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Pentachlorocyclopropane preparation method

A technology of pentachlorocyclopropane and trichloropropene, which is applied in the field of preparation of pentachlorocyclopropane, and can solve problems such as high tension of three-membered rings

Active Publication Date: 2013-03-27
SINOCHEM LANTIAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, from the perspective of molecular structure, the ring tension of its three-membered ring is relatively large. When it reacts with a polar reagent to open the ring, it has the same properties as many chloroalkanes. However, there is no report about pentachlorocyclopropane. Related preparation reports

Method used

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  • Pentachlorocyclopropane preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In a 1000ml three-neck flask, a reflux condenser is installed in the middle, chlorine gas is passed through one side, and a thermometer is installed on the other side, and 1000g of 1,1,3-trichloropropene, anhydrous FeCl 3 0.3 grams, chlorine gas flow rate 200ml / min, reaction time 12hr, the sample was treated with nitrogen gas for 20min before the reaction, without photocatalysis, the reaction results are shown in Table 1:

[0019] Table 1 Effect of nitrogen flow rate on the reaction

[0020]

Embodiment 2

[0022] In a 1000ml three-neck flask, a reflux condenser is installed in the middle, chlorine gas is passed through one side, and a thermometer is installed on the other side, 1000g of 1,1,3-trichloropropene (water content 23ppm) is added, and anhydrous FeCl 3 , Anhydrous FeBr 3 , Anhydrous FeCl 2 0.3 grams each, chlorine gas flow rate 200ml / min, 200ml / min nitrogen gas treatment sample for 20min, reaction temperature 20±0.5℃, no photocatalysis, reaction time 12hr, reaction results are shown in Table 2:

[0023] Table 2 Effect of catalyst on reaction result

[0024]

Embodiment 3

[0026] In a 1000ml three-neck flask, a reflux condenser is installed in the middle, chlorine gas is passed through one side, and a thermometer is installed on the other side, and 1000g of 1,1,3-trichloropropene, anhydrous FeCl 3 0.3 grams, chlorine gas flow rate 200ml / min, 200ml / min nitrogen gas treatment sample sample for 20min, reaction temperature 20±0.5℃, no photocatalysis, reaction time 12hr, reaction results are shown in Table 3:

[0027] Table 3 Effect of moisture on the reaction

[0028]

[0029]

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PUM

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Abstract

The invention provides a pentachlorocyclopropane preparation method. Pentachlorocyclopropane is generated through chlorinating 3,3,3-trichloropropylene which is a raw material by chlorine at 0-100DEG C. The pentachlorocyclopropane preparation method has the advantages of novel synthetic route, high product yield, simple operation, easy industrialized amplification and the like. The synthesized pentachlorocyclopropane can be used for synthesizing other fluorine-containing compounds.

Description

technical field [0001] The invention relates to a preparation method of halogenated cycloalkane, in particular to a preparation method of pentachlorocyclopropane. Background technique [0002] Pentachlorocyclopropane is a by-product of the propane chlorination process, which is mainly used as a solvent. However, from the perspective of molecular structure, the ring tension of its three-membered ring is relatively large. When it reacts with a polar reagent to open the ring, it has the same properties as many chloroalkanes. However, there is no report about pentachlorocyclopropane. Related preparation reports. Contents of the invention [0003] The purpose of the present invention is to provide a preparation method of pentachlorocyclopropane, which has the advantages of novel synthetic route, high product yield, simple operation, and easy industrial scale-up. [0004] For achieving the purpose of the invention, the technical scheme adopted by the present invention is: [...

Claims

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Application Information

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IPC IPC(8): C07C23/04C07C17/04
Inventor 杨刚许磊杨会娥樊建平王锋姜恩曾昌平赵新堂张文庆万宝锋李媛李忠陈蜀康
Owner SINOCHEM LANTIAN
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