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The combination of H3 + n[PMo12 - nVnO 40].aq (HPA-n, n = 3) and dioxygen proides a clean and regioselective reagent for the homolytic cleavage of various representative alpha-hydroxy ketones (primaryto tertiary) and turns out to be as efficient for the catalytic ring opening of chiral natural products.

Rearrangement reactions often lead to the regio- and stereoselective formation of carbon-carbon or carbon-heteroatom bonds, and allow the construction of otherwise hard-to-access molecular frameworks. Research disclosed in the present decade, especially in the last two years, has shown that organocatalytic modes of activation can be successfully applied to a variety of rearrangements. In this Minireview we discuss the advances achieved so far in asymmetric organocatalytic rearrangement reactions.

Applications -[110 refs.]. -(BREGEAULT, J.-M.; VENNAT, M.; SALLES, L.; PIQUEMAL, J.-Y.; MAHHA, Y.; BRIOT, E.; BAKALA, P. C.; ATLAMSANI, A.; THOUVENOT, R.; J. Mol. Catal. A: Chem. 250 (2006) 1-2, 177-189; Lab. Syst. Interfaciaux, CNRS, Univ. P. et M. Curie, F-75252 Paris, Fr.; Eng.) -Schramke 23-211

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