Synthesis of Triarylsulfonium Salts with Sterically Demanding Substituents and Their Alkaline Stability.

ABSTRACT: As cationic functional groups with excellent alkaline resistance that are potentially applicable to building blocks of robust anion exchange membrane (AEM) materials for water splitting and fuel cell modules, we describe the synthesis of triarylsulfonium (TAS) salts bearing sterically demanding substituents by the reaction of arynes with diaryl sulfides/sulfoxides and by the Friedel-Crafts reaction of diaryl sulfoxides. The TAS cations possessing three substituted benzene rings, such as tris(2,5-dimethylphenyl)sulfonium and bis(2,5-dimethylphenyl)mesitylsulfonium, were effectively produced through the appropriate choice of reactions and reagents. The alkaline stability of the TAS cations thus obtained was evaluated from their time-course ¹H NMR spectra in 1

SUBMITTER: Imai T 

PROVIDER: S-EPMC11894653 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature