Processes for production of fluorine-containing compounds

Abstract

A process for the production of fluorine-containing compounds through liquid-phase fluorination by introducing both a starting compound and fluorine gas into a solvent to replace hydrogen of the starting compound by fluorine, more specifically, a process for the production of fluorine-containing compounds, characterized by (1) introducing a starting compound in a state dissolved in anhydrous hydrofluoric acid into a liquid-phase fluorination solvent to promote the fluorination of the starting compound or (2) introducing a starting compound in a state dissolved in a perfluoro-compound having plural polar groups in the molecule into a liquid-phase fluorination solvent to promote the fluorination thereof. These processes permit use of hydrocarbons themselves as the starting material and can give fluorine-containing compounds which are little contaminated with isomers in high yield.

Description

technical field

[0001] The invention relates to a method for preparing fluorine-containing compounds. In more detail, the present invention relates to a process for the preparation of perfluorinated compounds by fluorination of hydrocarbon compounds.

[0002] This application claims priority based on Japanese Patent Application No. 2007-307240 filed on November 28, 2007 and Japanese Patent Application No. 2007-307241 filed on November 28, 2007, the contents of which are incorporated herein by reference. Background technique

[0003] Fluorine-containing compounds, especially perfluorinated compounds in which all hydrogen atoms of hydrocarbon compounds are replaced by fluorine, have special properties such as chemical stability, hydrophobicity and oil repellency, and are expected to be used in medicine, pesticides, polymers, functional products, surfactants, washing Compounds for various uses such as agents, other various chemical transformation products or their synthetic in...