A Pyridylsilyl Group Expands the Scope of Catalytic Intermolecular Pauson–Khand Reactions

Abstract

Now even unstrained alkenes can be used in catalytic intermolecular Pauson–Khand reactions [Eq. (a)]. This is made possible by the use of the directing group dimethyl(2-pyridyl)silyl, which can be easily removed at the end of the reaction. Furthermore, one observes completely regioselective incorporation of substituents at the 4- and 5-positions of the 2-cyclopentenone structure. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2002/z19338_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.