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Chemistry. 2005 Dec 23;12(2):438-45.

Anhydrous phosphazenium fluorides as sources for extremely reactive fluoride ions in solution.

Author information

1
Chemisches Laboratorium, Institut für Organische Chemie und Biochemie der Universität, Freiburg, Albertstrasse 21, 79104 Freiburg, Germany. rschwesi@chemie.uni-freiburg.de

Abstract

Several peralkylated polyaminophosphazenium cations were evaluated for the generation of novel anhydrous F- salts. Two of them have been characterized by X-ray analysis and are particularly soluble, even in apolar aprotic solvents like benzene or THF, one of them even at -30 degrees C. Such solutions probably represent the most basic metal-free and stable media known to date. Comparison of these fluorides with known F- sources demonstrates that they are of unprecedented reactivity and selectivity in E2 elimination reactions.

PMID:
16196062
DOI:
10.1002/chem.200500838

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