Liquid/solid phase transfer activation of Grubbs-type alkene metathesis catalysts; Application of silver salts of sulfonated polystyrene

Zhenxing Xi, Hassan S. Bazzi, John A. Gladysz

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Alkene metatheses catalyzed by (H2IMes)(Cy2PCH2CH2N(CH3)3 +)(Cl)2Ru(CHPh) Cl-, an analog of Grubbs' second generation catalyst with an ammonium-salt containing phosphine, are dramatically accelerated when conducted in the presence of the insoluble resin PS-SO3Ag (PS = polystyrene). A mechanism involving ionic and covalent phosphine binding (PS-SO3Ag·PCy2CH2CH2N(CH3)3 + PS-SO3 -) with concomitant formation of AgCl is proposed. Grubbs' second generation catalyst exhibits a modest rate enhancement, believed to reflect the generation of PS-SO3Ag·PCy3.

Original languageEnglish
Pages (from-to)4178-4182
Number of pages5
JournalCatalysis Science and Technology
Volume4
Issue number12
DOIs
Publication statusPublished - 1 Dec 2014

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ASJC Scopus subject areas

  • Catalysis

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