Abstract
PF3 is obtained in high purity by reacting PCl3 with Me3SnF. Alternative fluorinating reagents for this reaction are Ph3SnF and (i-C4H9)3SnF. The reaction with the isobutyl derivative is less complicated since the resulting chloride is a liquid in contrast to Ph3SnCl being a solid. PCl5, MeCOCl, SiCl4, Me3SiCl, and SOCl2 react with Me3SnF to give also the corresponding fluorides. The resulting chlorides are easily converted again to the fluorides. A quantitative recycling of the fluorinating reagent is therefore achieved.