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Preparation method of heptadecafluorooctyl iodoalkane

A technology of fluorooctyl iodide and fluorooctyl bromide, which is applied in the field of chemical synthesis, can solve the problems restricting the industrial application of electrolysis and telomerization, and achieve the effects of convenient industrial production, simple synthesis route and mild process conditions

Inactive Publication Date: 2013-03-27
中国人民解放军防化学院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manufacturing process disadvantages other than IF 5 In addition to the strong corrosiveness and high requirements on the purity of fluorine, there are also very special electrolytic equipment and conditions for the production of elemental fluorine.
The above reasons seriously restrict the industrial application of electrolysis and telomerization

Method used

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  • Preparation method of heptadecafluorooctyl iodoalkane
  • Preparation method of heptadecafluorooctyl iodoalkane
  • Preparation method of heptadecafluorooctyl iodoalkane

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with embodiment.

[0038] According to this embodiment image 3 The synthesis route shown is to prepare heptadecafluorooctyl iodane, using commercially available potassium perfluorooctane sulfonate (potassium heptadecafluorooctane sulfonate) as a raw material, and the other reagents described below are all analytically pure.

[0039] Step 1: Preparation of heptadecafluorooctanesulfonyl chloride (II) from potassium perfluorooctanesulfonate (I)

[0040] Add (I) and the sulfonylating reagent into the reaction flask, stir and heat up to the reaction temperature, and maintain the temperature until the reaction is completed. Distill under reduced pressure, intercept 108°C-114°C / 100mmHg fraction to obtain the crude product, the crude product is washed with sodium bicarbonate aqueous solution to neutral or near neutral, stand to separate layers, take the lower liquid, dry, and crystallize to obtain Heptadeca...

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Abstract

The invention discloses a preparation method of heptadecafluorooctyl iodoalkane, and belongs to the technical field of chemical synthesis. The preparation method comprises the following steps of: implementing a sulfonylation reaction on heptadecafluorooctyl potassium sulphonate at reacting temperature, to obtain heptadecafluorooctyl sulfonyl chloride after the reaction; implementing a bromination reaction on the heptadecafluorooctyl sulfonyl chloride at reacting temperature, to obtain heptadecafluorooctyl bromoalkane after the reaction; and implementing an iodination reaction on the heptadecafluorooctyl bromoalkane, to obtain heptadecafluorooctyl iodoalkane after the reaction. In comparison with the prior art, the preparation method of the heptadecafluorooctyl iodoalkane has the advantages of being simple in synthesis route, easily available in raw materials, moderate in processing conditions, lower in cost, and convenient for industrial production.

Description

technical field [0001] The invention relates to a preparation method of heptadecafluorooctyl iodane, which belongs to the technical field of chemical synthesis. Background technique [0002] With the development of fluorine chemistry, the application of fluorine compounds in the fields of medicine and pesticides is increasing. [0003] Perfluoroalkyl iodide F(CF 2 )nI(RFI) is an important raw material of organic fluorine chemistry and fluorine chemical industry, and a key intermediate of fluorine-containing finishing agents, fluorine-containing surfactants and fluorine-containing fine chemicals. At the same time, perfluoroalkyl iodides are widely used in medicine, aerospace, optics, microelectronics and other fields. [0004] The chemical activity of perfluoroalkyl chloride, perfluoroalkyl bromide and perfluoroalkyl iodide is very different, and it is difficult to obtain perfluoroalkyl iodide by using a general synthesis method similar to perfluoroalkyl chloride and perflu...

Claims

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Application Information

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IPC IPC(8): C07C19/16C07C17/20
Inventor 王相承符爱清常耕
Owner 中国人民解放军防化学院
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