2-chloro-1, 3-dimethyl imidazolinlium chloride synthesis technology
A technology for chloroimidazoline and synthesis process, which is applied in the field of synthesis technology of chlorinated 1,3-dimethyl-2-chloroimidazoline, can solve the problems of high cost, low production efficiency, low purity of finished products, etc. The effect of improving one-way conversion rate 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 present synthesis technique of chlorinated 1,3-dimethyl-2-chloroimidazoline, the technological process is not easy to implement, and the finished product of chlorinated 1,3-dimethyl-2-chloroimidazoline has low purity, and the reaction The residue cannot be recycled, the production process is complicated, the production efficiency is low and the cost is high, and it is not suitable for large-scale production
Method used
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Experimental program
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Effect test
Embodiment
[0011] The synthesis technique of the chlorinated 1,3-dimethyl-2-chloroimidazoline of the present embodiment comprises the following steps:
[0012] (1) Dissolve solid phosgene in an inert solvent, and keep the temperature of the reaction mixture at 10°C;
[0013] (2) Slowly add the product obtained in step (1) dropwise to a solution of an inert solvent of 1,3-dimethyl-2-imidazolidinone;
[0014] (3) Stir the reaction solution obtained in step (2) at room temperature, heat up, cool, filter, and wash to obtain the final product.
[0015] The synthesis process of chlorinated 1,3-dimethyl-2-chloroimidazoline does not require cumbersome post-reaction treatment, greatly improves product performance, and is environmentally friendly and pollution-free. The process is easy to implement, and the production cost is low. High, and better realize the industrial production of products.
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The invention discloses a 2-chloro-1, 3-dimethyl imidazolinlium chloride synthesis technology. The technology comprises that triphosgene replacing phosgene or liquid phosgene is slowly dissolved in an inert solvent, the solution is slowly and dropwisely added into a solution of 1, 3-dimethyl-2-imidazolone and an inert solvent, and the mixed solution undergoes a reaction at a temperature of 45-65 DEG C for 6-8h to produce 2-chloro-1, 3-dimethyl imidazolinlium chloride with a pure white color. The inert solvent is selected from benzene, toluene, dichloromethane, chloroform, carbon tetrachloride and chlorobenzene and preferably, is dichloromethane or carbon tetrachloride. The synthesis technology is safe, has no pollution, can be operated simply, has a high yield, realizes good purity and can satisfy chemical and medical requirements.
Description
technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a synthesis process of chlorinated 1,3-dimethyl-2-chloroimidazoline. Background technique [0002] The synthesis process of chlorinated 1,3-dimethyl-2-chloroimidazoline at least includes washing, stirring, filtering, washing and other processes. In the present synthesis technique of chlorinated 1,3-dimethyl-2-chloroimidazoline, the technological process is not easy to implement, and the finished product of chlorinated 1,3-dimethyl-2-chloroimidazoline has low purity, and the reaction The residues cannot be recycled, the production 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...
Claims
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IPC IPC(8): C07D233/28
Inventor 李金婷
Owner QINGDAO SHOUGUAN ENTERPRISE MANAGEMENT CONSULTATION CO LTD