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2-dimethylaminoethyl chloride hydrochloride synthesis technology

A technology of dimethylaminoethyl chloride and synthesis process, which is applied in the preparation of amino compounds, the preparation of organic compounds, organic chemistry and other directions, can solve the problems such as being unsuitable for large-scale production, complex production procedures, low production efficiency, etc. Single-pass conversion rate and product yield, overcoming the effect of many processes and improving work efficiency

Inactive Publication Date: 2016-06-22
QINGDAO SHOUGUAN ENTERPRISE MANAGEMENT CONSULTATION CO LTD
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Problems solved by technology

In the current 2-dimethylaminochloroethane hydrochloride synthesis process method, the technical process is not easy to implement, the resulting 2-dimethylaminochloroethane hydrochloride product has low purity, and the reaction residue cannot be recycled. The process is complicated, the production efficiency is low and the cost is high, so it is not suitable for mass production

Method used

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Embodiment

[0011] The synthesis technique of the 2-dimethylamino chloroethane hydrochloride of the present embodiment comprises the following steps:

[0012] (1) Using dimethylethanolamine as a raw material, the ice-water bath condition controls the temperature at 12°C to directly carry out chlorination reaction with thionyl chloride;

[0013] (2) Add absolute ethanol to reflux for 2 hours;

[0014] (3) Filter and dry to obtain the finished product.

[0015] The synthesis process of 2-dimethylaminochloroethane hydrochloride does not require cumbersome post-reaction treatment, greatly improves product performance, and is environmentally friendly and pollution-free. The process is easy to implement, low production cost, high synthesis yield, and better The industrialized production of products has been realized.

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Abstract

The invention discloses a 2-dimethylaminoethyl chloride hydrochloride synthesis technology. The technology comprises that dimethylethanolamine as a raw material and thionyl chloride directly undergo a chlorination reaction in an ice water bath under control of a temperature in a range of 8-18 DEG C, anhydrous ethanol is added into the reaction product, the mixture undergoes a reflux reaction for 2h, and the reaction product is filtered and dried so that a finished product is obtained. The 2-dimethylaminoethyl chloride hydrochloride synthesis technology has the advantages that 1, the product is free of recrystallization and has a high yield, good quality and a low cost, 2, reaction conditions are mild and are convenient for operation, 3, product purity is high and inorganic salt content is less than 0.5%, and 4, three wastes are reduced, hydrogen chloride and sulfur dioxide gas in the reaction are absorbed and the mother liquor subjected to pumping filtration is free of after treatment and is subjected to waste liquid delegation treatment so that environmental protection is promoted.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a synthesis process of 2-dimethylaminochloroethane hydrochloride. Background technique [0002] The synthesis process of 2-dimethylaminochloroethane hydrochloride at least includes processes such as drying, ice-water bath, and filtration reaction. In the current 2-dimethylaminochloroethane hydrochloride synthesis process method, the technical process is not easy to implement, the resulting 2-dimethylaminochloroethane hydrochloride product has low purity, and the reaction residue cannot be recycled. The process is complicated, the production efficiency is low and the cost is high, so it is not suitable for large-scale production. Contents of the invention [0003] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a synthesis process of 2-dimethylaminochloroeth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/15C07C209/74
Inventor 李金婷
Owner QINGDAO SHOUGUAN ENTERPRISE MANAGEMENT CONSULTATION CO LTD
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