Preparation method of N,N-dimethylglycine

A technology of dimethylglycine and dimethylglycine salt, which is applied in the chemical industry, can solve problems such as application limitations, and achieve the effects of high production efficiency, reduced production costs, and simple post-processing
CN103387518AActive Publication Date: 2013-11-13CHONGQING UNISPLENDOUR CHEM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNISPLENDOUR CHEM
Publication Date
2013-11-13

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Abstract

The invention relates to a preparation method of N,N-dimethylglycine and belongs to the field of chemical engineering. The preparation method comprises the following steps of: preparing N,N-dimethyl amino acetonitrile by taking hydroxyacetonitrile and dimethylamine as raw materials, obtaining an N,N-dimethylglycine crude product by alkalizing the reaction liquid with an inorganic base and neutralizing the reaction liquid with an organic acid on the basis of N,N-dimethyl amino acetonitrile reaction liquid, and finally separating and purifying the N,N-dimethylglycine crude product to obtain the high-quality N,N-dimethylglycine product. The preparation method has the advantages that the raw materials are environmentally-friendly and easily available, reaction conditions are mild, the environmental pollution is little, the after-treatment is simple and easy, the production efficiency is high, and the preparation method is suitable for industrial popularization and application.
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Description

technical field

[0001] The invention aims at the field of chemical industry and relates to a method for preparing N,N-dimethylglycine, in particular to a method for preparing N,N-dimethylglycine by using N,N-dimethylaminoacetonitrile. Background technique

[0002] N, N-dimethylglycine (Dimethylglycine, N, N-dimethylglycine, referred to as DMG, vitamin B16), the appearance of white crystals, soluble in water and ethanol. As a drug, it can be used to treat middle-aged and elderly depression, stimulate the human immune response, reduce the damage of pollution pollutants to the body, and reduce the cholesterol content in the body. In addition, it can be used as an antioxidant in the food industry, as a pharmaceutical intermediate in the pharmaceutical industry, and to synthesize a variety of biochemical drugs.

[0003] Patent US4968839 reports the synthesis process of N,N-dimethylglycine, that is, the reaction of dimethylamine with formaldehyde, sodium cyanide and sodium bisulf...

Claims

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