Immobilisation of the Grubbs III Olefin Metathesis Catalyst with Polyvinyl Pyridine (PVP)

Klaas Mennecke; Karol Grela; Ulrich Kunz; Andreas Kirschning

doi:10.1055/s-2005-918958

LETTER

Immobilisation of the Grubbs III Olefin Metathesis Catalyst with Polyvinyl Pyridine (PVP)

Klaas Mennecke^a, Karol Grela^b, Ulrich Kunz^c, Andreas Kirschning*^a
^a Institut für Organische Chemie, Universität Hannover, Schneiderberg 1b, 30167 Hannover, Germany
e-Mail: andreas.kirschning@oci.uni-hannover.de;
^b Institute of Organic Chemistry, Polish Academy of Science, Kasprzaka 44/52, 01-224 Warsaw, Poland
^c Institut für Chemische Verfahrenstechnik, Technische Universität Clausthal, Leibnizstr. 17, 38678 Clausthal-Zellerfeld, Germany

Abstract

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Abstract

A new concept for immobilising Grubbs III catalyst by direct coordination of ruthenium to polyvinyl pyridine (PVP) is presented. PVP was prepared by precipitation polymerisation, which led to small bead sizes (0.2-2 µm) and large surface areas. Compared to commercial resins, this phase showed superior properties when employed in model ring-closing metathesis (RCM) and in representative RCM, enyne and CM reactions with various substrates. The concept of immobilisation was also applied to Raschig rings made from a glass polymer composite material, which can be incorporated into devices for continuous flow processes.

Key words

catalysis - immobilisation - olefin metathesis - microwave assistance - Ru-catalyst - polymer support

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Referenzen

References

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