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Preparation method of 2-iodo-4-methoxyaniline

A technology of methoxyaniline and iodobenzoic acid, applied in the chemical field, can solve problems such as low production efficiency, complicated preparation process, etc., and achieve the effects of improving production efficiency, reducing production cost, and preventing the health of personnel

Inactive Publication Date: 2018-12-07
NANJING CARBONDE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to provide a preparation method of 2-iodo-4 methoxyaniline to solve the problems of complex preparation process and low production efficiency in the prior art

Method used

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  • Preparation method of 2-iodo-4-methoxyaniline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as figure 1 A kind of preparation method of shown 2-iodo-4 methoxyaniline, comprises the steps:

[0020] (1) Material mixing: firstly adjust the temperature of the reactor equipped with a stirring device, a temperature regulating device, and a dropping funnel to 35°C within 10-30 minutes, and keep it warm for 1 minute. - Add 4-iodobenzoic acid into the reaction kettle, and carry out uniform one-way stirring operation through the stirring device. After completing the addition of 2-iodo-4-iodobenzoic acid and stirring for 10 minutes, the aniline is then passed through the dropping funnel mechanism. Add to the reaction kettle at a uniform speed within 10 minutes and perform one-way uniform stirring and mixing operation under the drive of the stirring device, and after the addition of aniline is completed, keep stirring the mixed material in the reaction kettle for 3 hours under the condition of keeping the temperature and stirring operation constant reserve;

[0021...

Embodiment 2

[0029] Such as figure 1 A preparation method of 2-iodo-4 methoxyaniline, comprising the steps of:

[0030] (1) Mixing of materials: first, adjust the temperature of the reaction kettle equipped with a stirring device, a temperature regulating device, and a dropping funnel mechanism to 60°C within 30 minutes, and keep it warm for 5 minutes. First, 2-iodine-4 -Iodobenzoic acid is added in the reaction kettle, and carries out uniform speed one-way stirring operation by stirring device, after completing 2-iodo-4-iodobenzoic acid addition and stirring for 3 minutes, then aniline is passed through the dropping funnel mechanism at 60 Add to the reaction kettle at a uniform speed within 1 minute and perform one-way uniform stirring and mixing operation under the drive of the stirring device, and after the addition of aniline is completed, keep stirring the mixed material in the reaction kettle for 8 hours under the condition of keeping the temperature and stirring operation constant. ...

Embodiment 3

[0041] Such as figure 1 Shown, a kind of preparation method of 2-iodo-4 methoxyaniline comprises the steps:

[0042](1) Mixing of materials: first, adjust the temperature of the reaction kettle equipped with a stirring device, a temperature regulating device, and a dropping funnel mechanism to 45°C within 20 minutes, and keep it warm for 3.5 minutes. -Iodobenzoic acid is added in the reaction kettle, and is carried out uniform speed unidirectional stirring operation by stirring device, after completing 2-iodo-4-iodobenzoic acid addition and stirring for 2 minutes, then aniline is passed through the dropping funnel mechanism at 45 Add it into the reactor at a uniform speed within 1 minute and carry out the one-way uniform stirring and mixing operation driven by the stirring device, and after the addition of aniline is completed, keep stirring the mixed material in the reactor for 6.5 hours under the condition of keeping the temperature and stirring operation constant. use;

...

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Abstract

The invention provides a preparation method of 2-iodo-4-methoxyaniline. The preparation method comprises two steps: material mixing and synthesis. The synthesis technology is simple and standard; theproduction technology and production process can be mastered easily; the operation standards of 2-iodo-4-methoxyaniline production are improved effectively, at the same time, the production efficiencyand product quality are improved effectively, and the production cost is reduced. Furthermore, during the production process, the production environment is well sealed, the harmful production raw materials will not be leaked, thus the environment will not be polluted, the health of workers is protected, at the same time, the product will not be oxidized by the oxygen in the exterior environment,the product quality is guaranteed, the production raw materials and finished products will not be contaminated by the dusts and liquid droplets in the external environment, and the product quality isensured.

Description

technical field [0001] The invention relates to a preparation method of 2-iodo-4methoxyaniline, which belongs to the technical field of chemical industry. Background technique [0002] 2-iodo-4 methoxyaniline is widely used in the current medical field and printing and dyeing field, and the market demand is huge, but currently in the process of producing and preparing 2-iodo-4 methoxyaniline products, all The production process used is often used for reference to the production process of similar products for the production of 2-iodo-4 methoxyaniline. Although it can meet the needs of 2-iodo-4 methoxyaniline production to a certain extent, on the one hand it has caused 2-iodo-4 methoxyaniline products have the defects of low production efficiency, high production cost and poor product quality stability. At the same time, it is also very easy to cause serious pollution to the surrounding environment and directly damage the skin and respiratory tract of production personnel. ...

Claims

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Application Information

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IPC IPC(8): C07C217/84C07C213/02
CPCC07C213/02C07C217/84Y02P20/141
Inventor 杨祝红朱永笑吴友琴
Owner NANJING CARBONDE TECH
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