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Method for synthesizing ethoxyquinoline

An ethoxyquinoline, fully mixed technology, applied in chemical recovery, organic chemistry, etc., can solve the problems of long reaction time, low conversion rate, environmental pollution, etc., and achieve fast reaction rate, high conversion rate, and low raw material cost Effect

Active Publication Date: 2015-10-07
TAIXING RUITAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ethoxyquinoline is recognized as the most effective, economical and practical feed antioxidant in the world. It has the characteristics of high antioxidant efficiency, safety and non-toxicity, convenient use, and no accumulation in animals. It is suitable for full-price feed , Add fat products and fish meal, it can prevent feed oxidation and corruption, maintain animal protein feed energy, prevent vitamin A, vitamin E, lutein from being destroyed during feed mixing and storage, and prevent fat-soluble vitamins and pigments from being oxidized loss, inhibit self-heating, improve the quality of fishmeal, and at the same time increase the weight of the animals raised, improve the conversion rate of the feed, promote the full action of the animal on the pigment, prevent vitamin A, E deficiency, prolong the shelf life of the feed, and have a higher The market price of ethoxyquinoline is to adopt p-aminophenethyl ether, acetone as raw material, add catalyst and solvent synthesis, the method of existing synthetic ethoxyquinoline, the deficiency that exists is that conversion rate is low, below 90% , the existing synthetic method solvent is usually benzene, toluene, xylene, and catalyzer is usually p-aminobenzenesulfonic acid, hydrochloric acid, zinc chloride, in the process of these solvents and catalyzer synthesis ethoxyquinoline, the reaction time is long, not only High cost and cause environmental pollution

Method used

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  • Method for synthesizing ethoxyquinoline
  • Method for synthesizing ethoxyquinoline
  • Method for synthesizing ethoxyquinoline

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The concrete steps of the method for the described synthetic ethoxyquinoline are:

[0036] 1) Synthesis:

[0037] Add 100kg of p-aminophenethyl ether, 20kg of solvent acetic anhydride, and 3kg of catalyst cuprous chloride into the reaction tank at one time, mix thoroughly, heat up, and carry out the reaction through a rotameter under normal pressure at a reaction temperature of 120°C. The dripping of acetone, the weight of acetone is 200kg, and the reaction time is 10h, measure and generate the content of ethoxyquinoline, when the content of ethoxyquinoline is more than 90%, be cooled to 75 ℃, the part water that reaction generates and Unreacted acetone enters the acetone recovery device to reclaim acetone after being condensed;

[0038] 2) Filter:

[0039] Catalyst and synthesis liquid are separated by filtration;

[0040] 3) Washing:

[0041] The lower layer liquid is continuously washed with water under normal pressure, and then the p-aminophenethyl et...

Embodiment 2

[0045] The concrete steps of the method for the described synthetic ethoxyquinoline are:

[0046] 1) Synthesis:

[0047] Add 100kg of p-aminophenethyl ether, 30kg of solvent acetic anhydride, and 5kg of catalyst cuprous chloride into the reaction tank at one time, mix thoroughly, heat up, and carry out the reaction through a rotameter under normal pressure at a reaction temperature of 130°C. The dripping of acetone, the weight of acetone is 210kg, and the reaction time is 12h, measure and generate the content of ethoxyquinoline, when the content of ethoxyquinoline is more than 90%, be cooled to 75 ℃, the part water that reaction generates and Unreacted acetone enters the acetone recovery device to reclaim acetone after being condensed;

[0048] 2) Filter:

[0049] Catalyst and synthesis liquid are separated by filtration;

[0050] 3) Washing:

[0051] The lower layer liquid is continuously washed with water under normal pressure, and then the p-aminophenethyl et...

Embodiment 3

[0055] The concrete steps of the method for the described synthetic ethoxyquinoline are:

[0056] 1) Synthesis:

[0057] Add 100kg of p-aminophenethyl ether, 40kg of solvent acetic anhydride, and 8kg of catalyst cuprous chloride into the reaction tank at one time, mix well, heat up, and carry out the reaction through a rotameter under normal pressure at a reaction temperature of 140°C. The dripping of acetone, the weight of acetone is 220kg, and the reaction time is 14h, measure and generate the content of ethoxyquinoline, when the content of ethoxyquinoline is more than 90%, be cooled to 75 ℃, the part water that reaction generates and Unreacted acetone enters the acetone recovery device to reclaim acetone after being condensed;

[0058] 2) Filter:

[0059] Catalyst and synthesis liquid are separated by filtration;

[0060] 3) Washing:

[0061]The lower layer liquid is continuously washed with water under normal pressure, and then the p-aminophenethyl ether and the...

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Abstract

The invention relates to a method for synthesizing ethoxyquinoline, belonging to the fields of feed and food. The method comprises the following steps: 1) synthesis; 2) filtration; 3) washing; and 4) distillation. The acetic anhydride used as the solvent can enhance the reaction conversion rate; and the acetic anhydride can also be used as a water-carrying agent. The synthesis reaction is reversible reaction. The acetic anhydride used as the water-carrying agent can carry water generated by reaction away along with the volatilization of the acetic anhydride in the heating reaction process, thereby enhancing the reaction conversion rate. Cuprous chloride used as a catalyst exists in the reaction process in the form of solid, and can be separated and recycled without extraction after the reaction finishes. Under the interactions of the acetic anhydride solvent and cuprous chloride catalyst, the synthesis reaction method has the advantages of high reaction rate, higher conversion rate, low consumption of the solvent and catalyst, low raw material cost and no pollution, and the synthesized ethoxyquinoline can satisfy the feed-grade requirements.

Description

technical field [0001] The invention relates to a method for synthesizing ethoxyquinoline, which belongs to the field of feed and food. Background technique [0002] Ethoxyquinoline is recognized as the most effective, economical and practical feed antioxidant in the world. It has the characteristics of high antioxidant efficiency, safety and non-toxicity, convenient use, and no accumulation in animals. It is suitable for full-price feed , Add fat products and fish meal, it can prevent feed oxidation and corruption, maintain animal protein feed energy, prevent vitamin A, vitamin E, lutein from being destroyed during feed mixing and storage, and prevent fat-soluble vitamins and pigments from being oxidized loss, inhibit self-heating, improve the quality of fishmeal, and at the same time increase the weight of the animals raised, improve the conversion rate of the feed, promote the full action of the animal on the pigment, prevent vitamin A, E deficiency, prolong the shelf lif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D215/20
CPCY02P20/584C07D215/20
Inventor 丁龙军黄珍宏任云华孙汝友王春民
Owner TAIXING RUITAI CHEM