Recyclable dirhodium catalysts embedded in nanoporous surface-functionalized organosilica hosts for carbenoid-mediated cyclopropanation reactions

Evgeny V. Dikarev, D. Krishna Kumar, Alexander S. Filatov, Abhishek Anan, Youwei Xie, Tewodros Asefa, Marina A. Petrukhina

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Recyclable and efficient heterogeneous catalysts have been prepared by embedding dirhodium(II,II) core carboxylate complexes into the amine-functionalized nanosized channels of a mesoporous silica host, amine-SBA-15. Two alternative synthetic procedures for the preparation of the catalysts have been developed and adapted for the immobilization of dirhodium complexes of variable Lewis acidity. The catalytic activity of the resulting solid materials has been evaluated in model cyclopropanation reactions of styrene at variable reaction conditions (reaction substrate, temperature, time, and solvent). Importantly, the designed catalysts, which can be readily recovered and reused, display the reactivity and selectivity profiles exceeding or comparable to their homogeneous dirhodium(II) counterparts.

Original languageEnglish
Pages (from-to)1461-1466
Number of pages6
JournalChemCatChem
Volume2
Issue number11
DOIs
Publication statusPublished - Nov 15 2010

Keywords

  • Cyclopropanation
  • Heterogeneous catalysis
  • Mesoporous materials
  • Rhodium
  • Supported catalysts

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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