Tris(perfluoroalkyl)silyl Entities as Unexpectedly Potent Tags for the Noncovalent Immobilization of Catalysts by Fluorous–Fluorous Interactions: Application to the Synthesis of Several Perfluoro-Tagged Ligands
✍ Scribed by Vasyl Andrushko; Dominik Schwinn; Carl Christoph Tzschucke; Florian Michalek; Joachim Horn; Christian Mössner; Willi Bannwarth
- Book ID
- 102260173
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- German
- Weight
- 305 KB
- Volume
- 88
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Unexpectedly high retention times were obtained in HPLC investigations for compounds equipped with (C~8~F~17~CH~2~CH~2~)~3~Si tags on C~8~F~17~‐modified silica gel (Fig. 4). Hence, these tags have a high potential for the noncovalent immobilization of catalysts to be applied in organic solvents, allowing for an easy separation and re‐use of the catalyst by filtration and reapplication. The tris(perfluoroalkyl)silyl tag could be incorporated in a straightforward manner into ligands as demonstrated by the synthesis of several prominent classes of ligands (Schemes 4–6).