Method of preparing pentafluoroethyl isopropyl ketone

A technology of perfluoroethyl isopropyl ketone and hexafluoropropylene, which is applied in the field of preparation of perfluoroethyl isopropyl ketone, can solve the problems of low selectivity, difficult manipulation, and many by-products, and achieve a high degree of automation , easy operation and low equipment requirements
CN106316809AActive Publication Date: 2017-01-11航天康达(北京)科技发展有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
航天康达(北京)科技发展有限公司
Publication Date
2017-01-11

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Abstract

The invention relates to the technical field of organic synthesis, in particular to a method of preparing pentafluoroethyl isopropyl ketone. The method includes the steps that hexafluoropropylene oxide and hexafluoropropylene are used as raw materials and react at the temperature of 65-80 DEG C in the presence of a crown ether phase transfer catalyst and fluorine-containing salt to obtain pentafluoroethyl isopropyl ketone. The yield of the product prepared through the method is 88-91%, and the conversion rate of the raw material hexafluoropropylene is up to 100%. The method has the advantages of being easy to operate, low in requirement for equipment, low in cost, high in automation degree and high in equipment use ratio and can meet the requirement for industrial production application.
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Description

technical field

[0001] The invention relates to the technical field of organic synthesis, in particular to a method for preparing perfluoroethyl isopropyl ketone. Background technique

[0002] Perfluoroethyl isopropyl ketone is referred to as perfluorohexanone (the structure is as follows), and the full chemical name is 1,1,1,2,2,4,5,5,5-nonafluoro-4-trifluoromethyl- Pent-3-one, English name (1,1,1,2,2,4,5,5,5-nonofluoro-4-trifluoromethyl-pentane-3-one), chemical formula CF 3 CF 2 COCF(CF 3 ) 2 , ASHRAE chemical code FK-5-1-12. Perfluorohexanone was synthesized by scientists from the former Soviet Union as a fine chemical intermediate as early as the 1970s, but it has not been produced and applied on a large scale. Until 2001, 3M company launched a trade name NOVEC 1230 TM The high-efficiency fluoroalkane fire extinguishing agent is used to replace the environmentally unfriendly chlorofluorocarbons (perchlorofluorocarbons) and halons (bromofluoroalkanes), and perfluoro...

Claims

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