Title:
METHOD FOR PREPARING PERFLUOROETHYL ISOPROPYL KETONE
Document Type and Number:
WIPO Patent Application WO/2019/006993
Kind Code:
A1
Abstract:
The present invention relates to a method for preparing perfluoroethyl isopropyl ketone, comprising: using perfluoro-4-methyl-2-amylene or a mixture of perfluoro-4-methyl-2-amylene and perfluoro-2-methyl-2-amylene as a raw material; firstly, converting perfluoro-4-methyl-2-amylene into perfluoro-2-methyl-2-amylene by means of an isomerization reaction; next, epoxidizing perfluoro-2-methyl-2-amylene as perfluoro-2-methyl-2,3-pentylene oxide; and then, enabling catalytic rearrangement of perfluoro-2-methyl-2,3-pentylene oxide to obtain perfluoroethyl isopropyl ketone. The present invention has the following advantages: the catalytic isomerization reaction in the present invention can be performed in a solvent-free condition so that the problems that a great number of toxic solvents are used in existing processes, recycling is difficult to be carried out and the like are avoided; tertiary amine nitrogen oxide or N,N-dialkyl hydroxylamine is used as an epoxidation reagent, such that perfluoro-2-methyl-2-amylene is quantitatively converted into perfluoro-2-methyl-2,3-pentylene oxide under a mild condition, and thus the problems that a great number of sodium hypochlorite solutions are used in existing processes so that devices are seriously corroded, a great number of salt solutions generated in post-treatment are difficult to be recycled, the use conditions are harsh and the like are avoided.
Inventors:
CAI XINGWEI (CN)
SHA MIN (CN)
PAN RENMING (CN)
JIANG BIAO (CN)
ZHAO YUYUAN (CN)
SHA MIN (CN)
PAN RENMING (CN)
JIANG BIAO (CN)
ZHAO YUYUAN (CN)
Application Number:
PCT/CN2017/116479
Publication Date:
January 10, 2019
Filing Date:
December 15, 2017
Export Citation:
Assignee:
UNIV JIANGSU SCIENCE & TECH (CN)
MARINE EQUIPMENT AND TECHNOLOGY INSTITUTE JIANGSU UNIV OF SCIENCE AND TECHNOLOGY (CN)
MARINE EQUIPMENT AND TECHNOLOGY INSTITUTE JIANGSU UNIV OF SCIENCE AND TECHNOLOGY (CN)
International Classes:
C07C49/167; C07C45/58
Foreign References:
| CN107235834A | 2017-10-10 | |||
| CN102992986A | 2013-03-27 | |||
| CN103483139A | 2014-01-01 | |||
| CN105198719A | 2015-12-30 | |||
| CN106542984A | 2017-03-29 |
Attorney, Agent or Firm:
BEIJING YIGE INTELLECTUAL PROPERTY AGENT LTD (GENERAL PARTNERSHIP) (CN)
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