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Method for producing acetylacetone copper

A technology of copper acetylacetonate and production method is applied in directions such as aldehyde/ketone chelate preparation, organic chemistry, etc., can solve problems such as low yield, complicated process, difficult separation, etc., and achieves reduction of production cost, process difficulty, and reduction of Effects of process steps

Inactive Publication Date: 2008-04-09
扬州市兴业助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its weak point is: (1) this production method productive rate is low, and ammonium sulfate is generated in the reactant, and separation is comparatively difficult, and product purity is low; (2) needs recrystallization before obtaining product, and its process is complicated, and production efficiency is low , the productive rate is only 80-85%; (3) adopt water as solvent, its consumption is big, post-processing is difficult, easily causes adverse influence to environment

Method used

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  • Method for producing acetylacetone copper

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Experimental program
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Effect test

Embodiment 1

[0012] Add 200Kg of ethanol to the reaction kettle as a solvent, add 100Kg of copper oxide powder under stirring, let it disperse evenly in the ethanol, then add 0.1% of the mass of copper oxide as a protonic acid catalyst, and then dropwise add 200Kg of acetylacetone, the system Spontaneously raise the temperature, keep the reaction at 40°C for 4 hours, cool, remove the solvent, and dry to obtain the product with a yield of 92%.

[0013] Its reaction formula is:

[0014]

Embodiment 2

[0016] Add 400Kg of ethanol as a solvent to a one-ton reactor, add 200Kg of copper oxide powder under stirring, let it disperse evenly in the ethanol, then add 2% of the mass of copper oxide as a protonic acid catalyst, and then dropwise add 400Kg of acetyl Acetone, the temperature of the system rises spontaneously, and the reaction is kept at 90°C for 2 hours, cooled, desolventized, and dried to obtain the product with a yield of 90%.

Embodiment 3

[0018] Add 300Kg of ethanol as a solvent to a one-ton reaction kettle, add 150Kg of copper oxide powder under stirring, let it disperse evenly in the ethanol, then add 1% of the mass of copper oxide as a protonic acid catalyst, and then dropwise add 300Kg of acetyl Acetone, the temperature of the system rises spontaneously, and the reaction is kept at 60°C for 3 hours, cooled, desolventized, and dried to obtain the product with a yield of 95%.

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Abstract

The invention discloses a method of producing acetylacetone in the technical field of chemical industry. The invention has the key points of the technical proposal that: ethanol 200 to 400 quality units or benzene 150 to 300 quality units are added to the reaction pot as the solvent; by stirring, cupric oxide powder 100 to 200 quality units are added to the reaction pot so as to evenly disperse the cupric oxide powder in the ethanol or benzene; after that, protonic acid catalyst with 0.1 to 2 percent cupric oxide is added to the reaction pot, and acetylacetone 200 to 500 quality units are added; the reaction pot is automatically heated up, and after reaction in constant temperature of 40 to 90 DEG C for 2 to 4 hours, the reaction pot is cooled and desolvated as well as dried, the product is obtained. Providing product with high purity and yield up to 90 to 95 percent, the invention has the advantages of few technique steps, simple technique, small acetylacetone consumption, and low production cost; moreover, the solvent of the ethanol or benzene can be used circularly or recycled, thereby bringing about no influence on environment.

Description

technical field [0001] The present invention relates to a production method of a compound. Background technique [0002] In the prior art, there is a chemical substance whose Chinese name is: copper acetylacetonate; English name: Cupric acetylacetonate, referred to as CuAA; CAS NO.: 13395-16-9; molecular formula: C 10 h 14 CuO 4 ; Molecular weight: 261.76; Physical and chemical properties: This product is blue needle crystal or powder. Soluble in chloroform, soluble in benzene and carbon tetrachloride. [0003] The existing copper acetylacetonate production method is as follows: add 300 mass units of water (each mass unit can be any value greater than 0, the same below) in the reactor, heat up to 40-80 ° C, and 135 mass units of copper sulfate Add it to the reaction kettle, stir to dissolve it, then add 150 mass units of acetylacetone (the molar ratio of copper sulfate to acetylacetone is 1:3), stir well for 1 hour, then add ammonia water dropwise until the solution pH=7...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C49/92C07C49/14C07C45/77
Inventor 姜业朝
Owner 扬州市兴业助剂有限公司
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