Described herein are three methods for making halogenated fluorinated ether-containing compounds using a fluorinated olefin or hexafluoropropylene oxide.

An object of the present invention is to provide a novel method for producing a ketone derivative, and more specifically, a method for producing a ketone derivative (I) represented by formula (I), including mixing a thioester derivative (II) represented by formula (II), a Grignard reagent (III) represented by formula (III) and a copper salt to form a ketone derivative (I).

Described herein are three methods for making halogenated fluorinated ether-containing compounds using a fluorinated olefin or hexafluoropropylene oxide.