METHODS FOR PREPARATION OF FLUORINATED SULFUR-CONTAINING COMPOUNDS

摘要

Methods for preparing fluorinated sulfides and fluorinated sulfones are described. To prepare a fluorinated sulfides, a sulfur-containing reactant represented by the formula: R1SM or M2S, wherein R1 is a C1 to C10 alkyl or fluoroalkyl, S is sulfur, and M is a cation, is reacted with a fluorinated alkyl compound. A fluorinated sulfone is formed by oxidizing the fluorinated sulfide. The fluorinated sulfones prepared by the methods disclosed herein are particularly useful as electrolyte solvents for electrochemical cells, such as a lithium ion battery, where a high purity solvent is desired.