PROCESSES FOR THE PREPARATION OF FLUORINATED ACYL FLUORIDES AND FLUORINATED VINYL ETHERS

摘要

The present invention provides novel processes for preparing a fluorinated acyl fluoride and a fluorinated vinyl ether. Namely, it provides a process for preparing a fluorinated acyl fluoride (3), which comprises reacting a compound (1) having a fluorine content of 30 mass% or above with fluorine in a liquid phase to form a compound (2) and then dissociating the ester bond in the compound (2), and a process for preparing a fluorinated vinyl ether (10), which comprises pyrolyzing the fluorinated acyl fluoride: (see formula 1) (see formula 2) (see formula 3) (see formula 10) wherein R A and R B are alkyl groups or the like, or the combination R A and R B is an ethereal oxygen-containing alkylene group or the like, R C and R D are perfluoro(ethereal oxygen-containing alkyl) groups or the like, or the combination of R C and R D is a perfluoro(ethereal oxygen-containing alkylene) group or the like, X1, X2, X3, X4, X5 and X6 are hydrogen atoms, fluorine atoms or the like, R AF, R BF, R CF and R DF are groups derived respectively from R A, R B, R C and R D by replacing substantially all of the hydrogen atoms by fluorine atoms.