Wittig reagents polymer-bound, supports

Polymer-supported Wittig reagents have recently been developed as an extension to the traditional reagents.29 For example, polystyryldiphenylphosphine has been developed in an attempt to replace the use of triphenylphosphine in the preparation of phosphoranes (see Protocol 1). The hope is that these polymer-bound regents will overcome the practical problem of removing the triphenylphosphine oxide by-product formed in Wittig reactions. Polymer supported phosphonates and Wittig substrates have also been prepared for use in solid phase synthesis and combinatorial chemistry.30... 

This chapter is a comprehensive review of alkene syntheses with polymer-supported Wittig reagents to produce soluble and polymer-bound alkenes. It does not include polymerizations of difunctional phosphoranes with difunctional carbonyl compounds, polymer-bound ylides of elements other than phosphorus, or other synthetic and catalytic uses of polymer-bound phosphines. 

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