- Hydrofluoroether synthetic method
-
The invention discloses a hydrofluoroether synthetic method which comprises the following steps of throwing vinyl ether, a solvent and a composite fluoride agent in a reactor, rising the temperature to a temperature required for reaction to perform reaction, and separating a reaction liquid to obtain a hydrofluoroether product, wherein the molar ratio of the vinyl ether, the solvent and the composite fluoride agent is 1 to (1-3) to (1-2), the reaction temperature is 50-150 DEG C, and the reaction time is 2-5h. According to the hydrofluoroether synthetic method provided by the invention, the composite fluoride agent is used to perform synthesis of the hydrofluoroether, fluorination addition can be efficiently performed at lower temperature, the yield is larger than 90 percent, and the deficiencies of the traditional synthetic technology are effectively solved.
- -
-
Paragraph 0033; 0034
(2018/06/26)
-
- METHOD FOR PRODUCING FLUORINE-CONTAINING ETHER WITH HIGH PURITY
-
The present invention provides a method for efficiently producing a highly pure fluoroether containing remarkably low concentration of a fluorine-containing alkyl alcohol. The method is suited for scale-up and specifically includes performing countercurrent separation of a crude solution of fluoroether including a fluorine-containing alkyl alcohol as an impurity using water.
- -
-
Page/Page column 6
(2012/04/11)
-
- METHOD FOR PRODUCING FLUORINE-CONTAINING ETHER
-
There is provided a method of preparing a high purity fluorine-containing ether which inhibits a side reaction generating an unsaturated bond and assures low cost and simple steps. When preparing the fluorine-containing ether by allowing a fluorine-containing alkyl alcohol to react with a fluorinated olefin in the presence of a basic compound, a reaction is terminated at a stage before a conversion ratio of the fluorine-containing alkyl alcohol reaches 75 %.
- -
-
Page/Page column 13-14
(2011/04/25)
-
- Ether compound as an inhalation anesthetic
-
Aliphatic ether compounds of the formula EQU1 wherein Z is CH3 or Cl, and n is zero when Z is CH3 and is one when Z is Cl, are useful as inhalation anesthetics.
- -
-
-