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

Abstract The synthesis of FSO 2 CF 2 CF 2 OCF 2 I via two routes was studied: the direct reaction between ICF 2 I and FSO 2 CF 2 CF 2 O − K + and the reaction between FSO 2 CF 2 CF 2 O − K + and difluorocarbene generated from difluoro(fluorosulfonyl)acetyl fluoride in the presence of iodine.