Daikin Industries, Ltd.

Toshiya Mantani

Noriyuki Shinoki

Kazuyoshi Ichihara

Akinari Sugiyama

Masahiro Kondo

Tatsuya Ohtsuka

Takuya Arase

Takashi Yoshimura

Kenji Ishii

Masahiro Kondou

Shinsuke Ohshita

Yuichi Hashikawa

The present invention provides a method for producing 3-chloro-pentafluoropropene at a high yield through one reaction step of chlorinating perfluoroallyl fluorosulfate. The present invention directs to a method for producing 3 -chloro-pentafluoropropene, including the step of bringing perfluoroallyl fluorosulfate and an onium chloride compound into contact with each other to produce the 3-chloro-pentafluoropropene.

Method for producing 3-chloro-pentafluoropropene

The present invention provides a method for producing a fluorine-containing halide, comprising reacting a fluorine-containing sulfonyl halide or fluorine-containing disulfonyl chloride with a metal halide or metal component in the present or absence of a solvent. In accordance with the present invention, a fluorine-containing bromide, fluorine-containing iodide or fluorine-containing chloride can be readily produced in high yield at low cost, using an industrially advantageous process.

Method for producing fluorine-containing halide

The present invention relates to a method for producing a water-soluble fluorine-containing vinyl ether which comprises subjecting a fluorine-containing 2-alkoxypropionic acid derivative represented by the following general formula (I): (wherein A represents &#x2014;OMor &#x2014;OM, and Mrepresents an alkali metal and Mrepresents an alkaline earth metal; X represents a halogen atom; Yand Yare the same or different and each represents a fluorine atom, a chlorine atom, a perfluoroalkyl group or a fluorochloroalkyl group; n represents an integer of 0 to 3, and n of Ys may be the same or different; m represents an integer of 1 to 5, and m of Ys are the same or different; and Z represents a hydrophilic group) to thermal decomposition at a temperature of not lower than 50&#xb0; C. but lower than 170&#xb0; C. in the presence of a coordinating organic solvent to give a water-soluble fluorine-containing vinyl ether represented by the general formula (II): (wherein Y, Y, Z, n and m are as defined above),

Process for the production of water-soluble fluorine-containing vinyl ethers

The present invention provides a process for producing a fluorinated fluorosulfonylalkyl vinyl ether represented by general formula (2):CF&#x2550;CFO(CFCF(CF)O)CFCFSOF&#x2003;&#x2003;(2)wherein n is an integer from 0 to 10, comprising fluorinating a perfluorovinylether sulfonate with SFand HF, the perfluorovinylether sulfonate being represented by general formula (1):CF&#x2550;CFO(CFCF(CF)O)CFCFSOM&#x2003;&#x2003;(1)wherein M is Ma or Mb, provided that Ma is an alkali metal and Mb is an alkaline earth metal; and n is as defined above. According to the process of the invention, the fluorinated fluorosulfonylalkyl vinyl ether can be produced in high yield in an industrially advantageous manner.

Process for producing fluorinated fluorosulfonylalkyl vinyl ether

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Settsu, Japan

Toshiya Mantani