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Synfacts 2008(11): 1236-1236  
DOI: 10.1055/s-0028-1083404
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart ˙ New York

Polyisobutylene-Supported Pyridyl N-Oxide Catalyst for Allylation

Contributor(s): Yasuhiro Uozumi, Yoichi M. A. Yamada, Chung Keun Jin
D. E. Bergbreiter*, D. Ortiz-Acosta
Texas A&M University, College Station, USA
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Publikationsdatum:
23. Oktober 2008 (online)

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Significance

Preparation of a polyisobutylene (PIB)-supported pyridyl N-oxide catalyst from ­vinyl-terminated PIB (5 steps) and its catalytic application to allylation of aromatic aldehydes are described. The allylation of 1a-d with allyltrichloro­silane in the presence of PIB-supported catalyst afforded the corresponding homoallylic alcohols 2a-d (67-89%, 4 examples). The polymeric catalyst was readily recovered and reused without loss of activity.