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Preparation method of 3-fluoro-1, 3-propanesultone

A technology of propane sultone and fluorinating agent, applied in organic chemistry and other directions, can solve the problems of large pollution, long steps, low yield, etc., and achieve the effect of improving battery voltage

Inactive Publication Date: 2015-11-11
SHIJIAZHUANG SAN TAI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to carry out chlorination first, and the pollution is large, the steps are long, and the yield is not high

Method used

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  • Preparation method of 3-fluoro-1, 3-propanesultone
  • Preparation method of 3-fluoro-1, 3-propanesultone

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Using dichloromethane as the reaction solvent, add 1mol of 1,3-propane sultone and 1mol of bast reagent to 200ml of dichloromethane, control the reaction temperature at 10°C, and the reaction time for 3h to obtain 3-fluoro -1,3-propane sultone, the calculated yield is 91.0%, the purity is 99.8%, and the product moisture is 16PPM.

Embodiment 2

[0020] Using dichloromethane as the reaction solvent, add 1mol of 1,3-propane sultone and 1.1mol of bast reagent to 400ml of dichloromethane, control the reaction temperature at 20°C, and the reaction time for 7h to obtain 3- Fluoro-1,3-propane sultone, the calculated yield is 94.4%, the purity is 99.9%, and the product moisture is 18PPM.

Embodiment 3

[0022] Using dichloromethane as the reaction solvent, add 1mol of 1,3-propane sultone and 1.3mol of bast reagent to 800ml of dichloromethane, control the reaction temperature to 30°C, and the reaction time to 10h to obtain 3- Fluoro-1,3-propane sultone, the calculated yield is 92.42%, the purity is 99.9%, and the product moisture is 16PPM.

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Abstract

The invention discloses a preparation method of 3-fluoro-1, 3-propanesultone, belonging to the technical field of compound preparation. 1, 3-propanesultone is used as a raw material in the method. The method comprises the steps of placing 1, 3-propanesultone and a fluorinating agent into a reaction solvent, and directly carrying out fluorination to obtain the 3-fluoro-1, 3-propanesultone, wherein dichloromethane is used as the reaction solvent. The 3-fluoro-1, 3-propanesultone prepared by using the preparation method not only can be used as an intermediate, a double-ion surfactant and a sulfonating agent, but also can be used as an additive of a lithium ion secondary battery electrolyte, can be particularly used for increasing the voltage of a battery due to the existence of the F element and can be widely applied to the field of high voltages of lithium ion batteries.

Description

technical field [0001] The invention belongs to the technical field of compound preparation, and relates to the preparation of 1,3-propane sultone derivatives, specifically the preparation method of 3-fluoro-1,3-propane sultone. Background technique [0002] With the development of my country's electronic information industry, the demand for chemical power is increasing, and its performance requirements are getting higher and higher. Lithium-ion batteries have the advantages of small size, good safety performance, light weight, high specific energy, high voltage, long life, no pollution, etc., which are incomparable to other chemical power sources. The main power supply for portable electronic devices such as camcorders and digital cameras. In recent years, the basic research and application development of lithium-ion batteries have become one of the hot spots. A lithium battery includes a positive electrode, a negative electrode, an electrolyte, and a separator. However, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D327/04
CPCC07D327/04
Inventor 刘鹏田丽霞梅银平
Owner SHIJIAZHUANG SAN TAI CHEM CO LTD
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