Convenient Procedures for the Preparation of Lipophilic Quaternary Onium Fluorides, Hydrogendifluorides and Dihydrogentrifluorides via Ion Exchange in Two-Phase Systems
- 1 January 1988
- journal article
- research article
- Published by Georg Thieme Verlag KG in Synthesis
- Vol. 1988 (12) , 953-955
- https://doi.org/10.1055/s-1988-27763
Abstract
A series of lipophilic quaternary onium fluorides 2, hydrogendifluorides 3, and dihydrogentrifluorides 4 are easily synthesized in almost quantitative yields from the corresponding quaternary hydrogen sulfates by exchange with the appropriate anion in an organic aqueous two-phase system; alternatively quaternary salts 4 can be prepared from onium chlorides 5 or bromides 6 under the same conditions.Keywords
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