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A new family of delocalized lipophilic cations |
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| Authors: | Marielouise HenrichAlbrecht Marhold Alexander A Kolomeitsev Natalya KalinovichGerd-Volker Röschenthaler |
| Institution: | a BCH-FCH-RD Fluorchemie, D-51368 Bayer AG, Leverkusen, Germany b Institute of Organic Chemistry, Ukrainian National Academy of Sciences, Murmanskaya 6, 02094 Kiev, Ukraine c Institut für Anorganische & Physikalische Chemie, Universität Bremen, Leobener Strasse, D-28334 Bremen, Germany |
| Abstract: | A new family of delocalized lipophilic cations containing one to three carbimino, sulfimino and phosphinimino units with Cl−, Br−, HF2− and Me3SiF2− as counterions has been designed. The compounds synthesized demonstrate high performance and thermal stability in the ‘Halex’ fluorination reactions. For the first time sulfur tetrachloride pregenerated at −78°C was successfully applied in reactions with N-nucleophiles to afford straightforwardly sulfonium chlorides with three S-N bonds. |
| Keywords: | delocalized lipophilic cations halogen exchange fluorination aminosulfonium salts |
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