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Synlett 2011(4): 551-554
DOI: 10.1055/s-0030-1259515
DOI: 10.1055/s-0030-1259515
LETTER
© Georg Thieme Verlag
Stuttgart ˙ New York
Rasta Resin-PPh3BnCl and its Use in Chromatography-Free Carbonyl Cyanosilylation Reactions
Further Information
Publication History
Received
29 October 2010
Publication Date:
27 January 2011 (online)


Abstract
Rasta resin-PPh3BnCl, a new heterogeneous polystyrene-based phosphonium salt, has been synthesized and used to catalyze cyanosilylation reactions of aldehydes and ketones. It was found to be more efficient as a catalyst than a similar heterogeneous phosphonium salt anchored onto a polystyrene-based on the Merrifield resin architecture of 2% divinylbenzene cross-linking. In these reactions rasta resin-PPh3BnCl was separated from the desired reaction product simply by filtration, and it could be reused without significant loss of catalytic activity numerous times.
Key words
polymer-supported catalyst - polystyrene - phosphonium salt - organocatalysis - cyanosilylation
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