PROCESSES FOR PRODUCING FLUORINATED CYCLIC ETHERS AND USE THEREOF

摘要

Processes for producing a useful, fluorinated, unsaturated, cyclic ether and a useful fluorinated, saturated, cyclic ether from inexpensive materials; an effective use of the fluorinated, unsaturated, cyclic ether and the fluorinated, saturated, cyclic ether; and a novel compound which is useful as an intermediate for these ethers. A compound (5) shown below is thermally decomposed to obtain at least one fluorinated, unsaturated, cyclic ether selected between the compound (6a) and compound (6b) shown below. Reducing the fluorinated, unsaturated, cyclic ether gives at least one fluorinated, saturated, cyclic ether selected between the compound (7a) and compound (7b) shown below. In the formula (5), A<F> represents perfluorotetrahydrofuranyl and X represents fluorine or -O<->M<+> (wherein M<+> represents a counter ion).