Abstract
AbstractThe Pauson–Khand (2 + 2 + 1) cycloaddition (PKR) is one of the best ways to construct a cyclopentenone. In this review, standard procedures to perform both stoichiometric and catalytic Pauson–Khand reactions are presented. These include the use of homo- and heterogeneous catalysts as well as different promoters. Asymmetric versions are described, as are cascade processes where the Pauson–Khand reaction is combined with other transformations. The chapter ends with a summary of representative total syntheses of natural products where a Pauson–Khand reaction is used as the key step.
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