A large variety of usefully functionalized α,β-unsaturated phosphine oxides (including bifunctional and homochiral ones), functionalized tetraaryl phosphonium salts and the C-P heterocyclic systems can be obtained directly by means of the Pd - catalyzed arylation of vinyl phosphine oxides, arylation of tertiary phosphines and aryl exchange processes in quaternary phosphonium salts.
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Pietrusiewicz et al. (1993) studied this question.
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