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[Chemical Knowledge]：Production process and preparation method of benzylidene acetone

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Benzylidene acetone is a kind of organic compound, which is widely used in medicine, perfume, dye, synthetic resin and other fields. This article will introduce the production process and preparation method of benzyl acetone.

1. production process

benzyl acetone production process mainly includes: ethyl acetate, acetic anhydride and acetophenone method.

1. ethyl acetate method

raw materials for benzoic acid and ethyl acetate. First, benzoic acid and acetic anhydride are added into a reaction kettle, and then a hydrolysis catalyst is added, and the reaction temperature is heated with steam. After the reaction, the reaction is cooled with water and subjected to dehydration, distillation and other steps to finally obtain benzylidene acetone.

2. Acylacetic anhydride method

raw materials for benzaldehyde and acetone. First, the two raw materials are put into a reaction kettle, an acylacetic anhydride catalyst is added, and heated to the reaction temperature. After the reaction, the reaction is distilled, refined and other treatments are carried out, and finally benzylidene acetone is obtained.

3. acetophenone

raw materials for benzaldehyde and acetone. First, acetophenone and benzaldehyde are put into a reaction kettle, a catalyst is added, and heated to the reaction temperature. After the reaction, the reaction is completed, and the treatment such as distillation and purification is carried out, and finally benzylidene acetone is obtained.

2. Preparation Methods

There are two main methods for the preparation of benzyl acetone: chemical synthesis and biological preparation.

1. Chemical synthesis method

Chemical synthesis method is mainly the use of organic synthesis reaction, through the synthesis reaction of benzoic acid, benzaldehyde and acetone and other raw materials to react to generate benzylidene acetone. As mentioned above, the production process of chemical synthesis mainly includes ethyl acetate method, acylacetic anhydride method and acetophenone method.

2. biological preparation method

biological preparation method is mainly the use of biological technology, such as microbiology and genetic engineering technology, through microbial fermentation or recombinant strains and other means to produce benzyl acetone. This method has the advantages of low production cost and no pollution, and is one of the preparation methods that have attracted more and more attention.

3. conclusion

benzylideneacetone is an important organic compound, which is widely used in medicine, perfume, dye, synthetic resin and other fields. This paper introduces the production process and preparation methods of benzylidene acetone, including chemical synthesis and biological preparation. No matter which method is used, safety protection and environmental protection must be paid attention to in the production process to ensure that the produced benzylidene acetone has both quality assurance and environmental friendliness.