Method for preparing 2-amino-4, 6-dimethoxypyrimidine

A technology of dimethoxypyrimidine and dimethyl cyanomalonimide, which is applied in organic chemistry and other fields, can solve problems such as high cost of malononitrile, easy decomposition and polymerization, and unstable temperature, and achieve less waste , simple operation, easy solvent effect
CN103159684AActive Publication Date: 2013-06-19HUBEI HUIDA HIGH TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUBEI HUIDA HIGH TECH CO LTD
Publication Date
2013-06-19

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Abstract

The present invention relates to a method for preparing 2-amino-4, 6-dimethoxypyrimidine (ADMP). According to the method, malononitrile is uses as a raw material, special solvents are adopted, and in the action of a specific catalyst, after reactions of imidization, cyanamide substitution, aromatic cyclization, etc., 2-amino-4, 6-dimethoxypyrimidine of high purity is synthesized in a high yield. The method has no harsh conditions in all the steps, is simple in operation, little in the amounts of waste water, waste gas and industrial residues, and environmentally friendly, thereby having significant social and economic benefits, and being suitable for industrial production.
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Description

technical field

[0001] The present invention relates to the preparation method and production process of 2-amino-4,6-dimethoxypyrimidine (ADMP), an important intermediate of medicine and pesticide. The method of the present invention uses malononitrile as raw material, adopts special solvent, and Under the action of a catalyst, 2-amino-4,6-dimethoxypyrimidine is synthesized through reactions such as imidization, cyanamide substitution, and aromatic ring closure. The purity of the product is greater than 99%, and the highest total yield reaches more than 77%. The preparation method of the invention has the characteristics of cheap and easy-to-obtain raw materials, no harsh conditions for reaction, simple operation, less three wastes, environmental friendliness and the like, and is suitable for industrial production. Background technique

[0002] Pyrimidine compounds are a class of important biologically active substances, which are widely used in insecticides, herbicides, fun...

Claims

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