from ketone to synthesize two comp...

Claims

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