We have developed a heterogeneous phosphine functionalized polystyrene based on the rasta resin architecture, rasta resin-triphenylphosphine, and used this as a reagent in a variety of one-pot Wittig reactions.  Furthermore, it has been converted into the corresponding phosphine oxide and a phosphonium salt by reaction with hydrogen peroxide and benzyl chloride, respectively.  The former was used as a reagent precursor in alcohol halogenation and aziridine ring-opening reactions, while the later was used as a catalyst in carbonyl group cyanosilylation reactions.    Both of these materials were readily recyclable.  Finally, bifunctional versions of rasta resin-triphenylphosphine that incorporate tertiary amine groups in addition to the phosphine groups have been prepared, and used in one-pot Wittig reactions and related cascade processes.  Recent results regarding this research will be presented.

Rasta resin-triphenylphoshpine based reagents and catalysts

243rd National Meeting (2012)

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