Synthesis of FSO2CF2CF2OCF2I from difluoro(fluorosulfonyl)acetyl fluoride and its relevant salt FSO2CF2CF2O−K+ in the presence of I2 or CF2I2

The synthesis of FSO2CF2CF2OCF2I via two routes was studied: the direct reaction between ICF2I and FSO2CF2CF2O−K+ and the reaction between FSO2CF2CF2O−K+ and difluorocarbene generated from difluoro(fluorosulfonyl)acetyl fluoride in the presence of iodine.

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► The reaction of diiododifluoromethane with fluorinated alkoxide.
► The reaction of difluorocarbene with fluorinated alkoxide.
► The synthesis of fluorinated telomers.