Anti-aging agent AW preparation method

Abstract

The invention belongs to the technical field of fine chemical industry, and relates to an anti-aging agent AW preparation method, wherein the anti-aging agent AW is prepared under the action of a catalyst by using p-phenetidine and acetone as raw materials, the catalyst is a titanate-based catalyst, the reaction temperature is 100-200 DEG C, the reaction time is 3-10 h, a molar ratio of p-phenetidine to acetone is 1:1-6, a molar ratio of titanate to p-phenetidine is 0.0005-0.05:1, the single-pass conversion rate can achieve more than 97% based on p-phenetidine, and the AW content of the product can reach 99.5%. According to the present invention, the anti-aging agent AW is prepared by using the titanate-based catalyst, such that the advantages of simple operation, low catalyst consumption,low cost, high content of effective body and the like can be achieved.

Description

technical field

[0001] The invention belongs to the technical field of fine chemicals, relates to a preparation method of anti-aging agent AW, and is a green and environment-friendly preparation process. Background technique

[0002] Antiaging agent AW, also known as ethoxyquinoline, chemically named 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, is one of the excellent and economical feed antioxidants , suitable for premix, fishmeal and fat-added products, can prevent vitamin A, D, E, etc. and fat oxygen from deteriorating, natural pigments from oxidative discoloration, and has certain anti-mildew and fresh-keeping effects, and can also be used as Food antioxidant, fruit preservative, rubber anti-aging agent.

[0003] The synthesis of anti-aging agent AW generally adopts the reaction of p-aminophenethyl ether and acetone, and the product is obtained under the action of different catalysts. Romanian patent RO65302 provides a method for producing ethoxyquinoline by reacting...