Synthesis p. 953 - 955 (1988)
Update date:2022-08-22
Topics:
Landini, Dario
Molinari, Henriette
Penso, Michele
Rampoldi, Alessandro
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.
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