Recent Advances in Asymmetric [3,3]-Sigmatropic Rearrangements

Synthesis 2003, No. 7, Print: 20 05 2003. Art Id.1437-210X,E;2003,0,07,0961,1008,ftx,en;E08002SS.pdf. © Georg Thieme Verlag Stuttgart · New York Abstract: The synthesis of new complex structures is still a challenge in preparative organic chemistry. Focusing on the generation of defined stereogenic centers, the [3,3]-sigmatropic rearrangements are known as reliable reactions. Always, a highly ordered transition state must be passed through, which allows the shift of chiral information from the reactant into the nascent product. Generally, the complete [1,3]and, frequently, the [1,4]-chirality transfer enables one to predict the configuration of the new centers.