Synthesis process of high-quality sodium trifluoromethanesulfinate

A technology of sodium trifluoromethanesulfinate and synthesis process, applied in the direction of organic chemistry and the like, can solve the problems of unenvironmental preparation process, complicated preparation process and high production cost, and achieves reduction of production cost, simple operation of synthesis process and high yield. high rate effect

Inactive Publication Date: 2021-03-09
江苏优普生物化学科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Sodium trifluoromethanesulfinate, another name sodium trifluoromethanesulfinate, is an important raw material for producing trifluoromethanesulfinyl chloride, but the preparation process of existing sodium trifluoromethanesulfinate is complicated, and the preparation process Not environmentally friendly,
[0003] High energy consumption leads to high production cost of enterprises and low purity, therefore, it is necessary to improve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The present invention provides the following technical solutions: a synthesis process of high-quality sodium trifluoromethylsulfinate, comprising the following steps:

[0020] A, sodium dithionite is mixed with trifluoromethyl bromide and sodium hydroxide and then added to the reaction kettle for heating and reaction to obtain sodium trifluoromethanesulfinate and sodium bromide mixed solution;

[0021] B, the mixed solution in the step A is sent into the layered kettle, and the layers are left to stand to obtain the supernatant and the lower filtrate;

[0022] C, extract the supernatant, add the lower filtrate in the stirred tank, and add the extractant in the stirred tank to carry out the stirring extraction reaction;

[0023] D, the reaction product in the processing step C is sent to the desolventizer for desolventization to obtain a semi-finished product;

[0024] E. Finally, dry the semi-finished product through a high-speed centrifugal spray dryer to obtain sodiu...

Embodiment 2

[0031] A high-quality sodium trifluoromethyl sulfinate synthesis process, comprising the following steps:

[0032] A, sodium dithionite is mixed with trifluoromethyl bromide and sodium hydroxide and then added to the reaction kettle for heating and reaction to obtain sodium trifluoromethanesulfinate and sodium bromide mixed solution;

[0033] B, the mixed solution in the step A is sent into the layered kettle, and the layers are left to stand to obtain the supernatant and the lower filtrate;

[0034] C, extract the supernatant, add the lower filtrate in the stirred tank, and add the extractant in the stirred tank to carry out the stirring extraction reaction;

[0035] D, the reaction product in the processing step C is sent to the desolventizer for desolventization to obtain a semi-finished product;

[0036] E. Finally, dry the semi-finished product through a high-speed centrifugal spray dryer to obtain sodium trifluoromethylsulfinate.

[0037] In this embodiment, the heatin...

Embodiment 3

[0043] A high-quality sodium trifluoromethyl sulfinate synthesis process, comprising the following steps:

[0044] A, sodium dithionite is mixed with trifluoromethyl bromide and sodium hydroxide and then added to the reaction kettle for heating and reaction to obtain sodium trifluoromethanesulfinate and sodium bromide mixed solution;

[0045] B, the mixed solution in the step A is sent into the layered kettle, and the layers are left to stand to obtain the supernatant and the lower filtrate;

[0046] C, extract the supernatant, add the lower filtrate in the stirred tank, and add the extractant in the stirred tank to carry out the stirring extraction reaction;

[0047] D, the reaction product in the processing step C is sent to the desolventizer for desolventization to obtain a semi-finished product;

[0048] E. Finally, dry the semi-finished product through a high-speed centrifugal spray dryer to obtain sodium trifluoromethylsulfinate.

[0049] In this embodiment, the heatin...

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Abstract

The invention discloses a synthesis process of high-quality sodium trifluoromethanesulfinate. The synthesis process comprises the following steps: A, mixing sodium hydrosulfite with trifluoromethyl bromide and sodium hydroxide, adding the mixture into a reaction kettle, and heating to react to obtain a mixed solution of sodium trifluoromethanesulfinate and sodium bromide; B, feeding the mixed solution obtained in the step A into a layering kettle, and standing for layering to obtain a supernatant and a lower filtrate; C, extracting supernatant, adding the lower filtrate into a stirring kettle,and adding an extracting agent into the stirring kettle for extraction reaction under stirring; D, feeding the reaction product in the processing step C into a desolventizing kettle for desolventizing to obtain a semi-finished product; and E, finally, drying the semi-finished product through a high-speed centrifugal spray dryer to obtain sodium trifluoromethanesulfinate. The synthesis process issimple in operation, pollution-free in synthesis process, high in purity of sodium trifluoromethanesulfinate, high in yield, capable of effectively reducing production cost, capable of saving energy and reducing consumption and good in economic benefit.

Description

technical field [0001] The invention relates to the technical field of synthesis of sodium trifluoromethyl sulfinate, in particular to a high-quality synthesis process of sodium trifluoromethyl sulfinate. Background technique [0002] Sodium trifluoromethanesulfinate, another name sodium trifluoromethanesulfinate, is an important raw material for producing trifluoromethanesulfinyl chloride, but the preparation process of existing sodium trifluoromethanesulfinate is complicated, and the preparation process Not environmentally friendly, [0003] High energy consumption leads to high production cost of enterprises and low purity. Therefore, it is necessary to improve. Contents of the invention [0004] The object of the present invention is to provide a kind of high-quality sodium trifluoromethyl sulfinate synthesis technique, to solve the problem proposed in the above-mentioned background technology. [0005] In order to achieve the above object, the present invention prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C313/04
CPCC07C313/04
Inventor 邱历杨建明顾佳林江飞陈佳楠
Owner 江苏优普生物化学科技股份有限公司
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