The nucleophilic reactivity of organophosphorus compounds. Part 4. The alkylation of phosphorus acid anions with 'onium keten acetals
Abstract
The preparations of phosphonium and pyridinium keten acetals are reported and their reactions with a variety of phosphorus acid anions are described. The novel pyridinium keten acetals are useful reagents for the alkylation of various acid anions in aprotic, aqueous and aqueous-emulsion media.